This car payment calculator estimates your monthly auto loan installment before you visit a dealer. Enter vehicle price, down payment, interest rate, and loan term—optionally include trade-in value and sales tax to see the amount financed, total interest, and total cost.

Dealers often quote a monthly payment—running your own numbers first helps you spot when the term was stretched to hit a target payment.

Sales tax is frequently rolled into the financed amount. Include it here so the payment matches what you will actually borrow.

How to use this tool

Enter vehicle price, down payment, APR, and term in months. Add trade-in and sales tax if applicable, then calculate to see monthly payment, total interest, and total cost.

Worked example

Example: a $32,000 vehicle with $4,000 down, 7.2% APR, and a 60-month term finances $28,000 and gives roughly $557/month before tax and fees.

When to use this

Comparing dealer financing to a credit union pre-approval.
Checking whether a longer term fits your monthly budget.
Estimating payment before negotiating out-the-door price.

Common examples

$25,000 vehicle with $3,000 down, 6.9% APR, 60 months → about $435/month on $22,000 financed (before tax, title, and dealer fees).
$35,000 SUV with $5,000 down, 7.2% APR, 72 months → about $514/month on $30,000 financed—lower payment than 60 months but roughly $1,400 more total interest.
$45,000 truck with $8,000 down plus a $6,000 trade-in, 5.9% APR, 48 months → about $727/month on $31,000 financed for a shorter payoff window.
$42,000 SUV with $7,000 down, 5.4% APR, 48 months → about $815/month before tax on roughly $35,000 financed.
Used $18,500 sedan with $2,000 down, 8.9% APR, 36 months → higher payment but less total interest than 72 months at the same rate.

What people search for

car payment calculator
auto loan calculator
car loan calculator with tax
monthly car payment estimator
vehicle finance calculator

Common mistakes

Using sticker price instead of negotiated selling price.
Forgetting doc fees and add-ons that increase the financed balance.
Comparing a 72-month payment to a 48-month quote without total interest.

compare two car loan offers
see payment with $0 down
calculate total interest on auto loan
estimate affordable car price from budget

How it works

Enter the vehicle price, down payment, interest rate, and loan term in months. Optional trade-in value and sales tax are applied to estimate the amount financed. The calculator uses the standard amortizing loan formula for monthly payment, total interest, and total cost. Fees, insurance, and registration beyond your inputs are not included.

Limitations

Estimates assume a fixed APR and equal monthly payments. Dealer fees, gap insurance, and regional tax rules are not included. Confirm final terms with your lender.

Privacy and file handling

Your data stays on your device and is not uploaded.

Accuracy & methodology

This section documents how the calculator works, what it leaves out, and when results were last reviewed. Figures are educational estimates—not professional advice—and are not labeled "current" unless tied to automatically updated reference data.

Formula source or methodology: Standard amortizing auto loan: monthly payment from principal, annual rate, and term; schedules total interest and payoff.
Jurisdiction: General (lender rules vary by country and state)
Unit system: Currency; annual rate %; term in months or years per form
Rounding method: Currency amounts round to two decimal places (half up via Math.round × 100 / 100).
Assumptions: Fixed rate for the full loan term
No balloon payment or residual value buyout
Known omissions: Not tax, legal, investment, or lending advice. Confirm material decisions with qualified professionals.
Dealer documentation fees, gap insurance, and extended warranties unless entered separately
Registration, title, and license fees unless you add them outside this calculator
Prepayment penalties, variable rates, and lease or balloon residuals
Sales tax is estimated from your percent input—verify local rules with your dealer or DMV
Test cases (automated): Valid principal, rate, and term yield a positive monthly payment
Zero or negative principal is rejected
Version & last verified: Logic version 1.0. Content and formulas last verified 2026-07-06.

Results are estimates for educational purposes and are not financial advice. Taxes, fees, insurance, and lender-specific terms may not be included. Consult a qualified financial professional for personal guidance.

Related Car Loan Calculator guides

These pages use the same car loan calculator with guides tailored to specific search intents.

Related comparisons

Learn how formats and terms differ before you convert or calculate.

APR vs Interest Rate

FAQ

Frequently asked questions

Does this include insurance and registration?

No. Results cover principal, interest, and optional sales tax on the financed amount. Insurance, registration, and dealer fees are separate.

Can I enter the loan term in months?

Yes. Auto loans are typically quoted in months—enter 36, 48, 60, or 72 as your term.

How is the monthly car payment calculated?

The calculator uses standard amortizing loan math on the amount financed after down payment and trade-in.

Page last reviewed: July 6, 2026

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