Pennsylvania Bill of Sale for a Car: Notarized or Not?

Quick answer: Pennsylvania does not require a bill of sale for a standard private vehicle sale — the notarized title assignment is what legally transfers ownership. However, a bill of sale is strongly recommended as your proof of the transaction, and PennDOT does require Form MV-4ST or a bill of sale in certain situations, such as when the sale price must be documented for tax purposes or the vehicle has no title record. If a bill of sale is used for a title-related transaction, it generally needs to be notarized, consistent with Pennsylvania’s notarization rules for vehicle paperwork.

Is a Bill of Sale Required in Pennsylvania?

For an ordinary private-party car sale between two Pennsylvania residents, the legally operative document is the Certificate of Title with a completed, notarized assignment. That is what moves ownership. A bill of sale is not a substitute for it and cannot transfer a vehicle on its own. So strictly speaking, no — you are not required to produce one for a routine sale.

That said, “not required” and “not worth having” are very different things. A bill of sale is cheap insurance that protects both parties, and there are specific circumstances where PennDOT or a tag agent will ask for one.

When a Bill of Sale Actually Matters

• Documenting the sale price for sales-tax purposes, especially if the price is well below fair market value.
• Gift or family transfers, where Form MV-13ST and supporting documentation come into play.
• Vehicles sold as-is, where you want written proof the buyer accepted the condition.
• Selling to a dealer, scrapyard, or junk buyer, where a receipt of the transaction is standard practice.
• Vehicles with no title record or unusual ownership history, where a paper trail is essential.

Does a Pennsylvania Bill of Sale Have to Be Notarized?

This is where most of the confusion lives. Pennsylvania requires notarization for the title assignment — that is not optional and is covered in detail in our guide to PA title transfers and the notary requirement. A plain bill of sale you write up between yourselves as a private receipt does not itself need to be notarized to be useful to you.

But if the bill of sale is being submitted as part of a title transaction — to document a price, support a tax calculation, or stand in for missing documentation — expect that it will need to be notarized, because PennDOT applies the same standard of verification to vehicle paperwork generally. When in doubt, have it notarized at the same visit as the title assignment. It costs little and removes the question entirely.

What to Include in a PA Bill of Sale

Form MV-4ST and Other PennDOT Forms

Pennsylvania uses several forms around vehicle transactions, and the names blur together. MV-4ST is the Vehicle Sales and Use Tax Return / Application for Registration, typically completed by an authorized agent as part of the transfer. MV-1 is the application for a certificate of title, used for out-of-state or first-time PA titling. MV-13ST is the affidavit used for gift transfers. MV-38O is the duplicate title request. You generally will not fill these out alone at a kitchen table — an authorized tag or messenger service completes them with you, which is another reason to use one.

The “As-Is” Clause: Your Best Protection as a Seller

If you take one thing from this guide, make it this. When you sell a used vehicle privately — especially an older, high-mileage, or non-running one — write clearly on the bill of sale that the vehicle is sold “as-is, where-is, with no warranty expressed or implied.” Note any known defects honestly: the check engine light, the failing transmission, the rust. This does two things: it protects you from a buyer returning weeks later claiming you concealed a problem, and it demonstrates you dealt honestly. Disclosure plus an as-is clause is a far stronger position than saying nothing.

Odometer Disclosure and Why It Must Match

Federal and state rules require an accurate odometer disclosure on transfer. The reading you record on the bill of sale should match exactly what you record on the title assignment — a mismatch invites questions and can invalidate the paperwork. If the odometer is broken or has rolled over, disclose that explicitly rather than guessing at a number. “Odometer inoperative” or “exceeds mechanical limits” is an acceptable and honest disclosure; a fabricated figure is not.

Reporting the Sale Price Honestly

The sale price on your bill of sale and title assignment sets the buyer’s 6% sales tax (7% in Allegheny County, 8% in Philadelphia). It can be tempting for a buyer to ask you to write a lower number. Don’t. PennDOT can review reported prices that fall well below fair market value, and an inaccurate declaration exposes both parties. For a genuinely low-value junk car the tax is small anyway — a $400 vehicle carries roughly $24 in state tax — so there is very little to gain and real risk in misreporting. Our guide to PA title transfer costs explains how the tax is calculated.

