Study Notes on Money and Inflation

CHAPTER 10: Money and Inflation

What Is Money?

  • Definition of Money:

    • Money is that part of a person’s wealth that can be readily used for transactions. This immediate usability distinguishes money from other assets like real estate or stocks, which require time and effort to convert into a spendable form.

    • Functions of money:

    • Medium of Exchange: Something that is generally accepted as a means of payment for goods and services. This function crucially eliminates the need for a "double coincidence of wants" inherent in barter systems, thereby facilitating trade and specialization in an economy.

    • Store of Value: Allows purchasing power to be carried from one period to the next. However, the effectiveness of money as a store of value can be eroded by inflation, which diminishes its real purchasing power over time.

    • Unit of Account: A standard unit in which prices can be quoted and values of goods, services, and debts can be conveniently compared. This simplifies economic calculations and decision-making.

Barter System

  • Definition of Barter:

    • An economy where goods and services are directly exchanged for other goods and services, without the use of an intermediate medium of exchange like money.

    • Lacks a single medium of exchange, making transactions cumbersome and inefficient.

    • Requires coincidence of wants: Both parties involved in a transaction must simultaneously possess what the other desires and be willing to trade it. This severe limitation restricts the scope of trade and economic specialization.

Commodity Money

  • Definition:

    • Commodity money is composed of commodities such as gold, grain, salt, and cigarettes that have intrinsic value and serve as money. Its value is derived from the commodity itself, rather than from government decree.

  • Examples of Commodity Money:

    • Salt, historically valuable for food preservation and flavor.

    • Cattle, representing wealth and providing food and labor.

    • Furs, prized for warmth and status.

    • Cigarettes used in POW camps during WWII, serving as a medium of exchange due to their widespread demand and divisibility.

    • Huge stones in the Yap Islands, unique for their scarcity and communal recognition of value.

    • Precious metals such as gold and silver, valued for their rarity, malleability, durability, and divisibility.

Early Uses of Precious Metals

  • Historical Context:

    • The use of precious metals like gold and silver for coinage marked a significant advancement due to their inherent characteristics (durability, divisibility, portability, uniformity, and scarcity) making them suitable for money.

    • Gold coins were first used in the 7th century B.C. in Lydia, located in present-day western Turkey, standardizing trade and facilitating more extensive commercial networks.

    • China issued bronze coins with holes in the middle in the 5th century B.C., allowing them to be strung together for larger transactions.

    • Greeks utilized silver coins called tetradrachmas in the 4th century B.C., widely used across the Mediterranean for their consistent weight and purity.

Transition from Coins to Paper Money to Deposits

  • Evolution of Money:

    • Starting in the late 18th and early 19th centuries, paper money became widely used, often supplementing or replacing coins due to its greater convenience, portability, and lower transaction costs, especially for large sums.

    • Modern forms of money, including electronic deposits, have further enhanced efficiency and security for trading goods and services.

  • Definitions:

    • Currency: Money in its physical form, includes both coin and paper money issued by a government or central bank, representing legal tender.

    • Checking Deposit: An account at a financial institution that allows for checks to be written and funds to be withdrawn easily and frequently, often via debit cards or electronic transfers; also referred to as a checkable deposit, it is highly liquid.

Cryptocurrencies

  • Definition:

    • A cryptocurrency is a digital or virtual asset designed to work as a medium of exchange wherein individual coin ownership records are stored in a ledger existing in a computerized database using strong cryptography to secure transaction records, control the creation of additional coins, and verify the transfer of coin ownership, often leveraging blockchain technology. It can be transferred securely between two individuals without knowledge from third parties.

    • Exists purely in digital form and lacks a physical manifestation like paper currency or coins.

  • Advantages:

    • Can serve as an alternative to traditional fiat money, especially in nations with unstable central banks and high or volatile inflation, such as Zimbabwe or Argentina, offering a potentially more stable and decentralized store of value or medium of exchange outside government control.

  • Example:

    • Bitcoin:

    • Value fluctuated significantly; it rose from approximately 600600 in December 2013 to about 19,80019,800 in December 2017, then dropped to about 3,3003,300 in December 2018. This extreme volatility makes it less suitable as a reliable medium of exchange for everyday transactions, although some view it as a digital store of value or a speculative asset.

    • Thus far, Bitcoin has not effectively served as a stable medium of exchange due to its instability and acceptance challenges, being more frequently used as an investment asset.

