Most of us know how a bank earns its profit. Customers deposit their money with banks and earn an annual interest in return. The money deposited is used by banks to lend to those who need it, but at a higher interest rate. The difference in deposit and lending rates turns into a bank’s profit.
What if banks lend a little too much to make more profit and are left with no money to return to depositors in times of a crisis? The Statutory Liquidity Ratio (SLR) is designed to make sure that doesn’t happen. It makes it compulsory for banks to set aside a fixed portion of their deposits in safe and liquid assets, thereby protecting depositors’ interests.
This article explains what SLR means, its purpose, how it works, which assets qualify as SLR investments, and how it differs from Cash Reserve Ratio (CRR) and the repo rate.
Key Takeaways
- SLR is the minimum portion of a bank’s deposits that it must hold in liquid assets such as cash, gold, and government securities.
- SLR is set by RBI under the Banking Regulation Act, 1949, and is reviewed periodically.
- NDTL refers to the total demand and time liabilities (deposits) of a bank after accounting for the deposits held with other banks.
- Raising SLR means tightening the funds that banks can lend. Lowering SLR frees up more capital for banks to lend, thereby achieving higher credit growth.
- Banks that fail to meet the compulsory SLR requirement face penal interest charges from RBI.
What Is Statutory Liquidity Ratio (SLR)?
SLR is the minimum proportion of a bank's Net Demand and Time Liabilities (NDTL) that it must hold in the form of specified liquid assets, cash, gold, or approved government securities, before it lends out the rest. The Reserve Bank of India (RBI) sets this requirement under Section 24 of the Banking Regulation Act, 1949. It is calculated as:
SLR = (Liquid Assets ÷ NDTL) x 100
RBI can set SLR anywhere up to a statutory cap of 40%. A 2007 amendment to the Act removed the earlier floor, giving the central bank full discretion to move the ratio in either direction as monetary conditions demand.
Step-by-Step Calculation of SLR
Working out whether a bank is SLR-compliant or not is a simple three-step exercise.
Step 1:
Determine the bank’s NDTL. It covers everything that the bank owes to the public. This includes savings and current account balances, fixed deposits, and similar obligations, minus interbank deposits.
Step 2:
Apply the Prescribed SLR Rate to calculate the minimum liquid assets the bank must hold. Just multiply the bank’s NDTL by the RBI-mandated SLR percentage.
For example, a bank with an NDTL of ₹1,000 crore and an SLR requirement of 18% must hold at least ₹180 crore in liquid assets (₹1,000 crore x 18%).
Step 3:
Compare this number against the bank’s actual liquid holdings. If the bank’s actual cash, gold, and government securities add up to ₹180 crore or more, it is compliant. Anything less triggers a shortfall and a penalty from RBI.
Which Assets Qualify Under SLR?
- Cash held by the bank itself. This does not include the cash reserve ratio (CRR) balance parked with the RBI. CRR is a specific percentage of a bank’s NDTL that must be kept as liquid cash with RBI.
- Gold (valued at the current market price).
- The central government’s dated securities and treasury bills.
- State development loans and other RBI-approved securities.
Why Does RBI Mandate SLR?
- Protecting Depositors: A guaranteed cushion of liquid assets means banks can honour withdrawal requests even during periods of stress.
- Controlling Credit and Inflation: Raising the SLR reduces banks' capital available for lending. This helps in cooling credit growth and demand-driven inflation. Cutting SLR does the exact reverse.
- Funding Government Borrowing: Since government securities qualify as SLR assets, the requirement creates steady demand for government debt.
- Encouraging Prudent Investment: Banks are indirectly pushed towards safer, low-risk assets rather than chasing higher-yield but riskier avenues with depositor money.
SLR vs CRR vs Repo Rate
| Aspect | SLR | CRR | Repo Rate |
| What is it? | Minimum liquid assets banks must hold | Minimum cash banks must park with RBI | Rate at which RBI lends short-term funds to banks |
| Held as | Cash, gold, government securities | Cash only, with RBI | Not applicable; it is a lending rate |
| Earns interest | Yes | No | Not applicable |
| Primary purpose | Liquidity buffer and prudent investment | Direct control over money supply | Short-term cost of borrowing for banks |
What Happens if a Bank Fails to Maintain SLR?
Banks have to report their NDTL to RBI every fortnight. Any shortfall, therefore, can never go unnoticed for too long. RBI levies penal interest of the Bank Rate plus 3 percentage points on the day of default, rising to Bank Rate plus 5 percentage points if the shortfall continues into the next reporting period. Persistent non-compliance can also draw regulatory scrutiny beyond financial penalties as it signals weakness in a bank’s liquidity management.
Impact of SLR on Investors
There are indirect, but significant, consequences of changes in SLR on investors:
- Interest Rates: A higher SLR reduces the pool of available funds for lending. This can push up lending rates, whether home loans or corporate credit.
- Bond and G-Sec Yields: Since SLR-driven demand for government securities is fairly captive, shifts in the ratio can influence bond yields. This, in turn, affects returns on debt mutual funds.
- Bank Stocks: A sharp hike in SLR trims the pool of funds that banks can deploy toward interest-earning loans. This has a direct impact on a bank’s earnings and, thereby, its stock price.
- Financial Stability: A well-maintained SLR framework strengthens confidence in the country’s banking system. This is an indirect but real benefit for anyone with exposure to Indian equities or debt.
Conclusion
Statutory Liquidity Ratio (SLR) is not just technical banking jargon. Unlike the popular belief, its reach extends well beyond a bank’s balance sheet. By forcing banks to hold a defined share of deposits in safe and liquid assets, RBI protects depositors, keeps credit growth in check, and creates steady demand for government borrowing.
For investors, SLR is worth tracking alongside CRR and repo rate to understand where RBI policy, interest rates and liquidity conditions are headed. Staying aware of these shifts helps in reading the broader direction of India’s economy.
