If you have an installment contract or loan
This covers retail installment contracts and bank or credit union installment loans — a fixed amount over a fixed term.1
Interest first
2
Then any unpaid fees
3
Then your outstanding principal
A late fee will not trigger another late fee. If a payment is short only because of a late fee
charged on an earlier payment, and the current payment is otherwise paid in full, another late fee
is not added on top.
If you have a revolving account
Purchases are added as charge slips against an overall balance, and the order has more steps.1
Outstanding finance charges, fees, and any past-due amounts
2
Then your minimum monthly payment, and anything above it, goes first to promotional balances — soonest to expire first
3
Then to interest-bearing balances, highest rate first
If you have a student loan
Payments are applied on the date they are received, and interest is simple rather than compounded. During an in-school period, a payment above the interest owed puts the excess toward principal; a payment below it does not add the shortfall to your principal. See Student loans.If you pay more than your monthly payment
There is never a penalty for paying extra or paying early. What the extra does depends on how your account is set up, and the two behaviors are different enough to matter:
The second one catches people out. Your balance still comes down, but if you assumed you had also
made this month’s payment and put money toward principal, only one of those happened.
If you are paying extra to clear a promotional balance before its deadline,
check your transaction history after the first one to confirm the
money went where you intended.