Draw and label the Money Market Graph, and explain what shifts Money Demand ($MD$) versus Money Supply ($MS$).

• **Axes**: Vertical axis = **Nominal Interest Rate ($i$)** (the opportunity cost of holding liquid money instead of interest-bearing bonds); Horizontal axis = **Quantity of Money ($M$)**. • **Money Demand ($MD$)**: Downward-sloping because at high nominal interest rates ($i$), people hold less cash and more bonds (asset demand). **$MD$ Shifters** (Transaction Demand, proportional to Nominal GDP = $PL \times Y$): 1. **Change in Price Level ($PL$)**: $PL \uparrow \Rightarrow MD \uparrow$ (shifts right). 2. **Change in Real GDP ($Y$)**: $Y \uparrow \Rightarrow MD \uparrow$ (shifts right). 3. **Payment Technology** (credit cards/ATMs reduce cash needed $\Rightarrow MD \downarrow$). • **Money Supply ($MS$)**: **Vertical** (perfectly inelastic), controlled solely by the Central Bank (Federal Reserve).

Practice Bank Balance Sheet Problem: Suppose First National Bank has $\$100,000$ in Demand Deposits, $\$15,000$ in Total Reserves, and $\$85,000$ in Loans, with a Required Reserve Ratio $rr = 10\%$. What are (a) Required Reserves, (b) Excess Reserves, (c) the max new loans First National can make, and (d) the max increase in $M1$ across the entire banking system?

• **(a) Required Reserves ($RR$)**: $rr \times \text{Demand Deposits} = 0.10 \times \$100,000 = \mathbf{\$10,000}$. • **(b) Excess Reserves ($ER$)**: $\text{Total Reserves} - RR = \$15,000 - \$10,000 = \mathbf{\$5,000}$. • **(c) Max New Loans by First National Bank alone**: Equal to its Excess Reserves $= \mathbf{\$5,000}$. • **(d) Max Expansion of $M1$ across the Banking System**: $ER \times \frac{1}{rr} = \$5,000 \times \frac{1}{0.10} = \$5,000 \times 10 = \mathbf{+\$50,000}$.

What is the Money Multiplier ($1/rr$), and why does a $\$1,000$ Cash Deposit by a customer increase the Money Supply ($M1$) by LESS than a $\$1,000$ Federal Reserve Open-Market Bond Purchase?

• **Simple Money Multiplier**: $mm = \frac{1}{rr}$ (where $rr$ is the Required Reserve Ratio). • **Case 1: Customer Deposits $\$1,000$ Cash into Checking** (with $rr = 0.10$, $mm = 10$): - **Immediate change in $M1 = \$0$** (composition shifts from currency to demand deposits). - Bank must hold $10\%$ ($\$100$) as Required Reserves and gets **$ER = \$900$**. - **Maximum New Loans / New Money Created**: $ER \times mm = \$900 \times 10 = \mathbf{\$9,000}$ (Total Demand Deposits rise by $\$10,000$, net $\Delta M1 = +\$9,000$). • **Case 2: Central Bank Buys $\$1,000$ of Bonds from a Bank** (with $rr = 0.10$): - All $\$1,000$ goes directly into **Excess Reserves ($ER = \$1,000$)** because Demand Deposits did not change initially! - **Maximum New Loans / $\Delta M1$**: $\$1,000 \times 10 = \mathbf{+\$10,000}$.

Trace the complete Monetary Policy Transmission Mechanism for Expansionary and Contractionary Monetary Policy in a Limited Reserves Regime.

• **Expansionary (Easy Money) Policy** (Recessionary Gap): Central Bank **buys bonds** (or lowers $rr$ / Discount Rate) $\rightarrow$ Bank Excess Reserves $\uparrow$ $\rightarrow$ Money Supply ($MS$) shifts **RIGHT** $\rightarrow$ Nominal Interest Rate ($i$) **FALLS** (and Real Interest Rate $r$ falls in the short run) $\rightarrow$ Interest-sensitive Investment ($I$) and Consumption ($C$) **INCREASE** $\rightarrow$ **$AD$ shifts RIGHT** $\rightarrow$ Real GDP ($Y$) $\uparrow$, Price Level ($PL$) $\uparrow$, Unemployment $\downarrow$. • **Contractionary (Tight Money) Policy** (Inflationary Gap): Central Bank **sells bonds** (or raises $rr$ / Discount Rate) $\rightarrow$ Bank Reserves $\downarrow$ $\rightarrow$ $MS$ shifts **LEFT** $\rightarrow$ Interest Rate ($i$) **RISES** $\rightarrow$ $I$ and $C$ **DECREASE** $\rightarrow$ **$AD$ shifts LEFT** $\rightarrow$ $Y \downarrow$, $PL \downarrow$, Unemployment $\uparrow$.

What happens in the Money Market when the Price Level ($PL$) rises (e.g., from a rightward shift in $AD$ or leftward shift in $SRAS$)?

When the Price Level ($PL$) rises, households and firms need more money for everyday transactions (**Transaction Demand for Money increases**). On the **Money Market graph**, the **Money Demand ($MD$) curve shifts to the RIGHT**, while the vertical Money Supply ($MS$) stays fixed—driving the **equilibrium Nominal Interest Rate ($i$) UP**.

Wait—if Expansionary Fiscal Policy ($G \uparrow$) raises domestic Real GDP ($Y \uparrow$) AND raises Real Interest Rates ($r \uparrow$), why do BOTH effects reinforce a decrease in Net Exports ($X_n \downarrow$)?

• **Interest Rate Channel**: Deficit spending ($G \uparrow$) raises domestic real interest rates ($r \uparrow$) $\rightarrow$ attracts foreign financial capital inflows $\rightarrow$ **appreciates the domestic currency** $\rightarrow$ reduces Net Exports ($X_n \downarrow$). • **Income Channel**: Higher domestic Real GDP ($Y \uparrow$) means domestic consumers have more income and buy more imported goods ($M \uparrow$) $\rightarrow$ also reduces Net Exports ($X_n \downarrow$). Thus, Expansionary Fiscal Policy unambiguously pushes the **Trade Balance ($X_n$) toward a deficit** ('Twin Deficits': budget deficit + trade deficit).

What is the difference between a Floating (Flexible) Exchange Rate Regime and a Fixed (Pegged) Exchange Rate Regime?

• **Floating Exchange Rate** (U.S. Dollar, Euro, Yen, Pound): Exchange rate is determined freely by private supply and demand in the FOREX market, allowing the Central Bank to conduct independent domestic monetary policy. • **Fixed (Pegged) Exchange Rate**: The government/Central Bank commits to maintaining a fixed exchange rate against an anchor currency by buying/selling foreign currency reserves or adjusting domestic interest rates—surrendering independent monetary policy ('Impossible Trinity').

