Auto Loan Refinance Calculator

Compare your current auto loan against a potential refinance offer to see how much you could save. Enter your remaining balance, current interest rate, remaining term, and your new loan details — the calculator returns your new monthly payment, monthly savings, and total interest saved over the life of the loan.

The amount you still owe on your existing auto loan.

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The annual interest rate on your current auto loan.

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How many months remain on your current loan.

Optional: your existing monthly payment for reference.

The amount you plan to refinance. Often the same as your remaining balance.

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The annual interest rate offered on your new refinance loan.

The length of your new refinance loan.

Any upfront cash you plan to put toward the refinanced loan.

Results

New Monthly Payment

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Current Monthly Payment (Calculated)

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Monthly Savings

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Total Interest — Current Loan

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Total Interest — New Loan

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Total Interest Saved

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Total Cost of New Loan

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Current vs. Refinanced Loan Comparison

Results Table

Frequently Asked Questions

What is auto loan refinancing?

Auto loan refinancing means replacing your existing car loan with a new loan — typically from a different lender — that has a lower interest rate, different loan term, or both. The goal is usually to reduce your monthly payment, lower your total interest costs, or both.

When does it make sense to refinance my auto loan?

Refinancing makes the most sense when interest rates have dropped since you took out your original loan, your credit score has improved, or you initially financed through a dealership at a higher rate. Generally, the earlier in your loan term you refinance, the more interest you can save.

Will refinancing lower my monthly payment?

It depends on your new interest rate and loan term. A lower rate with the same term will reduce your payment. Extending your loan term can also reduce monthly payments, but may increase the total interest you pay over time. This calculator shows both scenarios side by side.

What is the 'remaining balance' I should enter?

Your remaining balance is the current payoff amount on your existing auto loan — the amount you still owe the lender today. You can find this on your most recent loan statement or by calling your lender for a payoff quote.

Does extending my loan term save money?

Extending your term lowers your monthly payment, but you'll typically pay more interest overall since you're borrowing for a longer period. Shortening the term raises your monthly payment but reduces total interest. The best choice depends on your cash flow needs and financial goals.

What factors affect the interest rate I'll get on a refinance?

Your new interest rate will depend primarily on your credit score, the age and mileage of your vehicle, the loan term length, and the lender you choose. Improving your credit score before applying is one of the best ways to secure a lower refinance rate.

Are there fees involved in refinancing an auto loan?

Some lenders charge origination fees, and your state may require you to retitle the vehicle which involves a small fee. However, many auto refinance lenders charge no fees at all. Always ask for the full cost disclosure before signing a new loan agreement.

How does a down payment affect my refinance?

Applying a cash down payment at refinancing reduces the amount you need to borrow, which lowers both your monthly payment and total interest paid. Enter any planned upfront cash in the 'Down Payment' field to see how it impacts your savings.

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