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Reserve Bank of India (RBI): Functions and Monetary Policy Tools

Updated 11 October 2026 · Fact-checked

The Reserve Bank of India (RBI) is India's central bank. It issues currency notes (except one-rupee notes), acts as banker to the government and to banks, regulates banks, manages foreign exchange, and controls money and credit through tools like repo rate, reverse repo rate, CRR and SLR.

Understand Reserve Bank of India (RBI)

The Reserve Bank of India (RBI) is the central bank of the country. It was established in 1935 under the RBI Act, 1934, and began as a privately owned body. It was nationalised in 1949, so it is now owned by the Government of India. Its head office is in Mumbai.

Think of the RBI as the banker's bank and the manager of the money system. Ordinary banks serve the public. The RBI serves the government and the banks. It also keeps prices and the financial system stable.

The main functions are:
- Currency issue: The RBI issues currency notes, except one-rupee notes and coins, which the Government of India issues. It keeps the supply of notes matched to the needs of the economy.
- Banker to the government: It keeps government accounts, receives and makes payments for the government, manages public debt and gives short-term advances.
- Banker to banks: Banks keep reserves with the RBI and can borrow from it. It is called the lender of last resort because it helps banks in a crisis.
- Regulator and supervisor of banks: It licenses banks, sets rules and inspects them to protect depositors.
- Custodian of foreign exchange: It manages the foreign exchange reserves and the rupee exchange rate.

Monetary policy means using money supply and interest rates to control inflation and support growth. The RBI uses quantitative tools, which affect the total amount of credit, and qualitative tools, which affect where credit goes.

Quantitative tools include the repo rate (the rate at which the RBI lends to banks against securities), the reverse repo rate (the rate at which the RBI borrows from banks), the Cash Reserve Ratio (CRR) (the share of a bank's deposits kept in cash with the RBI) and the Statutory Liquidity Ratio (SLR) (the share of deposits a bank keeps with itself in liquid assets such as cash, gold and government securities). Open market operations (buying and selling government securities) are also used.

The logic is simple. To fight inflation, the RBI makes money costlier and scarcer. To boost growth, it makes money cheaper and easier to get.

Key rules to remember

Repo rate: Repo rate = rate at which RBI lends to commercial banks; Higher repo rate makes bank borrowing costlier and tends to reduce credit and inflation.
Reverse repo rate: Reverse repo rate = rate at which RBI borrows from commercial banks; Opposite direction of flow from repo. It absorbs extra money from the system.
Cash Reserve Ratio (CRR): CRR amount = CRR % × bank's net demand and time liabilities; Kept as cash with the RBI. Higher CRR leaves banks with less to lend.
Statutory Liquidity Ratio (SLR): SLR amount = SLR % × bank's net demand and time liabilities; Kept by the bank itself in liquid assets like cash, gold and government securities.
Policy direction rule: Control inflation: raise rates, CRR, SLR, sell securities. Boost growth: do the opposite; Use this to answer any direction-of-effect question.

How to solve Reserve Bank of India (RBI) questions

Use this method for any RBI question, whether it asks for functions, tools or differences.

1Read the command word. 'Explain' needs detail, 'list' needs points, 'distinguish' needs a comparison.
2State in one line that the RBI is the central bank, set up under the RBI Act, 1934 and nationalised in 1949.
3Group your points: currency issue, banker to government, banker to banks, regulator of banks, foreign exchange, monetary policy.
4For tools, define each in one line and say whether it raises or lowers credit.
5Link each tool to its purpose: inflation control or growth support.
6For a numerical, apply percentage × deposits and show the working.
7Close with a one-line conclusion on the RBI's role in financial stability.

Quickest way: Remember RBI functions with the 'C-G-B-R-F-M' list

When to use it: Use this when you have only a few minutes to write a short answer or must recall points fast.

Write C for Currency, G for Government banker, B for Banks' banker, R for Regulator, F for Foreign exchange, M for Monetary policy.
Add one short line under each letter.
For tools, write the four rate and ratio terms: repo, reverse repo, CRR, SLR.
Mark each tool with an up arrow for tight policy and a down arrow for easy policy.
For a difference question, draw two columns on rough paper: who lends, who borrows, purpose.