Compare the Central Bank's Monetary Policy Tools in an Economy with LIMITED RESERVES vs. an Economy with AMPLE RESERVES (the current AP Macro framework).

• **Limited Reserves Regime** (traditional Money Market / Reserve Market steep slope): The Central Bank changes the money supply and the overnight policy rate (**Federal Funds Rate**) using three tools: 1. **Open-Market Operations (OMOs)**—**Buying** government bonds (**Expansionary**: increases reserves/money supply, lowers $i$) or **Selling** bonds (**Contractionary**: decreases reserves/money supply, raises $i$); 2. **Required Reserve Ratio ($rr$)**; 3. **Discount Rate** (interest rate the Fed charges banks for direct loans). • **Ample Reserves Regime** (flat lower portion of the Reserve Demand curve, like the U.S. Fed today): Small OMOs do *not* change the policy rate! Instead, the Central Bank adjusts its **Administered Interest Rates**—specifically **Interest on Reserves (IOR / IORB)** (and the overnight reverse repo rate)—moving the flat portion of the reserve curve up or down.

Why do Bond Prices and Nominal Interest Rates ALWAYS move in OPPOSITE directions?

Existing bonds pay a **fixed annual dollar coupon** (e.g., $\$50$/year on a $\$1,000$ face-value bond $= 5\%$ yield). If market nominal interest rates **rise** to $10\%$, no investor will buy the old $\$50$-coupon bond unless its market price **falls** so that $\frac{\text{Fixed Coupon}}{\text{Bond Price}}$ matches the higher new market yield. Conversely, when interest rates **fall**, existing bond prices **rise**.

What is 'Quantitative Easing (QE)' and the 'Zero Lower Bound (Liquidity Trap),' and why did Central Banks use QE in 2008 and 2020?

When a severe recession drives the Central Bank's overnight nominal policy rate all the way down to **near $0\%$ (the Zero Lower Bound)**, conventional short-term rate cuts cannot go much lower (and banks/households hoard cash in a **Liquidity Trap**). Under **Quantitative Easing (QE)**, the Central Bank purchases massive quantities of **long-term Treasury bonds and mortgage-backed securities (MBS)** to drive up long-term bond prices and **lower long-term interest rates** (such as 30-year mortgage and corporate bond rates).

What are the three Functions of Money, and what assets are included in the M1 and M2 Monetary Aggregates (and the Monetary Base $MB$)?

• **Three Functions of Money**: 1. **Medium of Exchange** (eliminates the 'double coincidence of wants' of barter); 2. **Unit of Account** (yardstick for measuring prices and debts); 3. **Store of Value** (preserves purchasing power over time, though eroded by inflation). • **Monetary Base ($MB$, 'high-powered money')**: Currency in circulation + Bank reserves held at the Central Bank. • **M1 (Most Liquid)**: Currency/coins in circulation + Checkable deposits (demand deposits) + Savings deposits (including money market deposit accounts since May 2020). • **M2**: **All of M1** + Small-denomination time deposits (CDs $<\$100\text{k}$) + Retail money market mutual funds. (*Note*: Credit cards, stocks, and bonds are **NOT** money!).

Summarize the complete impact of a Recessionary Shock ($AD \downarrow$) across all 5 core AP Macroeconomics graphs ($AD\text{–}AS$, Phillips Curve, Money Market, Loanable Funds, and FOREX).

1. **$AD\text{–}AS$ Graph**: $AD$ shifts **left** $\rightarrow$ Price Level ($PL$) falls and Real GDP ($Y$) falls below $Y_f$. 2. **Phillips Curve**: Movement **down and to the right along the $SRPC$** (lower inflation, higher unemployment). 3. **Money Market**: Lower $PL$ and lower $Y$ reduce transaction demand for money $\rightarrow$ **$MD$ shifts LEFT** $\rightarrow$ Nominal Interest Rate ($i$) falls. 4. **Loanable Funds**: Lower business demand for borrowing ($D_{LF} \downarrow$) lowers the **Real Interest Rate ($r \downarrow$)**. 5. **FOREX Market**: Lower domestic real interest rate ($r \downarrow$) reduces foreign capital inflows ($D_{\text{currency}} \downarrow$) $\rightarrow$ **domestic currency DEPRECIATES**, which gradually boosts Net Exports ($X_n \uparrow$).

What is Purchasing Power Parity (PPP), and how does it explain Long-Run Exchange Rates?

**Purchasing Power Parity (PPP)** is built on the **Law of One Price**: in the absence of transportation costs and trade barriers, an identical basket of goods should cost the exact same amount in any two countries when expressed in a common currency ($e = P_{\text{foreign}} / P_{\text{domestic}}$). If Country A experiences $5\%$ higher annual inflation than Country B, Country A's currency will **depreciate by approximately $5\%$ per year** in the long run.

Compare Fiat Money and Commodity Money, and explain why Fiat Money has value.

• **Commodity Money** (gold coins, silver bullion, salt, cigarettes in POW camps): Has **intrinsic value**—the item has practical use or value even if it were not used as money. • **Fiat Money** (modern U.S. Federal Reserve Notes, Euros, Yen): Has **zero intrinsic value** and is not backed by gold or silver; its value derives solely from **government decree (legal tender laws)**, public confidence/trust, and the Central Bank keeping its supply scarce.

How does an increase in Foreign Direct Investment (e.g., a Japanese automaker building a new factory in Texas) affect the U.S. Balance of Payments, FOREX market, and $LRAS$?

1. **Balance of Payments**: Recorded as a **credit (inflow) in the U.S. Capital and Financial Account (CFA Surplus)**. 2. **FOREX Market**: Japanese investors must exchange Yen for U.S. Dollars ($D_{\$} \uparrow, S_{\text{¥}} \uparrow$), causing the **U.S. Dollar to APPRECIATE** and the Yen to depreciate. 3. **$AD$ and $LRAS$**: The new factory construction increases U.S. physical capital ($I \uparrow, K \uparrow$), shifting U.S. **$LRAS$ to the RIGHT** (boosting long-run economic growth).

What are the four major shifters ('TIPS') of the Foreign Exchange (FOREX) Market, and how does each affect Currency Appreciation/Depreciation and Net Exports ($X_n$)?

