Monetary Policy and the Market for the Interest Rate Determination

Chapter Learning Objectives and Primary Themes

• Explain Money Demand and Supply: Understand how these factors interact to determine the market interest rate.
• Outline Transmission Steps: Trace the path from an increase in money supply to an increase in equilibrium output.
• Analyze Velocity of Money: Describe the impact of assuming a fixed velocity on monetary policy decisions.
• Analyze Great Recession Policies: Explain the specific actions taken by the Federal Reserve (the Fed) during and immediately following the financial crisis of $2007\text{--}2009$.
• Analyze Covid-19 Policies: Detail the Fed's response to the pandemic and its aftermath.
• Shift from Fiscal to Monetary Policy: While Chapter 11 focused on taxes and government expenditure (fiscal policy), this chapter focuses on the active monetary policy approach.
• Evolving Reserve Frameworks: Note the transition from a banking system with limited reserves to one with ample reserves following the $2007\text{--}2009$ crisis.
• Core Objective: Despite tool changes, the Fed's primary objective remains targeting the federal funds rate ($FFR$), which influences other rates, consumption, investment, and ultimately real $GDP$, unemployment, and price levels.

The Fundamental Nature of Money: Stock vs. Flow

• Stock of Money: An amount of money measured at a specific point in time. For example, the cash currently in your pocket is a stock measure.
• Flow of Income: An amount measured per period of time. Income only has meaning if the time period (e.g., per hour, week, or month) is specified.
• The Demand for Money: This is the relationship between the interest rate and the quantity of money people choose to hold as a stock.
• Expression of Demand:     * People demand income by selling labor and resources.     * People demand money by choosing to hold wealth in money form rather than in interest-bearing assets.

Drivers of the Demand for Money

• Medium of Exchange: Money is demanded because it is a convenient medium for making purchases and settling accounts established by credit cards.
• Determinants of Transaction Demand:     * Value of Transactions: Higher levels of economic activity (real output/$GDP$) increase money demand. For instance, an economy with a real $GDP$ of $\$23\text{ trillion}$ requires more money than one half that size.     * Price Levels: Higher average costs of goods and services increase the quantity of money needed. Economies with hyperinflation require "mountains of cash."
• Store of Value and Liquidity:     * Advantage (Liquidity): Money can be immediately exchanged for goods/services without being liquidated first (unlike bonds or other financial assets).     * Disadvantage (Opportunity Cost): Money (currency or debit accounts) typically earns no interest or very low interest compared to other financial assets.
• Opportunity Cost Calculation: The interest forgone is the cost of holding money. If a business could earn $3\%$ more by holding bonds than money, the opportunity cost of holding $\$1\text{ million}$ in cash is $\$30,000\text{ per year}$.

The Money Demand Curve and Interest Rates

• Inverse Relationship: The quantity of money demanded varies inversely with the market interest rate ($i$).     * Low Interest Rates: The cost of holding money is low, leading people to maintain more liquidity (e.g., $2017$ when rates on savings were below $2\%$).     * High Interest Rates: The cost of holding money is high, leading people to hold more wealth in higher-yielding assets.
• Downward Slope: The money demand curve ($D_m$) slopes downward because lower rates reduce the opportunity cost of holding money.
• Shifts in the Demand Curve:     * Real GDP Increase: Shifts $D_m$ to the right.     * Price Level Increase: Shifts $D_m$ to the right.     * Determinants (Assumed Constant): Price level and real $GDP$ are held constant along a single curve; changes in these variables cause shifts rather than movements along the curve.

Monetary Policy and Aggregate Demand in the Short Run

• Role of Interest Rates: In the short run, money affects the economy primarily through changes in the market interest rate, which then influences investment ($I$) and aggregate demand ($AD$).
• Expansionary Policy Chain of Causation (Limited Reserves):     1. The Fed increases the money supply ($M$) through open-market purchases of $U.S.$ government securities.     2. The money supply curve ($S_m$) shifts right from $S_m$ to $S'_m$.     3. An excess supply of money at the initial rate ($i$) leads people to exchange money for other financial assets.     4. The market interest rate falls to $i'$.     5. Lower interest rates reduce the cost of financing new plants, equipment, and housing.     6. The quantity of investment increases from $I$ to $I'$ (Panel b of Exhibit 17.3).     7. The spending multiplier (if > 1.0) amplifies this increase in investment.     8. The aggregate demand curve shifts right from $AD$ to $AD'$, increasing real output (Real $GDP$) from $Y$ to $Y'$.
• Contractionary Policy Chain of Causation:     1. The Fed reduces the money supply to cool an overheated economy.     2. The interest rate increases.     3. Higher borrowing costs make financing plants, equipment, and homes more expensive.     4. Investment ($I$) declines.     5. Aggregate demand ($AD$) shifts leftward.
• Sensitivity Factors: The effectiveness relies on the interest rate being sensitive to changes in money supply and investment being sensitive to changes in interest rates.