Common mistakes in Reserve Bank of India (RBI)

Mixing up repo and reverse repo rate.
Both sound alike and both involve the RBI and banks.
Fix: Repo: banks borrow from the RBI. Reverse repo: the RBI borrows from banks. The word 'reverse' flips the direction.
Saying CRR is kept with the bank itself.
Students confuse CRR with SLR.
Fix: CRR is cash held with the RBI. SLR is held by the bank in liquid assets such as cash, gold and government securities.
Saying the RBI issues all currency, including one-rupee notes.
Students overgeneralise the currency function.
Fix: Write that the RBI issues notes except one-rupee notes, which the Government of India issues.
Giving the wrong effect of a rate change.
Students memorise tools without the logic.
Fix: Ask whether money becomes costlier or cheaper. Costlier money reduces credit and inflation. Cheaper money raises credit and growth.
Writing only a list of functions without explanation.
Students rush and skip detail in written papers.
Fix: Give one short explanatory line for each function so the answer earns full marks.
Confusing the RBI with SEBI or the Finance Ministry.
Several institutions regulate finance.
Fix: RBI regulates banks and money. SEBI regulates securities markets. The Finance Ministry frames fiscal policy.

Worked examples

Example 1

Explain the main functions of the Reserve Bank of India.

Show the solution

Start with the definition: the RBI is India's central bank, set up in 1935 under the RBI Act, 1934 and nationalised in 1949.
Currency issue: it issues currency notes, except one-rupee notes, and keeps supply matched to demand.
Banker to government: it holds government accounts, handles receipts and payments, manages public debt and gives short-term advances.
Banker to banks: it holds bank reserves, and acts as lender of last resort in a crisis.
Regulator of banks: it licenses banks, sets rules and inspects them to protect depositors.
Foreign exchange: it manages foreign exchange reserves and the rupee exchange rate.
Monetary policy: it uses repo rate, reverse repo rate, CRR, SLR and open market operations to control inflation and support growth.

Answer: The RBI is the central bank that issues currency, acts as banker to the government and to banks, regulates banks, manages foreign exchange and conducts monetary policy for stable prices and growth.

Example 2

A bank has net demand and time liabilities of ₹50,000 crore. The CRR is 4% and the SLR is 18%. Find the amount the bank must keep as CRR and as SLR, and the total. Then say what happens to its lending capacity if the RBI raises CRR.

Show the solution

CRR amount = 4% of ₹50,000 crore = 0.04 × 50,000 = ₹2,000 crore.
SLR amount = 18% of ₹50,000 crore = 0.18 × 50,000 = ₹9,000 crore.
Total = 2,000 + 9,000 = ₹11,000 crore.
CRR is held as cash with the RBI, and SLR is held by the bank in liquid assets.
If the RBI raises CRR, more cash must be kept with the RBI, so the bank has less to lend. Credit falls and inflation pressure eases.

Answer: CRR is ₹2,000 crore, SLR is ₹9,000 crore, total ₹11,000 crore. A higher CRR reduces the bank's lending capacity.

Exam tips

Learn the one-line definitions of repo, reverse repo, CRR and SLR. They are asked again and again.
For 'distinguish' questions, compare on who lends, who borrows, where funds are kept and purpose.
Always add the direction of effect on inflation and credit when you name a tool.
Write the RBI's function headings in bold or underlined on your answer sheet so the examiner sees each point quickly.
Use your 15 minutes of reading time to pick the questions where you can list at least five clear points.

Practice questions from Key Government Institutions

Reserve Bank of India (RBI) in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Reserve Bank of India (RBI): frequently asked questions

What are the main functions of the RBI for CSEET?

The main functions are issuing currency, acting as banker to the government and to banks, regulating banks, managing foreign exchange and conducting monetary policy. Write each with a short explanation for full marks.

What is the difference between repo rate and reverse repo rate?

Repo rate is the rate at which the RBI lends to banks. Reverse repo rate is the rate at which the RBI borrows from banks. Repo injects money into the system, and reverse repo absorbs it.

What is the difference between CRR and SLR?

CRR is the share of deposits a bank keeps as cash with the RBI. SLR is the share a bank keeps with itself in cash, gold or government securities. Both limit how much a bank can lend.

Why is the RBI called the lender of last resort?

Banks that cannot get funds from any other source can borrow from the RBI in a crisis. This protects depositors and keeps the banking system stable.