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Money calculators / Auto Loan Calculator

Auto Loan Calculator

Bring the purchase price, trade-in and taxes into one clear monthly-payment estimate.

Gross value offered for your vehicle, before its loan payoff.
Use the lender’s current payoff quote; it may differ from the statement balance.
Enter only charges added to the loan. Do not include cash-paid fees.
Choose your local rule. No tax jurisdiction is detected automatically.
Used only in custom mode. Include taxable fees or adjustments if your local rule requires them.
Enter the interest rate, before fees. Zero is supported.
Use a term that equals a whole number of months.
Added from the first payment, after interest. No prepayment penalty assumed.

All amounts use the selected currency. Changing its label does not convert values.

Tax rules vary by location, vehicle and transaction. This is a simplified estimate. Down payment and trade-in loan payoff do not reduce the tax base automatically.

What goes into the amount financed?

Amount financed = vehicle price + sales tax + financed fees + existing trade-in payoff − gross trade-in value − cash down payment. A trade-in with a payoff larger than its value has negative equity, which increases the new loan.

The tax modes apply a single entered percentage to either the full price, the price less gross trade-in value (floored at zero), or your custom taxable amount. They do not automatically handle rebates, tiered taxes, exemptions, taxable fees or local registration rules. Fees are not taxed automatically; use a custom taxable amount if needed. Cash-paid fees and insurance are not included in loan totals.

Example: a 30,000 vehicle, 10,000 trade-in, 13,000 payoff, 3,000 down payment, 500 financed fees and 6.25% tax result in 32,375 financed with full-price tax, or 31,750 with the trade-credit tax mode.

How the repayment estimate works

Payments occur at the end of equal monthly periods, with the first payment one month after the starting balance date. The interest rate stays fixed. Monthly interest equals the opening balance × annual rate ÷ 12, with the rate expressed as a decimal.

The regular payment uses the standard amortization formula. Monthly interest and payments are rounded to cents; the final payment is adjusted to clear the balance at or before the original term. Extra payments are applied after that month’s interest and shorten repayment. Totals are the sum of the schedule, so they can differ slightly from a lender’s calculation.

Amounts are rounded to two decimal places. Terms from 1 to 600 whole months, amounts from 1 to 100,000,000 and interest rates from 0% to 100% (up to six decimal places) are supported. These are calculator limits. Very long, high-rate scenarios may be rejected when cent rounding prevents the regular payment from reducing principal.

Common questions

Can I download or print the full amortization schedule?

Yes. Download CSV includes every monthly row and the calculation assumptions. Print / Save as PDF opens your browser’s print dialog; select Save as PDF if your browser offers it. If you add extra payments, choose either schedule before exporting.

Why is the final payment different?

Rounding regular payments and interest to cents can leave a small difference. The final payment is adjusted to repay exactly the remaining balance and that month’s interest.

Does changing currency convert the amounts?

No. It only changes the display label. Enter every amount in the same currency. The model assumes two decimal places and does not fetch exchange rates.

Check the rules that apply to you

CFPB explains negative equity and trade-in payoff quotes. Tax treatment is not universal: Texas describes a gross trade-in allowance, while California explains its vehicle-sales tax treatment. Confirm the taxable amount with your local authority or seller.