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The banking sector serves as the backbone of a modern economy, acting as the primary intermediary between those who save and those who borrow. To manage the flow of money, ensure financial stability, and control inflation, Central Banks (like the RBI) use a variety of "monetary policy tools." Understanding these concepts is crucial for grasping how the government influences interest rates and the overall availability of credit in the market.

Core Concepts of Banking

1. Bank Rate:

Bank Rate refers to the rate at which RBI provides loan to the commercial banks.

During times of inflation, the central bank (RBI) increases the bank rate to counter inflation. The cost to borrow funds from RBI, for commercial banks increases. As a result, disposable income decreases and it becomes difficult for consumers to borrow money from commercial banks to purchase home, car etc.

During times of deflation, the central bank (RBI) decreases the bank rate to overcome the problem of deflation. The cost to borrow funds from the RBI, for commercial banks decreases. As a result, disposable income increases and it becomes easier for consumers to borrow money from commercial banks to purchase home, car etc.

2. Cash Reserve Ratio (CRR):

The Cash Reserve Ratio (CRR) is the percentage of a commercial bank's total deposits that must be held as cash reserves with the central bank (Reserve Bank of India) and cannot be lent out. The central bank can adjust the CRR, influencing the amount of money banks can lend to the public and businesses.

A higher CRR reduces money available for lending, tightening liquidity and curbing inflation, while a lower CRR increases lending capacity, injecting liquidity to boost economic growth.

3. Statutory Liquidity Ratio (SLR):

Statutory Liquidity Ratio (SLR) is the minimum percentage of deposits that a commercial bank has to maintain in the form of liquid cash, gold or other securities.

  • Cash - Physical currency held by the bank.
  • Gold - Physical gold held in reserves.
  • Government Securities - Bonds and other securities issued by the government.
  • Other Approved Securities - Securities specifically approved by the central bank.

The RBI uses SLR to manage the amount of credit banks can extend to the public. A higher SLR reduces lending capacity, and a lower SLR increases it. 

4. Repo Rate:

The rate at which the Central Bank lends short-term money to commercial banks against government securities. It is the primary tool used to control inflation today. A high repo rate hinders commercial banks from accessing funds from the central bank, ultimately reducing the disposable income in the hands of commercial banks and controlling liquidity in the market.

5. Reverse Repo Rate:

The interest rate at which the Central Bank borrows money from commercial banks. It is used to soak up excess liquidity from the banking system. A high reverse repo rate incentivises commercial banks to park of more of their funds with the central bank. 

6. Open Market Operations (OMO):

This involves the buying and selling of government securities in the open market by the Central Bank to regulate the money supply. Selling securities "sucks" money out of the system, while buying them "injects" cash.