Calculator for Auto Loans
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Reviewed by Calculator Editorial Team
This auto loan calculator helps you estimate your monthly payments, total interest, and loan cost for a new or used vehicle. Simply enter your loan amount, interest rate, and loan term to get an instant calculation.
How to Use This Calculator
Using this auto loan calculator is simple:
- Enter the loan amount (the price of the vehicle you're financing)
- Enter the annual interest rate (APR) offered by the lender
- Select the loan term in years (typically 3-7 years)
- Click "Calculate" to see your monthly payment and loan summary
The calculator uses the standard auto loan payment formula to provide accurate estimates. Remember that actual payments may vary based on your lender's specific terms and conditions.
Formula Used
The auto loan payment is calculated using the standard loan payment formula:
This formula accounts for the interest on the loan balance each month, which is why the monthly payment decreases over time as the principal balance is paid down.
Worked Example
Let's calculate a monthly payment for a $25,000 loan at 4.5% APR over 5 years:
- Convert annual rate to monthly: 4.5% ÷ 12 = 0.375% or 0.00375
- Calculate number of payments: 5 years × 12 = 60 payments
- Plug values into formula:
M = $25,000 [ 0.00375(1 + 0.00375)^60 ] / [ (1 + 0.00375)^60 - 1 ]
- The calculation results in approximately $452.38 per month
This example shows that over 5 years, you would pay about $27,143.20 in total payments, with $2,143.20 going to interest.
Loan Comparison Table
Compare different loan terms to see how they affect your monthly payments and total interest:
| Loan Term | Interest Rate | Monthly Payment | Total Interest |
|---|---|---|---|
| 3 years | 4.5% | $725.42 | $1,812.60 |
| 4 years | 4.5% | $583.33 | $2,400.00 |
| 5 years | 4.5% | $452.38 | $2,143.20 |
| 5 years | 3.9% | $430.25 | $1,905.00 |
This table shows how shorter loan terms and lower interest rates can significantly reduce your monthly payments and total interest costs.
Frequently Asked Questions
What is the difference between APR and APY?
APR (Annual Percentage Rate) is the simple annual interest rate charged on a loan, while APY (Annual Percentage Yield) is the effective annual rate that includes compounding interest. APY is generally higher than APR for the same loan.
How do I find the best auto loan rate?
To find the best rate, compare offers from multiple lenders, check your credit score, and consider your down payment amount. Lenders may offer lower rates to borrowers with good credit and larger down payments.
What fees are included in an auto loan?
Common auto loan fees include origination fees, application fees, and documentation fees. Some lenders may include these in the total loan amount, while others may charge them separately.