Calcul Mensualité Prêt Auto

Calculating your monthly car loan payment is essential for budgeting and financial planning. This calculator helps you determine your monthly payment based on the loan amount, interest rate, and loan term. Understanding how your loan payment is calculated can help you make informed decisions about your auto financing.

How to use this calculator

To calculate your monthly car loan payment, follow these simple steps:

Enter the loan amount you need to borrow in the "Loan Amount" field.
Enter 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 monthly payment.

The calculator will display your estimated monthly payment, total interest paid over the life of the loan, and a breakdown of your loan payments.

Formula explained

The monthly car loan payment is calculated using the standard loan payment formula:

Loan 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)

This formula accounts for both the principal amount and the interest charged on the loan. The monthly payment is calculated by dividing the principal by the present value of an annuity factor, which is determined by the interest rate and loan term.

Worked example

Let's calculate the monthly payment for a $25,000 loan with a 4.5% annual interest rate and a 5-year term.

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 ≈ $464.89

In this example, the monthly payment is approximately $464.89. The total amount paid over the life of the loan would be $27,893.40, with $2,893.40 going toward interest.

Interpreting your results

Your monthly payment includes both principal and interest. At the beginning of the loan, most of your payment goes toward interest, while as the loan progresses, more of your payment goes toward the principal.

It's important to compare loan offers from different lenders to ensure you're getting the best possible rate. Also, consider the total cost of the loan, including fees and other expenses, when making your decision.

Tip

If you can make larger payments, you can pay off your loan faster and save on interest. Consider making extra payments or refinancing your loan if interest rates drop.

Frequently Asked Questions

How is the monthly payment calculated?: The monthly payment is calculated using the loan amount, interest rate, and loan term with the standard loan payment formula.
What factors affect my monthly payment?: Your monthly payment is affected by the loan amount, interest rate, and loan term. A higher loan amount, interest rate, or longer term will result in a higher monthly payment.
Can I pay off my loan early?: Yes, you can pay off your loan early without penalty. Paying extra principal can save you money on interest and shorten the life of your loan.
What is the difference between APR and interest rate?: The interest rate is the cost of borrowing, while the APR (Annual Percentage Rate) includes additional fees and charges. The APR is usually higher than the interest rate.
How can I lower my monthly payment?: You can lower your monthly payment by increasing the loan term, negotiating a lower interest rate, or making larger payments.