Estimate your monthly car payment, total interest, and total cost. Includes tax, trade-in, and full amortization.
Enter vehicle price, down payment, and loan terms to see your monthly payment
Subtract down payment and trade-in value from the vehicle price to get your actual loan amount.
Using the amortization formula, we calculate your fixed monthly payment over the loan term.
Each payment splits into principal and interest, with early payments favoring interest.
Type the negotiated price and any down payment, trade-in, or dealer rebate. The loan amount is price minus down payment.
Type the APR (annual percentage rate) and loan term in months or years. Most auto loans are 36-72 months; longer terms lower payments but cost more interest.
Enter your states sales tax rate. We compute tax on the vehicle price and add it to the loan principal so the monthly payment is accurate.
For related calculations, try our loan calculator.
Cross-checked against authoritative formulas (IRS, NIST, ACM) and updated for 2025/2026 tax years and rates.
No server roundtrip. All math runs in your browser so results appear the moment you finish typing.
We never collect, store, or transmit your inputs. Every calculation runs locally in your browser.
Each calculator includes the formula, plain-English explanation, and FAQs so you understand the result.
Estimates only. Calculator results are for educational and planning purposes — not professional advice. For binding decisions on taxes, investments, health, or legal matters, consult a qualified professional.
FAQ
Everything you need to know about this calculator. Can't find what you're looking for? Email our team.
Most auto loans require 660+ for prime rates, 600-659 for near-prime, and below 600 for subprime (higher rates). Our auto loan calculator lets you enter any interest rate to model the difference. A 50-point credit improvement can save 1-2% on the rate, which on a $30,000 5-year loan equals $1,500-3,000 in interest.
How it works
Our auto loan calculator lets you estimate your monthly car payment, total interest, and total cost based on price, rate, and term in four steps.
Type the negotiated price of the vehicle. Do not include taxes and fees - those are added separately by the lender.
Type any cash down payment and the value of your trade-in. The loan amount is price minus these two amounts.
Type the annual percentage rate the lender offered, and the loan length in months. Most auto loans are 36 to 72 months.
The calculator shows your monthly payment, total interest paid, total cost of the loan, and the loan amount financed.
Learn how to calculate car loan payments, understand dealer financing, and get the best auto loan rate.
Learn what APR is, how it differs from interest rate, and why it matters for auto loans.
Learn how loan amortization works, why early payments are mostly interest, and how to save money.