Bill of Sale for a Junk or Scrap Vehicle

When you sell a junk car, a bill of sale takes on added importance because these transactions often involve a vehicle that will be dismantled or crushed. You want written evidence of exactly when the car left your possession and who took responsibility for it. Reputable buyers provide this as standard practice. When you sell to CashSellCar’s Pennsylvania service, you get a cash offer for the vehicle as-is, guidance on the notarized title assignment, and free towing on eligible accepted offers statewide, subject to vehicle details and pickup access. Keep your copy of both the notarized assignment and the sale record.

Keep Your Copy — and Notify Your Insurer

After the sale, keep the bill of sale and a copy of the notarized title assignment together. Remove your license plate before the car leaves, since Pennsylvania plates stay with the owner, and either transfer it to another vehicle or return it to PennDOT. Then notify your insurance company that you no longer own the vehicle. These three steps — paperwork copy, plate removed, insurer notified — close the loop and protect you from tolls, tickets, or liability tied to a car you no longer have.

Common Bill of Sale Mistakes

• Leaving the VIN off — without it, the document barely identifies the vehicle.
• Recording a price that contradicts the title assignment — the two must agree.
• Omitting as-is language on a used or non-running vehicle.
• Guessing at the odometer instead of disclosing it is broken.
• Not keeping a copy — the seller needs one as much as the buyer.
• Assuming it replaces the title — it never does in Pennsylvania.

Do You Need a Lawyer or a Template?

You do not need a lawyer to write a bill of sale for a used car. A simple one-page document containing the items in the table above is sufficient for a private sale, and generic templates are widely available. What matters is completeness and accuracy, not legal formatting. The place to spend care is the title assignment itself, which has real legal effect and must be notarized correctly. If you are selling to a business — a dealer or a cash-for-cars buyer — they will typically supply their own paperwork, and you should read it before signing rather than bringing your own.

The Bottom Line on Pennsylvania Bills of Sale

Pennsylvania does not require a bill of sale to transfer a car — the notarized title assignment does that job. But treating the bill of sale as optional paperwork is a mistake. It is the document that records the price, the condition, the odometer, and the moment responsibility passed from you to the buyer, and it costs nothing but a few minutes to produce. Include the VIN, the honest price, the accurate odometer, and clear as-is language; have it notarized alongside the title assignment if it is supporting a title transaction; and keep your copy. For a low-value or non-running vehicle in particular, that single page is often the only proof you will have that the car is no longer yours.

Two Copies, Two Signatures, One Clean Record

A small procedural habit prevents most later disputes: produce two identical copies of the bill of sale, have both parties sign both copies, and each side keeps one. It sounds obvious, yet the most frequent version of this going wrong is a seller who handed over the only copy and later has no documentation of what was agreed. If a question arises months afterward — about the condition disclosed, the price reported, or the date responsibility shifted — the person holding the signed record is in a far stronger position. Photograph your copy with your phone as a backup the moment it is signed, so a lost piece of paper does not become a lost record.

Frequently Asked Questions

Is a bill of sale required in Pennsylvania?

Not for a standard private sale — the notarized title assignment transfers ownership. A bill of sale is strongly recommended and is required or requested in certain situations, such as documenting the sale price or gift transfers.

Does a PA bill of sale need to be notarized?

A private receipt between buyer and seller does not have to be. If the bill of sale supports a title transaction, expect it to need notarization — the simplest approach is to notarize it at the same visit as the title assignment.

What should a Pennsylvania bill of sale include?

Names and addresses of both parties, date, year/make/model, VIN, odometer reading, sale price, as-is language, and both signatures.

Can a bill of sale replace a title in PA?

No. A bill of sale never transfers ownership in Pennsylvania. If the title is missing, request a duplicate (Form MV-38O) from PennDOT before selling.

What is Form MV-4ST?

It is Pennsylvania’s Vehicle Sales and Use Tax Return / Application for Registration, generally completed by an authorized agent as part of processing a transfer.

Do I need a bill of sale for a junk car?

It is not legally required, but it is highly advisable. It documents when the vehicle left your possession — important when a car is going to be dismantled or scrapped.

Should I write the actual sale price?

Yes. The price sets the buyer’s sales tax, and PennDOT can review prices well below market value. On a low-value junk car the tax is minimal anyway.

What does “sold as-is” actually protect?

It records that the buyer accepted the vehicle in its current condition with no warranty, which — combined with honest disclosure of known faults — protects you from later claims about defects.