Fill Out an Illinois Vehicle Bill of Sale Online in 2026

An Illinois Vehicle Bill of Sale is a written document that records the private sale and transfer of ownership of a motor vehicle from a seller to a buyer. It documents the key transaction details: the names and addresses of both parties, a full description of the vehicle (year, make, model, color, and VIN), the agreed purchase price, the odometer reading, and the date of the sale.

Illinois Secretary of State's office does not publish a single mandatory bill of sale form for all vehicle transactions, but the purchase price is a key piece of information used by the Illinois Department of Revenue on Form RUT-50 (Private Party Vehicle Use Tax Transaction Return), which must be filed separately when the buyer registers the vehicle.

An Illinois Vehicle Bill of Sale is used to document private car sales and is directly tied to the state's vehicle use tax process:

• Document the private sale of a motor vehicle and establish legal transfer of ownership
• Record the agreed purchase price, which the buyer reports on Form RUT-50 (Private Party Vehicle Use Tax) filed with the Illinois Department of Revenue
• Protect the seller from future liability related to the vehicle after the sale date
• Provide the buyer with proof of purchase to use when registering the vehicle with the Illinois Secretary of State
• Serve as evidence in any dispute about the terms or condition of the vehicle at the time of sale

A complete Illinois bill of sale should include the following information:

• Full legal name and current address of the seller
• Full legal name and current address of the buyer
• Detailed vehicle description: year, make, model, color, body type, and VIN (Vehicle Identification Number)
• Agreed purchase price
• Date of the transaction
• Current odometer reading at the time of sale (required by federal law for all motor vehicle transfers)
• Signatures of both the buyer and the seller
• Purchase price (used to calculate Illinois Private Party Vehicle Use Tax on Form RUT-50)
• Odometer reading at the time of sale (required by federal law)

Illinois does not require a separate vehicle bill of sale form for private-party car sales. For title transfer, the seller must sign the vehicle title over to the buyer. However, a bill of sale is essential because the buyer must file Form RUT-50 (Private Party Vehicle Use Tax) with the Illinois Department of Revenue, and the purchase price from the bill of sale is used to calculate the tax owed.

Without a documented purchase price, the Illinois Department of Revenue may use the vehicle's fair market value to calculate the Private Party Vehicle Use Tax.

No. Illinois does not require a vehicle bill of sale to be notarized for it to be valid. An Illinois car bill of sale is enforceable without notarization.

Notarization is not required by the Illinois Secretary of State or the Illinois Department of Revenue for vehicle title transfers or RUT-50 filings.

A Illinois bill of sale has no expiration date. Once both parties sign it, it becomes a permanent legal record of the transaction. Neither party needs to renew or re-execute the document—it remains valid indefinitely as long as it accurately reflects the completed sale.

Both the buyer and the seller should keep their signed copies for their personal records. For vehicle transactions, retain the bill of sale until the Illinois Secretary of State has processed the title transfer and issued a new title in the buyer's name. The document may also be needed as proof of purchase for insurance, tax verification, or future ownership disputes.

PDF Guru provides a ready-to-use Illinois Bill of Sale template preloaded in our online editor. There is no need to download or upload anything in advance—simply open the form, fill in all required fields, add your electronic signature, and download the finished document as a PDF.

Illinois does not publish a single mandatory bill of sale form for all transaction types. PDF Guru's template covers all the information required for a valid Illinois bill of sale. Delivering the signed document and handling the title transfer with the Illinois Secretary of State is your responsibility.

PDF Guru makes it easy to sign your Illinois Bill of Sale online without printing or scanning. Once you have completed all required fields in the form, use the Sign tool in the editor. You can draw your signature with a mouse or trackpad, type your name, or upload a saved signature image. Position the signature in the designated field for the seller — if both parties are signing digitally, the buyer can do the same before the final download.

When your signatures are in place, click Done to download the completed PDF to your device. For most private car sales in Illinois, an electronic signature is accepted on the bill of sale. Note that Form RUT-50 (Private Party Vehicle Use Tax), which must be filed separately, may require a handwritten signature — confirm with the Illinois Secretary of State's office.