Chapter 25 — Front Matter
Purpose and Overview
Every day, billions of economic transactions take place around the world. A student buys lunch. A factory orders raw materials. A government pays its employees. A family takes out a loan to purchase a home. A business invests in new equipment. Each of these transactions requires something that nearly everyone uses but few people stop to think carefully about: money.
Money is so woven into daily life that it can seem like a natural feature of the world, as obvious as gravity. But money is not a natural resource that exists in the ground or grows on trees. Money is a social institution — a set of agreements and practices that societies have developed, over thousands of years, to make exchange faster, more reliable, and more productive.
This chapter introduces money and the financial system. It asks: What is money, and why does it matter? What do banks actually do? How do financial institutions connect savers with borrowers? What makes a financial system work well, and what makes it fragile?
Opening Question
By the end of this chapter, you will understand that money is not simply wealth — it is a tool that makes the creation of wealth possible. You will understand how banks intermediate between people who have funds and people who need them. You will understand credit, risk, and interest. And you will be prepared to study how central banks and monetary policy shape the macroeconomy — which is the subject of Chapter 26.
10Sections
10Objectives
26Key Terms
30Chapters in Course
Learning Objectives
- 1Explain what money is by describing the functions it performs rather than the material it is made of.
- 2Distinguish medium of exchange, unit of account, and store of value, and identify each in real scenarios.
- 3Compare commodity money, representative money, and fiat money.
- 4Describe M1 and M2 as introductory measures of the money supply.
- 5Explain how banks use deposits and loans, and why deposits are liabilities while loans are assets.
- 6Calculate simple interest and explain why lenders charge it.
- 7Explain fractional reserve banking and calculate the simple money multiplier.
- 8Describe financial intermediation and the economic functions it performs.
- 9Identify types of financial risk and explain how institutions manage them.
- 10Describe the major financial institutions in the economy and the role of deposit insurance.
Sections 25.1 – 25.4
What Money Is and What It Does
Functions of Money · Commodity and Fiat Money · Measuring the Money Supply
Section 25.1
What Money Does
When most people hear the word money, they think of coins and paper bills. But to an economist, money is defined not by its physical form but by what it does — by the economic functions it performs.
To understand what money does, imagine an economy without it. In a pure barter economy, people trade goods and services directly for other goods and services. Barter can work, but it runs into a serious problem: the double coincidence of wants. For a barter trade to happen, each person must want exactly what the other person is offering, at the same moment. As an economy grows more complex, barter becomes increasingly impractical.
Money solves the double coincidence of wants. A seller accepts money for goods, then uses that money to buy whatever they need from someone else entirely. Money breaks the chain of direct exchange into flexible, indirect exchange.
| Function of Money | Description | Example |
|---|
| Medium of Exchange | Something widely accepted in payment for goods and services | Handing a cashier a bill for groceries |
| Unit of Account | A common measuring stick used to express the value of goods, services, and debts | Comparing two cars priced at $28,000 and $35,000 |
| Store of Value | A way to hold purchasing power over time | Saving $200 to spend at next month's sale |
Liquidity
Liquidity is how quickly and easily an asset can be converted into cash or used to make a purchase without significant loss of value. Money is the most liquid of all assets — other assets such as real estate, stocks, and gold may store value well but cannot be spent instantly.
- In your own words, explain the double coincidence of wants. Why does money solve this problem?
- Name the three functions of money and give one original example of each.
- A student says, "Money is whatever is made of valuable metal." Write a two-sentence response that corrects or expands this view.
- Explain why liquidity matters for something to function as money.
Section 25.2
Medium of Exchange, Unit of Account, and Store of Value
For something to function effectively as a medium of exchange, it should be widely accepted, portable, divisible, durable, recognizable, and difficult to counterfeit. Throughout history, many different things have served this role — shells, beads, salt, livestock, metal coins, paper notes, and now digital entries in computer records. What matters is not the material but whether people trust and accept it.
For money to work well as a unit of account, the value of the currency unit must be reasonably stable over time. Severe inflation destroys this function: in economies with hyperinflation, people sometimes abandon the currency for a more stable foreign currency or for barter.
For money to preserve value as a store of value, it must maintain purchasing power over time. Inflation — even moderate, steady inflation — gradually erodes this function, which is why people often hold other assets such as savings accounts, bonds, or real estate rather than keeping all wealth in cash.
