Auto Loan Calculator

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Auto Loan Results

Amortization Schedule

YearInterestPrincipalEnding Balance
No yearly schedule (no loan required)

Auto Loan Calculator – Estimate Monthly Payment, Interest, Tax, Fees & Total Cost

An auto loan calculator helps you estimate your car payment based on vehicle price (or target monthly payment), loan term, interest rate, and upfront costs like down payment, trade-in, sales tax, and registration fees. This tool also generates an amortization schedule (monthly or annual) so you can see how your balance drops over time.

Use it to compare loan offers, adjust down payment or trade-in value, and understand the true “out-the-door” cost — not just the sticker price.

Table of Contents

How This Auto Loan Calculator Works

This calculator estimates your auto loan using standard amortization math. Based on your inputs, it calculates:

  • Monthly payment (principal + interest)
  • Total loan amount you actually finance (after down payment, incentives, trade-in adjustments)
  • Sales tax and fees (depending on state rules and whether you include them in the loan)
  • Upfront payment needed at purchase
  • Total interest paid over the loan term
  • Total cost (price + tax + fees + total interest)
Key idea: Two loans with the same car price can cost very differently depending on APR, term length, taxes/fees, and how much you pay upfront.

Two Modes: Total Price vs Monthly Payment

Total Price Mode

Enter the car price, loan term, APR, incentives, down payment, trade-in, state tax, and fees. The calculator estimates your monthly payment and totals.

Monthly Payment Mode

Enter the monthly payment you want to target. The calculator estimates what car price might fit that payment, then calculates taxes, fees, and total cost from there.

Monthly Payment mode is helpful for budgeting — but always confirm with real lender quotes and dealership pricing.

What’s Included in Your Auto Loan Cost

Many buyers focus only on monthly payment, but the true cost includes multiple components:

  • Vehicle price: sticker price or negotiated purchase price.
  • Cash incentives: rebates/discounts that reduce price.
  • Down payment: upfront cash that lowers the financed amount.
  • Trade-in value and trade-in loan owed: affects net amount you pay upfront and finance.
  • Sales tax: varies by state; may be calculated differently with trade-ins.
  • Title/registration/fees: DMV fees, documentation charges, destination fee, etc.
  • Loan interest: cost of borrowing based on APR and remaining balance.

Include taxes and fees in loan?

If you include taxes/fees in the loan, you may need less cash upfront — but you’ll usually pay more interest because you’re financing a larger amount.

Sales Tax, Title/Registration Fees & State Rules

Sales tax rules can vary by state. Some states have no state sales tax on vehicle purchases, and some states handle trade-in tax credits differently. This calculator lets you choose a state and apply a sales tax rate to estimate your costs.

Title & registration fees

These are common DMV and paperwork-related costs that can be paid upfront or financed depending on your loan setup.

Why estimates can differ

Dealership fees, local taxes, and lender rules can change final numbers. Use this tool for planning, then verify with your dealer/lender.

Tip: If your “Sales Tax” looks too high or too low, double-check your selected state and tax rate.

Trade-In Value vs Trade-In Owed (Net Trade-In)

Trade-in can reduce your upfront cash needs — but it depends on whether you still owe money on your current car. This calculator considers:

  • Trade-in value: what the dealer offers for your current vehicle.
  • Amount owed: remaining loan balance on the trade-in vehicle.
  • Net trade-in: value minus owed amount.
Important: If you owe more than the trade-in value (“negative equity”), that difference can get added to the new loan — increasing your financed amount and total interest.

Amortization Schedule: Monthly vs Annual

The amortization schedule shows how each payment is split between interest and principal, and how your balance changes. Use:

  • Monthly schedule for detailed tracking month-by-month.
  • Annual schedule for a quick year-by-year summary.

Note: Actual lender schedules can differ slightly due to rounding and payment posting rules.

Auto Loan Tips to Save Money

  • Shop APR: compare lenders — even small rate changes can save a lot.
  • Increase down payment: lowers the financed amount and usually reduces interest.
  • Shorter term (if affordable): higher payment, but often lower total interest.
  • Avoid negative equity: rolling it into a new loan can increase total cost.
  • Watch fees: document fees and add-ons can raise total cost without improving the car.

Planning tip

Try the calculator with 48, 60, and 72 months. You’ll often see a big difference in total interest even if the monthly payment difference looks small.

FAQs – Auto Loan Calculator

1. Why is my dealer’s payment different from this calculator?

Differences can happen due to lender fees, dealership add-ons, local taxes, rounding, exact APR vs rate, and the timing of fees/taxes being included in the financed amount.

2. Should I include taxes and fees in the loan?

If you want lower upfront cost, including them in the loan can help. But financing more usually increases total interest.

3. How do cash incentives affect my loan?

Incentives reduce the effective vehicle price, which can reduce the amount you need to finance and lower total interest.

4. What is “negative equity” on a trade-in?

It means you owe more on your current car than its trade-in value. That difference can be added to the new loan, increasing your financed amount.

5. Does this include insurance and maintenance?

No. This tool estimates financing cost (payment, tax, fees, interest). Running costs like insurance, fuel, and maintenance vary by driver and vehicle.

6. Can I use this for used cars?

Yes — enter the used car purchase price and your loan terms. Used car APR and fees may be different, so compare scenarios.

About This Auto Loan Calculator

  • Supports Total Price mode and Monthly Payment mode.
  • Estimates sales tax, fees, and total financed amount.
  • Shows monthly/annual amortization schedule.
  • Downloadable PDF results + schedule.
  • Last updated: 2/4/2026

Financial Disclaimer

This auto loan calculator is for educational and informational purposes only and does not provide financial, legal, tax, or investment advice. Results are estimates and may differ from dealership or lender calculations due to fees, local taxes, rounding, and loan-specific terms. Always confirm details with your lender or a qualified professional.

Quick Options

Auto Loan Tips

  • A larger down payment reduces your monthly payment and total interest.
  • Shorter loan terms mean higher monthly payments but less total interest.
  • Even a 0.5% difference in interest rate can save thousands over the loan term.
  • Consider making extra payments toward principal to reduce total interest.