Car loan extra payment calculator

See how much interest you save, how many months you cut and your new payoff date when you pay extra on a car loan. The example below is already filled in; replace it with your own numbers.

Car loan calculator

What an extra payment does to your car loan

Change any field and the results update instantly. Nothing you type leaves your browser.

Loan details
Amount
%
years
Extra payments
+
+
+
Total interest saved —
Payoff time saved —
New payoff date —
Scheduled balance Accelerated balance
YearSched. balanceSched. interestAccel. balanceAccel. interestExtra applied

Estimates are for planning purposes only and assume a fixed rate and consistent extra payments applied directly to principal. Actual figures from your lender may vary. This tool does not constitute financial advice. See exactly how it is calculated.

The short answer

On a $28,000, 60-month car loan at 7.5%, paying an extra $100 a month saves about $1,036 in interest and ends the loan 10 months early. The earlier and the larger the extra payment, the more you save.

What you need to use the calculator

  • Loan balance: what you still owe, from your latest statement.
  • Annual interest rate (APR): shown on your contract and statement.
  • Remaining term: the years left on the loan (for example, 3 years for 36 months).
  • Extra payment: a monthly amount, a yearly amount, or a one-time payment on a date you choose.

What an extra payment saves: real examples

Same loan in every row: $28,000, 7.5% fixed rate, 60 months. The scheduled payment is $561.06 and the total interest without extra payments is $5,663.75.

Extra per monthInterest savedMonths savedTotal interest paid
+$25$301.353$5,362.40
+$50$571.595$5,092.17
+$100$1,036.2910$4,627.46
+$200$1,747.1218$3,916.63
+$300$2,264.2523$3,399.50

Extra amount applied to principal every month from the first payment. Method: How the calculator works. For more ways to speed up a car loan, read How to pay off a car loan faster: 6 ways, with real numbers.

Check these things before you pay extra

  1. Prepayment penalty. According to the CFPB, your contract and state law determine whether you can pay off an auto loan early. Look at your contract and your Truth in Lending disclosures.
  2. Principal, not future payments. The CFPB explains that payments are generally applied to fees first, then interest, then principal. Ask your lender how to apply extra money to principal and confirm it on your statement.
  3. Debt at a higher rate. If another debt costs more than your car loan, paying that one first generally avoids more interest.
  4. Your safety net. Money sent to a loan is hard to get back; keep an emergency fund first.

Frequently asked questions

How does a car loan extra payment calculator work?
You enter your remaining balance, interest rate, remaining term and the extra amount. The calculator rebuilds the loan month by month, applies the extra money to principal, and shows the interest you save, the months you cut and your new payoff date.
How much does an extra $100 a month save on a car loan?
On a $28,000, 60-month car loan at 7.5%, an extra $100 a month saves about $1,036 in interest and ends the loan 10 months early.
Do extra payments go to principal automatically?
Not necessarily. The CFPB notes that payments are generally applied to fees first, then interest, then principal. Check your loan documents, ask your lender how to apply extra money to principal, and review your statement to confirm.
Is there a penalty for paying off a car loan early?
It depends. According to the CFPB, your contract and state law determine whether you can pay off an auto loan early, and some states ban prepayment penalties for certain loans. Check your contract and your Truth in Lending disclosures.
Can I use this calculator for other loans?
Yes. It works for any fixed-rate loan, including mortgages, student loans and personal loans. Enter the balance, rate and remaining term of the loan.

Sources

This page is educational and not financial, legal or tax advice. Estimates assume a fixed rate and that extra money is applied to principal. Confirm the terms of your own loan with your lender.