Analyzing Short-Run Equilibrium and Output Gaps

• Short-Run Aggregate Supply (SRAS): Crucial for determining how $AD$ shifts affect real $GDP$ vs. price level.     * If $SRAS$ is steep, a shift in $AD$ leads to a smaller increase in real $GDP$ and a larger increase in the price level.
• Closing a Recessionary Gap:     * Scenario: Economy produces at point $a$, where real output ($\$22.8\text{ trillion}$) is below potential ($\$23.0\text{ trillion}$). Recessionary gap = $\$0.2\text{ trillion}$.     * Action: The Fed implements expansionary policy to stimulate investment.     * Outcome: $AD$ shifts right to $AD'$, reaching equilibrium at point $b$ where output equals potential and the price level rises (e.g., from $105$ to $110$).     * Example: During $2007\text{--}2008$, the Fed cut the federal funds rate from $5.25\%$ to a range of $0\text{ to }0.25\%$. In March $2020$, the rate was cut from $1.50\%\text{--}1.75\%$ to $0\%\text{--}0.25\%$
• Closing an Inflationary Gap:     * Scenario: Economy produces at point $a$ with output ($\$23.5\text{ trillion}$) above potential ($\$23.0\text{ trillion}$). Inflationary gap = $\$0.5\text{ trillion}$.     * Action: The Fed implements contractionary policy (raising rates) to cool spending.     * Outcome: $AD$ shifts left to $AD'$, returning output to potential at point $b$, reducing price pressure.     * Risk: If the Fed moves too aggressively, it may trigger a recession through reduced consumer spending and business investment.     * Example: In $2021\text{--}2022$, inflation spiked to over $9\%$ (highest in 4 decades). The Fed raised the target rate $11$ times between March $2022$ and September $2023$, aiming for a "soft landing."

The Federal Funds Rate (FFR) in Practice

• Definition: The interest rate banks charge one another for overnight lending of reserves at the Fed.
• Function as a Benchmark: The $FFR$ serves as the base for other rates, such as the "prime interest rate" (the rate banks charge best corporate customers).
• Historical Timeline of FFR:     * Summer 1999: Target raised from $4.75\%$ to $6.5\%$ to diminish risk of rising inflation.     * 2001 Recession/9-11: FOMC reversed course, cutting rates from $6.5\%$ to $1.0\%$ by mid-$2003$.     * 2004–2006: FOMC raised rates in $17$ increments from $1.0\%$ to $5.25\%$ ("staircase shape").     * Dec 2008: Target rate cut to historical low of $0\text{ to }0.25\%$ following housing market troubles.     * Dec 2015: Fed began returning to normal, raising the range to $0.25\%\text{--}0.5\%$, peaking at $2.40\%$ in early $2019$.     * March 2020: Two unscheduled emergency meetings (March 3 and March 15) cut the rate back to $0\text{ to }0.25\%$ to support the economy during Covid-19.     * March 2022 – Sept 2023: Implementation of $11$ hikes, bringing the rate to a $22\text{-year}$ high of $5.25\%\text{--}5.5\%$

Monetary Policy and Aggregate Demand in the Long Run

• Long-Run Aggregate Supply (LRAS): Vertical at the economy's potential output level.
• Long-Run Impact: Increases in the money supply translate primarily into a higher price level (inflation) because real output remains fixed at potential.
• The Equation of Exchange:     * Formula: $M \times V = P \times Y$     * $M$ = quantity of money; $V$ = velocity of money; $P$ = average price level; $Y$ = real $GDP$.     * Identity: Total spending ($M \times V$) always equals total receipts ($P \times Y$, which is Nominal $GDP$).
• Calculating Velocity (V):     * Formula: $V = \frac{\text{Nominal GDP}}{M}$     * Example (2022): Nominal $GDP = \$25.7\text{ trillion}$; $M1 = \$20.4\text{ trillion}$. $V = 25.7 / 20.4 = 1.26$. On average, each dollar was used $1.26\text{ times}$ to pay for final goods/services.

The Quantity Theory of Money

• Core Theory: If velocity ($V$) is stable or predictable, the equation of exchange can predict the effect of money supply changes on nominal $GDP$.
• Predictive Model: If $M$ increases by $5\%$ and $V$ is constant, nominal $GDP$ ($P \times Y$) must increase by $5\%$
• Long-Run Division: Because $Y$ is fixed in the long run, and if $V$ is stable, any change in $M$ results in a proportional change in $P$. Output level is unaffected.
• Historical Evidence: Since $1913$, the $U.S.$ has seen four periods of high inflation preceded by sharp money supply increases: $1913\text{--}1920$, $1939\text{--}1948$, $1967\text{--}1980$, and $2020\text{--}2023$.

