Auto Payment Interest Calculator
'/%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
Use this auto payment interest calculator to estimate your monthly car loan payments, total interest paid, and loan payoff time. Simply enter your loan amount, interest rate, and loan term to get instant results.
How to Use This Calculator
To calculate your auto loan payments:
- Enter the loan amount you're borrowing in the "Loan Amount" field.
- Input the annual interest rate in the "Interest Rate" field.
- Select the loan term in years from the dropdown menu.
- Click the "Calculate" button to see your results.
The calculator will display your monthly payment, total interest paid over the life of the loan, and the total amount paid (principal + interest).
Important Notes
This calculator provides estimates only. Actual payments may vary based on your lender's specific terms and any additional fees. Always check with your lender for precise details.
Formula Used
The calculator uses the standard auto loan payment formula:
Monthly Payment Formula
M = P [ i(1 + i)^n ] / [ (1 + i)^n - 1 ]
Where:
- M = Monthly payment
- P = Principal loan amount
- i = Monthly interest rate (annual rate divided by 12)
- n = Number of payments (loan term in years multiplied by 12)
Total interest paid is calculated by subtracting the original loan amount from the total amount paid.
Worked Example
Let's calculate a $25,000 auto loan at 4.5% annual interest for 5 years:
Example Calculation
Monthly interest rate = 4.5% ÷ 12 = 0.375% or 0.00375
Number of payments = 5 years × 12 = 60 months
Monthly payment = $25,000 [ 0.00375(1 + 0.00375)^60 ] / [ (1 + 0.00375)^60 - 1 ]
Monthly payment ≈ $465.24
Total amount paid = $465.24 × 60 = $27,914.40
Total interest paid = $27,914.40 - $25,000 = $2,914.40
In this example, you would pay approximately $465.24 per month, with a total interest cost of $2,914.40 over the life of the loan.
Frequently Asked Questions
How accurate is this auto payment interest calculator?
This calculator provides estimates based on standard loan formulas. For precise figures, consult your lender's actual terms and conditions.
What factors can affect my actual auto loan payments?
Actual payments may vary based on your lender's specific terms, additional fees, and any changes to your interest rate or loan term.
Can I use this calculator for refinancing?
Yes, you can use this calculator to estimate payments for both new loans and refinancing scenarios by adjusting the loan amount and terms.