ECON5002 Macroeconomic Theory
The Complete Exam Bible · S2 2026ECON5002 Overview
- University of Sydney
- S2 2026
- 9 chapters
- Economics
ECON5002 Macroeconomic Theory is a postgraduate coursework unit in the University of Sydney School of Economics that develops a complete model-by-model account of how a modern economy determines output, employment, inflation, interest rates and the exchange rate.
- Assessed by In-Semester (Mid-Semester) Test 30% · Online Quizzes (x4) 20% · Final Exam 50%
- Key terms Injections = leakages (J = L), Expenditure multiplier, Balanced-budget multiplier, Endogenous money
- How to prepare Treat ECON5002 as one connected toolkit, not nine isolated topics, and split your revision along the exam's own fault line: Topics 1-3 are tested…
- Most asked Is there a final exam?
How ECON5002 is assessed
| Component | Weight | Format |
|---|---|---|
| In-Semester (Mid-Semester) Test | 30% | 60 min supervised closed-book: Section I 15 MCQ (15%) + Section II one two-part essay marked /20 (15%); covers Topics 1-3 |
| Online Quizzes (x4) | 20% | Four Canvas quizzes at 5% each; 15 MCQ in 60 min, one attempt, open one week (Q1 T1-2, Q2 T3-4, Q3 T5-6, Q4 T7-8) |
| Final Exam | 50% | 2 hr + 10 min reading, supervised closed-book: Section A 20 MCQ (20%) + Section B two essays from four /20 each (30%); covers Topics 4-8 |
What ECON5002 covers
ECON5002 builds one connected macro toolkit across nine chapters — from the circular flow and the Keynesian multiplier, through the financial system, IS-LM and AS-AD, to the Phillips curve, Solow-Swan growth, consumption-investment theory and the open economy.
National Accounting and the Circular Flow
Circular flow of income · four-sector economy · injections & leakages · national accounting identities · expenditure/income/value-added approachesThis opening topic is the accounting skeleton of ECON5002: it shows that a national economy's output is a single flow that can be measured three equivalent ways — by expenditure, by income, and by production (value added) — all giving the same number by construction.
- Circular flow of income — output = expenditure = income measured as one closed loop
- Four-sector economy — households, firms, government and rest-of-world linked by factor, goods and financial markets
- Injections vs leakages — I, G, X add to the flow; S, T, M drain it
- The J = L identity — equilibrium requires I + G + X = S + T + M
- Sectoral balances — rearranged as (I − S) = (T − G) + (M − X)
- Three approaches to GDP — expenditure, income and production must reconcile
The Keynesian Income-Expenditure Model and Fiscal Policy
Macroeconomic equilibrium · consumption & saving functions · the multiplier · fiscal policy · open-economy & trade-balance constraintThis is the engine room of short-run macro in ECON5002.
- Macroeconomic equilibrium — the output level where planned injections equal planned leakages (I + G + X = S + T + M)
- Quantity adjustment — sticky prices mean unplanned inventories, not prices, clear the goods market
- Consumption & saving functions — C = a + c(Y − T), with MPC c and MPS s = 1 − c
- The Keynesian cross — Y* where the aggregate-expenditure schedule crosses the 45° line
- The expenditure multiplier — k = 1/(1 − c): an autonomous impulse raises income by a multiple
- Fiscal multipliers — spending multiplier 1/(1−c) vs the smaller, negative tax multiplier −c/(1−c)
The Financial System and Monetary Policy
RBA & APRA · financial intermediaries · credit creation · reserve ratio & money multiplier · money demand · monetary policy transmissionThis chapter explains how the Australian financial system channels saving into investment and how money and credit are actually created, priced and steered.
- The Australian financial system — RBA at the apex, APRA (prudential) and ASIC (conduct), commercial banks and NBFIs across the payments system
- Central-bank functions — monetary policy, lender of last resort, liquidity management, banker to government, system stability
- Financial intermediation — maturity transformation (borrow short, lend long), risk pooling, expert allocation, and the spread that pays for them
- Endogenous vs exogenous money — the signature claim that the RBA sets the cash rate and accommodates the quantity, not the other way around
- Credit creation & the money multiplier — ΔD = ΔL/(1−rr), the multiplier 1/rr, and why the Quantity Theory breaks down here
- The demand for money — transactions/precautionary balances L₁(YP) plus asset/speculative balances L₂(i)
The IS-LM Model and Macroeconomic Policy
IS curve · LM curve · joint equilibrium · fiscal vs monetary policy · crowding out · policy effectivenessThe IS-LM model welds the goods market and the money market into one diagram in output-interest-rate (Y, i) space: the IS schedule is every pair where the goods market clears (AD = Y, i.e. injections = leakages), the LM schedule is every pair where the money market clears, and their intersection is the one (Y*, i*) where both clear at once.