Determinants and Stability of Velocity

• Influencing Factors:     * Commercial Innovations: Electronic funds transmission, debit cards, and mobile payments increase velocity by moving the same stock of money faster.     * Stability as Store of Value: When money is a good store of value, people hold it longer (lower $V$). Interest-bearing checking accounts reduced velocity.     * Inflation Rate: High inflation makes money a "hot potato"; people spend it quickly to avoid losing purchasing power (higher $V$).
• Measurement and Stability Issues:     * M1 Velocity: Increased steadily $1960\text{--}1980$; fluctuated in the $1980s$; increased to $10.5$ in $2007$ as deposits moved to $M2$.     * The 2020 Measurement Change: In May $2020$, the Fed included savings deposits and money market accounts in $M1$. This caused a sharp increase in $M1$ and a drastic drop in observed $M1$ velocity.     * M2 Velocity: Historically more stable than $M1$, but dropped from $1.4$ to $1.1$ by July $2021$. Both are now considered too unpredictable for short-run policy use by the Fed.

Monetary Policy Targets and Frameworks

• Limited Reserves vs. Ample Reserves:     * Traditional (Limited): The Fed used open-market operations to shift a vertical reserve supply curve ($S_r$) along a downward-sloping demand curve ($D_r$). Capped by the discount rate.     * Current (Ample): Since $2008$, reserves are so abundant that the supply curve intersects the horizontal portion of the demand curve. Minor shifts in supply don't affect the $FFR$.     * Administered Rates: In ample reserves, the Fed uses the Interest on Reserve Balances ($IORB$) rate and the Overnight Reverse Repurchase ($ON RRP$) rate to set lower and upper bounds for the $FFR$.
• Choice of Targets (Interest Rates vs. Money Supply):     * Conflict: The Fed can target either the interest rate or the money supply, but not both simultaneously when money demand shifts.     * Targeting Interest Rates: Requires increasing the money supply during expansions (when $D_m$ shifts right) and decreasing it during contractions. This can reinforce economic fluctuations and add instability.     * Historical Shift (1979-1982): Under Paul Volcker, the Fed de-emphasized interest rates to target money aggregates to fight inflation. This led to high volatility and a sharp recession in $1982$.     * Modern Strategy (Post-2012): Explicit inflation targeting of $2\%$. Maintaining this target gives the Fed room to lower rates to stimulate the economy.

Unconventional Tools and Future Challenges

• Quantitative Easing (QE): Purchasing large quantities of government and mortgage-backed securities to inject liquidity and lower long-term rates. The Fed peak balance sheet reached nearly $\$9\text{ trillion}$.
• AIG Bailout (2008): A $\$182.5\text{ billion}$ package to save the insurance giant. Though controversial, Ben Bernanke argued it protected the financial system; it ultimately generated profit for the Treasury.
• Regulatory Oversight: Includes stress tests for major banks and "living wills" for orderly liquidation. Nonbank "shadow banking" is now under more control.
• Liquidity Trap and the Zero Lower Bound: When rates are near zero (as in $2009\text{--}2016$ and $2020$), traditional rate targeting fails. The Fed must use forward guidance or $QE$.
• Emerging Issues for the Fed:     * Financial Stability: Risk of asset bubbles (stocks, crypto) driven by "easy money."     * Climate Change: Pressure to redirect capital from carbon-intensive industries to eco-friendly ones.     * Wealth/Income Inequality: Arguments from Joseph Stiglitz that Fed policies contribute to the wealth gap.

Post-Pandemic Inflation Analysis

• Statistical Spike: Inflation was $0.1\%$ in May $2020$ and peaked at $9.1\%$ in June $2022$.
• Causes:     * Demand: Pent-up consumer demand following lockdowns.     * Supply: Global supply chain disruptions affecting semiconductors, lumber, and shipping.     * Labor: Shortages and subsequent wage increases.     * Fiscal/Monetary: Aggressive stimulus payments and historically low interest rates.
• Fed Reaction: Initially viewed inflation as temporary. Later moved to a restrictive stance, raising the $FFR$ by over $5\text{ percentage points}$ to reach $5.25\%\text{--}5.50\%$ by Sept $2023$.
• Quantitative Tightening: Trimming the balance sheet to increase borrowing costs further. Inflation dropped to $3.0\%$ in June $2023$ and $3.7\%$ by Sept $2023$.