Fiscal Policy and Its Impact on Economic Growth and Stability

Fiscal Policy and Economic Growth

Introduction to Fiscal Policy

Fiscal policy is a central tool in macroeconomics, used by governments to influence the overall economy through changes in spending and taxation. It plays a critical role in stabilizing the business cycle, promoting economic growth, and achieving macroeconomic objectives such as full employment and price stability.

• Fiscal policy refers to changes in federal government purchases, transfer payments, and taxes intended to achieve macroeconomic policy objectives.

• Some government spending and taxes automatically adjust with the business cycle—these are called automatic stabilizers (e.g., unemployment insurance payments rise during recessions).

• Discretionary fiscal policy involves intentional actions by the government to change spending or taxes.

Federal Government Expenditures and Revenues

Trends in Government Spending

• Historically, the federal government’s share of total government expenditures increased significantly after the Great Depression and World War II.

• Currently, federal expenditures are over 30% of GDP, but a smaller proportion is spent on direct purchases of goods and services (mainly military spending).

Composition of Expenditures and Revenues (2022)

• Purchases: Defense, salaries of federal employees, national parks, scientific research.

• Transfer payments: Social Security, Medicare, unemployment insurance (about half of expenditures).

• Grants to state/local governments and interest on federal debt make up the rest.

• Revenues come mainly from individual income taxes and payroll taxes, with smaller shares from corporate income taxes, excise taxes, tariffs, and other fees.

Social Security and Medicare: Long-Term Challenges

Fiscal Sustainability Concerns

• Social Security and Medicare have reduced poverty among the elderly and improved health for the poor.

• However, an aging population and rising healthcare costs threaten the sustainability of these programs.

• Projected budget shortfall through 2092: nearly $16.8 trillion (present value).

• Potential solutions include increasing taxes, decreasing benefits, raising eligibility ages, and reducing medical costs.

The Effects of Fiscal Policy on Real GDP and the Price Level

Mechanisms of Fiscal Policy

• Fiscal policy is implemented through changes in government purchases and taxes.

• Government purchases directly affect aggregate demand.

• Tax changes affect aggregate demand indirectly by changing disposable income and thus consumption.

Expansionary vs. Contractionary Fiscal Policy

• Expansionary fiscal policy: Increasing government purchases or decreasing taxes to boost aggregate demand, used when real GDP is below potential GDP (to reduce unemployment).

• Contractionary fiscal policy: Decreasing government purchases or increasing taxes to reduce aggregate demand, used when real GDP is above potential GDP (to reduce inflation).

Aggregate Demand and Supply Shocks

• Events like the Covid-19 pandemic can cause both aggregate supply and demand shocks, requiring large-scale fiscal responses.

• Expansionary fiscal policy can help restore real GDP to its potential but may result in higher inflation.

Countercyclical Fiscal Policy

Countercyclical fiscal policy aims to offset fluctuations in the business cycle.

Problem	Type of Policy Required	Actions by Congress and the President	Result
Recession	Expansionary	Increase government purchases or cut taxes	Real GDP and price level rise
Rising inflation	Contractionary	Decrease government purchases or raise taxes	Real GDP and price level fall

Additional info: These effects assume other factors, such as monetary policy, remain constant (ceteris paribus).

Dynamic Aggregate Demand and Aggregate Supply Model

• Traditional models assume constant potential GDP and price level (static).

• Dynamic models account for changes in potential GDP and price level over time, providing a more realistic framework for fiscal policy analysis.

Expansionary and Contractionary Policy in the Dynamic Model

• Expansionary policy increases aggregate demand, raising both real GDP and the price level compared to what would have occurred otherwise.

• Contractionary policy decreases aggregate demand, ideally returning the economy to full employment and reducing inflationary pressures.

The Multiplier Effect

Government Purchases, Tax, and Transfer Payments Multipliers

• Autonomous increase in aggregate demand: Direct result of increased government spending.

• Induced increase in aggregate demand: Result of increased income leading to higher consumption.

• Multiplier effect: The process by which a change in autonomous expenditure leads to a larger change in real GDP.

Formulas:

• Government purchases multiplier: $\text{Government purchases multiplier} = \frac{\text{Change in equilibrium real GDP}}{\text{Change in government purchases}}$

• Tax multiplier: $\text{Tax multiplier} = \frac{\text{Change in equilibrium real GDP}}{\text{Change in taxes}}$

• Transfer payments multiplier: $\text{Transfer payments multiplier} = \frac{\text{Change in equilibrium real GDP}}{\text{Change in transfer payments}}$

The tax multiplier is negative (an increase in taxes decreases GDP), and is smaller in absolute value than the government purchases multiplier because part of a tax cut is saved rather than spent.

