Reserve Ratio Calculator

The reserve ratio is the percentage of deposits that the central bank requires a bank to keep on hand at a central bank. When a bank finds itself with excess reserves, it can lend them to other individuals or banks as a loan that may need them.

For example, suppose ABC Bank has $1,000 million in deposits. If the reserve ratio requirement is 10% in the country, the ABC Bank must reserve at least $100 million in central bank and may not use that cash for lending or any other purpose.

Reserve ratio

The reserve ratio is expressed as a percentage of the bank’s total deposits. It helps ensure that the bank does not over-leverage itself. In some countries, increasing or decreasing reserve ratios may be used to help control the money supply. It is also the benchmark rate for many corporate and international government loans.

Reserve ratio formula

Change in Reserve Ratio

Suppose the Central Bank has announced a new reserve ratio of 8.10%. Company A’s existing deposit liabilities and cash reserves are 230,000,000.00 and $15,000,000.00 respectively. As a result, Company A is required to add $3,630,000.00 more to the cash reserve in order to comply with the new reserve requirement of 18,630,000.00.

Reserve Ratio Calculators


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