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Business Economics · Money Market

Monetary Policy Tools of RBI: CRR, SLR, Repo, MSF and OMO

Updated 1 October 2026

Monetary policy tools are the instruments the RBI uses to control liquidity and credit in the economy. Quantitative tools include CRR, SLR, repo, reverse repo, MSF, bank rate and open market operations. To solve questions, identify whether the RBI wants to tighten or ease liquidity, then pick the tool and its direction.

Understand Monetary Policy Tools of RBI

Money supply in the economy depends heavily on how much banks can lend. The RBI is India's central bank. It controls how much money banks have and how costly it is, so that inflation stays in check and growth continues. This is monetary policy.

The tools fall into two groups. Quantitative tools control the total volume of credit and money: CRR, SLR, policy rates (repo, reverse repo, MSF, bank rate) and open market operations. Qualitative tools control the direction or use of credit, such as margin requirements on loans against securities, moral suasion and credit rationing. Qualitative tools target specific sectors rather than the whole economy.

CRR (Cash Reserve Ratio) is the share of a bank's net demand and time liabilities that it must keep as cash with the RBI. These balances cannot be lent out and earn no interest. SLR (Statutory Liquidity Ratio) is the share the bank must hold in safe liquid assets such as cash, gold and government securities, kept with itself. SLR funds are held in assets, such as securities, that can earn returns. A higher ratio leaves banks with less to lend. A lower ratio frees up lending.

The repo rate is the rate at which the RBI lends short-term funds to banks against government securities. The reverse repo rate is the rate at which the RBI borrows from banks, so it absorbs liquidity. A higher reverse repo rate makes banks park more funds with the RBI, which tightens liquidity. A lower reverse repo rate eases it. The MSF (Marginal Standing Facility) lets banks borrow overnight from the RBI in emergencies, at a rate above repo. Banks can pledge government securities held within their SLR, up to a limit, to borrow under MSF. The bank rate is the rate at which the RBI lends to banks (rediscounts bills) for longer-term needs, generally without specific collateral. It is currently set equal to the MSF rate.

In open market operations (OMO) the RBI buys or sells government securities in the market. Buying securities puts money into the system and raises liquidity. Selling securities pulls money out. Think of every tool as a tap: tighten when inflation is high, loosen when growth is weak.

Key formulas to remember

Tight (contractionary) policy
Raise CRR/SLR/repo/reverse repo/MSF/bank rate, or sell securities (OMO) → liquidity falls, credit becomes costlier
Used to control inflation. A higher reverse repo rate pulls more funds back to the RBI.
Easy (expansionary) policy
Cut CRR/SLR/repo/reverse repo/MSF/bank rate, or buy securities (OMO) → liquidity rises, credit becomes cheaper
Used to boost growth and demand. A lower reverse repo rate makes parking funds with the RBI less attractive.
CRR
CRR amount = CRR % × Net Demand and Time Liabilities (NDTL)
Held as cash with the RBI; it cannot be lent out and currently earns no interest from the RBI.
SLR
SLR amount = SLR % × NDTL
Held by the bank itself in cash, gold or approved securities. Securities held can earn returns.
Rate corridor
Reverse repo rate < Repo rate < MSF rate
The MSF rate is normally set above repo. The bank rate is currently set equal to the MSF rate.
OMO direction
RBI buys securities → money supply ↑; RBI sells securities → money supply ↓
Only the RBI's action matters, not the bank's.

How to solve Monetary Policy Tools of RBI questions

Use this method for any MCQ on RBI monetary policy tools.

  1. 1Read the situation and decide whether it is inflation (needs tightening) or slowdown (needs easing).
  2. 2Identify the tool named in the question: CRR, SLR, repo, reverse repo, MSF, bank rate or OMO.
  3. 3Apply the direction rule: tightening means higher ratios or rates, or selling securities; easing means the opposite.
  4. 4Check who does the action. In OMO the RBI buys or sells. In repo the RBI lends. In reverse repo the RBI borrows.
  5. 5For ratio calculations, multiply the percentage by NDTL and compare the result with what the bank holds.
  6. 6Check whether the tool is quantitative or qualitative if the question asks about type.
  7. 7Eliminate options that reverse the direction, then choose the one that fits.

Quickest way: Tap and direction shortcut

When to use it: For any direction or definition MCQ when time is short.