Example Table: Multiplier Effect of an Increase in Government Purchases

Period	Additional Spending This Period	Cumulative Increase in Spending and Real GDP
1	$100 billion in government purchases	$100 billion
2	$50 billion in consumption spending	$150 billion
3	$25 billion in consumption spending	$175 billion
4	$12.5 billion in consumption spending	$187.5 billion
...	...	...
n	...	$200 billion

Transfer Payments Multiplier

• Transfer payments (e.g., stimulus checks) increase household disposable income, which increases consumption and has a positive multiplier effect.

Effect of Changes in the Tax Rate

• Tax multiplier applies to changes in the amount of taxes, not the tax rate.

• Decreases in tax rates increase disposable income and the size of the multiplier effect.

Multiplier Effect and Aggregate Supply

• An increase in aggregate demand raises both real GDP and the price level due to the upward-sloping short-run aggregate supply curve.

• The resulting increase in real GDP is smaller than the total increase in aggregate demand because some of the effect is absorbed by higher prices.

Limits to Fiscal Policy

• Timing issues: Legislative and implementation delays can reduce effectiveness.

• Crowding out: Increased government spending may reduce private investment, consumption, and net exports by raising interest rates.

Crowding Out in the Short Run

• Temporary increases in government purchases raise interest rates, reducing private spending and partially offsetting the initial stimulus.

Crowding Out in the Long Run

• In the long run, the increase in government purchases has no effect on real GDP; the economy returns to potential GDP, and the government sector becomes a larger share of the economy.

Recession of 2007–2009: Case Study

Duration	Decline in Real GDP	Peak Unemployment Rate
Average for postwar recessions	-1.7%	7.6%
Recession of 2007–2009	-4.0%	10.0%

• The 2007–2009 recession was the deepest since the Great Depression, with a much larger decline in GDP and higher unemployment.

• Recessions following financial crises are especially severe.

Fiscal Policy in Action: The Stimulus Package of 2009

• In 2008, Congress authorized a one-time tax rebate ($95 billion) to boost current incomes, resulting in a modest increase in spending.

• In 2009, the American Recovery and Reinvestment Act ($840 billion) was the largest fiscal policy action in U.S. history, with two-thirds in spending increases and the rest in tax cuts and credits.

• Economists debate the effectiveness of the stimulus; estimates from the Congressional Budget Office (CBO) are often used for objective analysis.

CBO Estimates of the Effects of the Stimulus Package

Year	Change in Real GDP (percentage change)	Change in Unemployment Rate (percentage points)	Change in Employment (millions of people)
2009	0.4 to 1.8	-0.1 to -0.5	0.3 to 1.3
2010	0.7 to 3.1	-0.4 to -1.1	0.9 to 3.7
2011	0.4 to 2.6	-0.2 to -1.4	0.6 to 3.6
2012	0.1 to 0.8	0.0 to -0.6	0.1 to 1.2
2013	0.0 to 0.3	0.0 to -0.2	0.0 to 0.3
2014	0.0 to 0.1	0.0 to 0.2	0.0 to 0.1

Conclusion: The stimulus package reduced the severity of the recession but did not fully restore the economy to full employment.

Estimates of the Sizes of Government Purchases and Tax Multipliers

Economists Making the Estimate	Type of Multiplier	Size of Multiplier
Congressional Budget Office	Government purchases	0.5–2.5
Valerie Ramey, UC San Diego	Military expenditure	0.6–1.1
Christina Romer & David Romer, UC Berkeley	Tax	2–3
Congressional Budget Office	Tax	0.3–1.5 for 2-year cut (lower/middle income); 0.1–0.6 for 1-year cut (higher income)

Additional info: Estimates vary widely due to the complexity of isolating the effects of fiscal policy from other economic factors.

Deficits, Surpluses, and Federal Government Debt

• Budget deficit: Government expenditures exceed tax revenue.

• Budget surplus: Government expenditures are less than tax revenue.

• The U.S. federal government usually runs a deficit, especially during recessions and wartime.

• Automatic stabilizers (e.g., increased transfer payments during recessions) contribute to deficits but help limit the severity of downturns.

Federal Budget as an Automatic Stabilizer

• In 2009, the deficit was 9.3% of GDP; the CBO estimated that 7.6% would remain even if GDP were at potential, due to automatic stabilizers.

• Balancing the budget during recessions would require cutting spending or raising taxes, which could worsen the downturn.