Do banks save money regularly to earn interest?

There is interest on saving money, whether it is fixed deposit or current deposit, of course, the fixed deposit rate is higher. The interest on a long deposit period is a little more. If your passbook or card is not closed, the interest will only be 1 time a year, which seems to be June 1 or July 1 time. You saved less money. If you haven't received it, it is estimated that there are two reasons: 1 links various payment services (utilities, property fees, etc. If it's a savings card or a credit card, you have to pay an annual fee.