Introduction to Money Supply

Meaning and Definitions

Money supply refers to the total stock of money available in an economy at a particular time. It includes all forms of money that are generally accepted as a means of payment for goods and services and for settling debts. According to Crowther, money is anything that is generally acceptable as a means of exchange and acts as a measure and store of value. Alfred Marshall and D.H. Robertson also emphasize the acceptability of money in transactions and obligations.

• Money Supply: The total stock of domestic means of payment owned by the public (excluding central banks and treasuries).

• Functions of Money:

  • Measure of value

  • Medium of exchange

  • Store of value

  • Standard of deferred payment

  • Transfer of value

Constituents of Money Supply

Traditional and Modern Approaches

The measurement of money supply can be approached in two main ways: traditional (narrow) and modern (broad).

• Traditional Money (Narrow Money, M1):

  • Includes currency (coins and notes) and demand deposits (chequable deposits).

  • Expressed as: Where C = Currency, DD = Demand Deposits.

• Modern Measure (Broad Money):

  • Includes M1 plus close substitutes such as post office savings, time deposits, government securities, and credit.

  • Expressed as: Where a = post office savings, b = time deposits, c = government securities, d = credit.

  • Subdivided into M2, M3, and M4, with decreasing liquidity.

Determinants of Money Supply

Key Factors

• Central Bank (e.g., RBI): Controls monetary policy and the creation of high-powered money.

• Depository Institutions: Commercial banks and other institutions that accept deposits and make loans.

• The Public: Individuals and firms holding money as currency or deposits.

High Powered Money (Reserve Money)

• Composed of currency held by the public and reserves held by banks.

• Expressed as: Where H = High powered money, C = Currency, R = Reserves.

Money Multiplier

The money multiplier shows how an initial deposit leads to a greater final increase in the total money supply. It is influenced by reserve requirements and the public's preference for holding cash versus deposits.

Velocity of Circulation of Money

Concept and Factors

The velocity of money refers to the number of times money changes hands in an economy over a period. It is classified as transaction velocity and income velocity.

• Transaction Velocity: The speed at which money circulates for transactions.

• Factors Influencing Velocity:

  • Volume of production and trade

  • Institutional arrangements

  • Savings behavior

  • Changes in price level

  • Regularity and certainty of income receipts

Cryptocurrency: Concept and Limitations

Definition and Features

Cryptocurrency is a digital or virtual currency secured by cryptography and typically operates on decentralized blockchain technology. It is not issued by central authorities.

• Advantages: Decentralization, lower transaction fees, transparency, financial inclusion, fast transactions, limited supply, accessibility.

• Limitations: High volatility, regulatory uncertainty, security risks, environmental impact, limited adoption, market manipulation, risk of financial loss, dependence on technology.

Conclusion: While cryptocurrencies offer innovation and efficiency, they face significant challenges in volatility, regulation, and scalability.

Demand for Money

Classical Approach (Quantity Theory of Money)

The classical approach, developed by economists like David Hume, J.S. Mill, and Irving Fisher, focuses on the transactions demand for money. The famous equation of exchange is:

Where M = Money supply, V = Velocity of money, P = Price level, T = Transactions.

• Demand for money is proportional to the value of transactions and inversely related to velocity.

• Expressed as:

Neo-Classical Approach (Cambridge Cash Balance Approach)

This approach, developed by Cambridge economists, emphasizes the desire to hold money as a portion of income:

Where k = proportion of income held as money, P = average price, Y = real national income.

Keynesian Approach (Liquidity Preference Theory)

John Maynard Keynes introduced the concept of liquidity preference, explaining that people hold money for three main motives:

• Transactions Motive: For day-to-day expenses, subdivided into income and business motives.

• Precautionary Motive: For unforeseen contingencies and emergencies.

• Speculative Motive: To take advantage of future changes in interest rates and bond prices.

The demand for money for transactions and precautionary motives is mainly determined by income and is interest inelastic:

The speculative demand for money is inversely related to the rate of interest:

Total demand for money:

Liquidity Trap

At very low interest rates, the speculative demand for money becomes perfectly elastic. People prefer to hold cash rather than bonds, making monetary policy less effective.

Keynes' Liquidity Preference Theory of Interest

According to Keynes, the interest rate is determined by the demand for and supply of money. The supply of money is fixed by the central bank and is represented as a vertical line in the money market diagram. The equilibrium interest rate is where the demand for money (liquidity preference) equals the supply of money.

Friedman's Restatement of the Demand for Money

Main Features

• Money is considered an asset, and individuals hold it as part of their wealth.

• Money demand depends on permanent income, not just current income.

• Interest rates, returns on bonds and equities, and expected inflation all influence money demand.

• Friedman argued that the demand for money is stable and predictable, making monetary policy effective for economic stabilization.

Significance and Criticisms

• Revived the quantity theory of money in a modern form (Monetarism).

• Criticized for difficulties in measuring permanent income and instability during financial crises.

Summary Table: Measures of Money Supply

Summary Table: Motives for Holding Money (Keynesian)

Graphical Representations

The following diagrams illustrate the relationship between money supply, demand, and interest rates, including the concept of the liquidity trap and shifts in money demand.

Additional info: The diagrams and tables above are reconstructed and expanded for clarity based on standard economic theory and the provided materials.