Auto Loan Refinance Calculator

Instantly calculate your new monthly payment, total interest and overall cost when refinancing an auto loan – free and instant.

  • Free
  • No sign-up
  • Instant results

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How to use it

  1. Enter loan amount, interest rate, and term.
  2. Click Calculate.
  3. Read monthly payment, total interest, and total of payments.

The Auto Loan Refinance Calculator lets you see exactly how a lower rate or different term changes the cost of your car loan. You input the current balance, the annual percentage rate you’re being offered, and the number of years you plan to pay. The tool instantly returns three numbers: the new monthly payment, the total interest you’ll pay over the life of the loan, and the overall amount you’ll have paid. Knowing the monthly payment helps you compare cash‑flow impact, while the total interest shows how much you’ll save versus your existing loan. The total of payments is simply the sum of all monthly installments, giving a clear picture of the end‑point cost. Use these figures to negotiate with lenders, decide if refinancing makes financial sense, or plan your budget with confidence.

Pro tips

  • Add a small buffer (e.g., $20) when rounding monthly payment to avoid shortfall.
  • Enter the exact APR, not just the advertised rate, for accurate interest.
  • If you have a balloon payment, add it to the loan amount before calculating.
  • Compare the total of payments, not just the monthly figure, to see true savings.

Real-life examples

  • A recent college graduate wants to lower her car payment to free up cash for student loans.
  • A small business owner is evaluating whether refinancing a fleet loan will reduce operating costs.
  • A retiree plans to refinance to a shorter term to pay off the loan before moving.

Case study

John had a $15,000 loan at 6.9% for five years. After entering his numbers, the calculator showed a new payment of $260, total interest $2,800 versus $3,500 before, letting him refinance and save $700.

Frequently asked questions

How does the calculator determine monthly payment?
It uses the loan amount, annual rate and term you enter to compute the standard amortization schedule.
Do I need to include taxes or fees?
Only the principal amount; add any fees to the loan balance before using the calculator.
Can I compare multiple refinance offers?
Run the calculator for each set of numbers and compare the monthly payment, total interest and overall cost.
Is the result affected by credit score?
The calculator itself doesn’t use credit score; it reflects the rates you input, which are influenced by your credit.
Is my data saved?
No, the tool works locally in your browser and does not store any personal information.