Auto Loan Calculator

Estimate your car payment from price, down payment, trade-in, tax and rate.

Estimate Your Car Payment

This auto loan calculator estimates your monthly car payment from the vehicle price, your down payment, any trade-in value, sales tax and the loan rate and term. Adjust the numbers to see what fits your budget before you visit a dealer. Everything is calculated in your browser, so nothing is uploaded.

How the loan amount is worked out

Your loan amount is the vehicle price plus sales tax, minus your down payment and any trade-in value. A larger down payment or trade-in lowers the amount you finance, which lowers both your monthly payment and the total interest you pay.

Why the term matters

Car loans commonly run from 36 to 72 months or longer. A longer term reduces the monthly payment but increases total interest, and it raises the risk of owing more than the car is worth as it depreciates. A shorter term costs more per month but far less overall.

Watch the total cost, not just the payment

Dealers often focus on the monthly payment, because a long term can make almost any car look affordable. The figures that matter are the total of payments and the total interest. Use those to compare offers and decide how much car you can truly afford.

Tips for a better deal

  • Get pre-approved by a bank or credit union to compare against dealer financing.
  • Negotiate the price first, then discuss financing separately.
  • Put more down to reduce interest and avoid being underwater.

Estimates only — not financial advice. Taxes, fees and rates vary by location and lender.

Frequently asked questions

How is my car payment calculated?

The calculator adds sales tax to the price, subtracts your down payment and trade-in to find the loan amount, then applies the standard amortization formula.

Does a trade-in lower my payment?

Yes. A trade-in reduces the amount you need to finance, which lowers both the monthly payment and total interest.

What loan term should I choose?

A shorter term costs more per month but less overall and reduces the risk of owing more than the car is worth. Longer terms lower the monthly payment but raise total interest.

Should I include sales tax?

Yes, if your area taxes vehicle purchases. Including it gives a more realistic loan amount and payment.