Calculating the Cash Reserve Ratio (CRR) and Statutory Liquidity Ratio (SLR) requires determining a bank's Net Demand and Time Liabilities (NDTL). Under RBI guidelines, the NDTL serves as the base for these calculations.
1. The Core Formula for NDTL
NDTL is calculated by netting off the liabilities of a bank with its assets held within the banking system.
Basic Formula:
$$\text{NDTL} = (\text{Demand Liabilities} + \text{Time Liabilities}) - \text{Assets with the Banking System}$$
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Demand Liabilities: Liabilities payable on demand (e.g., current accounts, demand portion of savings deposits, demand drafts, unclaimed deposits).
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Time Liabilities: Liabilities payable otherwise than on demand (e.g., fixed deposits, recurring deposits, time portion of savings deposits).
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Other Demand and Time Liabilities (ODTL): Items like interest accrued on deposits, bills payable, and unpaid dividends.
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Assets with the Banking System: This includes balances with other banks in current accounts, loans, or deposits repayable at call or short notice. If the "Assets with the Banking System" exceed the "Liabilities to the Banking System," the net interbank liability is treated as zero for the purpose of this calculation.
2. Calculating CRR and SLR
Once the NDTL is determined, the ratios are applied as follows:
| Ratio |
Definition |
Maintenance Requirement |
| CRR |
Percentage of NDTL kept as cash with the RBI. |
Maintained in the form of a credit balance in a current account with the RBI. |
| SLR |
Percentage of NDTL maintained in liquid assets. |
Maintained in the form of cash, gold, or approved securities (e.g., government securities). |
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Reporting: Banks report their NDTL through specific statutory returns—Form A for CRR and Form VIII for SLR.
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Timing: CRR is calculated on the basis of NDTL with a lag of one fortnight (the reporting Friday of the previous fortnight).
3. Key Exclusions
Not all liabilities are included in the NDTL calculation. Common exclusions include:
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Paid-up capital, reserves, and retained profits.
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Refinance availed from the RBI or apex financial institutions like NABARD/SIDBI.
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Net income tax provision.
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Funds borrowed under market repo against government securities.
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Liabilities arising from the Bankers' Acceptance Facility (BAF).
Summary
To calculate these ratios:
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Identify all liabilities (Demand, Time, and ODTL).
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Subtract eligible assets (Assets with the banking system) to arrive at the NDTL.
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Apply the prevailing percentage rates prescribed by the RBI to the NDTL base to find the required amount of reserves to be maintained.
Note: RBI updates these rates and guidelines periodically. Always refer to the latest Master Direction on CRR and SLR for the most current statutory percentages.