Estimate your monthly payment before you visit the dealer. Adjust the price, down payment, rate and term.
Estimate only. Your actual rate and payment depend on credit, lender and fees.
Four numbers decide your monthly car payment, and the calculator above lets you change each one to see what happens. The first is the amount financed, which is the vehicle price minus your down payment and any trade-in value. The second is the annual percentage rate (APR), the yearly cost of borrowing. The third is the term, the number of months you take to pay it back. The fourth, which falls out of the first three, is the total interest you will pay over the life of the loan.
The math behind it is the standard amortizing-loan formula: each month you pay a little interest on the balance that remains, plus a slice of the principal, until the balance reaches zero. Early in the loan most of your payment goes to interest; later, most of it goes to principal. The calculator does this for you instantly, so you can see not just the monthly number a dealer will quote you, but the total cost you will actually pay.
Dealers and lenders sometimes quote an interest rate that sounds lower than the APR. The interest rate is the cost of the money alone. The APR rolls in certain required fees as well, which is why it is usually the more honest number to compare across offers. When you shop financing, compare APR to APR. A difference of even one or two points, multiplied across a five or six year loan, can be hundreds or thousands of dollars. Plug both quotes into the calculator and look at the total cost line, not just the monthly payment.
It is tempting to stretch a loan to 72 or 84 months because the monthly payment drops. Try it in the calculator: take the same price and rate, and switch the term from 60 months to 84. The monthly payment falls, but the total interest climbs, often by a lot. A longer loan also raises the risk of going “underwater,” owing more than the car is worth, because cars lose value faster than a long loan pays down. As a rule of thumb, the shortest term you can comfortably afford is the cheapest one in the long run.
Walking in with a target payment and a known total cost is the single best way to avoid being “sold a payment” instead of a price. If a dealer can only hit your monthly number by stretching the term, you now know exactly what that is costing you.
Here is the part most payment calculators never mention: the biggest financial risk in a used-car purchase is usually not the interest rate, it is buying the wrong car. A great rate on a vehicle with an unrepaired safety recall, a chronic transmission defect, or a salvage title is still a bad deal. The interest you might save by shopping rates is small next to the thousands you can lose on a car with hidden problems.
That is why the smart order of operations is to check the car first, then finance it. Before you sign anything, run the VIN through Carchieve to surface open recalls, owner complaints, crash-test performance, and a guided title and odometer check. If you want the full pre-purchase routine, our used-car buying checklist covers both the records and the in-person inspection, and our guide to spotting odometer fraud shows how mileage tampering quietly inflates a car's price.
Is this calculator free? Yes, completely, with no account required. Adjust the numbers as many times as you like.
Does it include taxes and fees? The estimate covers principal and interest. Sales tax, registration and dealer fees vary by state and deal, so add them to the price field if you want the all-in number.
What APR should I expect? It depends heavily on your credit score, the lender and whether the car is new or used. Get pre-approved by your own bank or credit union before you visit the dealer so you have a real number to compare against.
Should I put more money down? A larger down payment lowers the amount financed, the monthly payment and the total interest, and it reduces the chance of going underwater. Try different down-payment amounts above to see the effect.