Bankrate.com/calculators/auto/auto-Loan-Calculator.aspx
'/%3E%3Ccircle cx='48' cy='39' r='19' fill='%23f2c9a5'/%3E%3Cpath d='M27 35c3-16 39-17 42 2-8-8-27-9-42-2z' fill='%23374151'/%3E%3Cpath d='M21 86c5-24 49-28 56 0z' fill='%232563eb'/%3E%3Ccircle cx='41' cy='41' r='2' fill='%23111827'/%3E%3Ccircle cx='55' cy='41' r='2' fill='%23111827'/%3E%3Cpath d='M42 52c4 3 9 3 13 0' stroke='%2392400e' stroke-width='3' fill='none' stroke-linecap='round'/%3E%3C/svg%3E)
Reviewed by Calculator Editorial Team
An auto loan calculator helps you estimate your monthly payments, total interest costs, and loan affordability. By entering your loan amount, interest rate, and loan term, you can quickly see how different terms affect your monthly payments and overall cost of borrowing.
How to Use This Calculator
Using the auto loan calculator is simple:
- Enter the loan amount you're planning to borrow.
- Input the annual interest rate (APR) offered by the lender.
- Select the loan term in years.
- Click Calculate to see your estimated monthly payment and total interest.
The calculator uses the standard amortization formula to compute your payments. You can adjust any value to see how it affects your loan.
Formula Used
The monthly payment for an auto loan is calculated using the following formula:
Monthly Payment = P × (r(1 + r)^n) / ((1 + r)^n - 1)
Where:
- P = Principal loan amount
- r = Monthly interest rate (annual rate divided by 12)
- n = Number of payments (loan term in years × 12)
This formula accounts for the interest you'll pay over the life of the loan, not just the principal amount.
Worked Example
Let's calculate a monthly payment for a $25,000 loan at 4.5% APR over 5 years:
- Convert the annual rate to a monthly rate: 4.5% ÷ 12 = 0.375% or 0.00375 in decimal.
- Calculate the number of payments: 5 years × 12 = 60 payments.
- Plug the values into the formula:
Monthly Payment = $25,000 × (0.00375(1 + 0.00375)^60) / ((1 + 0.00375)^60 - 1)
= $25,000 × (0.00375 × 1.231) / (1.231 - 1)
= $25,000 × (0.00458) / 0.231
= $25,000 × 0.01987
= $496.75
Your estimated monthly payment would be $496.75, with a total interest of $1,950 over the life of the loan.
Interpreting Results
When you use the auto loan calculator, pay attention to these key metrics:
- Monthly Payment: This is the amount you'll pay each month, including principal and interest.
- Total Interest: This shows how much extra you'll pay beyond the original loan amount.
- Total Cost: The sum of your loan amount and total interest.
Lower monthly payments often come with higher interest costs, so compare different loan terms to find the best balance for your situation.
Remember that these are estimates. Your actual payments may vary based on the lender's specific terms and any additional fees.
Frequently Asked Questions
What is the difference between APR and interest rate?
APR (Annual Percentage Rate) is the total cost of credit over one year, including any fees. The interest rate is the portion of APR that goes toward interest, excluding fees.
How do I lower my auto loan payments?
You can lower payments by increasing your down payment, extending the loan term, or negotiating a lower interest rate.
Is it better to pay off my auto loan early?
Paying off early can save you money on interest, but it may cost you if you have to pay prepayment penalties. Check your loan agreement for details.