Car Payment Truth Calculator is a free, independent tool built around one idea: the monthly payment a dealer quotes you isn't the price of the car. A longer loan term can make almost any vehicle look affordable on a monthly basis while quietly adding thousands of dollars in extra interest over the life of the loan. This calculator exists to make that trade-off visible before you sign.
A browser-based calculator that takes the numbers a dealer or lender gives you -- price, down payment, trade-in, APR, tax, fees, and term -- and shows the amount financed, total interest, and true total cost, including a side-by-side comparison across every common loan term (36-84 months). See the methodology page for the exact formula and assumptions.
This site isn't a lender, dealer, broker, or financial advisor, and it doesn't sell leads to one. It doesn't require an account, doesn't collect the numbers you enter, and doesn't make loan offers. It's a calculator, not financial advice -- see the disclaimer for specifics.
The site is free to use and supported by Google AdSense advertising, not by lender referral fees. See the privacy policy for how advertising cookies work here.
Get in touch on the contact page.