Expansionary Fiscal Policy vs Contractionary Fiscal Policy
Expansionary Fiscal Policy and Contractionary Fiscal Policy are two Fiscal Policy concepts in AP Economics that students often mix up. Expansionary fiscal policy is an increase in government spending or a cut in taxes used to boost aggregate demand in a recession. Contractionary fiscal policy is a decrease in government spending or an increase in taxes used to reduce aggregate demand and fight inflation. Here is how they compare side by side.
It shifts aggregate demand right, raising real GDP and lowering unemployment, often at the cost of higher prices and a larger budget deficit. It is most appropriate during a recessionary gap. Its impact can be weakened by crowding out and time lags.
It shifts aggregate demand left, lowering the price level and real GDP and moving the budget toward surplus. It is used to close an inflationary gap. Political resistance often makes spending cuts and tax increases hard to enact.
Expansionary vs Contractionary Fiscal Policy: Same Tools, Opposite Settings
| Expansionary Fiscal Policy | Contractionary Fiscal Policy | |
|---|---|---|
| Gap it targets | Recessionary gap, where real GDP sits below potential | Inflationary gap, where real GDP sits above potential |
| Levers, strongest first | Raise government purchases first, since a tax cut or a transfer increase leaks into saving before it reaches spending | Cut government purchases first, since a tax rise or a transfer cut also takes part of its bite out of saving |
| Effect on the budget | Widens a deficit or shrinks a surplus in the year it is used | Shrinks a deficit or widens a surplus in the year it is used |
| Loanable funds market | Government borrowing raises demand for loanable funds, so the real interest rate rises and private investment is crowded out | Less government borrowing lowers demand for loanable funds, so the real interest rate falls and private investment is crowded in |
| Short-run Phillips curve | Moves the economy up and to the left along the short-run curve, so unemployment falls and inflation rises | Moves it down and to the right along the same curve, so inflation falls and unemployment rises |
| Automatic version | Unemployment benefits and progressive taxes cushion falling income with no new law | Rising tax receipts in a boom drain spending power with no new law |
A dollar of spending and a dollar of taxes do not cancel out
With a marginal propensity to consume of 0.75, the spending multiplier is 1 divided by 0.25, which is 4, and the tax multiplier is negative 0.75 divided by 0.25, which is negative 3. Raise government purchases by $40 billion and raise taxes by the same $40 billion, and the package is not neutral. Aggregate demand rises by $160 billion and falls by $120 billion, a net increase of $40 billion, exactly the size of the package. That result is the balanced budget multiplier, and it comes out to 1 for any marginal propensity to consume, because the spending multiplier always exceeds the size of the tax multiplier by exactly one. The gap exists because the first dollar of a purchase is spent in full, while the first dollar of a tax change is partly absorbed by saving. So a budget that pairs an expansionary lever with a contractionary lever of equal size is still expansionary, and a budget that pairs a spending cut with a tax cut of equal size is still contractionary.
A shrinking deficit is not proof of contractionary policy
Fiscal policy is classified by deliberate changes in spending and tax rates, not by the budget balance that shows up at the end of the year. During a recovery, incomes rise, so income tax receipts climb and unemployment payments fall, and the deficit narrows with nobody voting for anything. Those automatic stabilizers move the budget against the cycle on their own. The reverse trap is just as common, since a deficit can widen during a downturn purely because the tax base shrank, which is not expansionary fiscal policy either. On a free-response question, name the discretionary action first and then trace it. Congress cuts income tax rates, disposable income rises, consumption rises, aggregate demand shifts right, the price level and real output both rise, and unemployment falls. A change in the budget balance with no policy decision behind it earns nothing.
Frequently asked questions
Which fiscal policy fights inflation?
Contractionary fiscal policy fights demand-pull inflation by cutting government purchases or raising taxes, which shifts aggregate demand left and lowers the price level. The cost is real. Output falls back toward potential and unemployment rises in the short run. Contractionary fiscal policy does not help against cost-push inflation from a negative supply shock, because shifting aggregate demand left in that case lowers the price level only by deepening the fall in output.
Can expansionary and contractionary fiscal policy happen at the same time?
Expansionary and contractionary fiscal policy often sit inside the same budget, because a budget holds many separate line items. Take a bill that raises government purchases by $20 billion while raising taxes by $50 billion, with a marginal propensity to consume of 0.75. The purchase increase adds $80 billion to aggregate demand and the tax increase subtracts $150 billion, so the package is contractionary on net by $70 billion. Classify a mixed package by the direction of that net change, and size each piece with its own multiplier, since a spending change moves aggregate demand more than a tax change of the same size.
Want the long version? Expansionary vs Contractionary Policy: Full Matrix walks through the same comparison as a full guide, with worked examples and the exam traps. This page is the quick side-by-side.
Live Fiscal Policy graph. Drag the curves, or open the full version.
Related comparisons
Get AP Econ exam tips in your inbox
Occasional emails with study tips, new interactive graphs, and exam-season reminders. Free, no spam.
No spam. Unsubscribe anytime. Read our privacy policy.
Keep track of what you have studied
A free EconLearn account adds progress tracking, your quiz history, and achievements. Studying here is free either way, and there is nothing to pay for as a student.
Create a free accountAlready have one? Sign in
Last updated