- The IS schedule — pairs (Y, i) where the goods market clears (AD = Y, injections = leakages); downward-sloping because a lower i lifts interest-sensitive spending A(i)
- The LM schedule — pairs (Y, i) where the money market clears; in this course horizontal at the policy-set rate because money is endogenous
- Interest-sensitive autonomous demand A(i) — A = Ā + A(i), the channel through which the interest rate reaches output
- The open-economy multiplier k = 1/(1 − c + ct + m) — the proportional tax ct and import leakage m both shrink it
- Joint goods-money equilibrium (Y*, i*) — monetary policy pins i*, the real sector then delivers Y* where IS crosses the flat LM
- Fiscal vs monetary policy — fiscal shifts IS horizontally (full kΔĀ effect), monetary shifts the flat LM vertically
The Aggregate Supply-Aggregate Demand Model
Aggregate demand curve · short- & long-run aggregate supply · price flexibility · demand & supply shocks · self-correction debateThe AD-AS model is the single diagram that ties the whole economy together: a downward aggregate demand curve and an upward short-run aggregate supply curve fix the price level and real output, while a vertical long-run aggregate supply at natural output Yₙ pins down where the economy must settle once wages and prices adjust.
- The AD-AS frame — price level P on the vertical axis, real output Y on the horizontal
- Why AD slopes down — the monetary-policy reaction effect (dominant), wealth effect (weak), international-competitiveness effect
- The interest-rate rule i = iₙ + a(P − Pᵀ) and why the Keynes effect is switched off under endogenous money
- What shifts AD — fiscal, monetary-rule changes, autonomous spending and exchange-rate shocks
- Short-run AS from the price-cost mark-up and diminishing returns to variable inputs
- Long-run AS vertical at natural output Yₙ, the natural rate of unemployment, and money neutrality
Inflation, Unemployment and the Phillips Curve
Original Phillips curve · expectations-augmented curve · NAIRU & natural rate · adaptive vs rational expectations · disinflation & sacrifice ratioThis chapter explains the apparent trade-off between inflation and unemployment — why the original Phillips curve looked like a stable policy menu in the 1960s, and why stagflation destroyed that reading in the 1970s.
- Original Phillips curve — a stable inverse relation between inflation and unemployment, read (wrongly) as a 1960s policy menu
- The 1970s breakdown — stagflation: rising inflation with rising unemployment kills the stable-trade-off story
- Demand-pull inflation — excess aggregate demand (AD > Yₙ) bids prices up; responds to restrictive policy
- Cost-push inflation — exogenous cost shocks (wages above productivity, oil, depreciation, GST) shift supply up; tight policy mostly raises unemployment
- Expectations-augmented Phillips curve — π = πᵉ − β(u − uₙ); each short-run curve is drawn for a given expected inflation
- NAIRU / natural rate — the long-run Phillips curve is vertical at uₙ; no permanent inflation-unemployment trade-off
Economic Growth: The Solow-Swan Model
Production function & capital accumulation · steady state s·f(k)=(d+n)k · saving-rate effects · golden rule (MPK=d+n) · technology & convergenceThe Solow-Swan model (Smith's lectures use the Australian label Swan-Solow, after Trevor Swan) explains long-run living standards from one mechanism: capital per worker rises only while saving per worker s·f(k) beats the break-even investment (n + d)k needed to replace depreciation and equip a growing workforce.
- Supply-led growth — output sits at full employment on the trend path; AD adjusts, factor prices flex (contrast Smith's demand-led super-multiplier alternative)
- Intensive production function — y = A·f(k) in per-worker terms, concave with diminishing returns to capital per worker (f′ > 0, f″ < 0)
- Break-even investment (n + d)k — the investment per worker needed just to hold k constant against depreciation d and population growth n
- Fundamental Swan-Solow equation — Δk = s·A·f(k) − (n + d)k; the steady state is the saving / break-even cross where Δk = 0
- Steady-state growth — k and y per worker are constant, but aggregates Y, K, N all grow at n; per-capita growth is zero without technology
- Saving-rate result — a higher s raises the LEVEL of k* and y* (plus a transitional spurt) but NOT the long-run per-capita growth rate
Consumption and Investment
Keynesian consumption · permanent-income & life-cycle hypotheses · investment theory · user cost of capital · accelerator · Tobin's qThis topic opens the black box behind the two largest moving parts of aggregate demand.
