Finance
Auto Loan Calculator
Estimate car loan payments with taxes and fees.
Monthly payment
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Total loan amount
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Total interest
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FAQ
- How is the auto loan monthly payment calculated?
- The loan principal equals the vehicle price minus down payment and trade-in value, plus sales tax applied to the vehicle price. The monthly payment uses the standard amortization formula: M = P * r * (1 + r)^n / ((1 + r)^n - 1), where P is the principal, r is the monthly interest rate, and n is the number of monthly payments.
- Why is sales tax added to the loan amount?
- Sales tax is typically rolled into the financed amount when buying a vehicle. It is calculated on the vehicle price before deducting the down payment or trade-in, which is the standard practice at most dealerships.
- Is my data sent anywhere?
- No. All calculations run entirely in your browser; no data is uploaded or stored.