Auto Loan Calculator
Calculate a car loan payment, total interest, and total paid from amount financed, APR, and term. Free auto loan calculator.
How to use this auto loan calculator
Car payments are just amortized loans. The trap is a long term that hides a high price. Enter the amount you will finance after down payment and trade-in, then look at total interest—not only the monthly number.
Formula
Worked example
A $30,000 five-year loan at 6.9% is about $593 per month.
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Frequently asked questions
Is this auto loan calculator free?
Yes. It works instantly in your browser with no signup.
Are the results exact?
Results follow the stated formula, but real-world fees, timing, and rounding can vary.
How do I calculate a car payment?
Use amount financed (price minus down and trade), APR, and term in months. Payment = P[r(1+r)^n]/[(1+r)^n−1].
Should I take a longer auto loan?
A 72- or 84-month term lowers the payment but increases total interest and the chance you owe more than the car is worth.
Does this include sales tax and fees?
Only if you fold them into the amount financed. Add tax, title, and dealer fees to the principal for a realistic payment.
What is a good auto loan APR?
It depends on credit, new vs used, and term. Compare the APR on the contract, not the weekly payment in an ad.
Results are estimates for informational purposes and are not financial, legal, or professional advice. Last reviewed 2026-08-20.