To finish your car loan ahead of schedule, set autopay a little above your payment and tell the lender to apply the extra to principal, the balance you still owe. Most car loans charge interest only on that balance, so each extra dollar cuts the interest on every later payment. Check that yours does.
Take a loan like that with $25,000 left at 7% and 60 payments to go, and suppose the lender applies every extra dollar to principal. By our math, rounding the $495 payment up to $550 saves about $570 in interest and ends the loan seven months early.
That last condition is the catch. Some lenders count extra money as an early payment of next month’s bill instead of a cut to the balance, and that saves far less.
Before you start, pay off any credit card balance. In 2026, the Federal Reserve’s average rate on cards that charge interest was about 22%, more than three times this loan’s 7%. Build an emergency fund too, so you can pay for the next repair without a card.
Next, check that your contract says simple interest, since extra payments save little on a precomputed loan, which figures all its interest when the loan starts. Ask the lender how it applies money above the amount due, and choose principal-only in the app or add a note asking for it. Then set the extra up so it takes no willpower:
- Set autopay to a round number above the payment due, such as $550 instead of $495.
- If your lender accepts half payments, pay half the bill every two weeks, the first one right after a due date. Twenty-six half payments a year make 13 full ones, one more than your contract calls for.
- Decide once that every tax refund and bonus goes to the loan the day it arrives, and add part of each raise to the autopay.
After the first extra payment, check your statement. It should show the extra going to principal, and if it doesn’t, call the lender.
When the loan is gone, set the same amount to move into savings automatically, and your next car will need a smaller loan, or none at all.
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