- Why the simple Keynesian consumption function fails — a near-constant long-run APC and consumption smoother than income
- Permanent-income hypothesis — C = k·Yᴾ, with income split into permanent Yᴾ and transitory Yᵀ
- Short-run vs long-run MPC — the transitory MPC (k·j) is far below the long-run MPC (k)
- Life-cycle hypothesis — flat consumption from lifetime wealth; the young borrow, the middle-aged save, the retired dissave
- Relative-income (Duesenberry) — consumption is social and irreversible, so the MPC rises in downturns
- The accelerator — net investment = v*·ΔYᵉ, simple vs flexible, and why investment is so volatile
Open Economy Macroeconomics
Balance of payments · exchange-rate determination · Mundell-Fleming · fixed vs flexible rates · capital mobility · policy under open economyThis chapter re-opens the economy to trade and capital flows, adding two things the closed models leave out: net exports in aggregate demand and a second asset market — foreign currency — whose price is the exchange rate.
- Three dimensions of openness — goods/services, financial, and factor markets; Australia as a small, commodity-export-sensitive economy with a floating dollar
- Balance of payments — current account (trade balance + net income + transfers) vs capital/financial account; CA + KA = 0
- Current-account deficit ⇔ capital-account surplus — a deficit nation is a net seller of assets, funded by foreign capital inflow
- Nominal vs real exchange rate — ε = E·P/P* measures competitiveness; bilateral vs the trade-weighted (effective) index
- Open-economy multiplier — k = 1/(1 − c + ct + m); the import leakage m makes it smaller than the closed multiplier, and a boom worsens the trade balance
- Twin-deficit identity — (S − I) + (T − G) = NX links private saving-investment, the budget, and the external balance
It is deliberately a lecturer's course, not a textbook course: the lectures build the macro framework around interest-setting monetary policy and endogenous money (a horizontal LM, zero crowding-out below full employment, the RBA setting the cash rate), so where the lectures diverge from the Gordon text, the exam rewards the lecture version.
Assessment is built on a mid-semester test (Topics 1-3), four online quizzes, and a final exam (Topics 4-8), all closed-book.
The exam rewards two things in particular: getting the quantitative cores right under time pressure (the multiplier, credit creation, IS-LM algebra, the sacrifice ratio, Solow-Swan steady states, the accelerator and interest parity) and essay answers with correct, labelled diagrams drawn from memory that name the assumption driving each result.
Because the models build on each other, the students who do best treat the whole unit as one toolkit rather than nine separate topics.
Worked example · free
Solow-Swan steady state and the golden rule
- +2Steady-state condition: saving per worker equals break-even investment, s·f(k*) = (d + n)·k*. Substitute: 0.3·k*^0.5 = (0.04 + 0.06)·k* = 0.10·k*.
- +2Divide both sides by k*^0.5: 0.3 = 0.10·k*^0.5, so k*^0.5 = 3 and k* = 9.
- +2Output per worker y* = √9 = 3; consumption per worker c* = (1 − s)·y* = 0.7 × 3 = 2.1.
- +2Golden rule sets MPK = d + n. With y = k^0.5, MPK = 0.5·k^(−0.5) = 0.10, so k^0.5 = 0.5/0.10 = 5 and k_gold = 25.
- +1Since k* = 9 < k_gold = 25, the economy holds less capital than the golden rule, so it under-saves; a higher saving rate would raise steady-state consumption per worker.
Key terms
- Injections = leakages (J = L)
- The four-sector equilibrium condition I + G + X = S + T + M; saving, net taxes and imports leak from the spending stream while investment, government spending and exports inject back in.
- Expenditure multiplier
- The factor 1/(1 − c + ct + m) by which an autonomous spending change raises equilibrium income; each extra leakage (proportional tax t, marginal propensity to import m) shrinks it.
- Balanced-budget multiplier
- Equal to 1 in the simple lump-sum model: a matched rise in G and T raises income by exactly ΔG, because spending adds the full amount while the tax cuts demand only by the MPC fraction.
