Monetary and Fiscal Policy Impact, Economic Growth, and Phillips Curve Overview

Overview of Monetary and Fiscal Policy Effects on Aggregate Supply and Demand

Expansionary Monetary Policy

  • Lower interest rates.

  • Increases gross investment.

  • Shifts the aggregate demand curve to the right.

  • Results:

    • Price level increases, leading to inflationary pressures.

    • Real output increases due to higher consumer spending and business investment.

    • Unemployment rate decreases (inverse relation with real GDP) as more jobs are created in response to increased demand.

Expansionary Fiscal Policy

  • Increase in government spending or consumption.

  • Also shifts aggregate demand curve to the right.

  • Results: Same as above due to both policies working together, further stimulating the economy.

  • Can lead to a temporary boost in economic activity and job creation as government projects increase demand for labor and materials.

Conflict between Policies:

  • Expansionary monetary policy leads to lower interest rates, which promotes borrowing and spending.

  • Expansionary fiscal policy increases national debt, leading to higher demand for loans and a possible increase in interest rates.

  • Thus, interest rates may be indeterminate when both policies are combined, influencing gross investment and potentially offsetting each other.

Opposite Directions:

  • Contractionary Monetary Policy + Expansionary Fiscal Policy:

    • Contractionary leads to higher interest rates, reducing gross investment (shifts aggregate demand left).

    • Expansionary increases government spending (shifts aggregate demand right).

    • Net effect on price level, real output, and unemployment is indeterminate, making it difficult to predict overall impact on the economy in such scenarios.

Long-Run Impact of Money Supply Increase

  • An increase in money supply decreases interest rates, enhancing investment and shifting aggregate demand right initially.

  • However, this leads to higher prices after adjustment due to increased wages and resource costs.

  • Result in the long-run:

    • No change in real output (returns to original level).

    • Increase in price level, meaning buyers have to spend more to acquire the same quantity of goods and services.

Monetary Equation of Exchange

  • Equation: MV=PYMV = PY

    • M = Money Supply.

    • V = Velocity of Money (how often money is spent).

    • P = Price Level.

    • Y = Real Output (Real GDP).

  • Implications:

    • Stable velocity and price levels mean an increase in output requires an increase in the money supply.

    • Changes in velocity can significantly affect the overall economy.

National Debt vs National Deficit

  • National Debt:

    • Total accumulation of past deficits plus surpluses (currently over $27 trillion).

    • Reflects governmental borrowing over time, affecting future fiscal policies.

  • Budget Deficit:

    • Occurs when government spending exceeds tax revenue (increasing national debt).

    • Can lead to funding shortfalls in public projects and social services.

  • Budget Surplus:

    • When tax revenues exceed spending (decreasing national debt).

    • Provides opportunities for debt reduction or increased public investment.

Crowding Out Effect

  • A budget deficit can lead to higher interest rates, reducing gross investment and thus capital formation, which negatively impacts economic growth.

  • Illustration in loanable funds market:

    • Leftward shift of supply curve (less supply of loanable funds).

    • Increased demand for loanable funds leads to higher interest rates, reducing investment in growth-oriented projects.

Economic Growth and Measurement

  • Economic Growth:

    • Increase in potential GDP or per capita GDP.

    • Indicates improved living standards and economic health.

  • Two factors influencing it:

    • Quantity of Resources: More labor, land, and capital available for production.

    • Quality of Resources: Improvements in technology, education, and skills that enhance productivity.

  • Measurements:

    • Productivity = Output / Labor Hours, provides insight into efficiency.

    • Impacting factors:

    • Specialization, capital per worker, human capital play crucial roles.

AS-AD Model and Economic Growth

  • Economic growth seen in AS-AD model—rightward shift of long-run aggregate supply curve indicates increased production capabilities.

  • Production possibilities curve shift indicates enhanced efficiency through innovation and resource management.

  • Policies to encourage growth include:

    • Government-funded research, tax credits for capital formation, job training programs, supply-side policies that incentivize production capacity.

Phillips Curve

  • Relationship between inflation rate and unemployment rate.

  • Short-run: Inverse relationship (downward sloping curve), suggests trade-offs between inflation and unemployment.

  • Long-run: Vertical line at natural rate of unemployment indicating no trade-off exists at full employment levels.

  • Equilibrium at the intersection of both curves indicates expected inflation rate.

  • Shifts in the AS-AD model reflect mirrored movements in the Phillips curve (right = left, left = right).

  • Long-run Phillips curve shifts with changes in structural or frictional unemployment rates, reflecting underlying economic conditions.