Auto Loan Calculator
Free auto loan calculator with taxes, title fees, trade-in, negative equity & rebates. Instantly see real monthly payment and total cost.
| Auto Price | |
| Loan Term (Months) | |
| Interest Rate | |
| Cash Incentives/Rebate | |
| Down Payment | |
| Trade-in Value | |
| Amount Owed on Trade-in | |
| Sales Tax Rate | |
| Title, Reg & Fees | |
| # | Payment | Principal | Interest | Balance |
|---|
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Common Calculators | |
Table of Contents
Auto Loan Calculator 2025. Free, Accurate & Instant
Trying to figure out how expensive a car you can actually afford? Or wondering what your real monthly payment will be after taxes, fees, and interest? You're in the right place.
Our completely free Auto Loan Calculator gives you the exact numbers most dealership finance offices won't show you upfront — including sales tax, registration fees, trade-in value, negative equity, cash incentives, and whether you should roll taxes & fees into the loan or pay them in cash.
No rounded “estimates.” Just real math that matches what the bank will actually charge you.
Try the calculator (or keep reading for a deep-dive explanation).
How the Auto Loan Calculator Works
1. Choose your mode
Total Price: You know the car price and want to see the real monthly payment
Monthly Payment: You know your budget and want to see the maximum price you can afford
2. Enter the basics
Vehicle price (MSRP or negotiated price)
Cash incentives / rebates
Your down payment
Trade-in value & amount still owed (negative equity is handled correctly)
Loan term in months
Interest rate (APR)
Your state's sales tax rate
Title, registration, doc fees, etc.
3. Decide whether to include taxes & fees in the loan (most people do — it affects both payment and total interest dramatically)
4. Hit Calculate → You instantly see:
Monthly payment (exact to the penny)
Total amount financed
Sales tax paid
True out-the-door cost
Total interest over the life of the loan
Pie chart showing principal vs interest
Upfront cash needed at signing
60-Month vs 72-Month vs 84-Month Loan: Which Is Cheaper?
Everyone wants the lowest monthly payment, but longer terms can cost you thousands extra in interest.
| Term | Monthly (at 6.5%) | Total Interest | Total Paid |
|---|---|---|---|
| 48 mo | $956 | $4,288 | $45,888 |
| 60 mo | $785 | $5,350 | $47,100 |
| 72 mo | $672 | $6,434 | $48,384 |
| 84 mo | $590 | $7,560 | $49,560 |
Yes, an 84-month loan saves you $366/month… but costs you $3,272 more in interest. Only go longer than 60 months if you absolutely must.
Frequently Asked Questions
Q: Why is my payment higher than the dealership quoted?
A: They probably excluded tax, title, and fees from the quote. Our calculator includes everything.
Q: Should I put 20% down?
A: 20% is ideal to avoid being upside-down, but even 10% is fine in 2025's high-price market. Put down whatever keeps your payment comfortable and keeps you from owing more than the car is worth in year 1–2.
Q: Does the calculator work for used cars?
A: Yes — just enter the actual purchase price of the used car. Rates are usually 1-3% higher.
Q: Can I calculate leasing?
A: Not yet - This one is for traditional purchase loans only.