Car Payment Calculator

Car payments are calculated using the loan amortization formula: M = P × [r(1+r)^n] / [(1+r)^n - 1], where:

• M = monthly payment
• P = principal (vehicle price minus down payment and trade-in)
• r = monthly interest rate (annual rate ÷ 12 ÷ 100)
• n = number of monthly payments

This formula ensures equal monthly payments throughout the loan term, with the interest-to-principal ratio shifting over time.

Interest rates vary based on credit score, loan term, and whether the vehicle is new or used. As of 2024-2025, typical ranges are:

• Excellent credit (750+): 4.5% – 6.5% APR
• Good credit (700-749): 6% – 9% APR
• Fair credit (650-699): 9% – 13% APR
• Used vehicles: typically 1-2% higher than new

Rates below 6% are generally considered favorable for new vehicles with good credit.

Yes. A larger down payment reduces the loan principal, which directly lowers your monthly payment and the total interest paid over the life of the loan.

Example: On a $30,000 car with 6% APR over 60 months, a $5,000 down payment (vs. $0) reduces the monthly payment by about $97 and saves roughly $800 in total interest.

It depends on your priorities. Longer terms (72-84 months) result in lower monthly payments but higher total interest costs. Shorter terms (36-48 months) have higher monthly payments but save money overall.

Example: A $25,000 loan at 7% APR costs about $2,700 in interest over 36 months, but nearly $6,400 over 72 months—more than double.

Trade-in value works like an additional down payment—it reduces the amount you need to finance. If you trade in a vehicle worth $8,000 on a $35,000 car, you only finance $27,000 (assuming no down payment). This lowers both your monthly payment and total interest paid.

For most car loans, APR (Annual Percentage Rate) and interest rate are the same or very similar. APR includes the interest rate plus any mandatory fees rolled into the loan. Unlike mortgages, car loans rarely have significant additional fees, so the two numbers are typically identical.

A 20% down payment is a common guideline that helps avoid being "underwater" (owing more than the car is worth) and typically qualifies you for better interest rates. However, there's no universal rule—the right amount depends on your budget, the vehicle's depreciation rate, and available financing offers.

Total cost equals: monthly payment × number of payments + down payment.

Example: If your monthly payment is $450 for 60 months with a $3,000 down payment, total cost = ($450 × 60) + $3,000 = $30,000. This includes both principal and interest paid to the lender.

Paying off early typically saves money on interest since you stop accruing charges once the principal is paid. However, some lenders charge prepayment penalties. Check your loan terms before making extra payments or paying off the balance early.

Yes. This calculator uses the standard amortization formula used by lenders. The results match what you'd see from banks and dealerships for simple interest auto loans. Note that actual payments may vary slightly due to rounding, fees, or specific lender terms.

Car payments are calculated using the loan amortization formula: M = P × [r(1+r)^n] / [(1+r)^n - 1], where M is the monthly payment, P is the principal (vehicle price minus down payment and trade-in), r is the monthly interest rate (annual rate ÷ 12 ÷ 100), and n is the number of monthly payments. This formula ensures equal monthly payments throughout the loan term.

Interest rates vary based on credit score, loan term, and whether the vehicle is new or used. As of 2024-2025, new car loan rates typically range from 5% to 10% APR for borrowers with good credit, while used car loans often run 1-2% higher. Rates below 6% are generally considered favorable for new vehicles.

Yes. A larger down payment reduces the loan principal, which directly lowers your monthly payment and the total interest paid over the life of the loan. For example, on a $30,000 car with 6% APR over 60 months, a $5,000 down payment (vs. $0) reduces the monthly payment by about $97 and saves roughly $800 in total interest.

Longer loan terms (72-84 months) result in lower monthly payments but higher total interest costs. Shorter terms (36-48 months) have higher monthly payments but save money overall. A $25,000 loan at 7% APR costs about $2,700 in interest over 36 months, but nearly $6,400 over 72 months—more than double.

Trade-in value works like an additional down payment—it reduces the amount you need to finance. If you trade in a vehicle worth $8,000 on a $35,000 car, you only finance $27,000 (assuming no down payment). This lowers both your monthly payment and total interest paid.

For most car loans, APR (Annual Percentage Rate) and interest rate are the same or very similar. APR includes the interest rate plus any mandatory fees rolled into the loan. Unlike mortgages, car loans rarely have significant additional fees, so the two numbers are typically identical.

A 20% down payment is a common guideline that helps avoid being 'underwater' (owing more than the car is worth) and typically qualifies you for better interest rates. However, there's no universal rule—the right amount depends on your budget, the vehicle's depreciation rate, and available financing offers.

Total cost equals monthly payment × number of payments + down payment + trade-in value used. For example, if your monthly payment is $450 for 60 months with a $3,000 down payment, total cost = ($450 × 60) + $3,000 = $30,000. This includes both principal and interest.