2.3.2.3 Credit creation

Credit creation is the process by which commercial banks expand the money supply by lending out a significant portion of the deposits they receive. It is one of the key functions of commercial banks and plays a vital role in the monetary system. The process of credit creation is based on the fractional reserve banking system, which allows banks to hold only a fraction of their deposits as reserves while lending out the rest. Here’s how credit creation works:

1. Fractional Reserve Requirement: Central banks typically impose a fractional reserve requirement on commercial banks. This means that banks are required to hold a certain percentage of their deposits as reserves, either in the form of cash or as deposits with the central bank. The reserve requirement serves as a safeguard to ensure that banks can meet depositor withdrawals and maintain financial stability.
2. Excess Reserves: Any amount of reserves held by a bank above the required reserve ratio is considered excess reserves. These excess reserves can be utilized for lending purposes.
3. Lending: When a bank receives deposits from its customers, it keeps a portion of these deposits as reserves (as required by the reserve ratio) and lends out the rest to borrowers. The amount that can be lent out is determined by the reserve ratio. For example, if the reserve requirement is 10%, the bank can lend out 90% of the deposits it receives.
4. Deposit Creation: When a bank lends money to a borrower, the borrower typically spends or invests the loan amount. In most cases, the loan amount is deposited back into the banking system, either in the same bank or another bank. This new deposit becomes part of the money supply.
5. Repeat Process: The process of credit creation does not end with the initial deposit. The new deposit becomes part of the reserves of the bank receiving it, and it can lend out a portion of this new deposit, creating additional loans and deposits in the system. This process can continue, creating a multiplier effect on the money supply.
6. Money Multiplier: The money multiplier is a measure of the potential increase in the money supply through credit creation. It is calculated as the reciprocal of the reserve ratio. For example, if the reserve ratio is 10% (1/0.10), the money multiplier would be 10. This means that a $100 deposit can potentially lead to $1,000 in new deposits if the full credit creation process is utilized.