Tradeoffs Among the Functions
Ideal money needs to be liquid (a good medium of exchange), stable in value (a good unit of account), and durable (a good store of value). Real monetary systems balance these demands with varying success — and severe inflation can cause money to fail at several functions simultaneously.
Common Misconception
Students sometimes assume that any rise in a single price is "inflation." Inflation specifically refers to a sustained rise in the overall price level, not just one good becoming more expensive. This distinction connects directly to Chapter 22.
- List three physical requirements something must meet to serve well as a medium of exchange. Explain why each matters.
- Explain why severe inflation undermines money's function as a unit of account.
- Give an example of an asset that is a poor medium of exchange but a strong store of value. Explain your reasoning.
Section 25.3
Commodity Money and Fiat Money
Commodity money is money whose value comes from the material it is made of — gold, silver, or copper coins are classic examples. These forms of money had intrinsic value: even if a society stopped using gold coins as currency, the gold would still be worth something. Commodity money has advantages, since its supply cannot be inflated arbitrarily, but it is heavy, inconvenient, and its supply is tied to how much of the commodity is mined.
An important historical intermediate form is representative money: paper certificates redeemable for a fixed amount of a commodity held in reserve, as under a gold standard.
Fiat money has value because the government declares it legal tender and because people trust and accept it — not because it is made of anything intrinsically valuable. Modern currencies, including the U.S. dollar, the euro, and the yen, are all fiat money. The strength of fiat money is its flexibility; its weakness is that it requires institutional trust.
| Type | Example | Source of Value | Advantages | Disadvantages |
|---|
| Commodity money | Gold coins | Intrinsic (the metal itself) | Trusted; supply limited | Heavy; inflexible supply |
| Representative money | Gold-backed banknotes | Redemption claim on a commodity | Lighter than metal; supply linked to commodity | Supply constrained by commodity reserves |
| Fiat money | U.S. dollar bills | Government declaration + social trust | Flexible supply; convenient | Requires institutional trust; inflation risk |
Key Concept
The value of fiat money rests on trust and institutional credibility, not on the physical material it is made from.
- Classify: a $20 paper bill
- Classify: a one-ounce silver coin worth its weight in silver
- Classify: a banknote redeemable for gold at a fixed rate
- Explain one disadvantage of commodity money
- Explain one disadvantage of fiat money
- Explain why trust is essential to fiat money
Section 25.4
Money Supply at an Introductory Level
Economists and policymakers need to measure how much money is circulating in an economy. The most obvious form of money is currency — paper bills and metal coins held by the public — but currency is only part of the money supply. Checking accounts (demand deposits) function like money because balances can be used immediately to pay for goods and services.
M1 is the narrowest measure, including currency, demand deposits, and other highly liquid deposits. M2 is a broader measure, including everything in M1 plus savings account balances, small time deposits, and retail money market mutual fund shares.
Note for Students
You do not need to memorize the precise technical definitions of M1 and M2 for this course. The key concept is that economists measure money along a spectrum from most liquid (currency) to somewhat less liquid (savings accounts), because liquidity determines how quickly money can function in transactions.
- Explain why a checking account balance counts as money even though it is not physical currency.
- Place currency, M1, and M2 in order from narrowest to broadest, and explain what is added at each step.
- Why might central banks care about the size and growth rate of the money supply?
Sections 25.5 – 25.7
Banks, Loans, and Reserves
Deposits and Liabilities · Loans and Interest · Fractional Reserve Banking
Section 25.5
Banks and Deposits
A bank is a financial institution that accepts deposits from savers and uses those funds to make loans to borrowers. Banks sit in the middle of the financial system, connecting savers — people with funds they are not currently using — and borrowers, who need funds for spending or investment.
When you deposit money into a checking or savings account, you are lending money to the bank. Your deposit appears on the bank's balance sheet as a liability — an obligation the bank owes to you, since you can demand it back. What the bank owns — its assets — are the loans it has made, the securities it holds, and the reserves it keeps.
| Type of Deposit | Liquidity | Typical Interest |
|---|
| Demand deposits (checking) | Withdrawable at any time | None or very low |
| Savings accounts | Withdrawable, sometimes with restrictions | Moderate, variable |
| Time deposits (CDs) | Locked for a set period | Higher, fixed |
Common Misconception
Students sometimes assume a deposit is the bank's asset, since the bank is "holding" the money. In fact, a deposit is the bank's liability: the bank owes that money back to the depositor on demand.
