Auto Loan Calculator

Amount financed is the vehicle price less down payment and trade-in credit, with sales tax included according to the calculator inputs. A fixed monthly loan payment then amortizes that amount.

With $26,000 financed at 8.4% over 72 months, the payment is approximately $460.96 and total interest $7,189.05. Over 48 months it is approximately $639.63, with $4,702.20 interest. Fees and tax can change the amount financed.

Use an out-the-door quote. Check whether trade-in tax treatment in your state matches the simplified inputs, and compare term length alongside insurance, repairs and fuel costs.

Negative trade-in equity, dealer fees, rebates with special tax treatment and depreciation are not automatically captured. The payment is not a guarantee of financing eligibility.

Start with the vehicle price you are actually negotiating, rather than a monthly payment advertised on the dealer's website. Enter your cash down payment and the trade-in value separately. The calculator applies the entered sales-tax percentage to the full vehicle price, then subtracts those two amounts. That is the specific tax convention used here. Some jurisdictions calculate tax differently, including credits for trade-ins, so a dealer's financed amount may not match this simplified estimate.

The loan term is entered in months. A five-year agreement is 60 months; entering 5 would describe a very different loan. Use the annual interest rate from the financing proposal, and keep fees outside the model unless you have carefully reconciled them with the price. If you still owe money on your trade-in, its stated value is not necessarily available equity. This form has no separate trade-in payoff field, so it cannot untangle that balance for you.

Suppose a vehicle costs $20,000, the entered tax rate is 5%, your cash deposit is $3,000, and the trade-in contributes $2,000 with no outstanding loan. Under this form's convention, tax adds $1,000 and the financed amount becomes $16,000. At an illustrative zero interest rate over 48 months, the payment is $333.33 when rounded. This example is an arithmetic check; it does not represent a current offer, a dealer quote or a tax rule for your location.

If your own quote finances a different amount, resolve that difference first. An extended warranty, documentation fee, registration charge or rolled-in negative equity can change the starting principal. Comparing interest rates while ignoring those additions is misleading. Two proposals can show similar monthly payments while financing quite different purchases. Ask for the cash price, itemized charges, trade allowance, trade payoff and financed amount on paper so you can see where each dollar enters the agreement.

Run the same principal and rate with two repayment periods. A longer term usually lowers the scheduled monthly payment but increases total interest at a positive rate. The payment can fit your budget while the overall loan becomes more expensive. Compare both results, and consider how long you expect to keep the vehicle. A loan that extends beyond your likely ownership period deserves a separate look at the outstanding balance and the car's possible resale value.

This calculator does not predict depreciation or tell you when you will have positive equity. A down payment reduces the amount borrowed, but it cannot guarantee that the car will always be worth more than the remaining debt. Vehicle condition, mileage, market prices and the repayment schedule all matter. Treat the estimated interest cost as one part of the purchase decision alongside operating costs, insurance and maintenance, rather than as a complete measure of whether the vehicle is affordable.

Compare offers using the same purchase price and the same repayment period wherever possible. A promotional rate may come with conditions or replace a cash discount, so examine the whole offer rather than the headline percentage. The rate entered here is used as a constant annual rate in a monthly-payment formula. It does not evaluate lender fees or determine which financing arrangement is best. A smaller advertised rate alone does not settle the total-cost comparison.

Check whether the written agreement permits early repayment and whether any charge applies. Those contract terms are not inputs in this form. Nor does the calculation assess your credit eligibility, approve financing or recommend gap coverage. If an output looks unexpectedly small, confirm that the down payment and trade-in were not counted twice. If they cover the modeled vehicle cost, the form will not produce a loan payment because there is no positive principal left to finance.