84 Month Auto Loan Calculator with Tax

This 84-month auto loan calculator helps you determine your monthly payments including taxes. Whether you're comparing loan options or planning your budget, this tool provides a clear breakdown of your repayment schedule and tax implications.

How to Use This Calculator

To calculate your 84-month auto loan with taxes:

Enter the loan amount in the "Loan Amount" field.
Input the annual interest rate in the "Interest Rate" field.
Select the sales tax percentage from the dropdown menu.
Click "Calculate" to see your monthly payment and total cost.

The calculator will display your monthly payment, total interest paid, and total amount paid including taxes. You can also view a payment schedule chart.

Formula Explained

The calculator uses the standard auto loan formula with tax adjustments:

Monthly Payment Formula

P = (L + (L × T)) × (r × (1 + r)^n) / ((1 + r)^n - 1)

Where:

P = Monthly payment
L = Loan amount
T = Sales tax percentage
r = Monthly interest rate (annual rate / 12)
n = Number of payments (84 months)

The formula first calculates the total loan amount including sales tax, then applies the standard loan payment calculation.

Worked Example

Let's calculate a $25,000 loan with 5% interest and 8% sales tax:

Total loan amount with tax: $25,000 + ($25,000 × 0.08) = $27,000
Monthly interest rate: 5% / 12 = 0.4167%
Monthly payment: $27,000 × (0.004167 × (1.004167)^84) / ((1.004167)^84 - 1) ≈ $362.50
Total interest paid: $362.50 × 84 - $27,000 ≈ $1,620
Total amount paid: $362.50 × 84 ≈ $30,300

This example shows how sales tax increases the total loan amount and affects your monthly payments.

Tax Considerations

Sales tax on auto loans varies by state and can significantly impact your total loan cost. Key points to consider:

Sales tax is typically applied to the purchase price of the vehicle
Some states include additional fees like title fees and registration
Tax-exempt vehicles may have different tax implications
Sales tax rates can change, so check current rates for your location

Note

This calculator provides an estimate. Actual tax rates and loan terms may vary. Always check with your lender for precise figures.

Frequently Asked Questions

How does sales tax affect my auto loan?

Sales tax increases the total amount you need to finance. This means your monthly payments will be higher to cover both the loan principal and the additional tax amount.

Can I get a loan for 84 months?

Yes, many lenders offer 7-year (84-month) auto loans. However, availability depends on your credit score, income, and the lender's policies.

How accurate is this calculator?

This calculator provides an estimate based on standard loan formulas. For precise figures, consult your lender or use their official loan calculator.

What if I can't afford the monthly payments?

Consider shorter loan terms, lower loan amounts, or refinancing options. You can also use this calculator to explore different scenarios.