- Explain why a deposit is a liability for the bank rather than an asset.
- Compare checking accounts, savings accounts, and time deposits in terms of liquidity and interest.
- From a depositor's perspective, list three benefits of placing money in a bank rather than holding cash.
Section 25.6
Loans and Interest
A loan is an agreement in which a lender provides funds to a borrower, who agrees to repay the principal plus interest — a fee charged for the use of the funds, typically expressed as a percentage of the principal per year.
Banks charge interest for several reasons: time preference, inflation risk, default risk, and opportunity cost. Banks earn profit in part from the interest rate spread — the difference between the rate charged to borrowers and the rate paid to depositors.
Example 25.6.1
Calculating simple interest
- SituationYou borrow $10,000 from a bank at an annual interest rate of 5%.
- InterestInterest = $10,000 × 0.05 = $500
- Total owedTotal owed = $10,000 + $500 = $10,500
Key takeaway: Interest is the price of using someone else's money for a period of time.
Collateral and Creditworthiness
Banks assess creditworthiness — a borrower's ability and willingness to repay — using income, credit history, collateral, and debt-to-income ratio. Collateral is an asset the lender can seize if the borrower defaults, such as a house securing a mortgage.
- $5,000 at 6% annual interest
- $20,000 at 4% annual interest
- $500 at 15% annual interest
- $150,000 at 3.5% annual interest
- A bank pays 1.5% on deposits and charges 7% on loans. Find the spread.
- Explain one reason why banks charge interest on loans.
Section 25.7
Reserves
Reserves are the portion of deposits banks keep on hand rather than lending out, either as vault cash or as deposits at the central bank. Modern banks practice fractional reserve banking: they keep only a fraction of deposits in reserve and lend out the rest.
This process, called the money multiplier, allows the banking system as a whole to create more total deposits than the original deposit alone, because the same funds cycle through multiple rounds of lending and re-depositing.
Round 1: Deposit $1,000 → Reserve $100 (10%) → Loan $900
Round 2: Deposit $900 → Reserve $90 (10%) → Loan $810
Round 3: Deposit $810 → Reserve $81 (10%) → Loan $729
...
Total new deposits supported = Initial deposit × (1 ÷ reserve ratio)
= $1,000 × (1 ÷ 0.10) = $10,000
Bank Runs
Fractional reserve banking works because, on an ordinary day, only a small fraction of depositors withdraw funds simultaneously. But if depositors lose confidence and all try to withdraw at once — a bank run — even a healthy bank can be overwhelmed, because the funds have already been lent out.
- A bank receives an $8,000 deposit with a 25% reserve requirement. Find required reserves, the amount available to lend, the simple money multiplier, and the maximum possible increase in total deposits.
- Explain the difference between required reserves and excess reserves.
- Explain why a bank run can threaten even a financially sound bank.
Sections 25.8 – 25.10
Intermediation, Credit, and the Financial System
Financial Intermediation · Credit and Risk · Institutions and Deposit Insurance
Section 25.8
Financial Intermediation
Financial intermediation is the process by which financial institutions channel funds from savers to borrowers. Without intermediaries, savers and borrowers would need to find each other directly and negotiate terms on their own — impractical for most individuals and small businesses.
Financial intermediaries make borrowing and lending efficient by pooling funds, reducing information costs, managing the maturity mismatch between short-term deposits and long-term loans, and diversifying risk across many borrowers.
SAVERS ───deposits───▶ FINANCIAL INTERMEDIARIES ───loans───▶ BORROWERS
(households, (banks, credit unions, etc.) (households,
businesses, businesses,
governments) governments)
SAVERS ◀───interest─── FINANCIAL INTERMEDIARIES ◀───interest─── BORROWERS
Real-World Connection
Research has found that countries with deeper, more efficient financial systems — more banks, better credit markets, stronger property rights — tend to grow faster and have higher living standards, a theme developed further in Chapter 28.
- List the four functions of financial intermediation described in this section and give an original example of each.
- Explain the maturity mismatch problem in your own words.
- Why is direct finance impractical for most individual savers and small businesses?
