Banking & savings
CASA
Also known as: Current Account Savings Account
A banking term for the combined cheap deposits banks hold in current and savings accounts.
CASA refers to the money banks hold in current and savings accounts combined.
Banks love a high CASA ratio because this money is cheap for them: they pay little or no interest on it.
For you as a customer, it is a reminder that the bank profits from your idle balance, so don't over-park cash there.
For example
A bank boasting a high CASA ratio is earning well off customers who leave large sums in low-interest savings accounts.