Car Loan Calculator with transparent formulas, clear units, and instant results. Monthly payment: A = P × i × (1+i)ⁿ ÷ ((1+i)ⁿ−1); P = V − D.
Stable formula
This calculator uses a stable mathematical formula. Always verify the values you enter.
Accuracy level
High when inputs and units are correct.
Last reviewed
July 9, 2026
Formula or source
Stable mathematical formula explained on the page.
Guide reading time
4 min
Confidence
High for the stated calculation.
Result type
Formula result, not an official certification.
Do not use for: Cases with missing data, unclear units, or a required professional certification.
How Car Loan Calculator works
The Car Loan Calculator uses these inputs: Vehicle price, Down payment, Annual interest rate (%), Term (months), One-time fee. Its primary output is Monthly payment. The calculation separates vehicle price, financing, fees, down payment, and residual value to avoid double counting.
The engine implements A = P × i × (1+i)ⁿ ÷ ((1+i)ⁿ−1); P = V − D. Validation runs first to reject zero divisors and non-finite values.
Numeric example using the starting values: Car Loan Calculator: Currency: USD · Vehicle price: 150000 · Down payment: 30000 · Annual interest rate (%): 6. The resulting output is Monthly payment: $2,319.94.
Car Loan Calculator: Limitation for Monthly payment: the estimate covers only the displayed fields and does not model unentered road, wear, fitment, legal, or tariff conditions. Rates, taxes, credit terms, and fees vary by lender and jurisdiction.
💡 Useful Tips
Do not mix units between Vehicle price and Down payment; make sure both describe the same scenario. Compare the output with a written finance quote that lists every fee.
Do not treat Car Loan Calculator — Monthly payment as mechanical, safety, legal, or financial approval.
Frequently Asked Questions
What does Monthly payment mean?
It is the direct output of the formula and entered values, and applies only to the defined scenario.
Which inputs change the result?
The active inputs are Vehicle price, Down payment, Annual interest rate (%), Term (months), One-time fee. Changing any one runs the same formula again. The result is a cash-flow comparison, not financial advice or a credit offer.
What to check next
The result is a starting point. For a clearer picture, continue to a related calculator or read a short guide that explains the assumptions.