Section 25.9
Credit and Risk
Credit is the ability to borrow — to receive goods, services, or money now in exchange for a promise to pay later. Credit allows economic activity to happen sooner than it otherwise could, which is one reason well-functioning credit markets are associated with economic growth.
Financial risk refers to the uncertainty surrounding future returns. Important types include default risk, interest rate risk, liquidity risk, and systemic risk — the risk that problems in one institution spread throughout the financial system.
A fundamental principle of finance is that higher risk is associated with higher expected return: riskier borrowers pay higher interest rates to compensate lenders for the added uncertainty.
| Type of Risk | Description |
|---|
| Default risk | The risk a borrower fails to repay a loan |
| Interest rate risk | The risk that rate changes affect the value of assets and liabilities |
| Liquidity risk | The risk of being unable to convert assets to cash quickly enough |
| Systemic risk | The risk that one institution's failure spreads through the system |
- Rank these borrowers from lowest to highest expected interest rate, with reasoning: a government bond issuer, a startup with no track record, a homeowner with excellent credit and collateral, a consumer with a history of late payments and no collateral.
- Explain why diversification reduces a bank's overall risk.
- Distinguish systemic risk from default risk using an original example.
Section 25.10
Financial Institutions in the Economy
Commercial banks are the most familiar financial institutions, accepting deposits and making loans to households and businesses. Credit unions are member-owned, nonprofit cooperatives offering similar services. Investment banks help corporations and governments raise capital and advise on mergers, rather than taking retail deposits. Mutual funds pool investor money into diversified portfolios, while insurance companies and pension funds are major long-term institutional investors.
The shadow banking system includes intermediaries that perform bank-like functions without traditional bank charters or regulation, which proved a source of significant risk during the 2007–2008 global financial crisis.
Deposit insurance — such as FDIC coverage in the United States — guarantees deposits up to a set limit, preventing bank runs by removing depositors' incentive to withdraw at the first sign of trouble. However, deposit insurance also creates moral hazard, reducing depositors' incentive to monitor whether a bank is taking excessive risks.
Key Concept
Deposit insurance protects individual depositors and prevents bank runs, but creates moral hazard by reducing depositors' incentive to monitor bank behavior. This is why regulation accompanies insurance.
- Match each institution to its primary function: commercial bank, investment bank, credit union, insurance company, mutual fund.
- Explain what the shadow banking system is and why it can be risky.
- Explain moral hazard as it relates to deposit insurance, and why regulation typically accompanies insurance.
Chapter 25 — Back Matter
Chapter Summary
- Sec 25.1Money is defined by its functions, not its material. Money solves the double coincidence of wants that limits barter, serving as a medium of exchange, unit of account, and store of value. Liquidity is the defining characteristic of money.
- Sec 25.2Each function of money has requirements: wide acceptance and portability for medium of exchange, stability for unit of account, and durability of purchasing power for store of value. Severe inflation undermines several functions at once.
- Sec 25.3Commodity money derives value from its material; fiat money derives value from government declaration and social trust. Representative money is a historical bridge between the two.
- Sec 25.4M1 is a narrow measure of the money supply (currency plus demand deposits); M2 is broader, adding savings deposits and similar near-money assets.
- Sec 25.5Banks connect savers and borrowers. Deposits are bank liabilities because the bank owes that money back to depositors on demand.
- Sec 25.6Loans are bank assets. Interest is the price of borrowing, reflecting time preference, inflation risk, default risk, and opportunity cost. Banks profit from the interest rate spread.
- Sec 25.7Fractional reserve banking allows banks to lend most deposits while holding only a fraction as reserves, expanding the money supply through the money multiplier — but creating vulnerability to bank runs.
- Sec 25.8Financial intermediation pools funds, reduces information costs, bridges maturity mismatches, and diversifies risk — functions that connect savings to investment and growth.
- Sec 25.9Credit allows economic activity to happen sooner. Risk — default, interest rate, liquidity, and systemic — explains why riskier borrowers face higher interest rates.
- Sec 25.10The financial system includes commercial banks, credit unions, investment banks, mutual funds, insurance companies, pension funds, and shadow banking entities. Deposit insurance stabilizes the system but introduces moral hazard.
