CAR DEAL CALCULATOR

See the price behind the payment.

Enter the dealer's numbers. DealProof exposes the real purchase cost, interest, trade equity, and fees in seconds.

No signup.Calculator inputs stay on your device.

Build the deal

Vehicle and price

Vehicle description optional Sticker / asking price$ Dealer discount / rebate$

Taxes and dealer fees

Sales tax rate% Dealer / doc fee$ Title and registration$ Add-ons and protection$

Dealer fees and add-ons are taxableRules vary by state. Toggle this to match the buyer's order.

Trade and financing

Trade-in allowance$ Trade loan payoff$ Cash down$ APR% Loan term

Trade reduces the taxable priceCommon in many states; confirm locally.

Your real numbers

LIVE

Estimated monthly payment

$0/mo

60 months7.5% APR

Out-the-door price$0Before trade and down

Amount financed$0After equity and down

Total interest$0Across the full loan

Trade equity$0No trade entered

DEAL CLARITY SCORE

Reviewing the numbers

DealProof checks fees, add-ons, loan length, and trade equity.

Price breakdown

Adjusted vehicle price: $0
Estimated sales tax: $0
Dealer/doc fee: $0
Title and registration: $0
Add-ons: $0
Out-the-door: $0

Estimate only. Taxes, lender rules, and taxable fees vary. Confirm figures on the buyer's order before signing.

READY-TO-SEND

Your dealer offer

FREE BUYER TOOLS

Check the rest of the deal

View all tools

COMPARE

Auto-loan offers

Put two APR and term combinations side by side.

Open calculator → TRADE

Negative equity

See exactly what an upside-down trade adds to the next loan.

Check my trade → FEES

Fee impact

Translate dealer fees and add-ons into payment and lifetime cost.

Review fees → BUDGET

Car affordability

Work backward from a payment ceiling to a price target.

Set my ceiling →

BUYER PLAYBOOK

Three numbers dealers hope you ignore

Out-the-door price

The vehicle price plus taxes and every mandatory fee. Get this number in writing before discussing financing.

Total interest

A longer term lowers the monthly payment while quietly increasing how much the loan costs overall.

Trade equity

Your trade allowance minus its payoff. Negative equity gets added to the new loan and can hide inside the payment.