• **T — Tastes & Preferences / Tourism**: Foreign tourists flock to the U.S. $\Rightarrow D_{\$} \uparrow \Rightarrow$ **Dollar appreciates**. • **I — Relative Real Interest Rates ($r$)**: If U.S. real interest rates rise relative to Europe ($r_{\text{US}} > r_{\text{EU}}$), foreign investors seek higher returns in U.S. bonds $\Rightarrow$ **Capital Inflow to U.S.** $\Rightarrow D_{\$} \uparrow$ (and $S_{\$} \downarrow$) $\Rightarrow$ **U.S. Dollar APPRECIATES**. • **P — Relative Price Levels (Inflation)**: Higher U.S. inflation makes U.S. goods uncompetitive $\Rightarrow D_{\$} \downarrow$ and $S_{\$} \uparrow$ (Americans buy cheaper foreign goods) $\Rightarrow$ **U.S. Dollar DEPRECIATES**. • **S — Speculation / Relative Income (GDP)**: If Europe's Real GDP booms, Europeans buy more U.S. imports $\Rightarrow D_{\$} \uparrow \Rightarrow$ **U.S. Dollar APPRECIATES**.

How is the 'Crowding-Out Effect' of Deficit-Financed Expansionary Fiscal Policy shown on the Loanable Funds Graph?

When the government increases spending ($G \uparrow$) or cuts taxes ($T \downarrow$) without an offsetting policy, the resulting **budget deficit** can be modeled on the Loanable Funds graph in either of two accepted AP ways: 1. **Demand for Loanable Funds shifts RIGHT ($D_{LF} \uparrow$)** as the Treasury borrows more; OR 2. **Supply of Loanable Funds shifts LEFT ($S_{LF} \downarrow$)** as national saving ($S_{\text{private}} + S_{\text{public}}$) decreases. In **BOTH** representations, the **Real Interest Rate ($r$) RISES**, which reduces private business **Investment ($I \downarrow$)** and slows long-run capital formation ($LRAS$).

How do Monetary Policy and Fiscal Policy interact when used together (Policy Mixes) to affect Real GDP ($Y$), the Interest Rate ($r$), and Investment ($I$)?

• **Expansionary Fiscal ($G \uparrow$) + Expansionary Monetary ($MS \uparrow$)** (both fight recession): Real GDP **$Y$ definitely increases**, while the effect on the **Interest Rate is indeterminate** ($G \uparrow$ pushes $i$ up via higher $MD$/borrowing, while $MS \uparrow$ pushes $i$ down). • **Contractionary Fiscal ($G \downarrow$) + Expansionary Monetary ($MS \uparrow$)**: Interest Rate **$i$ and $r$ definitely FALL**, which strongly boosts **Private Investment ($I \uparrow$)** and long-run economic growth! • **Expansionary Fiscal ($G \uparrow$) + Contractionary Monetary ($MS \downarrow$)**: Interest Rate **$i$ and $r$ definitely RISE**, severely **crowding out Private Investment ($I \downarrow$)**.

Trace the complete chain of effects from a rise in U.S. Real Interest Rates ($r \uparrow$) to U.S. Net Exports ($X_n$) and Aggregate Demand ($AD$).

1. Higher U.S. real interest rate ($r_{\text{US}} \uparrow$) attracts foreign financial investors seeking higher bond yields (**Net Capital Inflow $\uparrow$**, Capital & Financial Account moves toward **Surplus**). 2. Foreigners increase the **Demand for U.S. Dollars ($D_{\$} \uparrow$)** (and U.S. investors supply fewer dollars abroad, $S_{\$} \downarrow$). 3. The **U.S. Dollar APPRECIATES** in the FOREX market. 4. A stronger dollar makes U.S. exports **more expensive** to foreigners ($X \downarrow$) and foreign imports **cheaper** to Americans ($M \uparrow$). 5. **U.S. Net Exports FALL ($X_n \downarrow$)** (Current Account moves toward **Deficit**), which shifts U.S. **Aggregate Demand to the LEFT ($AD \downarrow$)**.

How does a Protective Tariff or Import Quota imposed by Country A affect the Foreign Exchange Market and Country A's Exports?

When Country A imposes a tariff on imports from Country B: 1. Citizens of Country A buy fewer imports from Country B, so they **supply less of Currency A** in the FOREX market ($S_A$ shifts **LEFT**). 2. **Currency A APPRECIATES** relative to Currency B. 3. Because Currency A is now stronger (and Currency B is weaker), Country A's **exports become more expensive to foreigners and FALL ($X \downarrow$)**—partially or fully offsetting the drop in imports so **Net Exports ($X_n$) do not improve** in the long run!

What happens to a Commercial Bank's Balance Sheet immediately when a customer withdraws $\$2,000$ in cash from their checking account (with $rr = 10\%$)?

1. **Liabilities**: Demand Deposits decrease by $\$2,000$. 2. **Assets**: Total Reserves (vault cash) decrease by $\$2,000$. 3. **Required Reserves ($RR$)**: Decrease by $0.10 \times \$2,000 = \$200$. 4. **Excess Reserves ($ER = \Delta TR - \Delta RR$)**: Decrease by $\$2,000 - \$200 = \mathbf{\$1,800}$ (if the bank had zero excess reserves before the withdrawal, it now has a **reserve deficiency of $\$1,800$** and must borrow in the federal funds market, sell bonds, or call in loans).

How do you draw and label a Foreign Exchange (FOREX) Market Graph for the U.S. Dollar ($\$) relative to the Euro ($\text{€}$), and why must Demand and Supply in the two currencies move together?

• **Market for U.S. Dollars ($\$)**: - **Horizontal Axis**: Quantity of U.S. Dollars ($Q_{\$}$). - **Vertical Axis**: Exchange Rate in **Euros per Dollar ($\text{€}/\$)** (always put the currency being graphed in the denominator!). • **Reciprocal Rule**: Whenever foreigners want to buy U.S. goods or U.S. financial assets, they **Demand U.S. Dollars ($D_{\$}$ shifts RIGHT)** in the Dollar market AND simultaneously **Supply their own currency ($S_{\text{€}}$ shifts RIGHT)** in the Euro market! Consequently, if the **Dollar Appreciates ($\text{€}/\$ \uparrow$)**, the **Euro MUST Depreciate ($\$/\text{€} \downarrow$)**.

Why must you be careful distinguishing between a change in the 'Demand for Money ($MD$)' and a change in the 'Demand for Loanable Funds ($D_{LF}$)' on AP Macro FRQs?

• **Demand for Money ($MD$ in the Money Market)**: The desire to hold wealth as **liquid cash/checking deposits** rather than bonds; shifts when **Price Level ($PL$)** or **Real GDP ($Y$)** changes. • **Demand for Loanable Funds ($D_{LF}$ in the Loanable Funds Market)**: The desire to **borrow money** to finance business capital investment ($I$) or a government budget deficit; shifts when business confidence, investment tax credits, or government deficits change.

How does a decrease in the Required Reserve Ratio ($rr$) affect a bank's Total Reserves, Required Reserves, Excess Reserves, and the Money Multiplier?