Measures of the Money Supply

  • Definition of Money Supply:

    • The total amount of monetary assets available in an economy at a specific time, comprising the sum of currency (coin and paper money) and various types of bank deposits. Central banks closely monitor this measure as it impacts inflation, interest rates, and economic growth.

  • Definitions of Money Supply Measures:

    • M1:

    • A narrow measure of money, including the most liquid forms of money readily accessible for spending: currency in circulation, plus checking deposits (demand deposits), and traveler's checks. It represents money that is immediately available for transactions.

    • M2:

    • A broader measure that includes all of M1 plus less liquid forms of money, such as savings deposits, small-denomination time deposits (e.g., Certificates of Deposit under a certain threshold), and money market mutual fund accounts (with limited check-writing capabilities). M2 captures money that can be easily converted into spending money.

  • Further Definitions:

    • Savings Deposit: A deposit account that acquires interest (though often at a lower rate than time deposits) and allows for relatively easy withdrawal of funds, typically without direct check-writing privileges. It is less liquid than a checking deposit but more liquid than a time deposit.

    • Time Deposit: A deposit that earns interest, typically at a higher rate than savings accounts, and requires the depositor to maintain funds for a specified period (maturity date) to avoid losing interest or incurring penalties for early withdrawal. Certificates of Deposit (CDs) are a common example of time deposits.

The Federal Reserve System and Banking

  • Definition of Bank:

    • A bank is a financial institution that acts as an intermediary, directing funds from savers to investors by accepting deposits from individuals and businesses and using these funds to make loans. Banks profit primarily from the interest rate differential between loans and deposits.

  • Role of Banks:

    • Banks act as crucial financial intermediaries, mobilizing savings for productive investment, facilitating payments, and creating liquidity, thereby underpinning economic growth and stability.

  • Federal Reserve System (the Fed):

    • The central bank of the United States, established by Congress in 1913 to provide the nation with a safer, more flexible, and more stable monetary and financial system. It primarily oversees the creation of money and implements monetary policy.

    • Established in 1913, it currently employs over 25,00025,000 individuals across its various branches and offices.

  • Functions of the Fed:

    • Serves as the bank of banks; commercial banks hold deposits at the Fed (reserves), from which the Fed can lend to other banks (discount window lending) and clear checks. It also performs regulatory and supervisory functions over the banking system.

    • The Fed is responsible for conducting monetary policy to achieve maximum employment, stable prices, and moderate long-term interest rates.

  • Board of Governors:

    • Also called the Federal Reserve Board, it is the main governing body of the Fed, consisting of seven members appointed to nonrenewable 1414-year terms by the President of the United States and confirmed by the U.S. Senate. This long, non-renewable term is designed to insulate governors from political pressure.

    • One member is appointed by the President as the chairman for a 44-year renewable term; the current chairman is Jerome Powell, who acts as the public face and chief spokesperson for the Fed.

  • District Federal Reserve Banks:

    • The U.S. is divided into 1212 districts, each housing a Federal Reserve Bank. These banks supervise commercial banks in their districts, provide banking services to financial institutions and the U.S. government, and gather economic intelligence.

    • Each district bank has a president who participates in the Federal Open Market Committee (FOMC), the primary monetary policy-making body of the Fed.

Financial Operations of Banks

  • Definitions:

    • Asset: Something of economic value owned by an individual or entity that is expected to provide future benefit. For a bank, assets include loans, bonds, and reserves.

    • Liability: Something of value owed by an individual or entity to others, representing obligations. For a bank, liabilities primarily consist of deposits made by customers, borrowings, and equity capital.

    • Reserves: Funds commercial banks maintain either in their vaults (vault cash) or as deposits at the Federal Reserve. These are held to meet liquidity needs (customer withdrawals) and to comply with regulatory requirements.

    • Required Reserve Ratios: The percentage of deposits that banks must legally hold as reserves at the Fed, mandated by the central bank to ensure liquidity and control the money supply. When banks hold reserves exceeding this ratio, they are called excess reserves.

  • Loans:

    • Funds allocated by banks to borrowers (individuals, businesses, or governments) for a defined period, in exchange for interest payments and eventual repayment of the principal. Loans are a bank's primary income-generating asset.

  • Bonds:

    • A financial instrument representing a promise by a borrower (e.g., government or corporation) to repay borrowed money (principal) at a specified future time, along with periodic interest payments. Banks often hold bonds as assets for liquidity and investment purposes.

  • Balance Sheet:

    • A financial statement that provides a snapshot of an entity's financial position at a specific point in time, outlining all assets owned by a bank alongside all liabilities owed by it, ensuring that assets always equal liabilities plus equity.

