Banks don't have to have the money before loaning it out
"the relationship between reserves and loans typically
operates in the reverse way to that described in some
economics textbooks. Banks first decide how much to lend
depending on the profitable lending opportunities available to them ...It is these lending decisions that
determine how many bank deposits are created by the banking
system. The amount of bank deposits in turn influences how
much central bank money banks want to hold in reserve (to
meet withdrawals by the public, make payments to other
banks, or meet regulatory liquidity requirements), which is
then, in normal times, supplied on demand"
Link above is specific to UK but it's similar in most countries
"When an institution fails to satisfy its reserve requirements, it can make up its deficiency with reserves borrowed either from a Federal Reserve Bank"
in other words... banks lend first and account later, if there's a shortfall at the end of the day they basically get an automatic loan from the central bank
Banks don't have to have the money before loaning it out
"the relationship between reserves and loans typically operates in the reverse way to that described in some economics textbooks. Banks first decide how much to lend depending on the profitable lending opportunities available to them ...It is these lending decisions that determine how many bank deposits are created by the banking system. The amount of bank deposits in turn influences how much central bank money banks want to hold in reserve (to meet withdrawals by the public, make payments to other banks, or meet regulatory liquidity requirements), which is then, in normal times, supplied on demand"
Link above is specific to UK but it's similar in most countries
See also https://en.wikipedia.org/wiki/Reserve_requirement#United_Sta...
"When an institution fails to satisfy its reserve requirements, it can make up its deficiency with reserves borrowed either from a Federal Reserve Bank"
in other words... banks lend first and account later, if there's a shortfall at the end of the day they basically get an automatic loan from the central bank