Key Terms Review
money
Anything widely accepted as a medium of exchange, unit of account, and store of value.
medium of exchange
Something accepted in payment for goods and services, eliminating the need for barter's double coincidence of wants.
unit of account
A common measuring standard used to express prices and values.
store of value
An asset that preserves purchasing power over time.
liquidity
How quickly and easily an asset can be converted into spending without significant loss of value.
barter
The direct exchange of goods and services without money.
double coincidence of wants
The requirement in a barter economy that each party must want exactly what the other offers.
commodity money
Money whose value comes from the material it is made of.
fiat money
Money that has value because of government declaration and social trust, not intrinsic material value.
M1
A narrow measure of the money supply including currency and demand deposits.
M2
A broader measure of the money supply including M1 plus savings accounts and other near-money assets.
bank
A financial institution that accepts deposits and makes loans.
deposit
Funds placed in a bank account; a liability of the bank.
reserves
Funds banks hold rather than lend out, kept as vault cash or deposits at the central bank.
fractional reserve banking
A banking system in which banks hold only a fraction of deposits as reserves and lend out the rest.
required reserves
The minimum reserves a bank must hold, as set by regulatory requirements.
excess reserves
Reserves held above the required minimum.
bank run
A situation in which many depositors simultaneously attempt to withdraw funds, potentially overwhelming even a sound bank.
financial intermediation
The process by which financial institutions channel funds from savers to borrowers.
maturity mismatch
The difference between the short-term nature of bank deposits and the long-term nature of bank loans.
loan
An agreement in which a lender provides funds to a borrower in exchange for repayment of principal plus interest.
interest
The price of borrowing money, typically expressed as a percentage of principal per year.
collateral
An asset pledged by a borrower that the lender can seize if the borrower fails to repay.
creditworthiness
A borrower's ability and willingness to repay a loan.
credit
The ability to borrow — to receive resources now in exchange for a promise to repay later.
systemic risk
The risk that problems in one financial institution spread throughout the financial system.
deposit insurance
A government guarantee of bank deposits up to a specified limit, designed to prevent bank runs.
moral hazard
The tendency for people to take greater risks when insulated from the consequences of those risks.
shadow banking system
Financial intermediaries that perform bank-like functions without traditional bank charters or regulation.
Worked Example Review
Example Review 1
Reserves and the money multiplier
- SituationA bank receives a new deposit of $5,000. The required reserve ratio is 20%.
- Required reserves$5,000 × 0.20 = $1,000
- Available to lend$5,000 − $1,000 = $4,000
- Multiplier1 ÷ 0.20 = 5
- Max new deposits$5,000 × 5 = $25,000
Key takeaway: A lower reserve ratio produces a larger multiplier and greater potential expansion of deposits.
Example Review 2
Simple interest on a loan
- SituationMarta borrows $12,000 at an annual interest rate of 8% for one year.
- Interest$12,000 × 0.08 = $960
- Total owed$12,000 + $960 = $12,960
Key takeaway: From the borrower's view, $960 is the cost of using $12,000 for one year; from the bank's view, it is interest income.
Data Review
| Measure | What It Includes | Approximate Relative Size |
|---|
| Currency | Coins and paper bills in circulation | Smallest component of M1 |
| M1 | Currency + demand deposits + other liquid accounts | Narrower measure |
| M2 | M1 + savings deposits + small time deposits + retail money market funds | Broader; typically 4–5× M1 |
Key observation: M2 is much larger than currency alone because most money in a modern economy exists as bank deposits — entries in computers — rather than physical cash.
Concept Check
- What problem does money solve that barter cannot solve efficiently?
- Name the three functions of money and give one example of each.
- What is the difference between commodity money and fiat money?
- What does it mean for an asset to be liquid?
- Why are bank deposits a liability on the bank's balance sheet rather than an asset?
- What is fractional reserve banking, and why does it allow banks to expand the money supply?
- What is financial intermediation, and why does it matter for the economy?
- Why do riskier borrowers typically pay higher interest rates?
- What is deposit insurance, and what problem does it solve?
- What is moral hazard in the context of banking, and why does it arise from deposit insurance?
Practice Questions
- A farmer has surplus grain and wants a new plow; a blacksmith has a spare plow but wants lumber, not grain. (a) What economic problem does this illustrate? (b) How does money solve it?
- Classify each as a function of money and explain: (a) a city posts taxes owed in dollars; (b) a customer pays for dinner with a debit card; (c) a retiree keeps $20,000 in savings for emergencies; (d) a contractor quotes a renovation price in dollars.
