Auto loan calculator

The monthly payment comes from the standard amortization formula applied to what you actually finance: price minus down payment and trade-in. The interest total comes from a month-by-month pass, so the final payment is whatever balance remains rather than a rounded overshoot. Tax, title, and registration fees are not modeled; dealers usually fold them into the amount financed, so add them to the vehicle price yourself if your deal does that. This is arithmetic, not financial advice, and no lender offer is checked or fetched.