Car Loan Calculator 🚗

This calculator builds your real financed amount step by step, the way a dealership finance office actually does it — not just vehicle price divided by months. It starts with the vehicle price, subtracts any manufacturer cash incentives or rebates, subtracts your trade-in's equity (its value minus whatever you still owe on it), adds sales tax on the post-incentive, post-trade-in amount, adds title/registration/documentation fees (which typically aren't taxed), and then subtracts your down payment. What's left is the actual amount you're borrowing — which is often meaningfully different from the number on the windshield.

Amount Financed = (Vehicle Price − Cash Incentives − Trade-In Equity + Sales Tax + Negative Equity + Title/Registration Fees) − Down Payment. Trade-In Equity = Trade-In Value − Amount Still Owed. Monthly Payment = standard amortization formula on the financed amount.

Use this before you sit down at the dealership, not after the finance manager hands you a number. Knowing your real monthly payment — incentives, tax, fees, and trade-in all included — means you can negotiate the vehicle price with confidence instead of anchoring on 'can I afford the monthly payment they quoted me.' It's also the fastest way to see whether a trade-in or a rebate is actually helping you or just making the math feel better without changing much.

Sales tax rules vary by province and state — some tax the full vehicle price regardless of trade-in or incentives, others only tax the amount after those credits (this calculator assumes the latter, which is more common but not universal). Manufacturer incentives sometimes come with conditions (financing through the manufacturer's own lender, specific trim levels, limited-time windows) that this calculator can't verify for you. Title, registration, and documentation fees also vary by state, province, and even by dealership — the amount here is a placeholder, not a quote. Get the dealer's actual out-the-door number before signing.