What should an employee do with the amounts added to his bank account with a fixed usurious return, and is it permissible to donate them? And what is the alternative solution for saving that preserves the value of money in light of inflation?

The difference between a savings account in an Islamic bank and a conventional (interest-based) bank:

Islamic Bank: The return from a savings account is not forbidden (haram) and it is permissible to benefit from it. Conventional Bank: The interest is forbidden (haram) and must be disposed of by spending it on charitable causes. However, if the owner of the money was ignorant of its prohibition, then some scholars permit him to benefit from it.

Alternative Solutions:

1. Opening an account in an Islamic bank. 2. Keeping the money at home or in secure places. 3. If there is fear of theft of the money and an Islamic bank is not available, it is permissible to open a current account (without interest) in a conventional bank, with the emphasis that opening an account in a conventional bank is originally forbidden, even without interest, due to the prohibition of cooperating in sin and aggression.