FINM7006-Applied Foundations of Finance Study Notes & Practice | The Australian National University | AskSia
Mar 13, 2026
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Applied Foundation of Finance: Comprehensive Summary
This document provides a foundational overview of financial concepts, instruments, markets, valuation techniques, and risk management strategies.
1. Debt Instruments and Valuation
- Price of Debt: The price of any debt instrument is the present value of all its associated cash flows.
- Purpose: Governments and corporations issue debt instruments to raise funds for operations.
- Key Components:
- Term: Includes interest payments and the repayment of the principal debt.
- Face Value: All bond prices are quoted as if the face value is $100.
- Coupon-Paying Bonds:
- Pay periodic interest (coupon payment, C) to the lender for a defined number of periods (n), usually semi-annually.
- Repay the principal (face value, F) at maturity.
- Formula for Price:
$P_0 = \frac{C}{(1+r_d)^1} + \frac{C}{(1+r_d)^2} + ... + \frac{C}{(1+r_d)^n} + \frac{F}{(1+r_d)^n}$
Where:
- $P_0$ = Current price of the bond
- $C$ = Coupon payment per period ($C = \text{coupon rate} \times \text{face value}$)
- $r_d$ = Required rate of return / yield to maturity
- $n$ = Number of periods
- $F$ = Face value
- Bond Pricing Relationships:
- If $r_d < C$ (yield is less than coupon rate), then Bond Price ($B$) > Face Value ($F$) - Premium Bond.
- If $r_d > C$ (yield is greater than coupon rate), then Bond Price ($B$) < Face Value ($F$) - Discount Bond.
- Zero-Coupon Bonds:
- Do not pay periodic interest.
- Only the face value (F) is repaid at the end of n periods.
- Issued at a price less than their face value.
2. Types of Debt Securities
- Government Debt Securities (Treasury Department):
- Obligations of the Commonwealth Government, carrying no default risk.
- Treasury Notes: Zero-coupon bonds with maturity ≤ 6 months.
- Treasury Bonds: Coupon-paying bonds with maturity ≤ 10 months.
- Bank Accepted Bills (BABs):
- Zero-coupon bonds with maturity of 90-180 days.
- Guaranteed by an accepting bank.
- Mortgage Bonds: Secured by property; default leads to the sale of the property to repay bondholders.
- Debentures: Secured by tangible assets; typically coupon-paying bonds.
- Convertible Bonds: Can be exchanged for shares in the issuing corporation.
3. Financial Instruments and Markets
- Financial System: A mechanism facilitating the trading of financial instruments, bringing together lenders and borrowers, and transferring risks.
- Financial Institutions (Intermediaries): Commercial banks, credit unions, insurance companies, superannuation funds, etc.
- Financial Instruments: Equity (shares), Debt (bonds, bills), Derivatives, Foreign Currencies.
- Money Market (Short-Term, ≤ 1 year):
- Used for short-term liquidity needs.
- Discount Securities: Treasury notes, bank bills, commercial paper, negotiable certificates of deposit (CDs).
- Capital Market (Medium-to-Long Term, > 1 year):
- Corporate Debt: Term loans, debentures, unsecured notes.
- Government Debt: Treasury bonds.
- Equity: Ordinary shares, preference shares.
- Market Types:
- Primary Market: For newly issued instruments to raise funds.
- Secondary Market: For trading existing instruments, does not raise additional funds for the issuer.
- Derivatives Market: To "lock in" prices of assets in advance.
- Foreign Exchange Market: For currency conversion.
4. Equity Instruments
- Preference Shares:
- Issued by corporations.
- Riskier than corporate bonds but less risky than ordinary shares.
- May have fixed dividends and priority over ordinary shares in liquidation.
- Can be floating rate or convertible.
- Ordinary Shares:
- Issued by corporations.
- Risky; dividends are paid only when declared.
- Represent ownership and carry voting rights.
- Rank last in liquidation.
5. Investment Decision Making: Cash Flows and Valuation
- Incremental Cash Flows: Only cash flows that change as a result of undertaking a project should be considered.
- $\Delta X_t = X_t(\text{with project}) - X_t(\text{without project})$
- Net Cash Flow ($X_t$): Revenue ($R_t$) - Expenses ($E_t$) - Tax ($T_t$) - Investment ($I_t$).
- Depreciation Tax Shield: Depreciation reduces taxable income, thus lowering tax paid ($T = \tau(R_t - E_t - D_t)$). The tax shield is $\tau D_t$.
- Asset Sales:
- Asset Sale Price > Salvage Value > Taxable Gain.
- Asset Sale Price < Salvage Value > Allowable Deduction (Tax Credit).
- Net Present Value (NPV):
- The sum of the present values of all cash flows, minus the initial investment.
- Decision Rule:
- NPV > 0: Accept
- NPV < 0: Reject
- NPV = 0: Indifferent
- Formula: $NPV = \sum_{t=1}^{n} \frac{X_t}{(1+r_p)^t} - I_0$
- Mutually Exclusive Projects:
- Same life: Compare NPVs.
- Different lives: Compare annual equivalent cash flows.
6. Capital Budgeting Techniques
- Net Present Value (NPV): Best single indicator of a project's contribution to firm value.
- Profitability Index (PI): Present value of future cash flows / Initial investment. Accept if PI > 1. Useful for ranking projects when capital is rationed.
- Internal Rate of Return (IRR): The discount rate that makes NPV = 0. Accept if IRR > required rate of return. Can sometimes yield multiple or conflicting results.
- Modified Internal Rate of Return (MIRR): Similar to IRR but assumes reinvestment at the required rate of return. Always produces a single estimate.
- Payback Period: Time to recover the initial investment. Ignores time value of money and cash flows beyond the payback period.
- Discounted Payback Period: Time to recover the initial investment using discounted cash flows. Accounts for time value of money but still ignores cash flows beyond the payback period.
7. Risk and Return
- Probability Distribution: Describes the possible outcomes of a random variable and their associated probabilities.
- Mean: Expected value.
- Variance: Measure of spread around the mean (risk).
- Skewness: Lack of symmetry.
- Kurtosis: Tallness/flatness of the distribution.
- Expected Rate of Return ($E(r)$): Sum of (probability of outcome $\times$ return for that outcome).
- $E(r) = \sum_{i=1}^{n} P(r_i) \times r_i$
- Risk: Measured by standard deviation ($\sigma$).
- Investor Attitudes:
- Risk Averse: Require higher returns for taking on more risk (demand a risk premium).
- Diversification: Reducing risk by spreading investments across a portfolio of assets.
- Covariance ($\sigma_{XY}$): Measure of association between two variables.
- Correlation Coefficient ($\rho_{XY}$): Standardized measure of association between variables (-1 to +1).
- Combining assets that are not perfectly positively correlated reduces portfolio variance ($\sigma^2$) and standard deviation ($\sigma$).
- Portfolio Expected Return: $E(R_p) = w_1 E(R_1) + w_2 E(R_2)$
- Portfolio Variance: $\sigma_p^2 = w_1^2 \sigma_1^2 + w_2^2 \sigma_2^2 + 2w_1 w_2 \rho_{1,2} \sigma_1 \sigma_2$
- Types of Risk:
- Unsystematic Risk (Diversifiable): Company-specific events. Can be reduced through diversification.
- Systematic Risk (Non-Diversifiable): General market influences. Cannot be eliminated through diversification.
- Realized Return: Actual gain or loss on an investment.
- Realized Return = (Ending Price + Cash Distributions - Beginning Price) / Beginning Price.
- Average Rates of Return:
- Arithmetic Average: Simple average of yearly returns.
- Geometric Average: Compounded average annual return.
8. Capital Asset Pricing Model (CAPM)
- Concept: Investors require compensation for time (risk-free rate) and risk (risk premium).
- Formula: $E(r_i) = r_f + \beta_i [E(r_m) - r_f]$
- $E(r_i)$: Expected return on asset $i$.
- $r_f$: Risk-free rate.
- $\beta_i$: Beta of asset $i$, measuring its sensitivity to market risk.
- $E(r_m)$: Expected return on the market portfolio.
- $[E(r_m) - r_f]$: Market risk premium.
- Beta ($\beta$):
- $\beta < 1$: Less volatile than the market.
- $\beta > 1$: More volatile than the market.
- $\beta = 1$: Moves with the market.
- Portfolio Beta ($\beta_p$): Weighted average of individual asset betas.
9. Weighted Average Cost of Capital (WACC)
- Definition: The average required rate of return of all securities used to finance the firm.
- Formula: $WACC = \left( \frac{D}{D+E+P} \right) (1-T)r_d + \left( \frac{P}{D+E+P} \right)r_{ps} + \left( \frac{E}{D+E+P} \right)r_e$
- $T$: Corporate tax rate.
- $r_d$: Required rate of return on debt (after-tax cost).
- $D$: Market value of debt.
- $r_{ps}$: Required rate of return on preference shares.
- $P$: Market value of preference shares.
- $r_e$: Required rate of return on ordinary shares.
- $E$: Market value of ordinary equity.
- Uses:
- Discount rate for investment projects.
- Evaluating the firm's overall performance.
- Cost of Capital Components:
- Cost of Debt: Yield to maturity on comparable bonds, adjusted for tax deductibility of interest.
- Cost of Preference Shares: Dividend / Price of preference share.
- Cost of Ordinary Shares: Using the Dividend Discount Model (DDM) or CAPM.
- Adjusting WACC for Project Risk:
- Company-wide WACC: Used when project risk is similar to the firm's average risk. Simple but ignores project-specific risk.
- Divisional WACC: Used for divisions with different risk profiles. More accurate but harder to estimate.
- Pure-Play Method: Uses the WACC of a comparable single-division company to estimate a division's WACC.
10. Derivatives: Forwards, Futures, and Options
- Derivatives: Financial contracts whose value is derived from an underlying asset.
- Forward Contracts:
- Traded Over-the-Counter (OTC).
- Customized terms.
- No money changes hands until delivery.
- Parties bear credit risk of each other.
- Illiquid.
- Futures Contracts:
- Traded on organized exchanges.
- Standardized terms (asset type, amount, expiry date).
- Marking to Market: Daily settlement of gains and losses through margin accounts, reducing default risk.
- Clearing House Guarantee: Reduces counterparty credit risk.
- Liquid.
- Options:
- Give the buyer (holder) the right, but not the obligation, to buy or sell an asset at a specified price (exercise price) by a certain date.
- Call Option: Right to buy.
- Put Option: Right to sell.
- Holder (Long Position): Pays a premium, has the right.
- Writer (Short Position): Receives a premium, has the obligation.
- American Option: Can be exercised anytime before or on expiry.
- European Option: Can only be exercised on expiry.
- Payoffs:
- Long Call: Max($S_T - X, 0$)
- Short Call: Min($0, X - S_T$)
- Long Put: Max($X - S_T, 0$)
- Short Put: Min($0, S_T - X$)
- Profit: Payoff - Premium Paid (for holder) or Payoff + Premium Received (for writer).
- Put-Call Parity: A pricing relationship between European put and call options with the same exercise price and maturity. Violation leads to arbitrage opportunities.
