Free calculator

Auto Loan Refinance Calculator

Compare your current auto loan with a new APR and term to estimate monthly savings and total interest savings.

Estimated result

$0 monthly payment
Amount financed$0
Total interest$0
Total monthly cost$0
Budget signalEstimate

Educational estimate only. Actual loan, insurance, tax, and fee amounts vary.

Default APR reference 7.36%
Insurance baseline $1,438/yr
Best use Compare scenarios

Refinance savings need two checks

A refinance can lower the payment, lower the APR, shorten the payoff timeline, or some combination of those. The safest comparison looks at both the monthly payment and total interest.

A lower monthly payment is not automatically a cheaper loan if the new term stretches the debt much longer.

  • Compare the remaining cost of your current loan against the full cost of the new loan.
  • Include refinance fees if they apply.
  • Check whether your lender applies extra payments to principal.

When refinancing often makes sense

It is most compelling when rates have fallen, your credit profile has improved, or the original dealer-arranged financing was not competitive.

It can also help cash flow, but cash-flow relief should be weighed against any extra interest from extending the term.

Watch the vehicle value

Refinancing can be harder if the vehicle is worth less than the loan balance, has very high mileage, or is older than the lender allows.

If the calculator shows only small savings, fees and title work may outweigh the benefit.

Methodology

The loan payment is calculated with standard amortization: vehicle price plus estimated taxes and fees, minus down payment and trade-in value. Insurance defaults use the NAIC 2023 countrywide average expenditure unless a state-specific page is selected. Fuel, maintenance, and registration defaults are planning assumptions that should be edited for your vehicle and location.

The default APR reference is 7.36% from the Federal Reserve 48-month new auto loan rate series for February 2026. The countrywide insurance baseline is the NAIC 2023 average expenditure figure. None of these defaults are offers, quotes, or approval estimates.

This page is intentionally built for estimates. Replace every default with numbers from your lender, dealer, insurer, and state registration office before making a buying decision.

FAQ

Can refinancing increase total interest?

Yes. A lower payment with a much longer term can cost more over the life of the loan.

Should I refinance only for a lower APR?

APR matters, but fees, remaining term, vehicle value, and credit profile also matter.

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