The Quantity Equation of Money

  • Quantity Equation Definition:

    • This fundamental equation in monetary economics relates the total amount of money in circulation to the total value of transactions in an economy. It links price levels and real GDP to the quantity of money and its velocity. It is a tautology, meaning it is true by definition.

      Money Supply×Velocity=GDP Deflator×Real GDP\text{Money Supply} \times \text{Velocity} = \text{GDP Deflator} \times \text{Real GDP}

    • Simplified, it can be expressed as:

      MV=PYMV = PY

      Where MM is the money supply, VV is the velocity of money, PP is the aggregate price level (GDP deflator), and YY is real GDP (output).

  • Velocity of Money:

    • A measure of how often money circulates in the economy, indicating the average number of times a single unit of currency (a dollar) is used for purchases of newly produced goods and services during a specific period. It reflects the speed at which money changes hands.

Relation to Inflation

  • Restatement of Quantity Equation:

    • By taking growth rates of the variables in the quantity equation, the relationship can be expressed in terms of percentage changes, illustrating how an increase in the money supply correlates with inflation:

      Money Growth+Velocity Growth=Inflation+Real GDP Growth\text{Money Growth} + \text{Velocity Growth} = \text{Inflation} + \text{Real GDP Growth}

    • Here, inflation represents the growth rate of a price index (e.g., the GDP deflator). This equation implies that if the velocity of money and real GDP growth are stable in the long run, then money supply growth primarily determines the inflation rate.

Example Calculation of Inflation

  • Scenario:

    • Money supply growth rate = 5 \text{% per annum} .

    • Velocity growth rate = 0 \text{% per annum} (assuming velocity is constant).

    • Real GDP growth rate = 3 \text{% per annum} .

  • Result: Substituting these values into the growth rate form of the quantity equation:

     5 \text{%} + 0 \text{%} = \text{Inflation} + 3 \text{%}

    • Thus:

      \text{Inflation} = 2 \text{% per year}

  • Figure 10.9: Illustrates this relationship in G7 countries from 1973 to 1991, showing a strong correlation between money growth and inflation when velocity is stable.

Hyperinflation

  • Definition:

    • Hyperinflation is characterized by extraordinarily high and accelerating inflation, often defined as monthly inflation rates exceeding 50%50\%
      (an annual rate of over 13,000%)13,000\%) and driven by extremely rapid money supply growth. It leads to a near-total loss of confidence in the currency and severe economic disruption.

  • Historical Example:

  • Germany, 1923:

    • Experienced one of the most severe hyperinflationary episodes, with inflation sometimes exceeding 100%100\%
      per week. This was primarily due to the government's excessive money printing to finance war reparations stipulated by the Treaty of Versailles and cover massive fiscal deficits, leading to the collapse of the mark's value.

  • Visual Aid:

    • Figure 10.10: Depicts the weekly percentage increase in prices during German hyperinflation, vividly showing the exponential rise in the price level.

Other Episodes of Hyperinflation

  • Brazil (1912-1996):

    • Experienced prolonged periods of high inflation, averaging 43.6%43.6\%
      per year over this span, where a good costing 11 in 1912 soared to one quadrillion dollars by 1996, highlighting the devastating effect of sustained monetary erosion.

  • Chile (1970s):

    • Averaged 90%90\%
      inflation yearly, a period marked by political instability and expansionary monetary policies.

  • Zimbabwe (Mid-2000s):

    • Hyperinflation hit an astronomical 89.789.7
      sextillion percent annually, rendering the currency nearly worthless as prices doubled within 2424
      hours. This was a result of the government's extreme money creation to finance expenditures.

  • Venezuela (2019):

    • Saw inflation crushing almost 1010
      million percent annually due to excessive money printing by the government to fund its budget deficits amid a severe economic crisis and collapse of oil production.

Summary

  • Roles of Money:

    • Money fundamentally operates as a medium of exchange, a store of value (though subject to inflation), and a unit of account, making sophisticated economies feasible.

  • Commercial Banks:

    • Function as vital financial intermediaries, channeling funds from savers to borrowers; their checking and savings deposits comprise a significant part of the overall money supply.

  • Central Bank's Control:

    • The central bank (e.g., the Federal Reserve) regulates the money supply and modifies banking system reserves primarily via open market operations, such as buying or selling government bonds.

  • Long-term Implication:

    • Sustained increases in the money supply, particularly those not matched by real economic growth, ultimately lead to rising inflation rates in the long run, as demonstrated by the quantity theory of money and historical hyperinflationary episodes.