When the Central Bank lowers $rr$ (e.g., from $10\%$ to $5\%$): • **Total Reserves**: **DO NOT CHANGE immediately**. • **Required Reserves ($RR$)**: **DECREASE** immediately. • **Excess Reserves ($ER$)**: **INCREASE** immediately by the exact amount that $RR$ fell. • **Money Multiplier ($1/rr$)**: **INCREASES** (from $10$ to $20$), allowing banks to create more new loans and expand $M1$.

On a commercial bank T-Account (Balance Sheet), distinguish between Assets and Liabilities, and between Required Reserves ($RR$) and Excess Reserves ($ER$).

• **Liabilities**: **Demand Deposits** (checkable deposits owed to customers), Savings/Time Deposits, Borrowings from the Fed/other banks, and Bank Capital (Net Worth / Owners' Equity). • **Assets**: **Total Reserves** (Vault cash + Reserve deposits at the Fed), **Loans** to customers, **Government Bonds (Treasury securities)**, and Physical Property. • **Reserves Formula**: $\text{Total Reserves (TR)} = \text{Required Reserves (RR)} + \text{Excess Reserves (ER)}$, where $\text{RR} = \text{Required Reserve Ratio } (rr) \times \text{Demand Deposits}$. A single bank can safely lend out **at most its Excess Reserves ($ER$)**.

Draw the Reserve Market Graph (Policy Rate vs. Quantity of Reserves) and explain how Expansionary vs. Contractionary Monetary Policy works under Ample Reserves.

• **Reserve Market Axes**: Vertical axis = **Policy Rate (Federal Funds Rate)**; Horizontal axis = **Quantity of Bank Reserves**. • **Demand for Reserves Curve**: Has a downward-sloping section (when reserves are limited, capped at the **Discount Rate**) and a **flat horizontal floor** (when reserves are **ample**, anchored at the **Interest on Reserves [IOR]** rate). • **Under Ample Reserves**: - **Expansionary Monetary Policy** (to fight a Recession): The Central Bank **LOWERS Interest on Reserves (IOR)** $\rightarrow$ Policy Rate falls $\rightarrow$ nominal & real interest rates fall $\rightarrow$ $I$ and interest-sensitive $C$ increase $\rightarrow$ **$AD$ shifts RIGHT**. - **Contractionary Monetary Policy** (to fight Inflation): The Central Bank **RAISES Interest on Reserves (IOR)** $\rightarrow$ Policy Rate rises $\rightarrow$ interest rates rise $\rightarrow$ $I$ and $C$ fall $\rightarrow$ **$AD$ shifts LEFT**.

How does an increase in Expected Inflation ($\pi^e \uparrow$) affect the Loanable Funds Market and the Nominal Interest Rate (the 'Fisher Effect')?

When borrowers and lenders expect higher future inflation ($\pi^e \uparrow$): 1. Borrowers want to borrow more today to repay with cheaper future dollars (**Demand for Loanable Funds $D_{LF}$ shifts RIGHT**). 2. Lenders are reluctant to lend unless compensated for lost purchasing power (**Supply of Loanable Funds $S_{LF}$ shifts LEFT**). 3. Result: The **Nominal Interest Rate ($i$) rises one-for-one with expected inflation ($i = r + \pi^e$)** while the equilibrium quantity of loanable funds and the real interest rate ($r$) remain unchanged.

Compare the Money Market Graph and the Loanable Funds Market Graph, including their axes, borrowers/lenders, and shifters.

• **Money Market** (Short-Run liquidity): Vertical axis = **Nominal Interest Rate ($i$)**; Horizontal axis = **Quantity of Money ($M$)**; $MS$ is vertical (set by Central Bank). • **Loanable Funds Market** (Long-Run saving & investment): Vertical axis = **Real Interest Rate ($r$)**; Horizontal axis = **Quantity of Loanable Funds ($Q_{LF}$)**. - **Demand for Loanable Funds ($D_{LF}$, downward-sloping)**: Driven by **Private Business Borrowing for Investment ($I$)** and **Government Deficit Borrowing**. - **Supply of Loanable Funds ($S_{LF}$, upward-sloping)**: Driven by **Private Household Saving**, **Public Saving (Government Budget Surplus)**, and **Foreign Capital Inflows (Net Capital Inflow)**.

What is the 'Federal Funds Rate,' and how does it differ from the 'Discount Rate' and 'Prime Rate'?

• **Federal Funds Rate**: The overnight interest rate that **commercial banks charge ONE ANOTHER** for short-term loans of bank reserves; it is the Federal Reserve's primary **target policy rate**. • **Discount Rate**: The interest rate that the **Federal Reserve itself charges commercial banks** for direct loans from the Fed's 'discount window' (serves as the upper ceiling of the reserve market). • **Prime Rate**: The benchmark interest rate commercial banks charge their most creditworthy corporate customers.

What three real-world leakages make the actual Money Multiplier smaller than the theoretical $\frac{1}{rr}$?

1. **Banks hold Excess Reserves**: Banks may choose not to lend out 100% of their excess reserves (especially when the Fed pays interest on reserves or during economic uncertainty). 2. **Households hold Cash (Currency Drain)**: Borrowers keep part of their loans as physical currency in their wallets rather than redepositing 100% into checking accounts. 3. **Insufficient Borrower Demand**: Creditworthy consumers and businesses may be unwilling to take out loans.

How does Expansionary Monetary Policy affect the domestic currency's Exchange Rate and Net Exports ($X_n$) through the Interest Rate Channel?

1. Expansionary Monetary Policy lowers domestic nominal and real interest rates ($r \downarrow$). 2. Lower domestic bond yields cause financial capital to flow **OUT** of the country toward higher-yielding foreign bonds (**Capital Outflow**, $S_{\text{domestic currency}} \uparrow$ and $D_{\text{domestic currency}} \downarrow$). 3. The **domestic currency DEPRECIATES** in the FOREX market. 4. A weaker domestic currency makes domestic exports **cheaper** to foreigners ($X \uparrow$) and imports **more expensive** ($M \downarrow$). 5. **Net Exports INCREASE ($X_n \uparrow$)**, which **reinforces** the rightward shift in Aggregate Demand ($AD \uparrow$)!

In the Balance of Payments (BOP) accounts, distinguish between the Current Account (CA) and the Capital and Financial Account (CFA), and explain why $\text{CA} + \text{CFA} = 0$.

• **Current Account (CA)**: Records flows of goods, services, income, and transfers: 1. **Net Exports ($X - M$, Balance of Trade)**; 2. **Net Investment Income** (dividends/interest earned by domestic citizens on foreign assets minus payments to foreigners); 3. **Net Unilateral Transfers** (foreign aid, remittances sent abroad). • **Capital and Financial Account (CFA)**: Records international purchases and sales of **financial and real assets** (foreign direct investment [building a factory], portfolio investment in stocks and government bonds). $\text{Net Capital Inflow} = \text{Foreign purchases of domestic assets} - \text{Domestic purchases of foreign assets}$. • Under floating exchange rates, **$\text{CA} + \text{CFA} = 0$**: a **Current Account Deficit (Trade Deficit, $X_n 0$)**!

