Key Points

A barter system is an economy without money where goods are exchanged directly for other goods. Its main drawback is the need for a 'double coincidence of wants', where two individuals must each have a surplus of the good the other person desires.

Money serves three main functions. It acts as a medium of exchange, a convenient unit of account to measure the value of goods, and a store of value to hold wealth for future use.

People desire to hold money for two primary reasons. The transaction motive is for conducting day-to-day transactions, while the speculative motive involves holding money as an asset in anticipation of changes in interest rates and bond prices.

Money supply is the total stock of money in circulation. The RBI measures it as M1, M2, M3, and M4, which are categorized into narrow money (M1, M2) and broad money (M3, M4) based on decreasing liquidity.

Money is created by a system of two types of institutions. The central bank (like the RBI) issues currency, and the commercial banking system creates credit through deposits and loans.

The RBI, established in 1935, is India's central bank. Its key functions include issuing currency, controlling money supply, acting as a banker to the government, and being the lender of last resort to commercial banks.

Commercial banks accept deposits from the public and lend these funds to borrowers. They earn profit from the 'spread', which is the difference between the interest rate charged on loans and the interest rate paid on deposits.

Banks create money by lending a portion of the deposits they receive, while keeping a fraction as reserves. When a loan is made, a new deposit is created, thus increasing the total money supply in the economy.

The money multiplier indicates the maximum amount of money that can be created by the banking system for a given amount of reserves. Its value is determined by the reserve ratio, with the formula being: Money Multiplier = 1 / Cash Reserve Ratio.

The Central Bank limits credit creation using reserve requirements. The Cash Reserve Ratio (CRR) is the percentage of deposits banks must keep with the RBI, and the Statutory Liquidity Ratio (SLR) is the percentage they must maintain in liquid assets.

The RBI uses quantitative and qualitative tools to control money supply. Quantitative tools include the Bank Rate, Open Market Operations, and changes in CRR and SLR.

OMO refers to the buying and selling of government bonds by the RBI. When the RBI buys bonds, it injects money into the system, increasing money supply; selling bonds withdraws money and decreases the supply.

The Repo Rate is the interest rate at which the RBI lends to commercial banks for short periods. The Reverse Repo Rate is the interest rate at which the RBI borrows from commercial banks. These are key tools for managing short-term liquidity.

Fiat money is currency that has value because the government has ordered it to be accepted as a medium of payment, not because of its intrinsic value. It is also a 'legal tender', meaning it cannot be legally refused in the settlement of a debt.

This is a crucial function of the central bank (RBI). It means the RBI is ready to lend to commercial banks when they face a liquidity crisis and cannot get funds from other sources, thus ensuring stability in the banking system.