- Endogenous money
- Smith's signature framing: the RBA sets the short-term interest rate and the quantity of money adjusts to demand, so the money stock is demand-determined rather than a fixed policy lever.
- Horizontal LM
- Under interest-setting policy and endogenous money the LM schedule is horizontal at the policy-set rate; a change in policy is a vertical shift, not a movement along an upward-sloping LM.
- Crowding out
- The displacement of private spending by fiscal expansion. In this course it is zero below full employment, because the RBA holds the cash rate and credit is supplied at that rate; it appears only once income is pushed beyond natural output.
- Natural rate of unemployment (NAIRU)
- The frictional-plus-structural unemployment rate at which inflation is stable; the long-run Phillips curve is vertical at this rate, so there is no permanent inflation-unemployment trade-off.
- Expectations-augmented Phillips curve
- Friedman's relation linking the change in inflation to the gap between unemployment and the natural rate; with adaptive expectations a short-run trade-off exists but vanishes in the long run.
- Sacrifice ratio
- The cumulative excess-unemployment point-years (or lost output) needed per one-percentage-point reduction in inflation; larger under adaptive expectations, near zero under credible rational expectations.
- Golden rule (Solow-Swan)
- The saving rate that maximises steady-state consumption per worker, where the marginal product of capital equals d + n (depreciation plus population growth).
- Permanent-income hypothesis
- Friedman's theory that consumption tracks expected long-run (permanent) income, so the marginal propensity to consume out of transitory income is near zero — implying temporary tax changes have weak effects.
- Uncovered interest parity / Mundell-Fleming
- Arbitrage equalises expected returns across currencies, so a higher domestic rate implies expected depreciation; in the open-economy IS-LM this makes monetary policy strong under flexible rates and impotent under fixed rates (the policy trilemma).
ECON5002 FAQ
How is ECON5002 assessed?
Three components: a 30% mid-semester test covering Topics 1-3 (15 MCQ plus one two-part essay), four 5% online Canvas quizzes (20% total), and a 50% final exam covering Topics 4-8 (20 MCQ plus two essays chosen from four). All are closed-book.
Is there a final exam?
Yes. The final is worth 50%, runs for 2 hours plus 10 minutes reading time, is supervised and closed-book, and covers Topics 4-8 only (AS-AD, the Phillips curve, Solow-Swan growth, consumption and investment, and the open economy). Topics 1-3 are tested only in the mid-semester test.
What is the hardest part of the course?
Two things trip students up: this is a lecturer's course, so the exam expects Smith's interest-setting / endogenous-money version (horizontal LM, zero crowding-out) rather than the textbook, and every essay expects correct, labelled diagrams drawn from memory under time pressure. The level-versus-growth distinction in Solow-Swan and the policy-effectiveness flip across exchange-rate regimes are classic discriminators.
How should I prepare?
Make every model exam-drawable from memory and rehearse the quantitative cores (multiplier, credit creation, IS-LM algebra, sacrifice ratio, Solow-Swan steady state, accelerator, interest parity) under timed conditions. For essays, practise naming the assumption behind each result, since that is where the marks sit in this course.
Do I need the textbook?
Gordon's Macroeconomics is the prescribed text and useful background, but the unit is explicitly a lecturer's course — the lecture notation and emphasis diverge from Gordon, and where they clash the exam rewards the lecture version. Treat the lectures and tutorials as the primary source.
Is this guide official or affiliated with the University of Sydney?
No. This is an independent AskSia study resource created to help students revise. It is not produced, endorsed by, or affiliated with the University of Sydney. Always check Canvas and the official unit outline for current dates, weights and rules.
Can I use a calculator or notes in the exams?
Both exams are closed-book and supervised. The only materials permitted are a pen, pencil and a bilingual or foreign-language dictionary, so all formulae and diagrams must be memorised.
Questions students ask in each ECON5002 chapter
- Why must the three approaches to GDP give the same answer?
- Because expenditure, income and value added are three views of one flow. Whatever is produced is either sold (expenditure) or held as inventory investment, and every dollar of sales becomes income to some factor of production. The equality is true by construction, not by assumption; any measured gap is reported as a statistical discrepancy, never fudged away. Chapter 01 · National Accounting and the Circular Flow
- What is macroeconomic equilibrium in this model?
