NISM-Series-XV: Research Analyst · Economic Analysis

Monetary Policy and Interest Rates for NISM Research Analyst

Updated 11 October 2026 · Fact-checked

Monetary policy is how the RBI manages money supply and credit to control inflation and support growth. It uses the repo rate, reverse repo rate, CRR, SLR and open market operations. To solve questions, identify whether policy is tightening or easing, then trace the effect on rates, liquidity, bond yields and equities.

Understand Monetary Policy and Interest Rates

Monetary policy is the RBI's use of interest rates and liquidity tools to influence money supply, credit and demand in the economy. Its main aims are stable prices (inflation control) and support for growth. India follows a flexible inflation targeting framework, and a Monetary Policy Committee (MPC) decides the policy repo rate.

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 funds from banks. Repo is the rate banks pay; reverse repo is the rate banks earn. Higher repo makes borrowing costlier. Lower repo makes it cheaper.

CRR (Cash Reserve Ratio) is the share of a bank's net demand and time liabilities (NDTL) that it must keep as cash with the RBI. SLR (Statutory Liquidity Ratio) is the share of NDTL that a bank must hold in liquid assets such as cash, gold and government securities, kept with itself. A higher CRR or SLR leaves banks with less to lend. A lower one frees up lending capacity.

Open market operations (OMO) are the RBI's outright buying or selling of government securities. Buying securities puts money into the system (easing). Selling securities pulls money out (tightening).

The transmission mechanism is how a policy change reaches the economy. A rate change moves bank lending and deposit rates, which changes borrowing, spending and investment, which then affects demand and inflation. It also moves bond yields, the exchange rate and equity valuations. Higher rates raise discount rates and borrowing costs, which usually pressures stocks, especially rate-sensitive sectors such as banks, real estate and autos. Lower rates usually support them. Transmission is gradual and not always complete.

Key formulas to remember

Repo rate: RBI lends to banks (against government securities); Raising it tightens policy. Cutting it eases policy.
Reverse repo rate: RBI borrows from banks (absorbs liquidity); Do not confuse direction with repo. Banks earn this rate.
CRR: CRR = cash kept with RBI ÷ NDTL; Held as cash with the RBI. Earns no interest on this balance.
SLR: SLR = liquid assets held ÷ NDTL; Held by the bank itself in cash, gold or government securities.
OMO direction: Buy securities → liquidity ↑; Sell securities → liquidity ↓; Buying is easing. Selling is tightening.
Policy stance rule: Tightening: repo ↑, CRR ↑, SLR ↑, OMO sale; Easing: the opposite; Tightening is used to fight inflation. Easing is used to support growth.

How to solve Monetary Policy and Interest Rates questions

Use this method for any monetary policy question, whether it asks for a definition, a direction or a market effect.

1Read the question and mark the tool: repo, reverse repo, CRR, SLR or OMO.
2Note the direction of the change: increase, decrease, buy or sell.
3Decide if the move is tightening (less liquidity, costlier credit) or easing (more liquidity, cheaper credit).
4Link the stance to the goal: tightening targets high inflation, easing targets weak growth.
5Trace the effect: bank lending rates, credit demand, bond yields (move opposite to rates), then equities.
6Check who holds what: CRR is cash with the RBI, SLR is assets with the bank itself.
7Eliminate options that reverse the direction, then pick the one matching the stance.

Quickest way: Tight or easy in ten seconds

When to use it: Use when the question gives a policy action and asks for its effect on liquidity, rates, yields or stocks.

Ask: does the action take money out of the system or put it in?
Money out (repo up, CRR up, SLR up, OMO sale) means tight: rates up, bond prices down, equities under pressure.
Money in (repo down, CRR down, SLR down, OMO purchase) means easy: rates down, bond prices up, equities supported.
For definitions, remember: CRR is cash with the RBI, SLR is with the bank itself.

Common mistakes in Monetary Policy and Interest Rates

Saying the RBI lends to banks at the reverse repo rate.
The two names sound alike and the direction gets swapped.
Fix: Repo: RBI lends. Reverse repo: RBI borrows.
Treating an OMO purchase as tightening.
Students think buying means taking something from the system.
Fix: When the RBI buys securities, it pays out money, so liquidity rises.
Saying SLR is kept with the RBI.
CRR and SLR are mixed up.
Fix: CRR is cash with the RBI. SLR is held by the bank in liquid assets, including government securities.
Saying bond prices rise when rates rise.
Students link both to the word 'up'.
Fix: Bond prices and yields move in opposite directions. A rate hike usually lowers existing bond prices.
Assuming a rate cut always lifts the stock market.
Overstating a common tendency as a rule.
Fix: Say 'usually supportive'. Markets also react to growth, earnings and expectations already priced in.
Thinking higher CRR increases bank lending.
Confusing reserves with lendable funds.
Fix: Higher CRR locks more cash with the RBI, so banks have less to lend.

Worked examples

Example 1

The RBI raises the CRR. What is the most likely immediate effect on the banking system?
A. Banks have more funds to lend
B. Banks have less lendable funds
C. The repo rate falls automatically
D. Government securities holdings must be sold

Show the solution

The tool is CRR and the direction is an increase.
CRR is the share of NDTL kept as cash with the RBI.
A higher share locked with the RBI leaves banks with less lendable money.
So liquidity falls and the stance is tightening.
Option A is the reverse. Options C and D do not follow automatically.

Answer: B. Banks have less lendable funds.

Example 2

Inflation is running above the RBI's comfort range. Which action fits the RBI's likely response, and what is the usual effect on existing bond prices?
A. Cut repo rate; bond prices fall
B. Buy securities through OMO; bond prices fall
C. Raise repo rate; bond prices fall
D. Raise repo rate; bond prices rise

Show the solution

High inflation calls for tightening to reduce demand.
Tightening means raising the repo rate, so A and B (easing actions) are out.
Higher rates raise market yields.
Bond prices move opposite to yields, so existing bond prices fall.
D has the right action but the wrong bond effect.

Answer: C. Raise repo rate; bond prices fall.

Exam tips

Expect direction-based questions: given an action, choose the effect on liquidity, rates or yields.
Memorise the one-line definitions of repo, reverse repo, CRR and SLR. Many options differ by a single word.
Watch for the word 'immediate' versus 'eventual'. Policy effects on stocks are tendencies, not guarantees.
In case-based questions, first label the stance as tightening or easing. Then answer every sub-question from that label.
With 25% negative marking, skip only if you cannot remove at least two options.

Practice questions from Economic Analysis

Monetary Policy and Interest Rates in other exams

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

Monetary Policy and Interest Rates: frequently asked questions

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

The repo rate is what banks pay to borrow from the RBI against government securities. The reverse repo rate is what the RBI pays when it borrows funds from banks. Repo injects liquidity, reverse repo absorbs it.

What do CRR and SLR mean and how do they affect banks?

CRR is the share of NDTL a bank keeps as cash with the RBI. SLR is the share kept in liquid assets such as cash, gold and government securities. Raising either reduces the funds a bank can lend.

How does monetary policy affect the stock market?

Higher rates raise borrowing costs and discount rates, which usually pressures valuations, especially in rate-sensitive sectors. Lower rates usually support them. Expectations and earnings also matter, so the effect is not certain.

What is the monetary policy transmission mechanism?

It is the path by which a policy rate change reaches the economy. Bank lending and deposit rates adjust, which changes borrowing, spending and investment, and in turn demand and inflation. Bond yields and the exchange rate also respond.