Estimate Monthly Car Payments and Total Loan Cost
How This Calculator Works
This tool estimates your monthly car loan payments using a standard loan amortization method. It takes into account the vehicle price after adding taxes and subtracting your down payment and trade-in value. It also uses your interest rate and loan term to calculate your repayment schedule.
Loan Payment Formula
M = P × [r(1 + r)ⁿ] / [(1 + r)ⁿ – 1]- M: Monthly payment
- P: Total loan amount
- r: Monthly interest rate (annual rate ÷ 12 ÷ 100)
- n: Total number of months
Step-by-Step Calculation Process
- Start with the vehicle price and add applicable sales tax
- Subtract your down payment and any trade-in value
- Convert the annual interest rate into a monthly rate
- Apply the amortization formula to calculate monthly payment
- Multiply the monthly payment by the loan term to get total repayment amount
- Subtract the original loan amount to find total interest paid
Data Sources
- Standard bank amortization formulas used in auto financing
- Basic compound interest calculation principles
- Truth in Lending Act (TILA) guidelines for loan transparency
Important Note
All results are estimates only. Actual loan payments may vary depending on your credit score, lender policies, fees, and other financial conditions.