Bankrate Auto Calculator
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Reviewed by Calculator Editorial Team
Use our Bankrate Auto Calculator to estimate your monthly auto loan payments, total interest costs, and other key financial details. This tool helps you compare different financing options and make informed decisions when purchasing a new or used car.
How to Use This Calculator
To use the Bankrate Auto Calculator, follow these simple steps:
- Enter the loan amount - the total price of the vehicle you're financing.
- Select the loan term - the length of your loan in years.
- Enter the interest rate - the annual percentage rate (APR) offered by your lender.
- Enter the down payment - the amount you're putting toward the vehicle upfront.
- Click the Calculate button to see your estimated monthly payment and other financial details.
The calculator will display your estimated monthly payment, total interest paid over the life of the loan, and the total amount paid (principal + interest).
Formula Used
The Bankrate Auto Calculator uses the standard auto loan payment formula:
Monthly Payment = P × (r(1 + r)^n) / ((1 + r)^n - 1)
Where:
- P = Principal loan amount (loan amount - down payment)
- r = Monthly interest rate (annual rate ÷ 12)
- n = Number of payments (loan term in years × 12)
This formula calculates the fixed monthly payment for an auto loan with a constant interest rate.
Worked Example
Let's calculate the monthly payment for a $25,000 loan with a 4.5% APR over 5 years with a $5,000 down payment.
- Principal (P) = $25,000 - $5,000 = $20,000
- Monthly interest rate (r) = 4.5% ÷ 12 = 0.375% or 0.00375
- Number of payments (n) = 5 × 12 = 60
- Plugging into the formula:
Monthly Payment = $20,000 × (0.00375(1 + 0.00375)^60) / ((1 + 0.00375)^60 - 1)
= $20,000 × (0.00375 × 1.00375^60) / (1.00375^60 - 1)
= $20,000 × (0.00375 × 1.2536) / (1.2536 - 1)
= $20,000 × (0.00467) / 0.2536
= $20,000 × 0.0184
= $368.00
The estimated monthly payment for this example would be $368.00.
Interpreting Results
When you use the Bankrate Auto Calculator, you'll receive several key financial details:
- Monthly Payment - The amount you'll pay each month toward your loan.
- Total Interest - The total amount of interest you'll pay over the life of the loan.
- Total Amount Paid - The sum of your principal and interest payments.
These figures help you understand the true cost of financing your vehicle and compare different loan options.
Tip: Always compare multiple quotes from different lenders to ensure you're getting the best possible rate and terms.