- $C - P = S_0 - X e^{-r_f T}$ (simplified form without dividends/costs)
11. Risk Management and Hedging
- Purpose: To minimize exposure to financial risks (e.g., foreign exchange, interest rate fluctuations) and protect profits.
- Hedging Strategies:
- Forwards/Futures: Lock in a specific price, eliminating both downside risk and upside potential.
- Long Position: Locks in a selling price (e.g., selling an asset).
- Short Position: Locks in a buying price (e.g., buying an asset).
- Options: Provide downside protection while retaining upside potential, at the cost of an option premium.
- Long Call: Protects against rising prices (e.g., buying an asset).
- Long Put: Protects against falling prices (e.g., selling an asset).
- Forwards/Futures: Lock in a specific price, eliminating both downside risk and upside potential.
- Applications:
- Portfolio Management: Using futures or options to hedge against market downturns or lock in returns.
- Foreign Exchange Risk: Using forwards or options to lock in exchange rates for international transactions.
- Interest Rate Risk: Using interest rate futures or options to manage borrowing costs or investment yields.
12. Business Organizations
- Sole Trader: Single owner, unlimited liability, owner manages.
- Partnership: Two or more owners, generally unlimited liability for general partners, can be managed by partners.
- Corporation (Public Company):
- Unlimited owners, dispersed ownership.
- Limited liability for shareholders.
- Separation of ownership and management (Board of Directors).
- Profits taxed at the corporate level, with imputation credits for shareholders.
Foundations of Finance: Time Value of Money and Financial Mathematics
This document introduces fundamental concepts of financial mathematics, focusing on the time value of money and its application in calculating the present and future values of cash flows, annuities, and perpetuities.
1. The Time Value of Money
- Core Concept: A dollar received today is worth more than a dollar received in the future.
- Reasoning: Money received today can be invested to earn interest, thus growing its value over time.
- Preference: Given a choice, individuals prefer to receive money sooner rather than later.
2. Future Value (FV) and Present Value (PV) of Single Cash Flows
2.1 Future Value of a Single Cash Flow
- Definition: The value of a current sum of money at a specified future date, based on a given interest rate.
- Formula:
FV = F0 * (1 + r)^nFV: Future ValueF0: Initial amount (present value)r: Interest rate per periodn: Number of periods
- Compounding: Interest earned in one period is added to the principal, and future interest is calculated on this new, larger principal.
2.2 Present Value of a Single Cash Flow
- Definition: The current worth of a future sum of money, discounted back to the present at a specific interest rate.
- Formula:
PV = FV / (1 + r)^nPV: Present ValueFV: Future Valuer: Discount rate per periodn: Number of periods
- Application: Determines how much needs to be invested today to reach a specific future amount.
3. Multiple Cash Flows
3.1 Future Value of Multiple Cash Flows
- Method: To find the total future value of multiple cash flows, each individual cash flow is compounded to the future date and then summed.
- Example: If you expect to receive $100 in 1 year, $200 in 2 years, and $500 in 3 years, with a 10% p.a. interest rate, the total future value in 3 years is calculated by compounding each amount individually:
FV = $100*(1.1)^2 + $200*(1.1)^1 + $500 = $121 + $220 + $500 = $841
3.2 Present Value of Multiple Cash Flows
- Method: To find the total present value of multiple cash flows, each individual cash flow is discounted back to the present and then summed.
- Example: If you expect to receive $100 in 1 year, $200 in 2 years, and $500 in 3 years, with a 10% p.a. interest rate, the present value is calculated by discounting each amount individually.
- Note: A shortcut exists if all cash flows are of identical value (annuities).
4. Annuities
- Definition: A finite number of cash flows that are equal in amount and evenly spaced over time.
- Types:
- Ordinary Annuity: The first cash flow occurs one period after the present. The time between cash flows is consistent.
- Example: Loan repayments.
- Annuity Due: The first cash flow occurs immediately (at the present). Subsequent cash flows follow at regular intervals.
- Example: Rent paid on a residential property.
- Deferred Annuity: The first cash flow occurs at some point in the future, and the time between now and the first cash flow is not the same as the time separating subsequent cash flows.
- Example: "Buy now, pay later" schemes.
- Ordinary Annuity: The first cash flow occurs one period after the present. The time between cash flows is consistent.
4.1 Future Value of Annuities
- Calculation: Can be done by compounding each individual cash flow or by using a specific formula.
- Formula (Ordinary Annuity): Provided in the text, calculates the future value immediately after the last cash flow.
- Example (Ordinary Annuity): Calculate the FV in 3 periods of an ordinary annuity with 3 payments of $500 at an 8% interest rate.
- Individual Compounding:
FV = $500*(1.08)^2 + $500*(1.08)^1 + $500 = $1,623.20 - Formula: Provided in the text.
- Individual Compounding:
- Formula (Annuity Due): Provided in the text.
4.2 Present Value of Annuities
- Calculation: Uses specific formulas that differ based on the type of annuity.
- Formula (Ordinary Annuity):
PV = F * [1 - (1 + r)^-n] / r- Example: PV of an ordinary annuity with 10 annual cash flows of $500 at 10% p.a.
PV = $500 * [1 - (1.10)^-10] / 0.10 = $3,072.27
- Example: PV of an ordinary annuity with 10 annual cash flows of $500 at 10% p.a.
- Formula (Annuity Due):
PV = F * [1 - (1 + r)^-(n-1)] / r * (1 + r)- Note: The PV of an annuity due is higher than an ordinary annuity because payments are received earlier.
- Formula (Deferred Annuity): Involves calculating the PV of the annuity at its start date and then discounting that value back to the present.
- Example: PV of a deferred annuity commencing in 5 years with 10 annual cash flows of $500 at 10% p.a.
5. Perpetuities
- Definition: A series of equally spaced cash flows of the same dollar value that continues on forever.
- Types:
- Ordinary Perpetuity: The first cash flow occurs one period from now, and cash flows continue indefinitely.
- Formula:
PV = F / r - Example: PV of an ordinary perpetuity with annual cash flows of $500 at 10% p.a.
PV = $500 / 0.10 = $5,000
- Formula:
- Perpetuity Due: The first cash flow occurs immediately, and cash flows continue indefinitely.
- Formula:
PV = (F / r) * (1 + r) - Example: PV of a perpetuity due with annual cash flows of $500 at 10% p.a.
PV = ($500 / 0.10) * (1.10) = $5,500
- Formula:
- Deferred Perpetuity: The first cash flow occurs at some point in the future, and cash flows continue indefinitely thereafter.
- Formula: Calculate the PV of the perpetuity at its start date and then discount that value back to the present.
- Example: PV of a deferred perpetuity commencing in 4 years with annual cash flows of $500 at 10% p.a.
PV = [$500 / 0.10] * (1.10)^-4 = $4,000 * 0.6830 = $2,732.07(Note: The example calculation in the source material seems to have a slight discrepancy, using(1.10)^-3instead of(1.10)^-4for the deferral period, resulting in $3,756.57. The formula implies discounting the perpetuity value back by the deferral period.)
- Ordinary Perpetuity: The first cash flow occurs one period from now, and cash flows continue indefinitely.
6. Interest Rates for Time Value of Money Calculations
- Consistency is Key: All components of a calculation (interest rate
rand number of periodsn) must be expressed in terms of the same time frame. - Timelines: Useful for visualizing cash flows and determining the appropriate time frame.
6.1 Types of Interest Rates
- Annual Effective Interest Rate: The rate quoted matches the compounding period (e.g., 10% p.a. compounded annually).
- Annual Nominal Interest Rate: The rate quoted is for a period longer than the compounding frequency (e.g., 12% p.a. compounded monthly).
- Periodic Interest Rate: The actual rate applied per compounding period (e.g., 12% p.a. / 12 months = 1% per month).
6.2 Choosing the Correct Rate and Period
- Annual Effective Rate: Use when cash flows are annual and you want
nin years. - Periodic Interest Rate: Use when cash flows occur more frequently than annually. The periodic rate and
nmust match the cash flow frequency (e.g., monthly rate andnin months for monthly cash flows). - Rule: Never use an annual nominal rate directly in calculations.
6.3 Interest Rate Conversions (Interest Rate Wheel)
- Purpose: To convert between different interest rate types (annual effective, nominal, periodic).
- Conversions:
- Nominal to Effective:
re = (1 + rn/n)^n - 1 - Effective to Periodic:
rp = (1 + re)^(1/m) - 1(wheremis the number of periods per year) - Nominal to Periodic: Convert nominal to effective, then effective to periodic.
- Nominal to Effective:
- Example: Calculate the 6-month interest rate given 10% p.a. effective.
rp = (1.10)^(1/2) - 1 = 0.0488 = 4.88% - Example: Calculate the monthly periodic rate from 9% p.a. compounded semi-annually.
- Convert 9% p.a. nominal (compounded semi-annually) to annual effective:
re = (1 + 0.09/2)^2 - 1 = 0.092025 - Convert annual effective to monthly periodic:
rp = (1 + 0.092025)^(1/12) - 1 = 0.007363 = 0.74%
- Convert 9% p.a. nominal (compounded semi-annually) to annual effective:
6.4 Application Example (Loan Borrowing)
- Scenario: Calculate the amount borrowed (PV) for a loan with fortnightly repayments of $1,500 over 25 years, at 12% p.a. compounded annually.
- Steps:
- Determine
n: 25 years * 26 fortnights/year = 650 periods. - Determine
r(fortnightly periodic rate): Convert 12% p.a. compounded annually to a fortnightly rate.- Annual effective rate
re = 0.12 - Fortnightly rate
r = (1 + 0.12)^(1/26) - 1 = 0.004368309
- Annual effective rate
- Use the PV of an ordinary annuity formula with
F = $1,500,n = 650, andr = 0.004368309.PV = $1,500 * [1 - (1 + 0.004368309)^-650] / 0.004368309 ≈ $204,067.50
- Determine
FINM 7006 Formula Sheet Summary
This document is a formula sheet for FINM 7006, providing essential formulas for various financial concepts. It appears to be a reference for students in the Master of Finance program at ANU.
1. Time Value of Money (TVM)
- Future Value (FV):
- For a single sum:
FV = F x (1 + r)^n - For an ordinary annuity:
FV = F x [(1 + r)^n - 1] / r
- For a single sum:
- Present Value (PV):
- For a single sum:
PV = F x [1 - (1 + r)^-n] / r - For an ordinary annuity:
PV = F x [1 - (1 + r)^-n] / r
- For a single sum:
- Perpetuity Due:
PV = F + [F / (1 + r)](This formula seems incomplete or a variation, typically PV of perpetuity due is F + F/r)
2. Valuation of Securities
- Valuation of a Stock with Constant Dividend:
p = D1 / (r - g)- Where
D1is the dividend next period,ris the required rate of return, andgis the constant growth rate.
- Valuation of a Stock with Constant Growing Dividend:
p = D0 * (1 + g) / (r - g)- Where
D0is the current dividend.
3. Investment Decisions
- Cash Flows (Xt):
Xt = (1 - T) * (Rt - Et) + T*Dt - It- This formula likely represents after-tax cash flows, considering revenues (
Rt), expenses (Et), tax rate (T), depreciation (Dt), and investment (It).