AP Macroeconomics: Money Market, Loanable Funds, Central Bank Monetary Policy & Foreign Exchange

High-yield AP Macroeconomics Units 4 & 6 review covering functions of money, M1/M2, fractional reserve banking, the money multiplier, Money Market vs. Loanable Funds graphs, Federal Reserve monetary policy (ample vs. limited reserves), Balance of Payments, and Foreign Exchange.

Level: advanced
Languages: en → en
Cards: 32
Markdown: AP Macroeconomics: Money Market, Loanable Funds, Central Bank Monetary Policy & Foreign Exchange (.md)

Flashcards (32)

#	Front (Term / Question)	Back (Definition / Answer)
1	Draw and label the Money Market Graph, and explain what shifts Money Demand ($MD$) versus Money Supply ($MS$).	• Axes: Vertical axis = Nominal Interest Rate ($i$) (the opportunity cost of holding liquid money instead of interest-bearing bonds); Horizontal axis = Quantity of Money ($M$). • Money Demand ($MD$): Downward-sloping because at high nominal interest rates ($i$), people hold less cash and more bonds (asset demand). $MD$ Shifters (Transaction Demand, proportional to Nominal GDP = $PL \times Y$): 1. Change in Price Level ($PL$): $PL \uparrow \Rightarrow MD \uparrow$ (shifts right). 2. Change in Real GDP ($Y$): $Y \uparrow \Rightarrow MD \uparrow$ (shifts right). 3. Payment Technology (credit cards/ATMs reduce cash needed $\Rightarrow MD \downarrow$). • Money Supply ($MS$): Vertical (perfectly inelastic), controlled solely by the Central Bank (Federal Reserve).
2	Practice Bank Balance Sheet Problem: Suppose First National Bank has $\$100,000$ in Demand Deposits, $\$15,000$ in Total Reserves, and $\$85,000$ in Loans, with a Required Reserve Ratio $rr = 10\%$. What are (a) Required Reserves, (b) Excess Reserves, (c) the max new loans First National can make, and (d) the max increase in $M1$ across the entire banking system?	• (a) Required Reserves ($RR$): $rr \times \text{Demand Deposits} = 0.10 \times \$100,000 = \mathbf{\$10,000}$. • (b) Excess Reserves ($ER$): $\text{Total Reserves} - RR = \$15,000 - \$10,000 = \mathbf{\$5,000}$. • (c) Max New Loans by First National Bank alone: Equal to its Excess Reserves $= \mathbf{\$5,000}$. • (d) Max Expansion of $M1$ across the Banking System: $ER \times \frac{1}{rr} = \$5,000 \times \frac{1}{0.10} = \$5,000 \times 10 = \mathbf{+\$50,000}$.
3	What is the Money Multiplier ($1/rr$), and why does a $\$1,000$ Cash Deposit by a customer increase the Money Supply ($M1$) by LESS than a $\$1,000$ Federal Reserve Open-Market Bond Purchase?	• Simple Money Multiplier: $mm = \frac{1}{rr}$ (where $rr$ is the Required Reserve Ratio). • Case 1: Customer Deposits $\$1,000$ Cash into Checking (with $rr = 0.10$, $mm = 10$): - Immediate change in $M1 = \$0$ (composition shifts from currency to demand deposits). - Bank must hold $10\%$ ($\$100$) as Required Reserves and gets $ER = \$900$. - Maximum New Loans / New Money Created: $ER \times mm = \$900 \times 10 = \mathbf{\$9,000}$ (Total Demand Deposits rise by $\$10,000$, net $\Delta M1 = +\$9,000$). • Case 2: Central Bank Buys $\$1,000$ of Bonds from a Bank (with $rr = 0.10$): - All $\$1,000$ goes directly into Excess Reserves ($ER = \$1,000$) because Demand Deposits did not change initially! - Maximum New Loans / $\Delta M1$: $\$1,000 \times 10 = \mathbf{+\$10,000}$.
4	Trace the complete Monetary Policy Transmission Mechanism for Expansionary and Contractionary Monetary Policy in a Limited Reserves Regime.	• Expansionary (Easy Money) Policy (Recessionary Gap): Central Bank buys bonds (or lowers $rr$ / Discount Rate) $\rightarrow$ Bank Excess Reserves $\uparrow$ $\rightarrow$ Money Supply ($MS$) shifts RIGHT $\rightarrow$ Nominal Interest Rate ($i$) FALLS (and Real Interest Rate $r$ falls in the short run) $\rightarrow$ Interest-sensitive Investment ($I$) and Consumption ($C$) INCREASE $\rightarrow$ $AD$ shifts RIGHT $\rightarrow$ Real GDP ($Y$) $\uparrow$, Price Level ($PL$) $\uparrow$, Unemployment $\downarrow$. • Contractionary (Tight Money) Policy (Inflationary Gap): Central Bank sells bonds (or raises $rr$ / Discount Rate) $\rightarrow$ Bank Reserves $\downarrow$ $\rightarrow$ $MS$ shifts LEFT $\rightarrow$ Interest Rate ($i$) RISES $\rightarrow$ $I$ and $C$ DECREASE $\rightarrow$ $AD$ shifts LEFT $\rightarrow$ $Y \downarrow$, $PL \downarrow$, Unemployment $\uparrow$.
5	What happens in the Money Market when the Price Level ($PL$) rises (e.g., from a rightward shift in $AD$ or leftward shift in $SRAS$)?	When the Price Level ($PL$) rises, households and firms need more money for everyday transactions (Transaction Demand for Money increases). On the Money Market graph, the Money Demand ($MD$) curve shifts to the RIGHT, while the vertical Money Supply ($MS$) stays fixed—driving the equilibrium Nominal Interest Rate ($i$) UP.
6	Wait—if Expansionary Fiscal Policy ($G \uparrow$) raises domestic Real GDP ($Y \uparrow$) AND raises Real Interest Rates ($r \uparrow$), why do BOTH effects reinforce a decrease in Net Exports ($X_n \downarrow$)?	• Interest Rate Channel: Deficit spending ($G \uparrow$) raises domestic real interest rates ($r \uparrow$) $\rightarrow$ attracts foreign financial capital inflows $\rightarrow$ appreciates the domestic currency $\rightarrow$ reduces Net Exports ($X_n \downarrow$). • Income Channel: Higher domestic Real GDP ($Y \uparrow$) means domestic consumers have more income and buy more imported goods ($M \uparrow$) $\rightarrow$ also reduces Net Exports ($X_n \downarrow$). Thus, Expansionary Fiscal Policy unambiguously pushes the Trade Balance ($X_n$) toward a deficit ('Twin Deficits': budget deficit + trade deficit).
7	What is the difference between a Floating (Flexible) Exchange Rate Regime and a Fixed (Pegged) Exchange Rate Regime?	• Floating Exchange Rate (U.S. Dollar, Euro, Yen, Pound): Exchange rate is determined freely by private supply and demand in the FOREX market, allowing the Central Bank to conduct independent domestic monetary policy. • Fixed (Pegged) Exchange Rate: The government/Central Bank commits to maintaining a fixed exchange rate against an anchor currency by buying/selling foreign currency reserves or adjusting domestic interest rates—surrendering independent monetary policy ('Impossible Trinity').