- It is the single output level at which spending plans are mutually consistent — where planned injections equal planned leakages (I + G + X = S + T + M), or in the simplest closed economy planned saving equals planned investment. It is a centre of gravity the economy converges toward through changes in output, not a state it literally sits in, and it is distinct from the accounting identity that actual S always equals actual I. Chapter 02 · The Keynesian Income-Expenditure Model and Fiscal Policy
- Why does this course insist money is endogenous?
- Because it models a deregulated economy where the RBA implements policy by setting the cash rate, not by fixing a money quantity. Banks lend first and the RBA supplies the reserves the system needs at that rate, so causation runs loans → deposits → reserves and the money stock is demand-determined. Chapter 03 · The Financial System and Monetary Policy
- Why is the LM horizontal in ECON5002?
- Because this is a lecturer's course built on interest-setting policy and endogenous money. The RBA sets the cash rate and the quantity of money adjusts to whatever is demanded at that rate, so the rate does not have to rise as output grows — the LM is flat at the policy-set rate. Drawing the textbook upward-sloping LM (which assumes a fixed money stock) and concluding that fiscal policy raises the rate is the classic wrong answer here. Chapter 04 · The IS-LM Model and Macroeconomic Policy
- Why does the AD curve slope downward in ECON5002?
- Mainly because of the monetary-policy reaction effect: when the price level rises above target, the central bank raises the interest rate (i = iₙ + a(P − Pᵀ)), which cuts interest-sensitive consumption and investment and lowers output. The international-competitiveness effect reinforces this, while the wealth (Pigou) effect is weak. Crucially, the textbook real-balance/Keynes effect is switched off here because money is endogenous. Chapter 05 · The Aggregate Supply-Aggregate Demand Model
- Is the Phillips curve on the ECON5002 exam?
- Yes — it is Topic 5, examined only in the 50% closed-book final (which covers Topics 4–8), not the mid-semester test. A Section-B essay typically asks for a labelled short-run and long-run Phillips diagram plus either a demand-pull/cost-push discussion or a sacrifice-ratio or Fisher computation. Chapter 06 · Inflation, Unemployment and the Phillips Curve
- Why doesn't a higher saving rate raise long-run growth in Swan-Solow?
- A higher saving rate lifts the saving curve, so capital deepens to a higher steady state and there is a temporary growth spurt during the transition. But diminishing returns to capital shrink the gap between saving and break-even investment until they are equal again, at which point per-capita growth returns to zero. So a higher saving rate is a level effect, not a permanent growth effect — the basis of the IMF-savings critique. Chapter 07 · Economic Growth: The Solow-Swan Model
- What is the difference between the permanent-income and life-cycle hypotheses?
- Both say households smooth consumption rather than spend out of current income, so they reach the same broad conclusion. The difference is the horizon and the measure of resources: the permanent-income hypothesis (Friedman) makes consumption a constant fraction of a statistical permanent income, while the life-cycle hypothesis (Modigliani) makes it depend on lifetime resources — accumulated wealth plus expected labour income — spread evenly over the years a household expects to live. The life-cycle version adds an explicit borrow-save-dissave pattern over the life span and a demographic corollary: an ageing population lowers the aggregate saving ratio. Chapter 08 · Consumption and Investment
- Is open-economy macroeconomics on the ECON5002 exam?
- Yes — it is Topic 8, examined only in the 50% closed-book final, which covers Topics 4–8 (not the mid-semester test). Expect a quantitative item on the open multiplier and the twin-deficit identity, plus a Section-B essay on Mundell-Fleming and the exchange-rate regime, where a labelled diagram is rewarded. Chapter 09 · Open Economy Macroeconomics
How to study for the exam
Treat ECON5002 as one connected toolkit, not nine isolated topics, and split your revision along the exam's own fault line: Topics 1-3 are tested only in the closed-book mid-semester, Topics 4-8 only in the final.
For the quantitative cores — the multiplier, credit creation, IS-LM algebra, the sacrifice ratio, Solow-Swan steady states, the accelerator and interest parity — drill fresh numerical problems against the clock until the setup is automatic.
For the qualitative cores, build a one-page essay plan per model that leads with a correct, labelled diagram and explicitly names the assumption driving the result, because this is a lecturer's course and the marks reward Smith's interest-setting, endogenous-money framing over the textbook.
Finally, rehearse the high-value discriminators the exam keeps returning to: the balanced-budget multiplier equals one, the LM is horizontal so fiscal policy has no systematic effect on the interest rate, a higher saving rate changes the level but not the long-run growth rate, and policy effectiveness flips with the exchange-rate regime.
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