Know before you sign
How to Read a Car Deal Sheet (and Spot the Junk Fees)
The deal sheet is where a car purchase is won or lost. Learn what every line means, which fees are real, how to find your true out-the-door price, and whether your trade-in offer is fair.
What is a deal sheet?
A deal sheet (also called a buyer's order or purchase order) is the itemized document a dealer hands you before you sign. It lists the vehicle price, every fee and add-on, taxes, any trade-in credit, and the final amount you owe. It is not a window sticker (that comes from the manufacturer) and it is not the loan contract. It is the one document that shows what you are actually paying, and it is where dealer profit is often quietly added.
The sections of a deal sheet
- Vehicle: year, make, model, trim, mileage, and VIN.
- Selling price: the agreed price of the car (compare this to MSRP for a new car).
- Add-ons: optional products and packages the dealer adds (see junk fees below).
- Fees: the documentation fee plus government title and registration fees.
- Trade-in: the credit the dealer gives you for your current vehicle.
- Taxes: sales tax, calculated on the taxable total.
- Out-the-door (OTD) / balance due: the final total you pay.
Legit fees vs. junk fees
The single most useful skill is telling the difference between fees you have to pay and profit dressed up as a fee.
| Line item | What it is | Verdict |
|---|---|---|
| Sales tax | State/local tax on the sale | Legit — non-negotiable |
| Title & registration | Government fees to title/register the car | Legit — non-negotiable |
| Documentation (doc) fee | Dealer's paperwork fee; capped in some states | Legit but often inflated; sometimes negotiable |
| Paint / fabric / interior protection | A coating or sealant add-on | Usually junk — refuse |
| VIN etching, nitrogen tires, pinstriping | Low-cost add-ons sold at a markup | Usually junk — refuse |
| "Market adjustment" / addendum | A markup above MSRP | Junk — negotiate away |
| Service contract / extended warranty | Optional coverage | Optional — often overpriced; can be declined or bought later |
How to find your true out-the-door price
Advertised prices and monthly payments hide the real cost. To get the true OTD, start from the selling price and work down the sheet:
- Start with the selling price.
- Add legitimate items only: doc fee, title, registration, and tax.
- Subtract your trade-in credit and any deposit.
- Every add-on you did not ask for should come out.
Then check that the line items actually add up to the total the dealer wrote down. It is surprisingly common for a total to include a fee twice, or to not reconcile with the parts. If the math does not add up, ask.
Is your trade-in offer fair?
The trade-in is where a lot of money quietly leaks, because it is negotiated separately and easy to lowball. Compare the dealer's allowance to your vehicle's current market value for its year, mileage, trim, and condition. Dealers typically offer below private-sale value, but an offer far under market is money left on the table. Negotiate the trade and the purchase as two separate numbers so one cannot be used to hide the other.
What to do before you sign
- Get the full deal sheet in writing, itemized — not just a monthly payment.
- Refuse add-ons you did not ask for, or ask for an equal discount.
- Compare the true out-the-door price across a few dealers, ideally by email.
- Confirm the trade-in credit against real market value.
- Be ready to walk. It is your strongest position.
Let Vettor read your deal sheet for you
Upload your deal sheet and Vettor flags the junk fees, computes your true out-the-door price, checks whether your trade-in offer is fair, and grades the dealer — free, no account, and your document is deleted after analysis.
Analyze my deal freeFrequently asked questions
What is a car deal sheet?
A deal sheet (also called a buyer's order or purchase order) is the itemized document a dealer gives you that lists the vehicle price, every fee and add-on, taxes, any trade-in credit, and the final out-the-door price. It is the most important document to review before you sign.
What is the out-the-door (OTD) price?
The total you actually pay: vehicle price plus all fees, add-ons, taxes, and title/registration, minus any trade-in credit and deposit. It is the only number that matters when comparing offers.
Which dealer fees are junk fees?
Tax, title, and registration are legitimate. A doc fee is legitimate but often inflated. Add-ons like paint protection, VIN etching, nitrogen tires, and "market adjustments" are typically pure profit and can usually be refused.
How do I know if my trade-in offer is fair?
Compare the dealer's allowance to your car's current market value for its year, mileage, trim, and condition. An offer far below market means money left on the table.
Last updated August 2026. Vettor is a free, independent car-deal analyzer. Educational information, not financial or legal advice.