2.4.1a Money and the money supply (A-level only)
Money Works Because It Performs Four Functions and Has the Right Characteristics
Money supply: the total stock of money in circulation in an economy at a given time, including cash and bank deposits, and divided into narrow money and broad money.
- Money is anything widely accepted in payment for goods and services.
- It has four functions: a medium of exchange, a unit of account, a store of value and a standard of deferred payment.
- Money removes the need for a double coincidence of wants found in barter.
- Good money is durable, portable, divisible, acceptable, scarce and uniform.
- The functions explain what money does.
- The characteristics explain why an asset works well as money.
- Barter is inefficient because it needs a double coincidence of wants.
Money Serves as a Medium of Exchange, a Unit of Account, a Store of Value and a Standard of Deferred Payment
- As a medium of exchange, money is accepted in payment for goods.
- As a unit of account, it lets prices be compared on one scale.
- As a store of value, it holds purchasing power over time.
- As a standard of deferred payment, it allows borrowing and lending over time.
- A ten pound note is a medium of exchange accepted across the UK.
- High inflation weakens money's role as a store of value.
- A mortgage relies on money as a standard of deferred payment.
Good Money Is Durable, Portable, Divisible, Acceptable, Scarce and Uniform
- Durability and portability let money be kept and carried easily.
- Divisibility lets it pay for goods of many different values.
- Acceptability and uniformity mean everyone will take it and trust it.
- Scarcity keeps money valuable, so an over-issue erodes its worth.
- Gold long served as money because it was durable, scarce and divisible.
- Cigarettes acted as money in some prisoner-of-war camps.
- Assets that are hard to divide or store make poor money.
An Asset Works as Money Only If It Meets the Functions and Characteristics
- An asset works as money if it meets the functions and characteristics.
- It fails if it cannot store value or is not widely accepted.
- So each feature can be tested against a candidate asset.
- This explains why some assets serve as money and others do not.
Match Each Characteristic to the Function It Supports
- Name the four functions and explain each in turn.
- Link a characteristic to why the asset serves that function.
- Contrast money with the inefficiency of barter.
- Do not confuse the functions of money with its characteristics.
- Functions are what money does; characteristics are why it works.
The Money Supply Splits Into Narrow and Broad Money by Liquidity
- The money supply is the total stock of money in the economy.
- Narrow money is notes, coins and operational deposits used as a medium of exchange.
- Broad money is narrow money plus less-liquid savings and time deposits.
- The distinction rests on how liquid each type of money is.
- Liquidity is how easily an asset can be used to spend.
- Narrow money is the most liquid; broad money is less so.
- Broad money is harder for the authorities to control.
Money Can Be Ranked From Most to Least Liquid
- Cash and current-account deposits can be spent at once.
- Savings and time deposits must first be moved or matured.
- So deposits can be ranked from most to least liquid.
- Narrow money captures the most liquid, broad money a wider set.
- Notes and coins plus current accounts are narrow money.
- A fixed-term savings account is part of broad money.
- The Bank of England publishes monetary aggregates on this basis.
Narrow Money Tracks Spending While Broad Money Reflects Bank Lending
- Narrow money is closest to spending in the economy.
- Broad money reflects the wider lending of the banking system.
- Broad money is harder to control because banks create most of it.
- So the two aggregates give different signals about the economy.
- Most broad money is created by commercial banks when they lend.
- Only a small share of the money supply is physical cash.
- This makes broad money hard for the central bank to control directly.
Classify Deposits by Liquidity Into Narrow or Broad Money
- Place the most liquid items in narrow money.
- Add less-liquid deposits to reach broad money.
- Rank deposits rather than treating them as identical.
- So the classification follows liquidity throughout.
Define Each Aggregate by Its Liquidity
- Define narrow and broad money in terms of liquidity.
- Explain why broad money is harder to control.
- Classify an example deposit into the right aggregate.
- Do not treat all bank deposits as identical.
- Rank them by liquidity into narrow and broad money.
- Name the four functions of money.
- What is the double coincidence of wants?
- Name three desirable characteristics of money.
- What is narrow money and what is broad money?
- Why is broad money harder to control, and on what basis are the two distinguished?
2.4.1b Financial markets, assets and bond prices (A-level only)
The Financial Sector Channels Savings Into Productive Investment
Bond: a financial asset issued by a government or firm to borrow money, which pays the holder a fixed coupon and whose market price varies inversely with market interest rates.
- The financial sector channels savings into investment.
- It lets savers lend to firms and individuals who want to borrow.
- Banks act as intermediaries between savers and borrowers.
