AP Macroeconomics, AP exams

Unit 4: Financial Sector

Unit 4 covers money, banking, the money market, and the loanable funds market, along with the monetary policy tools that operate through them. Fractional reserve banking and the money creation process connect bank balance sheets to the money supply. Keeping the money market and the loanable funds market distinct is the unit's most common stumbling block.

Position: 4 of 6 units
Topics covered: 6 topics in this guide

What is covered

Topics inside this unit.

These topics describe the scope students most often review for this part of AP Macroeconomics. Treat them as a study checklist rather than an exhaustive list of what a single exam form can sample.

Financial assets: Stocks, bonds, and loans, the inverse relationship between bond prices and interest rates, and risk and return.
Definition and functions of money: Medium of exchange, unit of account, and store of value, plus the monetary aggregates used to measure money.
Banking and money creation: Fractional reserve banking, bank balance sheets, required and excess reserves, and the money multiplier.
The money market: Money demand and supply, determination of the nominal interest rate, and the effects of policy on that rate.
Monetary policy: Central bank tools, expansionary and contractionary policy, and the transmission from interest rates to output.
The loanable funds market: Saving and investment demand, determination of the real interest rate, and the effects of deficits and capital inflows.

Study tips

How to practice Financial Sector.

Section-specific guidance that follows from how this material is usually tested.

Draw the money market and loanable funds market side by side and label which interest rate each determines.
Work through money creation problems numerically rather than trusting the shortcut formula alone.
For each policy tool, trace the full chain from the tool to interest rates to investment to output.

Where this fits

Unit 4: Financial Sector is 4 of 6 units in the AP Macroeconomics guide. Use the full guide to balance it against everything else you have to review.

Back to the AP Macroeconomics guide Official exam information

Sample Financial Sector questions

Practice questions, not yet expert-reviewed

Original practice questions written to the published framework for this section. No expert has reviewed them, and they are not taken from any official exam. Try each one before you open the answer.

Question 1Foundational
What happens to the market price of a bond that was issued earlier when interest rates on newly issued bonds rise?
1. AIts price falls
2. BIts price rises
3. CIts price is unaffected
4. DIts price rises only if the bond is close to maturity
Show answer
Answer: A. Its price falls
An older bond pays a fixed coupon, so when new bonds offer higher returns buyers will accept the old one only at a discount. Saying the price rises is the tempting distractor because higher interest rates sound like good news for bondholders, but the higher rate is available only on newly issued bonds.
Key insight: Bond prices and interest rates always move in opposite directions, which is why rising rates impose losses on existing bondholders.
Question 2Foundational
If the required reserve ratio is 10 percent, what is the maximum value of the money multiplier?
1. A10
2. B0.1
3. C1.1
4. D100
Show answer
Answer: A. 10
The simple money multiplier is 1 divided by the required reserve ratio, so 1 divided by 0.10 equals 10. The value 0.1 is the tempting distractor because it simply restates the reserve ratio rather than inverting it.
Key insight: This is the maximum, and it shrinks whenever banks hold excess reserves or the public keeps cash out of the banking system.
Question 3Intermediate
A bank receives a new 1,000 dollar cash deposit when the required reserve ratio is 20 percent. If banks lend out all excess reserves and every loan is redeposited in the banking system, what is the maximum total amount of new loans that can be created?
1. A4,000 dollars
2. B5,000 dollars
3. C800 dollars
4. D200 dollars
Show answer
Answer: A. 4,000 dollars
The bank must hold 200 dollars in required reserves, leaving 800 dollars of excess reserves, and that 800 dollars multiplied by the money multiplier of 5 supports 4,000 dollars in total new loans. The 5,000 dollar answer is the tempting distractor because it multiplies the entire deposit by 5, which gives the maximum total of new demand deposits rather than the total of new loans.
Key insight: Loans expand from excess reserves, not from the whole deposit, so always subtract required reserves before multiplying.
Question 4Intermediate
Which market determines the real interest rate through the interaction of national saving and the demand for borrowed funds for investment?
1. AThe loanable funds market
2. BThe money market
3. CThe foreign exchange market
4. DThe market for final goods and services
Show answer
Answer: A. The loanable funds market
The loanable funds market matches savers with borrowers and determines the real interest rate that governs investment decisions. The money market is the tempting distractor because it also produces an interest rate, but it determines the nominal rate through money supply and money demand.
Key insight: Keep the two graphs separate: the money market sets the nominal rate on the quantity of money, and loanable funds sets the real rate on the quantity of funds.
Question 5Advanced
A central bank buys government bonds on the open market. Which sequence correctly traces the effect of that action through the economy?
1. AReserves and the money supply rise, the nominal interest rate falls, investment rises, and aggregate demand rises
2. BReserves and the money supply fall, the nominal interest rate rises, investment falls, and aggregate demand falls
3. CThe money supply rises, the nominal interest rate rises, investment falls, and aggregate demand falls
4. DThe money supply falls, the nominal interest rate falls, investment rises, and aggregate demand rises
Show answer
Answer: A. Reserves and the money supply rise, the nominal interest rate falls, investment rises, and aggregate demand rises
Buying bonds pays sellers with newly created reserves, expanding the money supply, which lowers the nominal interest rate and makes borrowing for investment and durable purchases cheaper. The reversed chain is the tempting distractor because it is exactly right for an open-market sale, so the direction of the very first step decides every step that follows.
Key insight: Buying bonds is expansionary and selling them is contractionary; get that first link right and the rest of the chain follows mechanically.

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Unit 4: Financial Sector