- Net Present Value (NPV):
NPV = Σ [Xt / (1 + r)^t] - Initial Investment(The provided formulaNPV = Σ [Xt / (1 + r)^t] - I0is a standard representation).
- Annuity Factor (AE):
AE = [1 - (1 + r)^-n] / r(This is the present value of an ordinary annuity factor).
4. Portfolio Management and Risk
- Expected Portfolio Return (E(Tp)):
E(Tp) = w1 * E(r1) + w2 * E(r2)- Where
wrepresents weights andE(r)represents expected returns of individual assets.
- Portfolio Variance (σ^2):
σ^2 = w1^2 * σ1^2 + w2^2 * σ2^2 + 2 * w1 * w2 * σ12- Where
σ^2represents variances andσ12represents the covariance between assets 1 and 2.
- Minimum Variance Portfolio:
- Formulas are provided for calculating the weights (
w1,w2) of the minimum variance portfolio. w2 = (σ1^2 - σ12) / (σ1^2 + σ2^2 - 2 * σ12)w1 = 1 - w2
- Formulas are provided for calculating the weights (
- Capital Asset Pricing Model (CAPM):
- Expected return of an asset
i:E(ri) = rf + βi * [E(rm) - rf] - Where
rfis the risk-free rate,βiis the beta of asseti, andE(rm)is the expected market return.
- Expected return of an asset
5. Rates of Return
- Average Rate of Return:
- Arithmetic Mean:
(1/n) * (r1 + r2 + ... + rn) - Geometric Mean:
[(1 + r1) * (1 + r2) * ... * (1 + rn)]^(1/n) - 1
- Arithmetic Mean:
- Relationship between Holding Period Return (Hp) and Period Return (rp):
Hp = n * rp(This seems to represent total return over n periods if rp is a periodic rate)rp = (1 + Hp)^(1/n) - 1(This is the compound annual growth rate formula)re = (1 + rp)^n - 1(This likely relates effective annual ratereto periodic raterpovernperiods)rp = (1 + re)^(1/n) - 1re = (1 + i_p)^n - 1(Wherei_pmight be a nominal rate compoundedntimes per period)n = n * (1 + re)(This formula appears incorrect or context-specific).
6. Cost of Capital
- Weighted Average Cost of Capital (WACC):
WACC = (1 - T) * Wd * rd + Wps * rps + We * re- Where
Wrepresents weights,rrepresents costs, and subscriptsd,ps,edenote debt, preferred stock, and equity, respectively.Tis the corporate tax rate.
- Cost of Equity (re):
re = rf + β * [E(rm) - rf](CAPM formula applied to equity)re = (D1 / P0) + g(Dividend Growth Model)
- Cost of Debt (rd):
rd = Yield to Maturity (YTM)on the company's debt.
- Capital Structure Weights:
Wd = D / (D + P + E)Wps = P / (D + P + E)We = E / (D + P + E)- Where
D,P, andErepresent the market values of debt, preferred stock, and equity.
7. Derivatives
- Call-Put Parity:
c = p + S0 - X * (1 + rf)^-T- Where
cis the price of a call option,pis the price of a put option,S0is the current stock price,Xis the strike price,rfis the risk-free rate, andTis the time to expiration.
- Forward Contracts:
- Forward Price (F):
F = S0 * (1 + rf + q)^T(for assets with storage costsq)F = S0 * (1 + rf - d)^T(for assets with continuous dividend yieldd)
- Forward Price (F):
- Futures Contracts:
- Payoff:
- Long position:
ST - F(whereSTis the spot price at expiration) - Short position:
F - ST
- Long position:
- Payoff:
8. Other Notations
- B: Likely refers to Bank Accept Bills.
- Xt: Represents cash flows at time
t. - I0: Initial investment.
- σ12: Covariance between asset 1 and asset 2.
- P12: Correlation coefficient between asset 1 and asset 2.
- Xiaotong 小红书号:278284926: Appears to be a personal identifier or social media handle.
- ANU Master of Finance 22届毕业生: Indicates the affiliation and graduation year of the creator.
Lecture 1 汇总(Foundations of Finance — The Time Value of Money)
1. 讲座目标与简介
- 本讲旨在介绍金融数学的基础知识,帮助理解金融工具定价等后续内容。
- 重点解答:“为什么今天的一美元比未来的一美元更有价值?” 以及 “如何计算未来某时刻的一美元在今天值多少钱?”[1]Source: Lecture 1 .pptxAustralian National University Foundations of Finance Lecture 1 The Time Value of Money: An Introduction to Financial Mathematics SATURSIM PRIMUM COGNOSCERE KERLIL Australian National University 1. Lecture Overview This week will provide you with an introduction to financial mathematics. The lecture is designed to ensure you have the tools necessary to calculate the value of financial instruments later in the course. Today's lecture will consider: - Why a dollar received today is worth more than a dollar received any time after today - How to calculate what a dollar received at some time in the future is worth today SATURAM PRIMUM COGNOSCERE KERLIL Australian National University[16]Source: Lecture 1 .pptx2. The Time Value of Money " If we receive $1 today, we can invest it, earn interest and end up with more than $1 at any time in the future " Given this, if offered the choice, you would prefer receiving $1 today over receiving $1 at some future date SATURAM PRIMUM COGNOSCERE KERLIL Australian National University 2. 1 Future Value of a Single Cash Flow Example 1: We received $1 today and decided to deposit it in the bank for a period of 2 years. If, during this time, the $1 earns interest at a rate of 10% per annum (calculated at the end of each year), what is it's value in 2 years' time? NATURAM PRIMUN ATUM COGNOSCERE RERLITT
2. 货币的时间价值 (The Time Value of Money)
- 核心思想:
$$如果我们今天收到1美元,可以立刻投资赚取利息,因此在未来的任何时候都能获得超过1美元的价值。因此,人们总是偏好“越早收到钱越好”。$$[16]Source: Lecture 1 .pptx2. The Time Value of Money " If we receive $1 today, we can invest it, earn interest and end up with more than $1 at any time in the future " Given this, if offered the choice, you would prefer receiving $1 today over receiving $1 at some future date SATURAM PRIMUM COGNOSCERE KERLIL Australian National University 2. 1 Future Value of a Single Cash Flow Example 1: We received $1 today and decided to deposit it in the bank for a period of 2 years. If, during this time, the $1 earns interest at a rate of 10% per annum (calculated at the end of each year), what is it's value in 2 years' time? NATURAM PRIMUN ATUM COGNOSCERE RERLITT
3. 单一现金流的现值与终值计算(Future Value, Present Value of a Single Cash Flow)
-
未来价值 (Future Value, FV):
若 $F_0$ 经历 $n$ 期、利率 $r$,未来值: $$FV = F_0 \times (1 + r)^n $$ -
现值 (Present Value, PV):
未来价值 $F$ 折现回现在: $$PV = \frac{F}{(1 + r)^n} $$
4. 多期(不同金额)现金流的现值与终值(Multiple Cash Flows)
- 计算多笔现金流的总未来价值/现值时,要将每笔单独折现或复利后相加[30]Source: Lecture 1 .pptxAustralian National University
2. 3 Future Value of Multiple Cash Flows
Solution:
In answering this question, it is useful to draw a timeline:
We want to calculate the total value of the 3 deposits here.
t=0
t=1
t=2
t=3
Deposit $100[36]Source: Lecture 1 .pptx2. 3 Future Value of Multiple Cash Flows
Solution: Given this, we can calculate the total value of these deposits in exactly three years' time as follows:
FV2 = $100(1. 1)2 + $200(1. 1) + $500 = $121 + $220 + $500 = $841
SATURAM PRIMUM COGNOSCERE KERLIL
Australian National University
2. 3. 1 Present Value of Multiple Cash Flows
When calculating the present value of multiple cash flows:
- Discount each cash flow individually and sum the resultant values to calculate the present value
- A shortcut method exists IF all the cash flows are of identical size (stay tuned)
CERE RERLA:
- 例:3年内依次收到 $100, $200, $500,10%利率,3年后总额: $$FV = 100 \times (1.1)^2 + 200 \times (1.1) + 500 = 121 + 220 + 500 = 841$$
5. 年金 (Annuities)
-
定义:一系列等额、等间隔的现金流
-
种类:
- 普通年金(Ordinary Annuity):首笔现金流在一期之后发生。例如房贷还款[19]Source: Lecture 1 .pptxt=1 t=2 t=3 t=4 t=n An example of an ordinary annuity is the series of repayments made on a bank loan SATURAM PRIMUM COGNOSCERE RERLI Australian National University 2. 4. 1 Future Value of Annuities 2) Annuity Due[26]Source: Lecture 1 .pptxAustralian National University 2. 4. 1 Future Value of Annuities 1) Ordinary Annuity An ordinary annuity is one where the time between now and the first cash flow is the same as the time separating each subsequent cash flow. Diagrammatically, an ordinary annuity comprising n cash flows of $F can be shown as: $F $F $F $F $F t=0
- 即付年金(Annuity Due):首笔现金流立刻发生,例如租金[32]Source: Lecture 1 .pptxNATURAM PRIM RE BERLIN UM COGNO Australian National University 2. 4 Future Value of Multiple (Equal) Cash Flows Now, let's say that the amounts we are to deposit are equal in value. Let's say we plan to deposit $100 at the end of each year for the next 3 years. A finite number of cash flows that are equal in their amounts and are evenly spaced are called annuities. There are 3 types of annuities, which we will now consider in turn: - Ordinary Annuities - Annuities Due - Deferred Annuities SATURAM PRIMUM COGNOSCERE RERLI
- 递延年金(Deferred Annuity):首笔现金流在未来某时点发生[17]Source: Lecture 1 .pptxPV =F + F 1- (1+r)"(n-1) r L 1- (1. 10)-9 0. 10 =500+500 =$3,379. 51 When we compare this with the present value of the ordinary annuity from a previous slide, we see the present value of the annuity due is higher. Why? SATURAM PRIMUM COGNOSCERE KERLIL Australian National University 2. 5. 3 Present Value of Annuities 3) Deferred Annuity Recall that a deferred annuity is simply an annuity that commences as some time in the future. To calculate the present value of a deferred annuity that commences in m periods and comprises n cash flows of $F, we use the following:
-
年金现值公式(以普通年金为例): $$PV = F \times \frac{1 - (1 + r)^{-n}}{r} $$
- $F$ = 每期现金流,$n$ = 期数,$r$ = 利率[21]Source: Lecture 1 .pptxOrdinary Annuity Example The present value of an ordinary annuity comprising 10 annual cash flows of $500 each is calculated as follows given an interest rate of 10% p. a . : PV =F 1- (1+r)-" r - 10 1- (1. 10)-10 0. 10 =500 =$3,072. 28 SATURAM PRIMUM COGNOSCERE KERLIL Australian National University 2. 5. 2 Present Value of Annuities 2) Annuity Due Recall that an annuity due is one where the first cash flow occurs immediately. To calculate the present value of an annuity due comprising n cash flows of $F, we use the following equation:[22]Source: Lecture 1 .pptx1) Ordinary Annuity Recall that an ordinary annuity is one where the time between now and the first cash flow is the same as the time separating each subsequent cash flow. To calculate the present value of an ordinary annuity comprising n cash flows of $F, we use the following equation: PV = 1- (1+r)"" r F + + ++ (1+r)" F =F F (1+r) (1+r)2 =FA nr NATURAM PRIMUN IMUM COGNOSCERE RERLIL Australian National University 2. 5. 1 Present Value of Annuities
-
要点:
6. 永续年金(Perpetuities)
- 普通永续年金现值: $$PV = \frac{F}{r} $$
- 即付永续年金现值: $$PV = \frac{F}{r} \times (1 + r) $$[41]Source: Lecture 1 .pptx500 PV = (1. 10)4 - 10 0. 10 =$2,098. 41 What about if there are an infinite number of cash flows? MAILMAN PRIMUM COGNOSCERE BERLIN Australian National University 2. 6 Present Value of Perpetuities A perpetuity is a series of equally spaced cash flows of same dollar value that continues on forever. As with annuities, perpetuities can be broken into three types based on the time until the first cash flow occurs, namely: - Ordinary Perpetuities - Perpetuities Due
7. 利率的选择与换算 (Interest Rates and Conversion)
- 需保证“利率 $r$”和“期数 $n$”相匹配(即都以年、月、周为单位)[24]Source: Lecture 1 .pptxSATURAM PRIMUM COGNO Australian National University 3. Interest Rates for Time Value of Money Calculations In time value of money calculations, it is very important to ensure that each piece of information included in calculations is expressed (and thought of) in terms of the time frame. Consider the following examples Example 1: When calculating the present (or future) value of a single cash flow, if the number of periods (n) is expressed in terms of the number of years till the cash flow is received, then the interest rate (r) used must also be expressed as a rate applied once a year. In the case of a single cash flow, n and r could also be expressed as semi-annual figures, etc and the answer would be the same SCERE RERLA SATURAM PRIMUM COGN GNOSC Australian National University[38]Source: Lecture 1 .pptx4. Interest Rates for Time Value of Money Calculations Examples (Continued) - The loan will be repaid over 25 years; - Interest is payable at a fixed rate of 12% p. a. compounded annually; - Repayments are to be made fortnightly; and, - The first repayment will be made exactly 2 weeks from today. i) Borrowings(PV) = ? ii) n = 25 years x 26 (periods in a year) = 650 fortnightly periods iii) r = (1 + 0. 12)1/26 - 1 = 0. 004368309 (period rate - fortnightly) iv) F=$1,500 (per fortnight)
- 年有效利率、名义利率、周期利率的换算(年利率转月利率等)
- 实例:$12%$年利率按年复利,要转化成每期利率再用于计算[48]Source: Lecture 1 .pptxPeriodic Rate -Czy-1 n ZKA Periodic Rate r = r n r p p n Annual Nominal Rate
8. 主要提示
如需详细公式推导或举例、特殊类型年金等补充,欢迎随时提问!