8	Compare the Central Bank's Monetary Policy Tools in an Economy with LIMITED RESERVES vs. an Economy with AMPLE RESERVES (the current AP Macro framework).	• Limited Reserves Regime (traditional Money Market / Reserve Market steep slope): The Central Bank changes the money supply and the overnight policy rate (Federal Funds Rate) using three tools: 1. Open-Market Operations (OMOs)—Buying government bonds (Expansionary: increases reserves/money supply, lowers $i$) or Selling bonds (Contractionary: decreases reserves/money supply, raises $i$); 2. Required Reserve Ratio ($rr$); 3. Discount Rate (interest rate the Fed charges banks for direct loans). • Ample Reserves Regime (flat lower portion of the Reserve Demand curve, like the U.S. Fed today): Small OMOs do not change the policy rate! Instead, the Central Bank adjusts its Administered Interest Rates—specifically Interest on Reserves (IOR / IORB) (and the overnight reverse repo rate)—moving the flat portion of the reserve curve up or down.
9	Why do Bond Prices and Nominal Interest Rates ALWAYS move in OPPOSITE directions?	Existing bonds pay a fixed annual dollar coupon (e.g., $\$50$/year on a $\$1,000$ face-value bond $= 5\%$ yield). If market nominal interest rates rise to $10\%$, no investor will buy the old $\$50$-coupon bond unless its market price falls so that $\frac{\text{Fixed Coupon}}{\text{Bond Price}}$ matches the higher new market yield. Conversely, when interest rates fall, existing bond prices rise.
10	What is 'Quantitative Easing (QE)' and the 'Zero Lower Bound (Liquidity Trap),' and why did Central Banks use QE in 2008 and 2020?	When a severe recession drives the Central Bank's overnight nominal policy rate all the way down to near $0\%$ (the Zero Lower Bound), conventional short-term rate cuts cannot go much lower (and banks/households hoard cash in a Liquidity Trap). Under Quantitative Easing (QE), the Central Bank purchases massive quantities of long-term Treasury bonds and mortgage-backed securities (MBS) to drive up long-term bond prices and lower long-term interest rates (such as 30-year mortgage and corporate bond rates).
11	What are the three Functions of Money, and what assets are included in the M1 and M2 Monetary Aggregates (and the Monetary Base $MB$)?	• Three Functions of Money: 1. Medium of Exchange (eliminates the 'double coincidence of wants' of barter); 2. Unit of Account (yardstick for measuring prices and debts); 3. Store of Value (preserves purchasing power over time, though eroded by inflation). • Monetary Base ($MB$, 'high-powered money'): Currency in circulation + Bank reserves held at the Central Bank. • M1 (Most Liquid): Currency/coins in circulation + Checkable deposits (demand deposits) + Savings deposits (including money market deposit accounts since May 2020). • M2: All of M1 + Small-denomination time deposits (CDs lt;\$100\text{k}$) + Retail money market mutual funds. (Note: Credit cards, stocks, and bonds are NOT money!).
12	Summarize the complete impact of a Recessionary Shock ($AD \downarrow$) across all 5 core AP Macroeconomics graphs ($AD\text{–}AS$, Phillips Curve, Money Market, Loanable Funds, and FOREX).	1. $AD\text{–}AS$ Graph: $AD$ shifts left $\rightarrow$ Price Level ($PL$) falls and Real GDP ($Y$) falls below $Y_f$. 2. Phillips Curve: Movement down and to the right along the $SRPC$ (lower inflation, higher unemployment). 3. Money Market: Lower $PL$ and lower $Y$ reduce transaction demand for money $\rightarrow$ $MD$ shifts LEFT $\rightarrow$ Nominal Interest Rate ($i$) falls. 4. Loanable Funds: Lower business demand for borrowing ($D_{LF} \downarrow$) lowers the Real Interest Rate ($r \downarrow$). 5. FOREX Market: Lower domestic real interest rate ($r \downarrow$) reduces foreign capital inflows ($D_{\text{currency}} \downarrow$) $\rightarrow$ domestic currency DEPRECIATES, which gradually boosts Net Exports ($X_n \uparrow$).
13	What is Purchasing Power Parity (PPP), and how does it explain Long-Run Exchange Rates?	Purchasing Power Parity (PPP) is built on the Law of One Price: in the absence of transportation costs and trade barriers, an identical basket of goods should cost the exact same amount in any two countries when expressed in a common currency ($e = P_{\text{foreign}} / P_{\text{domestic}}$). If Country A experiences $5\%$ higher annual inflation than Country B, Country A's currency will depreciate by approximately $5\%$ per year in the long run.
14	Compare Fiat Money and Commodity Money, and explain why Fiat Money has value.	• Commodity Money (gold coins, silver bullion, salt, cigarettes in POW camps): Has intrinsic value—the item has practical use or value even if it were not used as money. • Fiat Money (modern U.S. Federal Reserve Notes, Euros, Yen): Has zero intrinsic value and is not backed by gold or silver; its value derives solely from government decree (legal tender laws), public confidence/trust, and the Central Bank keeping its supply scarce.
15	How does an increase in Foreign Direct Investment (e.g., a Japanese automaker building a new factory in Texas) affect the U.S. Balance of Payments, FOREX market, and $LRAS$?	1. Balance of Payments: Recorded as a credit (inflow) in the U.S. Capital and Financial Account (CFA Surplus). 2. FOREX Market: Japanese investors must exchange Yen for U.S. Dollars ($D_{\$} \uparrow, S_{\text{¥}} \uparrow$), causing the U.S. Dollar to APPRECIATE and the Yen to depreciate. 3. $AD$ and $LRAS$: The new factory construction increases U.S. physical capital ($I \uparrow, K \uparrow$), shifting U.S. $LRAS$ to the RIGHT (boosting long-run economic growth).
