Banks are money-making machines, literally! They create money through lending, using a system called fractional reserve banking . This process allows banks to lend out a portion of deposits, creating new money in borrowers' accounts.
The money creation process has a multiplier effect, amplifying the initial deposit. While this system stimulates economic growth, it also carries risks like inflation and bank runs . Central banks play a crucial role in managing these risks and the overall money supply .
How Banks Create Money
Fractional Reserve Lending
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Banks create money through lending
Loans create deposits in borrower's account, new money that didn't previously exist
Example: Bank lends 100 , 000 f o r a h o u s e , c r e a t i n g a 100,000 for a house, creating a 100 , 000 f or ah o u se , cre a t in g a 100,000 deposit in the borrower's account
Fractional reserve system enables lending a portion of deposits
Banks keep a fraction (reserve requirement) of deposits on hand
Remaining fraction can be lent out
Example: 10% reserve requirement, 1 , 000 d e p o s i t a l l o w s 1,000 deposit allows 1 , 000 d e p os i t a ll o w s 900 to be lent out
Money multiplier amplifies initial deposit
Borrowed money is spent, becomes a deposit in another bank
Receiving bank lends a portion of new deposit, creating more money
Example: 1 , 000 i n i t i a l d e p o s i t w i t h 10 1,000 initial deposit with 10% reserve requirement can create up to 1 , 000 ini t ia l d e p os i tw i t h 10 10,000 in total deposits
T-Account Balance Sheets
Risks and Benefits
Benefits of bank money creation:
Increases money supply, stimulates economic growth
Enables borrowers to invest or consume
Banks earn interest income on loans
Risks of bank money creation:
Excessive lending can cause inflation (money supply grows faster than goods and services)
Risky loans may lead to defaults and bank failures
Fractional reserves make banks vulnerable to "runs" (many simultaneous withdrawals)
Central banks manage money supply and risks:
Reserve requirements: Fraction of deposits held in reserves
Open market operations: Buying or selling government securities influences money supply
Discount rate: Interest rate for banks borrowing from central bank