I closed my interest-bearing account, but the bank/credit union did not pay me interest up until the day I withdrew the money. Why?
If you closed the account before the bank or credit union credited the interest, generally the bank or credit union won’t pay that interest. This is known as “forfeiture of interest.”
However, the bank or credit union must disclose this policy in the account agreement you received when you opened the account. To find out your bank or credit union's policy, review your account agreement or ask your bank or credit union.