- Identify commodity money versus fiat money: (a) a gold coin worth $50 in metal markets; (b) a $50 paper bill issued by a central bank; (c) a silver coin worth $30 as metal.
- Rank from most to least liquid, with explanation: checking account balance; a house; a one-year certificate of deposit; cash in a wallet; shares in a stock mutual fund.
- A bank has: vault cash reserves $50,000; central bank reserves $30,000; loans outstanding $700,000; securities $120,000; checking deposits $600,000; savings deposits $250,000; equity $50,000. (a) Total assets? (b) Total liabilities? (c) Does it balance? (d) Total reserves?
- A bank receives an $8,000 deposit with a 25% reserve requirement. Find: (a) required reserves; (b) amount available to lend; (c) the simple money multiplier; (d) the potential increase in total deposits.
- Bank A receives a $2,000 deposit and holds 10% in reserve. (a) How much does Bank A lend? (b) That amount is deposited in Bank B — how much does Bank B lend? (c) That amount is deposited in Bank C — how much does Bank C lend? (d) What pattern do you observe?
- Calculate interest owed after one year: (a) $5,000 at 6%; (b) $20,000 at 4%; (c) $500 at 15%; (d) $150,000 at 3.5%.
- A bank pays depositors 1.5% and charges borrowers 7%. (a) Find the spread. (b) Interest paid on a $50,000 deposit after one year? (c) Interest collected on a $40,000 loan at 7% after one year? (d) Net interest income from this pair?
- Rank from lowest to highest expected interest rate, with reasoning: (a) a government bond; (b) a startup with no track record; (c) a homeowner with excellent credit and collateral; (d) a consumer with late payments and no collateral.
- Explain the maturity mismatch problem: what it is, how it arises, and why it creates risk.
- A small town has 500 residents who each want to save $1,000; a factory needs to borrow $400,000. (a) How could the factory raise this without an intermediary, and what problems arise? (b) How does a bank solve them? (c) What three functions of intermediation are illustrated?
- Identify the institution type — commercial bank, investment bank, credit union, insurance company, or mutual fund — for each: (a) pools small investors into a diversified stock portfolio; (b) accepts deposits from members sharing a common employer; (c) helps a corporation issue bonds; (d) collects premiums and holds reserves for future claims; (e) accepts checking deposits and makes mortgage loans.
- False rumors spread that a bank is in trouble, and hundreds of depositors rush to withdraw funds on the same day. (a) Why might the bank be unable to repay everyone immediately even if it is sound? (b) How does this show fractional reserve banking's vulnerability? (c) How does deposit insurance help? (d) What moral hazard concern remains?
- A loan officer compares two applicants: one with stable high income, long employment history, excellent credit, and collateral; another with lower, newer self-employment income, fair credit, and no collateral. (a) Who poses greater default risk, and why? (b) Who should receive a higher interest rate? (c) What principle of risk and return does this illustrate?
Economic Reasoning Questions
- During severe hyperinflation, workers demanded payment twice a day and rushed to spend money before its value fell. Using money's three functions, explain which functions the currency still performed and which it failed to perform, and what you would expect people to use instead.
- What is the opportunity cost of holding cash at home rather than depositing it in a bank? Why might someone still keep some cash despite this cost? How does this involve a tradeoff between liquidity and return?
- Explain how financial intermediation connects to investment and growth. What might happen in an economy where people distrust banks and keep savings in cash? What institutional conditions encourage trust in banking?
- Suppose a central bank raises the required reserve ratio from 10% to 20%. How does this affect lending capacity, the money multiplier, and the total money supply? Under what conditions might a central bank want to do this?
Policy Scenario Questions
Scenario: Designing a Banking System in Verantia
Policymakers in a small nation are debating: Option A requires 100% reserves (no lending at all); Option B requires 10% reserves with deposit insurance; Option C requires no minimum reserves and no deposit insurance.
- For each option, identify the main tradeoffs — what is gained and what is sacrificed.
- Under Option A, could banks lend at all? What would happen to credit and investment?
- Under Option C, what risks arise for depositors and for the broader economy?
- Which option would likely produce the most efficient financial system? What reasoning supports your answer?
- Could weak institutions justify a higher reserve requirement even if it limits credit? Explain.
- What does this scenario reveal about the relationship between risk, credit, and institutional design?