- Efficient intermediation supports investment and growth.
- Banks are intermediaries, not just holders of deposits.
- Channelling saving into investment supports growth.
- The sector also manages risk and provides markets.
The Sector Lends, Enables Payments, Provides Markets and Manages Risk
- It facilitates saving and lends to firms and individuals.
- It facilitates the exchange of goods and services through payments.
- It provides forward markets in currencies and commodities.
- It provides a market for equities and helps assess and manage risk.
- A bank lends pooled savings to a firm to fund new machinery.
- A forward currency market lets an exporter fix a future exchange rate.
- The London Stock Exchange provides a market for company shares.
Intermediation Turns Idle Saving Into Productive Investment
- Savers rarely know the firms that need funds.
- Banks pool saving and pass it on as loans.
- This turns idle saving into productive investment.
- More investment can raise the economy's capacity and growth.
- The Harrod-Domar model links more saving to more investment and growth.
- A weak financial sector can starve firms of the funds they need.
- So financial development can support wider economic development.
The Sector's Role Reaches Well Beyond Storing Deposits
- The sector connects those with funds to those who need them.
- It supports spending, investment and the management of risk.
- When it works well, it lifts investment and growth.
- So its role reaches well beyond simply storing deposits.
Stress Intermediation and Its Link to Growth
- List the roles, then focus on channelling saving into investment.
- Link efficient intermediation to investment and growth.
- Where relevant, connect to development via the Harrod-Domar model.
- Do not treat banks as merely holding deposits.
- They are intermediaries that channel funds from savers to borrowers.
The Money, Capital and Foreign Exchange Markets Each Serve a Different Need
- The money market is for short-term borrowing and lending.
- The capital market is for long-term finance through bonds and shares.
- The foreign exchange market is where currencies are traded.
- Firms raise funds through debt or through equity.
- Debt finance is borrowing that must be repaid with interest.
- Equity finance is selling ownership shares in the firm.
- When market interest rates rise, bond prices fall: the two move inversely.
Each Market Serves Short-Term, Long-Term or Currency Finance
- The money market deals in short-term funds and liquidity.
- The capital market raises long-term funds for investment.
- The foreign exchange market lets firms buy and sell currencies.
- Each market serves a different financing need.
- A firm issues shares on the capital market to fund expansion.
- A bank borrows overnight on the money market to meet its needs.
- An importer uses the foreign exchange market to buy euros.
Debt Is Repaid With Interest While Equity Gives Up Ownership
- Debt must be repaid with interest whatever the firm earns.
- Equity gives up a share of ownership and future profit.
- Debt raises fixed costs but keeps ownership intact.
- Equity avoids repayment but dilutes control.
- A bond paying £5 a year on a £100 price yields 5100=5%\dfrac{5}{100}=5\%1005=5%.
- If the price rises to £125, the £5 payment is a yield of 5125=4%\dfrac{5}{125}=4\%1255=4%.
- So a higher bond price means a lower yield.
When Market Interest Rates Rise, Bond Prices Fall
- A bond pays a fixed coupon each year, so its yield depends on its price.
- A government bond also has a maturity date, the point at which the issuer repays the bond's face (par) value to the holder.
- When market interest rates rise, newly issued bonds pay more, so existing bonds become less attractive.
- The price of existing bonds falls until their yield matches the higher market interest rate.
- So when market interest rates rise, bond prices fall: the two move inversely.
- Worked example: a bond pays a fixed coupon of £5 a year. Its price is roughly the coupon divided by the market interest rate (yield).
- If the market interest rate is 5%, the price is £50.05=£100\dfrac{\pounds 5}{0.05} = \pounds 1000.05£5=£100.
- If the market interest rate rises to 10%, buyers will only pay a price at which the £5 gives them 10%: £50.10=£50\dfrac{\pounds 5}{0.10} = \pounds 500.10£5=£50.
- So the rise in interest rates from 5% to 10% halves the bond's price from £100 to £50, showing the inverse relationship.
Keep the Terms Straight
- Match each market to short-term, long-term or currency finance.
- Distinguish debt that is repaid from equity that is owned.
- Remember that when market interest rates rise, bond prices fall.
- Do not confuse debt with equity, or think a rise in market interest rates raises bond prices.
- Debt is repaid with interest; equity is ownership, and bond prices fall when market interest rates rise.
- What is the core role of the financial sector in the wider economy?
- Name the money, capital and foreign exchange markets and say what each does.
- What is the difference between debt and equity finance?
- Why do bond prices fall when market interest rates rise?
- Which market provides long-term finance?