Memory tricks for fiscal and monetary policy

Q: Compare expansionary fiscal policy and monetary policy — mechanisms, timing, and effectiveness.

A: Expansionary fiscal policy increases government spending (G) or reduces taxes (T), shifting aggregate demand right and raising real GDP. The mechanism is direct: government spending immediately enters the economy, income rises, and consumption rises through the multiplier effect. Spending multiplier = 1 divided by (1 minus MPC). Fiscal policy has a long inside lag because legislation must pass through Congress (months to years) but a short outside lag because spending enters the economy quickly. It works poorly for short recessions because the policy may arrive too late. Expansionary monetary policy has the Fed buying bonds to raise bank reserves, lowering interest rates, which stimulates investment and consumption, shifting AD right. It has a short inside lag (FOMC meets 8 times per year) but a long outside lag (6 to 18 months for rate changes to fully affect the economy). In a liquidity trap near zero interest rates, further rate cuts cannot stimulate and fiscal policy becomes more effective. In normal times, monetary policy is preferred because it is faster, more flexible, and avoids the political process.

Q: Explain the money creation process and fractional reserve banking.

A: Fractional reserve banking means banks hold only a fraction of deposits as reserves and lend the rest, in the process creating money. With a 10 percent reserve requirement, a 1000 dollar deposit leads the bank to keep 100 dollars and lend 900. That 900 is deposited elsewhere, the next bank keeps 90 and lends 810, and the process continues until the total new money created equals 1000 times (1/0.10) = 10000 dollars. The simple money multiplier equals 1 divided by the reserve ratio. The real-world multiplier is smaller because people hold some currency rather than depositing everything, and banks hold excess reserves beyond the minimum required. Federal Reserve tools include open market operations (buying bonds raises bank reserves and lowers the federal funds rate), the discount rate (the rate the Fed charges banks for direct borrowing), interest on reserves (sets a floor on the fed funds rate), and forward guidance. Quantitative Easing — buying long-term Treasuries and mortgage-backed securities — is used when the federal funds rate is already at zero.

Q: What are the arguments for and against fiscal austerity during a recession?

A: Arguments for austerity: Ricardian equivalence — rational consumers anticipate future taxes from current deficits and save more now, offsetting the stimulus. Long-run debt sustainability — unsustainable deficits eventually cause higher interest rates and crowd out private investment. Confidence channel — deficit reduction restores business and investor confidence, potentially stimulating private investment. Arguments against austerity during a recession: the Keynesian multiplier means cutting spending reduces income and consumption, deepening the recession. IMF research has found that fiscal multipliers are much larger in recessions than in booms, meaning the damage from spending cuts is greater than expected. Austerity can be self-defeating — it reduces GDP, tax revenues fall, and the deficit may worsen despite the cuts. Historical evidence from Europe between 2010 and 2013 shows that countries pursuing aggressive austerity experienced deeper and longer recessions than the expansionary United States. The current near-consensus among economists: austerity is appropriate in booms to address structural deficits but is counterproductive in deep recessions with near-zero interest rates.

Q: Explain the Federal Reserve's tools and how it pursues the dual mandate.

A: The Federal Reserve has a dual mandate from Congress: price stability targeting 2 percent PCE inflation and maximum sustainable employment near the natural rate of unemployment. Primary tool: the federal funds rate target set by the FOMC which meets 8 times per year. The Fed achieves the target through open market operations — buying Treasury securities injects reserves into the banking system, increasing the supply of overnight funds and lowering the federal funds rate. Selling securities does the opposite. Interest on reserves (IOR) sets a floor on the federal funds rate because banks will not lend reserves to each other below what the Fed pays them. Forward guidance — communicating future policy intentions — influences long-term interest rates and economic expectations. Quantitative Easing buys long-term Treasuries and mortgage-backed securities when the federal funds rate hits the zero lower bound, targeting longer-term rates directly. The Taylor Rule provides a formula: the federal funds rate should equal 2 percent plus the current inflation rate plus 0.5 times the inflation gap plus 0.5 times the output gap.

Q: What is the Keynesian multiplier and what limits its effectiveness in practice?

A: The Keynesian spending multiplier equals 1 divided by (1 minus MPC), which also equals 1 divided by MPS. With an MPC of 0.8 the multiplier is 5, meaning 100 billion dollars of government spending increases total GDP by 500 billion dollars. The mechanism: government spending raises incomes, recipients spend the MPC fraction, their incomes rise, they spend again, and the chain continues converging to the multiplied total. The tax multiplier is MPC divided by (1 minus MPC) = 4, which is smaller because the first round partially leaks into saving. Practical limitations: crowding out (government borrowing raises interest rates, reducing private investment and partially offsetting the stimulus), Ricardian equivalence (consumers anticipate future taxes and save more today), import leakage (spending on imported goods has no domestic multiplier effect), time lags (the policy may arrive after the recession has ended), and uncertainty about the true MPC. Empirical evidence shows multipliers are larger in deep recessions with near-zero interest rates — where there is less crowding out and substantial idle capacity — and smaller in normal times.