25400 · Financial Literacy
Personal Financial Management
Week 3 builds the two personal financial statements — a personal balance sheet (Net Worth = Total Assets − Total Liabilities, with and without superannuation) and a personal income statement (gross income down to annual surplus) — and turns them into financial-health ratios such as the surplus (savings) rate, debt-to-income, debt-to-asset, emergency-fund coverage and liquid-asset ratio. It reads these against rule-of-thumb benchmarks and connects the education/income premium and business-cycle resilience to planning. The ratio panel is a classic multi-part quiz item.
What this chapter covers
- 01Personal balance sheet: Net Worth (incl. super) = Total Assets − Total Liabilities; excl. super subtracts superannuation too
- 02Personal income statement: Gross → Taxable → Disposable → Annual Surplus
- 03Surplus (savings) rate = Annual Surplus / Disposable Income (benchmark 15-20%)
- 04Debt-to-income = Total Liabilities / Disposable Income (benchmark ~36-43%)
- 05Debt-to-asset = Total Liabilities / Total Assets (lower = less leverage)
- 06Emergency-fund coverage (months) = Emergency Fund / (Total Expenses / 12) (benchmark 3-6)
- 07Accessible-asset ratio and liquid-asset ratio as vital signs of flexibility
- 08The education premium, business-cycle resilience and financial independence
Diagnosing a household with a financial-health ratio panel
- +1Annual surplus first: Disposable − Expenses = 78,000 − 71,760 = $6,240. Surplus (savings) rate = Annual Surplus / Disposable Income = 6,240 / 78,000 = 8.0% — below the 15-20% target.
- +1Debt-to-income = Total Liabilities / Disposable Income = 310,000 / 78,000 = 397.4% — far above the ~36-43% benchmark, driven by mortgage-scale debt.
- +1Debt-to-asset = Total Liabilities / Total Assets = 310,000 / 420,000 = 73.8% — highly leveraged; lower is safer.
- +1Emergency-fund coverage = Emergency Fund / (Total Expenses / 12) = 6,000 / (71,760 / 12) = 6,000 / 5,980 = 1.0 month — well short of the 3-6 month target.
- +1Liquid-asset ratio = Total Liquid Assets / Total Assets = 18,000 / 420,000 = 4.3%. Verdict: solvent (positive net worth of $110,000) but thin on savings and liquidity and heavily indebted — priorities are building the emergency fund and lifting the savings rate.
Key terms
- Net worth
- Total Assets − Total Liabilities. The subject computes it both including superannuation and excluding it (subtracting super), because super is a large but largely inaccessible asset. Positive net worth means assets exceed debts.
- Annual surplus
- Disposable Income − Total Expenses: what is left to save or invest after tax and spending. It is the numerator of the surplus (savings) rate and the engine of wealth-building over time.
- Surplus (savings) rate
- Annual Surplus / Disposable Income, expressed as a percentage. It measures how much of after-tax income is retained; a common rule of thumb targets 15-20%.
- Debt-to-income ratio
- Total Liabilities / Disposable Income. A leverage vital sign; benchmarks around 36-43% are often cited, though mortgage-heavy households can read far higher.
- Emergency-fund coverage
- Emergency Fund / (Total Expenses / 12), giving the number of months of spending that liquid savings could cover. A 3-6 month buffer is the usual target for resilience through job loss or shocks.
- Liquid-asset ratio
- Total Liquid Assets / Total Assets. It shows what share of wealth is readily accessible (cash and near-cash) rather than locked in property or superannuation; low values signal illiquidity.
Personal Financial Management FAQ
Why compute net worth both with and without super?
Superannuation is usually a household's second-largest asset but is generally inaccessible until preservation age. Including it shows total wealth; excluding it shows the wealth you could actually draw on now. Seeing both prevents a false sense of liquidity.
Which denominator goes with which ratio?
It varies deliberately: the surplus rate and debt-to-income divide by disposable income, debt-to-asset and the liquid/accessible-asset ratios divide by total assets, and emergency-fund coverage divides by monthly expenses (annual expenses / 12). Getting the denominator right is where most marks are won or lost.
Are the benchmark thresholds exact rules?
No — they are rules of thumb (for example 15-20% savings, 3-6 months of emergency fund, ~36-43% debt-to-income). Use them to give a direction ('above/below target') rather than a pass/fail. The interpretation, not the exact cut-off, is what earns the verdict mark.
How is this assessed?
As a multi-part calculation-and-diagnosis item: build or read the two statements, compute several ratios, then diagnose against benchmarks with a short recommendation. It is exactly the kind of structured question that suits Quiz 1's timed format.
Assessment move
Set the two statements up cleanly first — the balance sheet gives assets, liabilities and net worth; the income statement gives gross, taxable, disposable and surplus — then read every ratio off those totals. Memorise which denominator each ratio uses by grouping them: disposable-income ratios (surplus rate, debt-to-income), total-asset ratios (debt-to-asset, liquid and accessible), and the monthly-expense ratio (emergency-fund coverage). Always finish with a one-line verdict against the benchmark, because interpretation carries marks. Rehearse the panel with a fresh household so the sequence is automatic under time pressure, and ask Sia to invent a new balance sheet and income statement and check each ratio and verdict.
Working through Personal Financial Management in 25400? Sia is AskSia’s AI Business and Economics tutor — ask any 25400 Personal Financial Management question and get a clear, step-by-step explanation grounded in how 25400 is taught and assessed. Read this chapter free, then take your hardest questions to Sia.
