Calculate your auto loan payments
Auto loan payments use the standard amortization formula: Monthly Payment = P × (r(1+r)^n) / ((1+r)^n - 1), where P is the loan amount (vehicle price minus down payment and trade-in), r is the monthly interest rate, and n is the loan term in months.
Understanding your auto loan helps you stay within budget and avoid overextending financially. Cars depreciate quickly, so being "upside down" (owing more than the car is worth) is a common risk with long-term auto loans.
The calculator shows not just monthly payments but total interest paid and overall cost. Longer terms mean lower monthly payments but significantly more interest paid over the life of the loan.
Get pre-approved before shopping to know your budget and negotiate better. Aim for a down payment of at least 20% to avoid being upside down. Keep loan terms to 60 months or less. Check your credit score before applying.
A credit score of 740 or higher typically qualifies you for the best auto loan rates. Scores between 670-739 are considered good and still get competitive rates. Scores between 580-669 are subprime and result in higher rates, while scores below 580 may require a co-signer or larger down payment. Improving your credit score by even 50 points before applying can save you thousands over the life of the loan.
Financial experts recommend keeping auto loan terms to 60 months (5 years) or less for new cars and 36 months (3 years) or less for used cars. While longer terms of 72 or 84 months lower your monthly payment, they cost significantly more in total interest and increase the risk of being upside down on your loan, meaning you owe more than the car is worth.
Yes, used car loan rates are typically 1-2 percentage points higher than new car rates. New cars often qualify for promotional financing from manufacturers, sometimes as low as 0% APR. Used cars are considered higher risk by lenders because they have less predictable value and higher chance of mechanical issues. Shopping around and getting pre-approved can help you find the best rate regardless of vehicle type.