This auto loan calculator works out your monthly car payment from the vehicle price, down payment, trade-in value, sales tax, and fees, then finances the remainder over your chosen loan term and interest rate. It supports multiple regions and currencies, adjusting labels for things like India’s ex-showroom/on-road pricing convention.
How to use this auto loan calculator
- Choose your region and currency — this adjusts field labels and adds region-specific charges where relevant.
- Enter the vehicle price, down payment, and trade-in value (if any).
- Enter your sales tax rate and any fees.
- Enter the APR and loan term in months, then the calculator computes your monthly payment.
How the loan amount and payment are calculated
Amount Financed = Price + Tax + Fees − Down Payment − Trade-In Value
Sales tax is typically calculated on the price after trade-in credit is applied in many regions, and fees are added on top. The amount financed is then run through the standard amortizing loan payment formula using your APR and term to produce the fixed monthly payment.
Why down payment and trade-in matter so much
Every dollar of down payment or trade-in value reduces the amount financed directly, which lowers both your monthly payment and the total interest paid over the loan term. Because interest compounds on a smaller principal balance, a larger upfront reduction can meaningfully shorten how much you pay in total, not just spread the same total differently.
Frequently asked questions
Is sales tax calculated before or after my trade-in credit?
This varies by region — many places apply trade-in credit before calculating tax, reducing the taxable amount, while others tax the full price. Selecting your region adjusts the calculation and labeling to match local convention.
Does a longer loan term always mean I pay more interest?
Generally yes — spreading the same amount financed over more months lowers the monthly payment but increases the total interest paid, since the balance takes longer to pay down. Use the calculator to compare terms side by side before deciding.
Can I use this for a used car purchase?
Yes. The calculator doesn’t distinguish between new and used vehicles — enter the actual purchase price, applicable tax rate, and any fees for your specific deal either way.