16	What are the four major shifters ('TIPS') of the Foreign Exchange (FOREX) Market, and how does each affect Currency Appreciation/Depreciation and Net Exports ($X_n$)?	• T — Tastes & Preferences / Tourism: Foreign tourists flock to the U.S. $\Rightarrow D_{\$} \uparrow \Rightarrow$ Dollar appreciates. • I — Relative Real Interest Rates ($r$): If U.S. real interest rates rise relative to Europe ($r_{\text{US}} > r_{\text{EU}}$), foreign investors seek higher returns in U.S. bonds $\Rightarrow$ Capital Inflow to U.S. $\Rightarrow D_{\$} \uparrow$ (and $S_{\$} \downarrow$) $\Rightarrow$ U.S. Dollar APPRECIATES. • P — Relative Price Levels (Inflation): Higher U.S. inflation makes U.S. goods uncompetitive $\Rightarrow D_{\$} \downarrow$ and $S_{\$} \uparrow$ (Americans buy cheaper foreign goods) $\Rightarrow$ U.S. Dollar DEPRECIATES. • S — Speculation / Relative Income (GDP): If Europe's Real GDP booms, Europeans buy more U.S. imports $\Rightarrow D_{\$} \uparrow \Rightarrow$ U.S. Dollar APPRECIATES.
17	How is the 'Crowding-Out Effect' of Deficit-Financed Expansionary Fiscal Policy shown on the Loanable Funds Graph?	When the government increases spending ($G \uparrow$) or cuts taxes ($T \downarrow$) without an offsetting policy, the resulting budget deficit can be modeled on the Loanable Funds graph in either of two accepted AP ways: 1. Demand for Loanable Funds shifts RIGHT ($D_{LF} \uparrow$) as the Treasury borrows more; OR 2. Supply of Loanable Funds shifts LEFT ($S_{LF} \downarrow$) as national saving ($S_{\text{private}} + S_{\text{public}}$) decreases. In BOTH representations, the Real Interest Rate ($r$) RISES, which reduces private business Investment ($I \downarrow$) and slows long-run capital formation ($LRAS$).
18	How do Monetary Policy and Fiscal Policy interact when used together (Policy Mixes) to affect Real GDP ($Y$), the Interest Rate ($r$), and Investment ($I$)?	• Expansionary Fiscal ($G \uparrow$) + Expansionary Monetary ($MS \uparrow$) (both fight recession): Real GDP $Y$ definitely increases, while the effect on the Interest Rate is indeterminate ($G \uparrow$ pushes $i$ up via higher $MD$/borrowing, while $MS \uparrow$ pushes $i$ down). • Contractionary Fiscal ($G \downarrow$) + Expansionary Monetary ($MS \uparrow$): Interest Rate $i$ and $r$ definitely FALL, which strongly boosts Private Investment ($I \uparrow$) and long-run economic growth! • Expansionary Fiscal ($G \uparrow$) + Contractionary Monetary ($MS \downarrow$): Interest Rate $i$ and $r$ definitely RISE, severely crowding out Private Investment ($I \downarrow$).
19	Trace the complete chain of effects from a rise in U.S. Real Interest Rates ($r \uparrow$) to U.S. Net Exports ($X_n$) and Aggregate Demand ($AD$).	1. Higher U.S. real interest rate ($r_{\text{US}} \uparrow$) attracts foreign financial investors seeking higher bond yields (Net Capital Inflow $\uparrow$, Capital & Financial Account moves toward Surplus). 2. Foreigners increase the Demand for U.S. Dollars ($D_{\$} \uparrow$) (and U.S. investors supply fewer dollars abroad, $S_{\$} \downarrow$). 3. The U.S. Dollar APPRECIATES in the FOREX market. 4. A stronger dollar makes U.S. exports more expensive to foreigners ($X \downarrow$) and foreign imports cheaper to Americans ($M \uparrow$). 5. U.S. Net Exports FALL ($X_n \downarrow$) (Current Account moves toward Deficit), which shifts U.S. Aggregate Demand to the LEFT ($AD \downarrow$).
20	How does a Protective Tariff or Import Quota imposed by Country A affect the Foreign Exchange Market and Country A's Exports?	When Country A imposes a tariff on imports from Country B: 1. Citizens of Country A buy fewer imports from Country B, so they supply less of Currency A in the FOREX market ($S_A$ shifts LEFT). 2. Currency A APPRECIATES relative to Currency B. 3. Because Currency A is now stronger (and Currency B is weaker), Country A's exports become more expensive to foreigners and FALL ($X \downarrow$)—partially or fully offsetting the drop in imports so Net Exports ($X_n$) do not improve in the long run!
21	What happens to a Commercial Bank's Balance Sheet immediately when a customer withdraws $\$2,000$ in cash from their checking account (with $rr = 10\%$)?	1. Liabilities: Demand Deposits decrease by $\$2,000$. 2. Assets: Total Reserves (vault cash) decrease by $\$2,000$. 3. Required Reserves ($RR$): Decrease by $0.10 \times \$2,000 = \$200$. 4. Excess Reserves ($ER = \Delta TR - \Delta RR$): Decrease by $\$2,000 - \$200 = \mathbf{\$1,800}$ (if the bank had zero excess reserves before the withdrawal, it now has a reserve deficiency of $\$1,800$ and must borrow in the federal funds market, sell bonds, or call in loans).
22	How do you draw and label a Foreign Exchange (FOREX) Market Graph for the U.S. Dollar ($\$) relative to the Euro ($\text{€}$), and why must Demand and Supply in the two currencies move together?	• Market for U.S. Dollars ($\$): - Horizontal Axis: Quantity of U.S. Dollars ($Q_{\$}$). - Vertical Axis: Exchange Rate in Euros per Dollar ($\text{€}/\$) (always put the currency being graphed in the denominator!). • Reciprocal Rule: Whenever foreigners want to buy U.S. goods or U.S. financial assets, they Demand U.S. Dollars ($D_{\$}$ shifts RIGHT) in the Dollar market AND simultaneously Supply their own currency ($S_{\text{€}}$ shifts RIGHT) in the Euro market! Consequently, if the Dollar Appreciates ($\text{€}/\$ \uparrow$), the Euro MUST Depreciate ($\$/\text{€} \downarrow$).
23	Why must you be careful distinguishing between a change in the 'Demand for Money ($MD$)' and a change in the 'Demand for Loanable Funds ($D_{LF}$)' on AP Macro FRQs?	• Demand for Money ($MD$ in the Money Market): The desire to hold wealth as liquid cash/checking deposits rather than bonds; shifts when Price Level ($PL$) or Real GDP ($Y$) changes. • Demand for Loanable Funds ($D_{LF}$ in the Loanable Funds Market): The desire to borrow money to finance business capital investment ($I$) or a government budget deficit; shifts when business confidence, investment tax credits, or government deficits change.
24	How does a decrease in the Required Reserve Ratio ($rr$) affect a bank's Total Reserves, Required Reserves, Excess Reserves, and the Money Multiplier?	When the Central Bank lowers $rr$ (e.g., from $10\%$ to $5\%$): • Total Reserves: DO NOT CHANGE immediately. • Required Reserves ($RR$): DECREASE immediately. • Excess Reserves ($ER$): INCREASE immediately by the exact amount that $RR$ fell. • Money Multiplier ($1/rr$): INCREASES (from $10$ to $20$), allowing banks to create more new loans and expand $M1$.