Certainly! Here is a detailed summary of Lecture 1 ("The Time Value of Money: An Introduction to Financial Mathematics") in English, based strictly on the extracted contents from your course files:
Lecture 1 Summary: The Time Value of Money (TVM)
1. Lecture Overview and Objective
- The first lecture is an introduction to financial mathematics, preparing you for valuing financial instruments.
- Key questions addressed:
- Why is a dollar received today worth more than a dollar received in the future?
- How do we calculate the present value of money received in the future? [31]Source: Lecture 1 .pptxAustralian National University Foundations of Finance Lecture 1 The Time Value of Money: An Introduction to Financial Mathematics SATURSIM PRIMUM COGNOSCERE KERLIL Australian National University 1. Lecture Overview This week will provide you with an introduction to financial mathematics. The lecture is designed to ensure you have the tools necessary to calculate the value of financial instruments later in the course. Today's lecture will consider: - Why a dollar received today is worth more than a dollar received any time after today - How to calculate what a dollar received at some time in the future is worth today SATURAM PRIMUM COGNOSCERE KERLIL Australian National University
2. Core Principle: Time Value of Money
- A dollar today can be invested to earn more, so it is worth more than a dollar received later.
- Given a choice, rational individuals prefer to receive money sooner rather than later [38]Source: Lecture 1 .pptx2. The Time Value of Money " If we receive $1 today, we can invest it, earn interest and end up with more than $1 at any time in the future " Given this, if offered the choice, you would prefer receiving $1 today over receiving $1 at some future date SATURAM PRIMUM COGNOSCERE KERLIL Australian National University 2. 1 Future Value of a Single Cash Flow Example 1: We received $1 today and decided to deposit it in the bank for a period of 2 years. If, during this time, the $1 earns interest at a rate of 10% per annum (calculated at the end of each year), what is it's value in 2 years' time? NATURAM PRIMUN ATUM COGNOSCERE RERLITT.
3. Future Value (FV) and Present Value (PV) of a Single Cash Flow
-
Future Value: The value at a future date of a sum invested today: $$ FV = F_0 \times (1 + r)^n $$
- $F_0$: Initial amount (present value)
- $r$: Interest rate per period
- $n$: Number of periods
-
Present Value: The value today of money to be received in the future: $$ PV = \frac{F}{(1 + r)^n} $$
- $F$: Future cash flow
-
Important: The period (years, months, etc.) for $n$ and $r$ must match [34]Source: Lecture 1 .pptxSATURAM PRIMUM COGNO Australian National University 3. Interest Rates for Time Value of Money Calculations In time value of money calculations, it is very important to ensure that each piece of information included in calculations is expressed (and thought of) in terms of the time frame. Consider the following examples Example 1: When calculating the present (or future) value of a single cash flow, if the number of periods (n) is expressed in terms of the number of years till the cash flow is received, then the interest rate (r) used must also be expressed as a rate applied once a year. In the case of a single cash flow, n and r could also be expressed as semi-annual figures, etc and the answer would be the same SCERE RERLA SATURAM PRIMUM COGN GNOSC Australian National University, [38]Source: Lecture 1 .pptx2. The Time Value of Money " If we receive $1 today, we can invest it, earn interest and end up with more than $1 at any time in the future " Given this, if offered the choice, you would prefer receiving $1 today over receiving $1 at some future date SATURAM PRIMUM COGNOSCERE KERLIL Australian National University 2. 1 Future Value of a Single Cash Flow Example 1: We received $1 today and decided to deposit it in the bank for a period of 2 years. If, during this time, the $1 earns interest at a rate of 10% per annum (calculated at the end of each year), what is it's value in 2 years' time? NATURAM PRIMUN ATUM COGNOSCERE RERLITT.
4. Multiple Cash Flows: Present and Future Values
- For multiple, possibly unequal cash flows, calculate the PV or FV of each cash flow separately and sum them [41]Source: Lecture 1 .pptxNATURAM PRIMUN TUM COGNOSCERE RERLIL Australian National University 2. 3. 1 Present Value of Multiple Cash Flows Example I expect to receive the following cash flows over the next four years Time 1 year 2 years 3 years 4 years, [57]Source: Lecture 1 .pptxCash Flow $300 $290 $500 $580 What is the present value of these cash flows given they are received at the end of the relevant year and the interest rate is 10% p. a . ? NATURAM PRIMUN TUM COGNOSCERE RERLIL Australian National University 2. 3. 1 Present Value of Multiple Cash Flows.
- Example: If you receive $100, $200, $500 in years 1, 2, and 3 at 10% per annum, the future value in year 3 is: $$ FV = 100 \times (1.1)^2 + 200 \times (1.1)^1 + 500 $$
- Timelines are helpful to visualize cash flows and match the flow frequency with interest rates [52]Source: Lecture 1 .pptxDeposit $200 Deposit $500 We can see from the timeline that, in exactly 3 years' time: - The first deposit ($100) will have been in the bank for exactly two years; - The second deposit ($200) will have been in the bank for exactly one year; and, - The third deposit ($500) will be deposited in the bank immediately before the time at which we wish calculate the total value - More importantly, timelines show the spacing between cash flows (useful later in the lecture when identifying what interest rate to use in calculations) NATURAM PRIMUN TUM COGNOSCERE RERLIL Australian National University.
5. Annuities: Series of Equal, Periodic Cash Flows
- Annuity: Equal payments made at regular intervals.
- Ordinary Annuity: Payments at the end of each period.
- Annuity Due: Payments at the start of each period.
- Deferred Annuity: Payments starting at a future period [27]Source: Lecture 1 .pptxNATURAM PRIM RE BERLIN UM COGNO Australian National University 2. 4 Future Value of Multiple (Equal) Cash Flows Now, let's say that the amounts we are to deposit are equal in value. Let's say we plan to deposit $100 at the end of each year for the next 3 years. A finite number of cash flows that are equal in their amounts and are evenly spaced are called annuities. There are 3 types of annuities, which we will now consider in turn: - Ordinary Annuities - Annuities Due - Deferred Annuities SATURAM PRIMUM COGNOSCERE RERLI.
- Formulas:
- Present Value of Ordinary Annuity: $$ PV = F \times \frac{1 - (1 + r)^{-n}}{r} $$
- Future Value of Ordinary Annuity: $$ FV = F \times \frac{(1 + r)^n - 1}{r} $$
- Present Value of Annuity Due: Use the ordinary annuity formula and multiply by $(1 + r)$ [40]Source: Lecture 1 .pptxPV =F + + + + (1+r)"-1 F =F+F F (1+r) ( 1- (1+r)"(n-1) r F (1+r)2 n-1 =F + FA n- 1r SATURAM PRIMUM COGNOSCERE KERLIL Australian National University 2. 5. 2 Present Value of Annuities Annuity Due Example The present value of an annuity due comprising 10 annual cash flows of $500 each is calculated as follows given an interest rate of 10% p. a . :, [42]Source: Lecture 1 .pptx=FS nr (1 +r) SATURAM PRIMUM COGNOSCERE KERLIL Australian National University 2. 5 Present Value of Annuities The formula used to calculate the present value of an annuity differs based on the type of annuity being considered. Let's consider each type of annuity in turn NATURAM PRIMUN IMUM COGNOSCERE RERLIL Australian National University 2. 5. 1 Present Value of Annuities, [47]Source: Lecture 1 .pptxOrdinary Annuity Example The present value of an ordinary annuity comprising 10 annual cash flows of $500 each is calculated as follows given an interest rate of 10% p. a . : PV =F 1- (1+r)-" r - 10 1- (1. 10)-10 0. 10 =500 =$3,072. 28 SATURAM PRIMUM COGNOSCERE KERLIL Australian National University 2. 5. 2 Present Value of Annuities 2) Annuity Due Recall that an annuity due is one where the first cash flow occurs immediately. To calculate the present value of an annuity due comprising n cash flows of $F, we use the following equation:.
6. Perpetuities: Infinite Series of Equal Cash Flows
- Ordinary Perpetuity: Constant cash flows continuing forever, with the first received one period from now: $$ PV = \frac{F}{r} $$
- Perpetuity Due: The first cash flow is received immediately, and forever after (PV is higher).
