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Understanding Interest Rates and Monetary Policy

May 9, 2025

Lecture Notes: Interest Rates and Monetary Policy

Introduction

  • Discussion on the current debate about the interest rates in the US.
  • The aggressive monetary policy to combat inflation through interest rates.
  • Objective: Understand how central banks determine interest rates.
  • Overview of financial markets' complexity.

Key Figures in Monetary Policy

  • Jerome Powell: Chair of the Federal Reserve.
  • Katsuya: Next president of the Bank of Japan.
  • Notable alumni from the speaker’s program: Ben Bernanke, Mario Draghi, Stan Fisher.

Institutional Knowledge: Federal Reserve System

  • The Federal Reserve is the Central Bank of the US.
  • Composed of the Board of Governors and 12 Regional Banks.
  • Federal Open Market Committee (FOMC) consists of 7 Governors + rotating 4 regional bank presidents.
  • Importance of the Federal Reserve Bank of New York.

Importance of Monetary Policy

  • A key policy tool in the short run alongside fiscal policy.
  • Monetary policy is nimble compared to fiscal policy, which is less reactive.
  • Monetary policy can affect output and price levels in the short run.

Financial Markets and Monetary Policy

  • Central banks influence financial markets by affecting interest rates.
  • Financial markets simplify to two instruments: money and bonds.
  • Money: No return, high liquidity.
  • Bonds: Offer returns, not useful for transactions.

The Tradeoff Between Money and Bonds

  • Decision based on need for transactions vs. interest rates.
  • Higher interest rates encourage holding bonds.

Money Demand and Equilibrium

  • Money demand decreases with higher interest rates.
  • Nominal income affects money demand.
  • Interest rates determined by the equilibrium of money supply and money demand.

Expansionary and Contractionary Monetary Policy

  • Expansionary: Increase in money supply, leads to lower interest rates.
  • Contractionary: Decrease in money supply, leads to higher interest rates.

Modern Monetary Policy

  • Central banks target interest rates, not money supply.
  • Money demand is volatile; setting interest rates provides stability.

Open Market Operations

  • Central banks buy/sell bonds to adjust money supply.
  • Expansionary operations: Central bank buys bonds, increasing money in circulation.

Interest Rate and Bond Price Relationship

  • Inverse relationship: Higher bond prices lead to lower interest rates and vice versa.

Advanced Concepts in Monetary Policy

  • Introduction of financial intermediaries, primarily banks.
  • Banks create money through deposits and hold reserves at the central bank.
  • Federal Funds Rate: The interest rate for reserves set by the Federal Reserve.
  • Modern central bank operations focus on controlling the federal funds rate.

Historical Context and Conclusion

  • Overview of the federal funds rate trends before and after COVID-19.
  • The importance of maintaining appropriate interest rates to manage inflation.

Conclusion

  • Understanding the mechanism of monetary policy and interest rates is crucial for interpreting financial market behavior and economic strategies.