25	On a commercial bank T-Account (Balance Sheet), distinguish between Assets and Liabilities, and between Required Reserves ($RR$) and Excess Reserves ($ER$).	• Liabilities: Demand Deposits (checkable deposits owed to customers), Savings/Time Deposits, Borrowings from the Fed/other banks, and Bank Capital (Net Worth / Owners' Equity). • Assets: Total Reserves (Vault cash + Reserve deposits at the Fed), Loans to customers, Government Bonds (Treasury securities), and Physical Property. • Reserves Formula: $\text{Total Reserves (TR)} = \text{Required Reserves (RR)} + \text{Excess Reserves (ER)}$, where $\text{RR} = \text{Required Reserve Ratio } (rr) \times \text{Demand Deposits}$. A single bank can safely lend out at most its Excess Reserves ($ER$).
26	Draw the Reserve Market Graph (Policy Rate vs. Quantity of Reserves) and explain how Expansionary vs. Contractionary Monetary Policy works under Ample Reserves.	• Reserve Market Axes: Vertical axis = Policy Rate (Federal Funds Rate); Horizontal axis = Quantity of Bank Reserves. • Demand for Reserves Curve: Has a downward-sloping section (when reserves are limited, capped at the Discount Rate) and a flat horizontal floor (when reserves are ample, anchored at the Interest on Reserves [IOR] rate). • Under Ample Reserves: - Expansionary Monetary Policy (to fight a Recession): The Central Bank LOWERS Interest on Reserves (IOR) $\rightarrow$ Policy Rate falls $\rightarrow$ nominal & real interest rates fall $\rightarrow$ $I$ and interest-sensitive $C$ increase $\rightarrow$ $AD$ shifts RIGHT. - Contractionary Monetary Policy (to fight Inflation): The Central Bank RAISES Interest on Reserves (IOR) $\rightarrow$ Policy Rate rises $\rightarrow$ interest rates rise $\rightarrow$ $I$ and $C$ fall $\rightarrow$ $AD$ shifts LEFT.
27	How does an increase in Expected Inflation ($\pi^e \uparrow$) affect the Loanable Funds Market and the Nominal Interest Rate (the 'Fisher Effect')?	When borrowers and lenders expect higher future inflation ($\pi^e \uparrow$): 1. Borrowers want to borrow more today to repay with cheaper future dollars (Demand for Loanable Funds $D_{LF}$ shifts RIGHT). 2. Lenders are reluctant to lend unless compensated for lost purchasing power (Supply of Loanable Funds $S_{LF}$ shifts LEFT). 3. Result: The Nominal Interest Rate ($i$) rises one-for-one with expected inflation ($i = r + \pi^e$) while the equilibrium quantity of loanable funds and the real interest rate ($r$) remain unchanged.
28	Compare the Money Market Graph and the Loanable Funds Market Graph, including their axes, borrowers/lenders, and shifters.	• Money Market (Short-Run liquidity): Vertical axis = Nominal Interest Rate ($i$); Horizontal axis = Quantity of Money ($M$); $MS$ is vertical (set by Central Bank). • Loanable Funds Market (Long-Run saving & investment): Vertical axis = Real Interest Rate ($r$); Horizontal axis = Quantity of Loanable Funds ($Q_{LF}$). - Demand for Loanable Funds ($D_{LF}$, downward-sloping): Driven by Private Business Borrowing for Investment ($I$) and Government Deficit Borrowing. - Supply of Loanable Funds ($S_{LF}$, upward-sloping): Driven by Private Household Saving, Public Saving (Government Budget Surplus), and Foreign Capital Inflows (Net Capital Inflow).
29	What is the 'Federal Funds Rate,' and how does it differ from the 'Discount Rate' and 'Prime Rate'?	• Federal Funds Rate: The overnight interest rate that commercial banks charge ONE ANOTHER for short-term loans of bank reserves; it is the Federal Reserve's primary target policy rate. • Discount Rate: The interest rate that the Federal Reserve itself charges commercial banks for direct loans from the Fed's 'discount window' (serves as the upper ceiling of the reserve market). • Prime Rate: The benchmark interest rate commercial banks charge their most creditworthy corporate customers.
30	What three real-world leakages make the actual Money Multiplier smaller than the theoretical $\frac{1}{rr}$?	1. Banks hold Excess Reserves: Banks may choose not to lend out 100% of their excess reserves (especially when the Fed pays interest on reserves or during economic uncertainty). 2. Households hold Cash (Currency Drain): Borrowers keep part of their loans as physical currency in their wallets rather than redepositing 100% into checking accounts. 3. Insufficient Borrower Demand: Creditworthy consumers and businesses may be unwilling to take out loans.
31	How does Expansionary Monetary Policy affect the domestic currency's Exchange Rate and Net Exports ($X_n$) through the Interest Rate Channel?	1. Expansionary Monetary Policy lowers domestic nominal and real interest rates ($r \downarrow$). 2. Lower domestic bond yields cause financial capital to flow OUT of the country toward higher-yielding foreign bonds (Capital Outflow, $S_{\text{domestic currency}} \uparrow$ and $D_{\text{domestic currency}} \downarrow$). 3. The domestic currency DEPRECIATES in the FOREX market. 4. A weaker domestic currency makes domestic exports cheaper to foreigners ($X \uparrow$) and imports more expensive ($M \downarrow$). 5. Net Exports INCREASE ($X_n \uparrow$), which reinforces the rightward shift in Aggregate Demand ($AD \uparrow$)!
32	In the Balance of Payments (BOP) accounts, distinguish between the Current Account (CA) and the Capital and Financial Account (CFA), and explain why $\text{CA} + \text{CFA} = 0$.	• Current Account (CA): Records flows of goods, services, income, and transfers: 1. Net Exports ($X - M$, Balance of Trade); 2. Net Investment Income (dividends/interest earned by domestic citizens on foreign assets minus payments to foreigners); 3. Net Unilateral Transfers (foreign aid, remittances sent abroad). • Capital and Financial Account (CFA): Records international purchases and sales of financial and real assets (foreign direct investment [building a factory], portfolio investment in stocks and government bonds). $\text{Net Capital Inflow} = \text{Foreign purchases of domestic assets} - \text{Domestic purchases of foreign assets}$. • Under floating exchange rates, $\text{CA} + \text{CFA} = 0$: a Current Account Deficit (Trade Deficit, $X_n < 0$) must be financed by an equal and opposite Capital & Financial Account Surplus (Net Capital Inflow gt; 0$)!