Auto Calculator Payments

Use this auto loan calculator to determine your monthly payments, total interest, and loan cost. Simply enter your loan amount, interest rate, and term, then click Calculate to see your results.

How to Use This Calculator

To calculate your auto loan payments:

Enter the loan amount in dollars (e.g., 25000)
Enter the annual interest rate as a percentage (e.g., 4.5)
Select the loan term in years (e.g., 5)
Click the Calculate button

The calculator will display your monthly payment, total interest paid, and total cost of the loan. You can also view a payment breakdown chart.

Formula Used

The auto loan payment is calculated using the standard loan payment formula:

Monthly Payment = P × (r(1 + r)^n) / ((1 + r)^n - 1)

Where:

P = Principal loan amount
r = Monthly interest rate (annual rate ÷ 12 ÷ 100)
n = Number of payments (loan term in years × 12)

Total interest is calculated by multiplying the monthly payment by the number of payments and subtracting the principal loan amount.

Worked Example

Let's calculate the monthly payment for a $25,000 loan at 4.5% annual interest for 5 years:

Principal (P) = $25,000
Annual interest rate = 4.5% → Monthly rate (r) = 4.5 ÷ 12 ÷ 100 = 0.00375
Loan term = 5 years → Number of payments (n) = 5 × 12 = 60

Plugging these values into the formula:

Monthly Payment = 25000 × (0.00375(1 + 0.00375)^60) / ((1 + 0.00375)^60 - 1)

Monthly Payment ≈ $454.23

Total interest paid over 5 years would be approximately $1,825.40, and the total cost of the loan would be $26,825.40.

Frequently Asked Questions

What is the difference between APR and interest rate?: The interest rate is the cost of borrowing, while APR (Annual Percentage Rate) includes additional fees and costs. APR is always higher than the interest rate.
How does a longer loan term affect my payments?: A longer loan term means lower monthly payments but more total interest paid. A shorter term means higher monthly payments but less total interest.
Can I pay extra toward my loan without penalty?: Yes, most auto loans allow prepayment without penalty. Paying extra can save you money on interest and shorten your loan term.
What happens if I can't make my payments?: If you miss payments, your lender may charge late fees, increase your interest rate, or report you to credit bureaus. This can damage your credit score.
Should I get an extended warranty?: Extended warranties can be expensive and may not be worth the cost. Consider the actual repair costs for your vehicle and your budget before purchasing.