What we do
Figure My Car Payment is a free online auto loan calculator. Enter the vehicle price, your down payment, trade-in, sales tax rate, interest rate, and loan term, and it shows your estimated monthly payment along with the amount financed and — most importantly — the total interest you'll pay over the life of the loan.
Every input updates the results instantly, so you can see exactly how a bigger down payment, a shorter term, or a better interest rate changes what you'll pay each month and overall.
Why we built it
Car dealers love to negotiate in monthly payments, because almost any car can be made to "fit" a monthly number by stretching the loan longer — while thousands in extra interest hide in plain sight. We built this tool so you can see the whole picture, especially the total interest, and walk in knowing your numbers instead of reacting to theirs.
How our numbers work
We use the standard amortization formula that lenders use, applied to the amount financed (price plus estimated sales tax, minus down payment and trade-in). Sales tax is applied to the price after trade-in credit, which is common in most states though rules vary. Results are estimates for planning — your actual rate, taxes, and dealer fees depend on your lender and location.
Free and ad-supported
This tool is completely free. We keep it that way through advertising and never charge for calculations or hide features behind a paywall. We do not require an account and we do not sell your information — see our Privacy Policy for details. Questions or feedback? Visit our Contact page.