- Deferred Perpetuity: Payments start after several periods, and are then perpetual [32]Source: Lecture 1 .pptxMUM COGNOSCERE RERLIL Australian National University 2. 6. 1 Present Value of Perpetuities Ordinary Perpetuity Example The present value of an ordinary perpetuity that comprises annual cash flows of $500 each is calculated as follows given an interest rate of 10% p. a . : PV = 500 0. 1 =$5,000 NATURAM PRIMUN MUM COGNOSCERE RERLIL Australian National University 2. 6. 2 Present Value of Perpetuities, [45]Source: Lecture 1 .pptx- Deferred Perpetuities NATURAM PRIMUN MUM COGNOSCERE RERLIL Australian National University 2. 6. 1 Present Value of Perpetuities 1) Ordinary Perpetuity Ordinary Perpetuity: The time between now and the first cash flow is the same as the time separating subsequent cash flows. The only difference between an ordinary perpetuity and an ordinary annuity is that, in the case of the ordinary perpetuity, cash flows continue forever. The present value of an ordinary perpetuity comprising individual cash flows of $F is calculated as: PV =- F r NATURAM PRIMUN, [48]Source: Lecture 1 .pptxNATURAM PRIMUN TUM COGNOSCERE RERLIL Australian National University 2. 6. 3 Present Value of Perpetuities Deferred Perpetuity Example The present value of a deferred perpetuity that commences in 4 years and comprises annual cash flows of $500 each is calculated as follows given an interest rate of 10% p. a . : PV =- r m- 1 F (1+r)' 500 0. 1 = (1. 10)3 =$3,756. 57 NATURAM PRIMUN TUM COGNOSCERE RERLIL, [55]Source: Lecture 1 .pptx500 PV = (1. 10)4 - 10 0. 10 =$2,098. 41 What about if there are an infinite number of cash flows? MAILMAN PRIMUM COGNOSCERE BERLIN Australian National University 2. 6 Present Value of Perpetuities A perpetuity is a series of equally spaced cash flows of same dollar value that continues on forever. As with annuities, perpetuities can be broken into three types based on the time until the first cash flow occurs, namely: - Ordinary Perpetuities - Perpetuities Due.
7. Interest Rate Conventions & Calculations
- Always match the interest rate's compounding period with the cash flow period (annual, semiannual, etc.) [34]Source: Lecture 1 .pptxSATURAM PRIMUM COGNO
Australian National University
3. Interest Rates for Time Value of Money Calculations
In time value of money calculations, it is very important to ensure that each piece of information included in calculations is expressed (and thought of) in terms of the time frame. Consider the following examples
Example 1:
When calculating the present (or future) value of a single cash flow, if the number of periods (n) is expressed in terms of the number of years till the cash flow is received, then the interest rate (r) used must also be expressed as a rate applied once a year. In the case of a single cash flow, n and r could also be expressed as semi-annual figures, etc and the answer would be the same
SCERE RERLA
SATURAM PRIMUM COGN
GNOSC
Australian National University, [50]Source: Lecture 1 .pptxWhere: re = annual effective rate I'n = nominal annual rate rp = periodic rate (eg monthly, quarterly, etc)
n = number of compounding periods per annum
SCERE RERLA
n
n
RE BERLIN
JATURAM PRIMUM COGNO
Australian National University
3. Interest Rates for Time Value of Money Calculations
Examples.
- Example: For monthly cash flows, use a monthly rate.
- Interest Rate Conversions:
- Effective Annual Rate (EAR):
$$ r_e = (1 + r_p)^m - 1 $$
- $r_p$: periodic rate,
- $m$: number of periods per year.
- Effective Annual Rate (EAR):
$$ r_e = (1 + r_p)^m - 1 $$
- Example of Conversion: 12% per annum compounded quarterly:
$$ r_e = \left(1 + \frac{0.12}{4}\right)^4 - 1 = 12.55% $$
- For other compounding frequencies (e.g., fortnightly), convert the annual rate accordingly [46]Source: Lecture 1 .pptx4. Interest Rates for Time Value of Money Calculations Examples (Continued) - The loan will be repaid over 25 years; - Interest is payable at a fixed rate of 12% p. a. compounded annually; - Repayments are to be made fortnightly; and, - The first repayment will be made exactly 2 weeks from today. i) Borrowings(PV) = ? ii) n = 25 years x 26 (periods in a year) = 650 fortnightly periods iii) r = (1 + 0. 12)1/26 - 1 = 0. 004368309 (period rate - fortnightly) iv) F=$1,500 (per fortnight), [51]Source: Lecture 1 .pptx" Calculate the annual effective interest rate given an interest rate of 12% p. a. compounded quarterly - Conversion: r to re re =(1+n)n - 1 n =(1+ -) - 1 0. 12 4 4 =0. 1255 =12. 55%p. a. CERE RERLA SATURAM PRIMUM COGNO Australian National University 3. Interest Rates for Time Value of Money Calculations Examples (Continued).
8. Key Takeaways
- The time value of money underpins all financial math and instrument valuation.
- Use timelines and be careful to align rates and periods.
- Understand and apply formulas for present and future values of single/multiple cash flows, annuities, and perpetuities.
- Master converting between different types of interest rates and matching them to cash flow timing.
If you need formula derivations, example walkthroughs, or summary tables, just let me know!
Summary of FINM1001: Foundations of Finance Concepts
This document outlines key concepts and problem-solving techniques in finance, focusing on time value of money calculations, including present value, future value, annuities, and perpetuities.
Core Concepts and Calculations
The document demonstrates how to calculate the value of financial instruments and loan repayments based on various interest rates and compounding frequencies.
1. Present Value (PV) and Future Value (FV) Calculations
-
General Principle: The core idea is to discount future cash flows back to their present value or compound present amounts to their future value, considering the time value of money.
-
Compounding Frequency: The frequency of interest compounding significantly impacts the final value. More frequent compounding (e.g., daily vs. annually) generally leads to a higher future value for investments and a lower present value for liabilities, due to the effect of "interest on interest."
-
Example: Calculating the future value of $500 invested for 4 years at 10% p.a.
- Annually compounded: FV = $500(1.10)^4 = $732.05
- Daily compounded: The future value would be greater due to more frequent compounding.
-
Example: Calculating the present value of a loan with monthly repayments.
- Monthly compounding (10% p.a.): The present value (amount borrowed) is calculated using the ordinary annuity formula with monthly adjustments for interest rate and periods.
- Annual compounding: The amount borrowed would be higher because there is less compounding, meaning a larger portion of repayments goes towards the principal.
-
2. Annuities
-
Definition: A series of equal payments made at regular intervals.
-
Application: Used for calculating loan balances and the value of investments with regular payouts.
- Example: A car loan with annual payments of $5,000 over five years at 6% p.a.
- To find the outstanding balance after one year (four years remaining), the present value of the remaining four payments is calculated: PV = $5,000 * [1 - (1.06)^-4] / 0.06 = $17,325.53.
- To find the outstanding balance after four years (one year remaining), the present value of the single remaining payment is calculated: PV = $5,000 / (1.06)^1 = $4,716.98.
- Example: A car loan with annual payments of $5,000 over five years at 6% p.a.
3. Perpetuities
-
Definition: A stream of equal cash flows that continue forever.
-
Valuation: The present value of a perpetuity is calculated by dividing the cash flow by the interest rate.
-
Example: Security Y pays $2,000 per year forever at an 8% p.a. interest rate.
- PV = $2,000 / 0.08 = $25,000.
-
Comparison with Finite Annuities: A perpetuity is more valuable than a finite annuity (e.g., Security Z paying $2,000 for 20 years) because the cash flows are infinite. However, cash flows far in the future have very little present value due to heavy discounting.
-
Example: A British government consol bond paying £100 per year forever at 4% p.a.
- Value immediately after payment (first payment at period 1): PV = £100 / 0.04 = £2,500.
- Value immediately before payment (first payment at time zero): PV = £100 + (£100 / 0.04) = £2,600.
-
4. Multiple Cash Flows
-
Methodology: When dealing with multiple cash flows occurring at different times, each cash flow is discounted or compounded individually to a common point in time (usually the present or a specific future date), and then these values are summed.
-
Example: An investment repays $40,000 in 5 years and $60,000 in 10 years, with a 12% p.a. interest rate compounded monthly.
- Step 1: Calculate the monthly interest rate: 12% p.a. / 12 months = 1%.
- Step 2: Discount each cash flow to the present value:
- PV of $40,000 = $40,000 / (1 + 0.01)^60
- PV of $60,000 = $60,000 / (1 + 0.01)^120
- Step 3: Add the discounted values to find the total present value.
-
Example: Calculating a bank account balance with different deposits at different times.
- Each deposit is compounded forward to the target date (3 years from today) using the appropriate number of compounding periods.
- FV = $50(1.10)^2 + $100(1.10)^1 + $150 = $320.50 (for annual compounding).
- Daily compounding would result in a higher balance.
-
5. Present Value for Target Accumulation
-
Methodology: To find the amount to deposit now to reach a future target sum, calculate the present value of that future sum.
- Example: Accumulate $9,500 in 3 years.
- At 10% p.a. compounded annually: PV = $9,500 / (1.10)^3 = $7,137.49.
- At 8% p.a. compounded annually: PV = $9,500 / (1.08)^3 = $7,541.41.
- At 8% p.a. compounded monthly: The interest rate per period is 8%/12, and the number of periods is 312. PV = $9,500 / (1 + 0.08/12)^(312). This value is less than the annual compounding case because more frequent compounding allows the deposit to grow faster, requiring a smaller initial deposit.
- Example: Accumulate $9,500 in 3 years.
Key Takeaways
- Time Value of Money: Money today is worth more than the same amount in the future due to its earning potential.
- Compounding: The process of earning interest on previously earned interest. More frequent compounding increases the effective return.
- Discounting: The process of calculating the present value of future cash flows. The discount rate reflects the risk and opportunity cost.
- Annuities vs. Perpetuities: Perpetuities offer infinite cash flows, making them theoretically more valuable than finite annuities, though distant cash flows contribute minimally to present value.
- Loan Repayments: The outstanding balance of a loan is the present value of the remaining payments. Paying off a loan earlier typically results in paying less interest overall.
Tutorial 1 Solutions (解析总结) — Foundations of Finance
Question 1:Future Value与复利影响
- 题目:$500投资4年,年利率10%,年复利与日复利各是多少?
- 解析:
- 年复利公式: $$ FV = 500 \times (1.10)^4 = 732.05 $$
- 日复利公式(假设一年365天): $$ FV = 500 \times \left(1 + \frac{0.10}{365}\right)^{365 \times 4} = 745.87 $$
- 结论:复利周期越短(如日复利),终值越高,因为利息“利滚利”次数增加 [1]Source: Tutorial 1 Solutions (1).docxTutorial 1 Solutions Question One Calculate the future value of $500 invested today for a period of 4 years at an interest rate of 10% p. a. compounded annually. Show how and discuss why your answer would change if interest was compounded daily. The future value of this amount given the interest rate compounds annually is $732. 05, and is calculated as follows: FV =$500(1. 10)4 =$732. 05 If the interest rate was compounded daily, the future value of the investment would be greater given the increased impact of compounding. The future value of the investment with daily compounding is calculated as follows: $500(1+ 0,10 ™ 365 =$745. 87 Question Two You have just successfully applied for a home loan. Calculate how much you are borrowing given that the terms of the loan are as follows:, [5]Source: Tutorial 1 Solutions (1).docx$500(1+ 0,10 ™ 365 =$745. 87 Question Two You have just successfully applied for a home loan. Calculate how much you are borrowing given that the terms of the loan are as follows: · Your monthly repayments are $2,500; · The loan is taken over 15 years; and, · The interest rate you will pay on funds borrowed is fixed at 10% p. a. compounded monthly. Show how and discuss why your answer would change if interest were compounded annually. To work how much you borrowed, simply calculate the present value of all repayments. As payments are evenly spaced and identical in amount, we can calculate the present value of the cash flows using the ordinary annuity formula: PV =$2,500.