Error Analysis
Each statement below contains an error. Identify and explain the error, then state the correct understanding.
- "Gold is money because the government says it is."
- "When you deposit $1,000 in a bank, the bank now has $1,000 as an asset and $0 in liabilities from your deposit."
- "Fractional reserve banking means banks can lend out more money than they receive in deposits — so they are creating money from nothing."
- "A lower required reserve ratio means banks can lend less, so the money supply shrinks."
- "Because deposits are insured by the government, there is no risk in banking at all."
- "The interest rate on a loan is simply the bank's profit."
- "M1 includes everything in M2 plus additional near-money assets."
Real-World Applications
- Research a currency that collapsed rapidly (such as Zimbabwe in the 2000s, the Weimar mark in 1923, or the Venezuelan bolívar in the 2010s). What happened to each of money's three functions? What did people use instead? What does this teach about what gives money value?
- Look up a local bank or credit union. What is its savings interest rate? Its mortgage rate? Its approximate spread? Does it advertise deposit insurance?
- Research credit scores. What factors affect them? How does a lower score affect interest rates paid? What economic concept explains this?
- Research microfinance institutions that make very small loans in lower-income countries. How does microfinance serve financial intermediation? What risks might these institutions face that traditional banks in wealthy countries face less acutely?
Mixed Review
- (From Chapter 3) A bank considers a $10,000 loan at 6% interest; its cost of funds is 2%, and processing costs $200. What is the marginal benefit, the marginal cost, and should the bank make the loan?
- (From Chapter 16) Explain how a large bank's failure can create a negative externality, and how this justifies bank regulation.
- (From Chapter 17) A borrower knows more about their finances than the bank does. What information problem does this create, and how do banks address it?
- (From Chapter 5) How is financial intermediation similar to specialization and gains from trade? What does each party specialize in?
- (From Chapter 19) Low-income households often face higher interest rates and less bank access. What economic factors explain this, and what tradeoffs come with possible policy responses?
Chapter 25 Checkpoint
Chapter 25 Checkpoint
Money, Banking, and Financial Institutions — Complete without assistance; assesses all key skills and concepts from Chapter 25
Section 1 — Vocabulary and Concepts
- Define money in terms of its functions rather than its material form.
- Explain the double coincidence of wants and how money resolves it.
- Distinguish commodity money from fiat money, with one example of each.
- Explain why a deposit is a bank's liability and a loan is a bank's asset.
Section 2 — Calculations
- A bank receives a $6,000 deposit with a 15% required reserve ratio. Find required reserves, funds available to lend, the simple money multiplier, and the maximum possible increase in total deposits.
- A borrower takes a $9,000 loan at 7% annual interest. Find the interest owed after one year and the total amount owed.
Section 3 — Analysis
- Explain financial intermediation and identify at least three economic functions it performs.
- A student says, "If my deposits are insured, the bank has no reason to be careful with my money." Evaluate this claim using the concept of moral hazard.
Section 4 — Applied Practice
- Identify a financial institution you or your family use. Describe what type it is, what services it provides, and how it functions as a financial intermediary.
- Describe a scenario in which fractional reserve banking benefits the economy, and a scenario in which it creates risk.
Section 5 — Policy
- Using concepts from this chapter, explain why deposit insurance is generally paired with bank regulation rather than offered alone.
Looking Ahead
Chapter 26: Central Banking and Monetary Policy
Chapter 25 introduced money, banks, and financial institutions — the foundation of the financial system. You now understand that banks create money through lending, that interest is the price of borrowing, and that financial intermediation channels savings into investment. Chapter 26 builds directly on this foundation to examine central banking and monetary policy: how central banks oversee the banking system, act as lenders of last resort, use open market operations to influence the money supply and interest rates, and navigate the tradeoff between controlling inflation and supporting employment.
MGU Library Connection
- Money and Banking Guide — MGU Library reference companion
- Monetary Policy Guide — continues directly into Chapter 26
- Chapter 22: Inflation, Price Indexes, and Cost of Living — connects to money as a store of value
- Chapter 28: Economic Growth, Productivity, and Living Standards — develops the link between finance and growth
- Appendix I: Money, Banking, and Policy Reference
- Appendix E: Formula and Calculation Reference — interest, reserves, and multiplier formulas
- Economics Vocabulary Study Guide — Appendix K of this textbook