  1. Ask one question: does the option take money out of banks or put money in?
  2. Higher CRR, SLR or rates (including reverse repo) and RBI selling securities all take money out. Cross out any option claiming they raise lending.
  3. For definition questions, remember: CRR is cash with the RBI, SLR is assets with the bank, repo is RBI lending, reverse repo is RBI borrowing.
  4. If the question says emergency overnight borrowing, think MSF.
  5. If two options remain, check the rate order: reverse repo is lowest, repo is in the middle, MSF is highest.

Common mistakes in Monetary Policy Tools of RBI

  • Mixing up repo and reverse repo.

    Both names sound similar and students think from the bank's side.

    Fix: Always think from the RBI's side. Repo: RBI lends to banks. Reverse repo: RBI borrows from banks.

  • Thinking a higher reverse repo rate eases policy.

    Students see a higher rate and assume banks get more money.

    Fix: A higher reverse repo rate encourages banks to park more funds with the RBI, so liquidity tightens. A cut eases liquidity.

  • Saying SLR is kept with the RBI.

    CRR and SLR are learned together and get blurred.

    Fix: CRR is cash with the RBI. SLR is held by the bank itself in cash, gold or approved securities.

  • Thinking buying securities in OMO reduces money supply.

    Students think of the buyer paying money away.

    Fix: When the RBI buys, it pays the sellers, so money enters the system. RBI buying raises liquidity.

  • Treating MSF as an ordinary borrowing window at the repo rate.

    Both are RBI lending facilities.

    Fix: MSF is an emergency overnight facility at a rate above repo, and it allows banks to pledge government securities held within their SLR, up to a limit, to borrow.

  • Calling margin requirements a quantitative tool.

    Students see 'ratio' and assume it controls total credit.

    Fix: Margin requirements, moral suasion and credit rationing are qualitative tools because they guide the direction of credit.

Worked examples

Example 1

To control high inflation, the RBI is most likely to: (a) lower the CRR (b) sell government securities in the open market (c) lower the repo rate (d) buy government securities in the open market

Show the solution
  1. High inflation needs tightening, which means reducing liquidity.
  2. Lowering CRR and lowering repo both increase liquidity, so (a) and (c) are wrong.
  3. Buying securities injects money, so (d) is wrong.
  4. Selling securities pulls money out of the system, so (b) is correct.

Answer: (b) sell government securities in the open market

Example 2

A bank has net demand and time liabilities of ₹2,00,000 crore. If the CRR is 4%, how much must it keep as cash with the RBI? (a) ₹4,000 crore (b) ₹8,000 crore (c) ₹80,000 crore (d) ₹18,000 crore

Show the solution
  1. CRR amount = CRR % × NDTL.
  2. = 4% × ₹2,00,000 crore.
  3. = 0.04 × 2,00,000 = ₹8,000 crore.

Answer: (b) ₹8,000 crore

Example 3

Which of the following is a qualitative method of credit control? (a) Repo rate (b) Open market operations (c) Moral suasion (d) Cash Reserve Ratio

Show the solution
  1. Quantitative tools control the total volume of credit: repo, OMO and CRR all do this.
  2. Qualitative tools influence the direction or use of credit.
  3. Moral suasion is persuasion by the RBI to guide banks' lending behaviour, so it is qualitative.

Answer: (c) Moral suasion

Exam tips

  • Most questions test direction. Decide tightening or easing first, then match the tool.
  • Learn the one-line definition of each tool, especially who lends and who borrows.
  • Remember the rate order: reverse repo < repo < MSF.
  • Expect questions on quantitative versus qualitative tools. Margin requirements and moral suasion are qualitative.
  • If you are unsure between two options, skip it only after trying elimination; wrong answers cost 0.25 marks.

Practice questions from Money Market

Monetary Policy Tools of RBI: frequently asked questions

What is the difference between CRR and SLR?

CRR is the share of a bank's NDTL kept as cash with the RBI. SLR is the share kept by the bank itself in cash, gold or approved securities. CRR balances cannot be lent out and earn no interest, whereas SLR funds are held in assets (e.g. securities) that can earn returns.

What is the marginal standing facility?

MSF is an overnight borrowing window from the RBI for banks facing a liquidity shortage. The rate is above the repo rate. Banks can pledge government securities held within their SLR, up to a limit, to borrow.

How does open market operation control money supply?

When the RBI sells government securities, it takes money from buyers, so liquidity falls. When it buys securities, it pays sellers, so liquidity rises.

What are quantitative and qualitative credit control methods?

Quantitative methods control the total amount of credit, such as CRR, SLR, policy rates and OMO. Qualitative methods control where credit goes, such as margin requirements, moral suasion and credit rationing.