Question 2:房贷本金的现值计算
- 题目:月还$2,500,共15年,年利率10%(月复利),求贷款本金;并比较年复利情况。
- 解析:
- 先算月利率: $$ r = \frac{0.10}{12} $$ 总期数 $n = 15 \times 12 = 180$
- 现值公式(普通年金): $$ PV = 2,500 \times \frac{1 - (1 + r)^{-n}}{r} = 232,643.59 $$
- 年复利下本金更高,因利息计提频率少,利滚利效应弱 [11]Source: Tutorial 1 Solutions (1).docx1- (1+0. 10)-180 12 0. 10 12 =$232,643. 59 If the interest rate were compounded annually, the amount you borrowed would be higher as there is less compounding of interest and a larger portion of repayments pertaining to the principal. The amount borrowed with annual compounding is calculated as follows: FINM1001: Foundations of Finance 1 r =(1. 10)12 - 1 =0. 0079741 PV =$2,500 1- (1. 0079741)-180 0. 0079741 =$238,461,46 Question Three Calculate the present value of an ordinary perpetuity that comprises one cash flow of $50 at the end of each year given an interest rate of 9% p. a. compounded annually. Show how and discuss why your answer would change if interest were compounded weekly., [12]Source: Tutorial 1 Solutions (1).docx· Your monthly repayments are $2,500; · The loan is taken over 15 years; and, · The interest rate you will pay on funds borrowed is fixed at 10% p. a. compounded monthly. Show how and discuss why your answer would change if interest were compounded annually. To work how much you borrowed, simply calculate the present value of all repayments. As payments are evenly spaced and identical in amount, we can calculate the present value of the cash flows using the ordinary annuity formula: PV =$2,500 1- (1+0. 10)-180 12 0. 10 12 =$232,643. 59 If the interest rate were compounded annually, the amount you borrowed would be higher as there is less compounding of interest and a larger portion of repayments pertaining to the principal. The amount borrowed with annual compounding is calculated as follows: FINM1001: Foundations of Finance.
Question 3:永续年金的现值
- 题目:每年年末收$50,年利率9%,求永续年金现值,并与周复利比较。
- 解析:
- 普通永续现值公式: $$ PV = \frac{50}{0.09} = 555.56 $$
- 如采用周复利(较高折现),则现值更低,约$531.41,因为折现更多次,未来每$50价值降低 [4]Source: Tutorial 1 Solutions (1).docx1 r =(1. 10)12 - 1 =0. 0079741 PV =$2,500 1- (1. 0079741)-180 0. 0079741 =$238,461,46 Question Three Calculate the present value of an ordinary perpetuity that comprises one cash flow of $50 at the end of each year given an interest rate of 9% p. a. compounded annually. Show how and discuss why your answer would change if interest were compounded weekly. PV = $50 0. 09 =$555. 56 If interest rates were compounded weekly, the present value of the perpetuity would be lower due to the increased effects of compounding. The present value of the perpetuity if interest were compounded weekly is: PV =- $50 ((1+°:02)52 - 1) =$531. 41, [9]Source: Tutorial 1 Solutions (1).docx=$238,461,46 Question Three Calculate the present value of an ordinary perpetuity that comprises one cash flow of $50 at the end of each year given an interest rate of 9% p. a. compounded annually. Show how and discuss why your answer would change if interest were compounded weekly. PV = $50 0. 09 =$555. 56 If interest rates were compounded weekly, the present value of the perpetuity would be lower due to the increased effects of compounding. The present value of the perpetuity if interest were compounded weekly is: PV =- $50 ((1+°:02)52 - 1) =$531. 41 Question Four What would be the balance of my bank account exactly 3 years from today if I made deposits in the account as described below and earned interest at a rate of 10% p. a. compounded annually on my account balance: Time (from today).
Question 4:多时点存款终值
- 题目:3年内分期存入$50(第1年)、$100(第2年)、$150(第3年),10%年复利,问3年后账户余额。并比较日复利结果。
- 解析:
- 年复利终值计算: $$ FV = 50 \times (1.1)^2 + 100 \times (1.1) + 150 = 320.50 $$
- 日复利终值更高,理由同上,利息计提次数增多 [14]Source: Tutorial 1 Solutions (1).docxAmount $50 $100 $150 Show how and discuss why your answer would change if interest were compounded daily. As the cash flows are of different sizes, I have to compound each cash flow individually and sum the resultant values in order to calculate the balance of my bank account 3 years from today: FV =$50(1. 10)2 +$100(1. 10)+$150 =$320. 50 FINM1001: Foundations of Finance If interest was compounded daily, my account balance would be higher 3 years from today given the increased impact of compounding: $50(1+0. 19,2 365 2×365 0(1 +0. 10)365 365 +$150, [10]Source: Tutorial 1 Solutions (1).docxFINM1001: Foundations of Finance If interest was compounded daily, my account balance would be higher 3 years from today given the increased impact of compounding: $50(1+0. 19,2 365 2×365 0(1 +0. 10)365 365 +$150 =$321. 58 Question Five 'Mad Dog' McNamara wishes to accumulate $9,500 at the end of three years. How much does he need to deposit now if the interest rate is: a) 10% p. a. compounded annually? b) 8% p. a. compounded annually? c) 8% p. a. compounded monthly? Can you explain why they differ in each case?.
Question 5:目标终值下的现值计算
- 题目:3年后要积累$9,500,分别在(1) 10%年复利、(2) 8%年复利、(3) 8%月复利下,现在需存多少钱?为什么各自不同?
- 解析:
- 10%年复利: $$ PV = \frac{9,500}{(1.10)^3} = 7,137.49 $$
- 8%年复利: $$ PV = \frac{9,500}{(1.08)^3} = 7,541.41 $$
- 8%月复利(月利率 $= 8%/12$,期数 $= 36$): $$ PV = \frac{9,500}{(1 + 0.08/12)^{36}} = 7,478.92 $$
- 差异解释:利率越高,现值越低;复利频率越高(如月复利),现值也越低 [13]Source: Tutorial 1 Solutions (1).docxb) 8% p. a. compounded annually? c) 8% p. a. compounded monthly? Can you explain why they differ in each case? We need to find the present value of the future amount of $9,500. a) PV = (1+r)" FV 1. 103 9500 = $7,137. 49 1. 083 9500 -= $7,541. 41 b) PV = FV (1+r)" c) With monthly compounding, the interest rate must be divided by 12 to find the interest rate per compounding period (r), and the number of years must be multiplied by 12 to find the total number of periods (n). FV PV =-, [15]Source: Tutorial 1 Solutions (1).docxThe answer to (b) is greater than the answer to (a) because the interest rate is lower. The deposit will not earn as much interest under the scenario in part (b), so more needs to be deposited in order to grow to the desired amount. The answer to (c) is less than the answer to (b) because interest is compounded more frequently. This means that the deposit earns 'interest on interest' more often. More frequently throughout the year, interest is calculated and added to the deposit, which means that next time interest is calculated it is calculated on a larger amount. As a result, less needs to be deposited in order to grow to the desired amount. Question Six An investment repays $40,000 in five years and a further $60,000 in 10 years. If the interest rate over the period is 12% p. a compounded monthly, what is the investment's present value? Whenever you have a problem involving multiple cash flows, it is often advisable to draw a diagram showing all cash flows and identifying the value to be calculated. FINM1001: Foundations of Finance PV? 40,000 60,000 There are three steps required to solve this problem. First, you must find the interest rate per compounding period. Second, the cash flows of $40,000 and $60,000 are discounted using the monthly rate of interest over 60 months (5 years *12 compounding periods per year) and 120 months (10 years * 12 compounding periods per year). In the third step the two discounted values are added together 0. 12 =0. 01, [19]Source: Tutorial 1 Solutions (1).docx(1+r)n (1+0. 08) 9500 12 =$7,478. 92 The answer to (b) is greater than the answer to (a) because the interest rate is lower. The deposit will not earn as much interest under the scenario in part (b), so more needs to be deposited in order to grow to the desired amount. The answer to (c) is less than the answer to (b) because interest is compounded more frequently. This means that the deposit earns 'interest on interest' more often. More frequently throughout the year, interest is calculated and added to the deposit, which means that next time interest is calculated it is calculated on a larger amount. As a result, less needs to be deposited in order to grow to the desired amount. Question Six An investment repays $40,000 in five years and a further $60,000 in 10 years. If the interest rate over the period is 12% p. a compounded monthly, what is the investment's present value? Whenever you have a problem involving multiple cash flows, it is often advisable to draw a diagram showing all cash flows and identifying the value to be calculated. FINM1001: Foundations of Finance PV? 40,000.
Question 6:不同时点多笔回款的现值
- 题目:5年后回收$40,000,10年后$60,000,年利率12%,月复利,现值多少?
- 解析:
- 月利率$= 1%$,5年$= 60$月,10年$=120$月
- 现值计算: $$ PV_{40,000} = \frac{40,000}{(1.01)^{60}} $$ $$ PV_{60,000} = \frac{60,000}{(1.01)^{120}} $$ $$ PV_{总} = PV_{40,000} + PV_{60,000} = 40,197.67 $$
- 解析技巧:多期现金流,要分别折现,最后加总 [16]Source: Tutorial 1 Solutions (1).docxWhenever you have a problem involving multiple cash flows, it is often advisable to draw a diagram showing all cash flows and identifying the value to be calculated. FINM1001: Foundations of Finance PV? 40,000 60,000 There are three steps required to solve this problem. First, you must find the interest rate per compounding period. Second, the cash flows of $40,000 and $60,000 are discounted using the monthly rate of interest over 60 months (5 years *12 compounding periods per year) and 120 months (10 years * 12 compounding periods per year). In the third step the two discounted values are added together 0. 12 =0. 01 Monthly interest rate = 12 or 1% per month PV = _40,000 (1+0. 01)60 +, [20]Source: Tutorial 1 Solutions (1).docxMonthly interest rate = 12 or 1% per month PV = _40,000 (1+0. 01)60 + 60,000 == $40,197. 67 Present value of the cash flows (1+0. 01)120 Question Seven a) You have the opportunity to purchase security Y that will pay $2,000 per year forever. At an interest rate of 8% p. a. , compounded annually, what is this security worth? b) An alternative security, Z, will pay $2,000 per year for the next 20 years. Assuming the same interest rate compounded annually, what is this security worth? c) Explain the difference between the values of securities Y and Z..
