Free Auto Loan Amortization 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
This free auto loan amortization calculator helps you understand your monthly payments, total interest paid, and loan payoff schedule. Simply enter your loan amount, interest rate, and term, then click Calculate to see your results.
How to Use This Calculator
Using this auto loan amortization calculator is simple:
- Enter your loan amount in the first field (e.g., $25,000)
- Enter your annual interest rate (e.g., 5.25%)
- Select your loan term in years (e.g., 5 years)
- Click the Calculate button
- Review your monthly payment, total interest, and payoff schedule
The calculator will display your monthly payment amount, total interest paid over the life of the loan, and a visualization of your loan balance over time.
Formula Explained
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 × 12)
This formula calculates the fixed monthly payment required to pay off the loan in the specified term, including both principal and interest.
Worked Example
Let's calculate a $25,000 auto loan at 5.25% annual interest for 5 years:
- Principal (P) = $25,000
- Annual interest rate = 5.25% or 0.0525
- Monthly interest rate (i) = 0.0525 / 12 ≈ 0.004375
- Number of payments (n) = 5 × 12 = 60
Plugging these into the formula:
Calculation Steps
M = 25000 [0.004375(1 + 0.004375)^60] / [(1 + 0.004375)^60 - 1]
M ≈ 25000 [0.004375 × 1.2856] / [1.2856 - 1]
M ≈ 25000 [0.005609] / 0.2856
M ≈ 25000 × 0.01964 ≈ $491.00
Your monthly payment would be approximately $491.00, with a total interest payment of about $1,500 over the life of the loan.
Frequently Asked Questions
How does the interest rate affect my monthly payment?
A higher interest rate will increase your monthly payment because you'll be paying more in interest over the life of the loan. Conversely, a lower interest rate will reduce your monthly payment.
Can I pay extra toward my loan without penalty?
Yes, most auto loans allow prepayment without penalty. Paying extra principal will reduce your total interest costs and shorten your loan term.
How accurate is this calculator?
This calculator provides an estimate based on standard amortization formulas. For exact terms, consult your lender's documentation.