Bankrate Auto Loan Calculator with Tax

This Bankrate Auto Loan Calculator with Tax helps you estimate your monthly payments, total interest, and the impact of sales tax on your auto loan. Simply enter your loan details, and the calculator will provide a clear breakdown of your financial commitment.

How to Use This Calculator

Using the Bankrate Auto Loan Calculator with Tax is straightforward:

Enter the loan amount you're considering
Select your loan term (typically 36-72 months)
Input your estimated annual interest rate
Enter the sales tax percentage for your state
Click "Calculate" to see your results

The calculator will display your estimated monthly payment, total interest paid, and the total amount financed including tax.

Formula Used

The calculator uses the standard auto loan payment formula:

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

Where:

P = Principal loan amount
r = Monthly interest rate (APR/12)
n = Number of payments (loan term in months)

The total amount financed includes the loan amount plus sales tax.

Worked Example

Let's calculate a $25,000 auto loan with a 4.5% APR over 60 months and 8% sales tax:

Monthly interest rate = 4.5%/12 = 0.375%
Monthly payment = $25,000 × (0.00375(1 + 0.00375)^60) / ((1 + 0.00375)^60 - 1) ≈ $452.34
Total interest = $452.34 × 60 - $25,000 ≈ $1,940.40
Sales tax = $25,000 × 8% = $2,000
Total amount financed = $25,000 + $2,000 = $27,000

This example shows you'll pay approximately $452.34 per month with $1,940.40 in interest over 5 years.

Interpreting Results

When using this calculator, consider these key points:

The monthly payment includes principal and interest
Sales tax increases the total amount you'll finance
Shorter loan terms reduce total interest but increase monthly payments
Lower interest rates save you money over the life of the loan

Remember that these are estimates. Your actual payment may vary based on the exact loan terms and conditions offered by your lender.

Frequently Asked Questions

How accurate is this auto loan calculator?: This calculator provides estimates based on standard auto loan formulas. For precise figures, consult with your lender.
Does this calculator include down payment?: No, this calculator focuses on the loan amount. You should subtract your down payment from the total vehicle price before entering the loan amount.
What if I want to refinance my auto loan?: The calculator can help you estimate payments for a new loan, but refinancing terms may differ from your current loan.
How does sales tax affect my loan?: Sales tax increases the total amount you finance, which affects your monthly payments and total interest over the loan term.
Can I use this for lease payments?: No, this calculator is specifically for traditional auto loans, not leases. Lease payments include different components.