Question 7:无穷与有限年金的价值比较
- 题目:Y每年付$2,000永久;Z付$2,000共20年,都是8%年复利,求各自现值并对比。
- 解析:
- Y为普通永续: $$ PV = \frac{2,000}{0.08} = 25,000 $$
- Z为有限年金: 用年金现值公式,$PV = 2,000 \times \frac{1 - (1 + 0.08)^{-20}}{0.08}$ $$ PV = 2,000 \times 9.8181 = 19,636.2 $$
- 差异:永续价值更高,但长期未来现金流目前价值极低,所以两者差别其实有限;这也体现贴现的实际意义 [20]Source: Tutorial 1 Solutions (1).docxMonthly interest rate = 12 or 1% per month PV = _40,000 (1+0. 01)60 + 60,000 == $40,197. 67 Present value of the cash flows (1+0. 01)120 Question Seven a) You have the opportunity to purchase security Y that will pay $2,000 per year forever. At an interest rate of 8% p. a. , compounded annually, what is this security worth? b) An alternative security, Z, will pay $2,000 per year for the next 20 years. Assuming the same interest rate compounded annually, what is this security worth? c) Explain the difference between the values of securities Y and Z..
Question 8/9:贷款提前还款分析 – 剩余本金计算
- 应用:若有5年年金贷款,$5000/年,6%年复利,提前1年和提前4年还款各需多少本金?
- 方法:
- 提前1年剩余本金:4年期年金现值 $$ PV = 5,000 \times \frac{1 - (1 + 0.06)^{-4}}{0.06} = 17,325.53 $$
- 提前4年:仅需还最后一笔现金流,折现1年 $$ PV = \frac{5,000}{1.06} = 4,716.98 $$
- 结论:剩余本金始终等于剩余还款的现值总和 [6]Source: Tutorial 1 Solutions (1).docxPayment: 5000 2 5000 4 a) At time 1, the timeline for the remaining loan cash flows becomes: Original time: 1 Current time: 0 Payment: To pay off the loan you must repay the remaining balance. The remaining balance is equal to the present value of the remaining payments. The remaining payments are a 4-year annuity, so: PV =5,000 1- 1. 06)-4 0. 06 =$17,325. 53, [17]Source: Tutorial 1 Solutions (1).docx1- 1. 06)-4 0. 06 =$17,325. 53 b) At time 4, the timeline for the remaining cash flows becomes: Original time: Current time: 1 5000 5 Payment: There is only one remaining payment, one year from now, so: FINM1001: Foundations of Finance PV= 5000 (1. 06 =$4,716. 98 Evaluate: To pay off the loan after owning the vehicle for one year will require $17,325. 53. To pay off the loan after owning the vehicle for four years will require $4,716. 98., [18]Source: Tutorial 1 Solutions (1).docxb) At time 4, the timeline for the remaining cash flows becomes: Original time: Current time: 1 5000 5 Payment: There is only one remaining payment, one year from now, so: FINM1001: Foundations of Finance PV= 5000 (1. 06 =$4,716. 98 Evaluate: To pay off the loan after owning the vehicle for one year will require $17,325. 53. To pay off the loan after owning the vehicle for four years will require $4,716. 98. FINM7006: Applied Foundations of Finance.
知识点总结
- 利率高、复利频率多,使终值变大、现值变小;
- 永续与年金、本金现值、多个不同时点现金流都需分别折现再加总;
- 剩余贷款本金就是剩余还款的现值;
- 公式应用时要注意还款/现金流频率和利率配对!
如需深入解析或更多案例演示,欢迎继续提问!
Here is a comprehensive analysis and solution summary for Tutorial 1 (Foundations of Finance), based on your provided material:
Tutorial 1 Solutions — Detailed Analysis
Question 1:Future Value with Different Compounding
- Calculate the future value of $500 invested for 4 years at 10% p.a., compounded annually and daily.
- Solution:
- Annual compounding:
$$ FV = 500 \times (1.10)^4 = 732.05 $$ - Daily compounding:
$$ FV = 500 \times (1 + \frac{0.10}{365})^{365 \times 4} = 745.87 $$ - Insight: The more frequent the compounding, the larger the future value due to “interest on interest” effects [17]Source: Tutorial 1 Solutions (1).docxTutorial 1 Solutions Question One Calculate the future value of $500 invested today for a period of 4 years at an interest rate of 10% p. a. compounded annually. Show how and discuss why your answer would change if interest was compounded daily. The future value of this amount given the interest rate compounds annually is $732. 05, and is calculated as follows: FV =$500(1. 10)4 =$732. 05 If the interest rate was compounded daily, the future value of the investment would be greater given the increased impact of compounding. The future value of the investment with daily compounding is calculated as follows: $500(1+ 0,10 ™ 365 =$745. 87 Question Two You have just successfully applied for a home loan. Calculate how much you are borrowing given that the terms of the loan are as follows:.
- Annual compounding:
Question 2:Present Value of a Loan (Ordinary Annuity)
- Given: Monthly repayments of $2,500 for 15 years at 10% p.a. compounded monthly.
- Solution:
- Monthly rate: $ r = 0.10 / 12 $
- Number of payments: $ n = 15 \times 12 = 180 $
- Present value formula: $$ PV = 2,500 \times \frac{1 - (1 + r)^{-n}}{r} = 232,643.59 $$
- If compounded annually, the amount borrowed would be higher due to less frequent compounding, so less “interest on interest” is accrued, requiring more principal repayment each period [16]Source: Tutorial 1 Solutions (1).docx· Your monthly repayments are $2,500; · The loan is taken over 15 years; and, · The interest rate you will pay on funds borrowed is fixed at 10% p. a. compounded monthly. Show how and discuss why your answer would change if interest were compounded annually. To work how much you borrowed, simply calculate the present value of all repayments. As payments are evenly spaced and identical in amount, we can calculate the present value of the cash flows using the ordinary annuity formula: PV =$2,500 1- (1+0. 10)-180 12 0. 10 12 =$232,643. 59 If the interest rate were compounded annually, the amount you borrowed would be higher as there is less compounding of interest and a larger portion of repayments pertaining to the principal. The amount borrowed with annual compounding is calculated as follows: FINM1001: Foundations of Finance, [19]Source: Tutorial 1 Solutions (1).docx1- (1+0. 10)-180 12 0. 10 12 =$232,643. 59 If the interest rate were compounded annually, the amount you borrowed would be higher as there is less compounding of interest and a larger portion of repayments pertaining to the principal. The amount borrowed with annual compounding is calculated as follows: FINM1001: Foundations of Finance 1 r =(1. 10)12 - 1 =0. 0079741 PV =$2,500 1- (1. 0079741)-180 0. 0079741 =$238,461,46 Question Three Calculate the present value of an ordinary perpetuity that comprises one cash flow of $50 at the end of each year given an interest rate of 9% p. a. compounded annually. Show how and discuss why your answer would change if interest were compounded weekly..
Question 3:Present Value of a Perpetuity
- An ordinary perpetuity paying $50 at year-end at 9% p.a. compounded annually. Also, compare to weekly compounding.
- Solution:
- Annual compounding:
$$ PV = \frac{50}{0.09} = 555.56 $$ - Weekly compounding:
The present value is slightly lower, because the effective annual rate is higher: $$ PV = \frac{50}{(1.09)^{1/52} - 1} \text{ (over 52 weeks/year)} $$ In the doc, this is calculated as $531.41. - Insight: More frequent compounding reduces present value of perpetuities [7]Source: Tutorial 1 Solutions (1).docx=$238,461,46 Question Three Calculate the present value of an ordinary perpetuity that comprises one cash flow of $50 at the end of each year given an interest rate of 9% p. a. compounded annually. Show how and discuss why your answer would change if interest were compounded weekly. PV = $50 0. 09 =$555. 56 If interest rates were compounded weekly, the present value of the perpetuity would be lower due to the increased effects of compounding. The present value of the perpetuity if interest were compounded weekly is: PV =- $50 ((1+°:02)52 - 1) =$531. 41 Question Four What would be the balance of my bank account exactly 3 years from today if I made deposits in the account as described below and earned interest at a rate of 10% p. a. compounded annually on my account balance: Time (from today), [12]Source: Tutorial 1 Solutions (1).docxPV = $50 0. 09 =$555. 56 If interest rates were compounded weekly, the present value of the perpetuity would be lower due to the increased effects of compounding. The present value of the perpetuity if interest were compounded weekly is: PV =- $50 ((1+°:02)52 - 1) =$531. 41 Question Four What would be the balance of my bank account exactly 3 years from today if I made deposits in the account as described below and earned interest at a rate of 10% p. a. compounded annually on my account balance: Time (from today) 1 year 2 years 3 years, [13]Source: Tutorial 1 Solutions (1).docx1 r =(1. 10)12 - 1 =0. 0079741 PV =$2,500 1- (1. 0079741)-180 0. 0079741 =$238,461,46 Question Three Calculate the present value of an ordinary perpetuity that comprises one cash flow of $50 at the end of each year given an interest rate of 9% p. a. compounded annually. Show how and discuss why your answer would change if interest were compounded weekly. PV = $50 0. 09 =$555. 56 If interest rates were compounded weekly, the present value of the perpetuity would be lower due to the increased effects of compounding. The present value of the perpetuity if interest were compounded weekly is: PV =- $50 ((1+°:02)52 - 1) =$531. 41.
- Annual compounding:
Question 4:Future Value of Uneven Deposits
- Deposits: $50 in 1 year, $100 in 2 years, $150 in 3 years; 10% p.a. compounded annually.
- Solution:
Each cash flow is compounded separately to year 3: $$ FV = 50 \times (1.10)^2 + 100 \times (1.10) + 150 = 320.50 $$- With daily compounding, the balance would be higher due to more frequent compounding [9]Source: Tutorial 1 Solutions (1).docxQuestion Four What would be the balance of my bank account exactly 3 years from today if I made deposits in the account as described below and earned interest at a rate of 10% p. a. compounded annually on my account balance: Time (from today) 1 year 2 years 3 years Amount $50 $100 $150, [8]Source: Tutorial 1 Solutions (1).docxAmount $50 $100 $150 Show how and discuss why your answer would change if interest were compounded daily. As the cash flows are of different sizes, I have to compound each cash flow individually and sum the resultant values in order to calculate the balance of my bank account 3 years from today: FV =$50(1. 10)2 +$100(1. 10)+$150 =$320. 50 FINM1001: Foundations of Finance If interest was compounded daily, my account balance would be higher 3 years from today given the increased impact of compounding: $50(1+0. 19,2 365 2×365 0(1 +0. 10)365 365 +$150.
Question 5:Present Value for Target Sum
- To reach $9,500 in 3 years at (a) 10% p.a. annual, (b) 8% p.a. annual, (c) 8% p.a. monthly compounding, how much to deposit now?
- Solution:
- (a)
$$ PV = \frac{9,500}{(1.10)^3} = 7,137.49 $$ - (b) $$ PV = \frac{9,500}{(1.08)^3} = 7,541.41 $$
- (c)
Monthly rate $ r = 0.08/12 $; $ n = 3\times12 = 36 $ $$ PV = \frac{9,500}{(1 + 0.08/12)^{36}} = 7,478.92 $$ - Insight: Higher rates and more frequent compounding reduce the required deposit [20]Source: Tutorial 1 Solutions (1).docx(1+r)n (1+0. 08) 9500 12 =$7,478. 92 The answer to (b) is greater than the answer to (a) because the interest rate is lower. The deposit will not earn as much interest under the scenario in part (b), so more needs to be deposited in order to grow to the desired amount. The answer to (c) is less than the answer to (b) because interest is compounded more frequently. This means that the deposit earns 'interest on interest' more often. More frequently throughout the year, interest is calculated and added to the deposit, which means that next time interest is calculated it is calculated on a larger amount. As a result, less needs to be deposited in order to grow to the desired amount. Question Six An investment repays $40,000 in five years and a further $60,000 in 10 years. If the interest rate over the period is 12% p. a compounded monthly, what is the investment's present value? Whenever you have a problem involving multiple cash flows, it is often advisable to draw a diagram showing all cash flows and identifying the value to be calculated. FINM1001: Foundations of Finance PV? 40,000.
- (a)
Question 6:Present Value of Multiple Future Cash Flows
- Cash flows: $40,000 in 5 years, $60,000 in 10 years, at 12% p.a. compounded monthly.
- Solution process:
- Monthly rate: $ r = 12%/12 = 1% $
- Discount each cash flow to present: $$ PV_{40,000} = \frac{40,000}{(1.01)^{60}} $$ $$ PV_{60,000} = \frac{60,000}{(1.01)^{120}} $$
- Total present value: Sum the above results [20]Source: Tutorial 1 Solutions (1).docx(1+r)n (1+0. 08) 9500 12 =$7,478. 92 The answer to (b) is greater than the answer to (a) because the interest rate is lower. The deposit will not earn as much interest under the scenario in part (b), so more needs to be deposited in order to grow to the desired amount. The answer to (c) is less than the answer to (b) because interest is compounded more frequently. This means that the deposit earns 'interest on interest' more often. More frequently throughout the year, interest is calculated and added to the deposit, which means that next time interest is calculated it is calculated on a larger amount. As a result, less needs to be deposited in order to grow to the desired amount. Question Six An investment repays $40,000 in five years and a further $60,000 in 10 years. If the interest rate over the period is 12% p. a compounded monthly, what is the investment's present value? Whenever you have a problem involving multiple cash flows, it is often advisable to draw a diagram showing all cash flows and identifying the value to be calculated. FINM1001: Foundations of Finance PV? 40,000.
Question 7:Perpetuity vs. 20-Year Annuity
- Security Y: Pays $2,000 per year forever at 8% p.a. compounded annually.
- Security Z: Pays $2,000 per year for 20 years at 8% p.a. compounded annually.
- Solutions:
- Y: $$ PV_{Y} = \frac{2,000}{0.08} = 25,000 $$
- Z: $$ PV_{Z} = 2,000 \times \frac{1 - (1.08)^{-20}}{0.08} = 19,636.29 $$
- Discussion: Y is more valuable due to infinite payments, but the difference is not huge because future cash flows beyond 20 years are heavily discounted and thus worth little in present value terms [2]Source: Tutorial 1 Solutions (1).docxPVy === 2,000 r 0. 08 =$25,000 a PV -= F 1-(1+r)-" r ]=2,000[ =2,000 0. 08 1-(1. 08)-20 =$19,636. 29 b) c) Y is more valuable than Z because it has more cash flows. The cash flows continue forever, rather than just 20 years. However, it may seem surprising that an infinite stream of cash flows beyond 20 years adds very little to the value of the security - just over $5,000. This is because cash flows in the distant future are discounted very heavily and are worth very little in present value terms. Question Eight The British government has a consol bond outstanding paying £100 per year, forever. Assume the current interest rate is 4% per year (compounded annually). a) What is the value of the bond immediately after a payment is made? b) What is the value of the bond immediately before a payment is made? The timeline for this investment is: 100 2, [3]Source: Tutorial 1 Solutions (1).docxa) You have the opportunity to purchase security Y that will pay $2,000 per year forever. At an interest rate of 8% p. a. , compounded annually, what is this security worth? b) An alternative security, Z, will pay $2,000 per year for the next 20 years. Assuming the same interest rate compounded annually, what is this security worth? c) Explain the difference between the values of securities Y and Z. PVy === 2,000 r 0. 08 =$25,000 a PV -= F 1-(1+r)-" r ]=2,000[ =2,000 0. 08 1-(1. 08)-20 =$19,636. 29 b) c) Y is more valuable than Z because it has more cash flows. The cash flows continue forever, rather than just 20 years. However, it may seem surprising that an infinite stream of cash flows beyond 20 years adds very little to the value of the security - just over $5,000. This is because cash flows in the distant future are discounted very heavily and are worth very little in present value terms. Question Eight The British government has a consol bond outstanding paying £100 per year, forever. Assume the current interest rate is 4% per year (compounded annually). a) What is the value of the bond immediately after a payment is made?, [4]Source: Tutorial 1 Solutions (1).docxc) Y is more valuable than Z because it has more cash flows. The cash flows continue forever, rather than just 20 years. However, it may seem surprising that an infinite stream of cash flows beyond 20 years adds very little to the value of the security - just over $5,000. This is because cash flows in the distant future are discounted very heavily and are worth very little in present value terms. Question Eight The British government has a consol bond outstanding paying £100 per year, forever. Assume the current interest rate is 4% per year (compounded annually). a) What is the value of the bond immediately after a payment is made? b) What is the value of the bond immediately before a payment is made? The timeline for this investment is: 100 2 3 100 FINM1001: Foundations of Finance a)The value of the bond is equal to the present value of the cash flows. By the perpetuity formula, which assumes the first payment is at period 1, the value of the bond is:.
Question 8:Valuing a Consol Bond (British Perpetuity)
- Consol bond pays £100 per year forever at 4% annual interest.
- Solutions:
- (a) Value immediately after a payment:
$$ PV = \frac{100}{0.04} = £2,500 $$ - (b) Value immediately before a payment:
$$ PV = 100 + \frac{100}{0.04} = £2,600 $$ - Insight: The value jumps by the coupon payment when moving from after to just before the next payment [1]Source: Tutorial 1 Solutions (1).docxQuestion Eight The British government has a consol bond outstanding paying £100 per year, forever. Assume the current interest rate is 4% per year (compounded annually). a) What is the value of the bond immediately after a payment is made? b) What is the value of the bond immediately before a payment is made? The timeline for this investment is: 100 2 3 100 FINM1001: Foundations of Finance a)The value of the bond is equal to the present value of the cash flows. By the perpetuity formula, which assumes the first payment is at period 1, the value of the bond is: PV = 100 0. 04 =, [6]Source: Tutorial 1 Solutions (1).docx£2,500 b)The value of the bond is equal to the present value of the cash flows. The first payment will be received at time zero. The cash flows are the perpetuity plus the payment that will be received immediately: PV=100+ 100 0. 04=£2,600 Question Nine When you purchased your car, you took out a five-year annual-payment loan with an interest rate of 6% per year (compounded annually). The annual payment on the car is $5,000. You have just made a payment and have now decided to pay the loan off by repaying the outstanding balance. What is the payment amount if: a) You have owned the car for one year (so there are four years left on the loan)? b) You have owned the car for four years (so there is one year left on the loan)? The timeline for the loan cash flows at time 0 is as follows: Time: 0 1, [10]Source: Tutorial 1 Solutions (1).docxPV = 100 0. 04 = £2,500 b)The value of the bond is equal to the present value of the cash flows. The first payment will be received at time zero. The cash flows are the perpetuity plus the payment that will be received immediately: PV=100+ 100 0. 04=£2,600 Question Nine When you purchased your car, you took out a five-year annual-payment loan with an interest rate of 6% per year (compounded annually). The annual payment on the car is $5,000. You have just made a payment and have now decided to pay the loan off by repaying the outstanding balance. What is the payment amount if: a) You have owned the car for one year (so there are four years left on the loan)? b) You have owned the car for four years (so there is one year left on the loan)? The timeline for the loan cash flows at time 0 is as follows:, [11]Source: Tutorial 1 Solutions (1).docx3 100 FINM1001: Foundations of Finance a)The value of the bond is equal to the present value of the cash flows. By the perpetuity formula, which assumes the first payment is at period 1, the value of the bond is: PV = 100 0. 04 = £2,500 b)The value of the bond is equal to the present value of the cash flows. The first payment will be received at time zero. The cash flows are the perpetuity plus the payment that will be received immediately: PV=100+ 100 0. 04=£2,600 Question Nine When you purchased your car, you took out a five-year annual-payment loan with an interest rate of 6% per year (compounded annually). The annual payment on the car is $5,000. You have just made a payment and have now decided to pay the loan off by repaying the outstanding balance. What is the payment amount if:, [14]Source: Tutorial 1 Solutions (1).docxb) What is the value of the bond immediately before a payment is made? The timeline for this investment is: 100 2 3 100 FINM1001: Foundations of Finance a)The value of the bond is equal to the present value of the cash flows. By the perpetuity formula, which assumes the first payment is at period 1, the value of the bond is: PV = 100 0. 04 = £2,500 b)The value of the bond is equal to the present value of the cash flows. The first payment will be received at time zero. The cash flows are the perpetuity plus the payment that will be received immediately: PV=100+.
- (a) Value immediately after a payment:
Question 9:Paying Off an Existing Loan Early
- Car loan: 5-year loan at 6% p.a. (annual), annual payment $5,000. Amount to pay off after 1 year and after 4 years?
- Solutions:
- After 1 year (4 payments left): $$ PV = 5,000 \times \frac{1 - (1.06)^{-4}}{0.06} = 17,325.53 $$
- After 4 years (1 payment left): $$ PV = \frac{5,000}{(1.06)} = 4,716.98 $$
- Key point: The loan balance at any time equals the present value of remaining payments [18]Source: Tutorial 1 Solutions (1).docxFINM1001: Foundations of Finance PV= 5000 (1. 06 =$4,716. 98 Evaluate: To pay off the loan after owning the vehicle for one year will require $17,325. 53. To pay off the loan after owning the vehicle for four years will require $4,716. 98. FINM7006: Applied Foundations of Finance Tutorial 1 Solutions Question One Calculate the future value of $500 invested today for a period of 4 years at an interest rate of 10% p. a. compounded annually. Show how and discuss why your answer would change if interest was compounded daily. The future value of this amount given the interest rate compounds annually is $732. 05, and is calculated as follows: FV =$500(1. 10)4 =$732. 05 If the interest rate was compounded daily, the future value of the investment would be greater given the increased impact of compounding. The future value of the investment with daily compounding is calculated as follows:, [5]Source: Tutorial 1 Solutions (1).docx100 0. 04=£2,600 Question Nine When you purchased your car, you took out a five-year annual-payment loan with an interest rate of 6% per year (compounded annually). The annual payment on the car is $5,000. You have just made a payment and have now decided to pay the loan off by repaying the outstanding balance. What is the payment amount if: a) You have owned the car for one year (so there are four years left on the loan)? b) You have owned the car for four years (so there is one year left on the loan)? The timeline for the loan cash flows at time 0 is as follows: Time: 0 1 Payment: 5000 2 5000 4.
Key Takeaways
- Frequent compounding increases future value and reduces the required present value deposit.
- Perpetuities, though infinite, only slightly out-value large, long annuities due to heavy discounting of far-future flows.
- For uneven cash flows, discount/compound each separately.
- Paying a loan off early involves calculating the PV of future repayments.
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