California REG 135 — Bill of Sale
REG 135 is the California DMV's Bill of Sale form. A bill of sale is needed only in some situations — when the seller is not the owner named on the title, or in place of the registered owner's release signature on the title. Otherwise the signed title, with the purchase price entered on it, carries the transfer. Sellers should also file REG 138 (Notice of Transfer and Release of Liability) within 5 days of the sale.
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State rules change. We check these requirements against official state sources, but details can go out of date. Confirm with your state's motor vehicle agency before you rely on them. If you notice anything wrong or outdated, email support@billofsale.app.
About REG 135
Official name: California DMV REG 135 — Bill of Sale
Issued by: California Department of Motor Vehicles
Purpose: Documents the private sale of a vehicle in California. Needed when the seller is not the owner named on the title (signed by both), and it can stand in for the registered owner's release signature on the title; in an ordinary sale the purchase price is entered on the title itself.
When required: Required only in some situations: when the seller is not the owner named on the title, or when used in place of the registered owner's release signature. Otherwise optional, as a record of the sale. The buyer must transfer the title within 10 days. The seller must file REG 138 within 5 days of the sale date.
What REG 135 looks like
REG 135 is the California DMV's Bill of Sale (current version REV. 2/2007). The page holds two identical copies. You fill in both, cut on the line, and each side keeps one; the form tells you to save a copy for your records.
What each part asks for
- Vehicle or vessel description: the identification number (VIN or hull number), year, model, make, and the license plate or CF number. For a motorcycle, add the engine number.
- The sale: the seller's name or names, the buyer's name or names, the date, and the selling price.
- A gift: instead of a price, the gift value and the relationship between you, such as parents, spouse or friend.
- The seller block: each seller prints their name, signs, dates it, and adds a driver license, ID or dealer number, plus a mailing address and daytime phone.
- The buyer block: each buyer's printed name and mailing address.
What the seller certifies
The seller signs under penalty of perjury under the laws of the State of California that the information is true and correct. There is no notary step on the form.
When California needs a bill of sale
- When the seller is not the owner named on the title: the DMV needs a bill of sale signed by both the seller and the titled owner.
- In place of the registered owner's release signature on the title.
- Otherwise it is optional. The signed title, with the purchase price written on it, carries the transfer, and REG 135 is a useful record of the sale.
Deadlines for both sides
- Seller: file REG 138, the Notice of Transfer and Release of Liability, within 5 days of the sale.
- Buyer: send the endorsed title and the transfer fee to the DMV within 10 days.
- Buyer: pay use tax when you register the vehicle, because it was not bought from a licensed California dealer.
California Vehicle Sale Requirements
What to Include in a California Bill of Sale
A complete bill of sale usually includes:
- Seller name and address
- Buyer name and address
- Vehicle year, make, model, color
- VIN or HIN
- Odometer reading
- Sale price
- Date of sale
- Seller and buyer signatures
Official Source
Download the official REG 135 directly from California DMV, or use our free generator above to pre-fill a state-specific California bill of sale.
Frequently Asked Questions
Is REG 135 required by California DMV?
What is REG 138 and do I need it?
Does California charge sales tax on private vehicle sales?
Does REG 135 need to be notarized?
How do I show a gift on REG 135?
Sources we checked
- REG 135 Bill of Sale (REV. 2/2007), California DMV (read 2026-09-25)
- Registering a vehicle purchased from a private party, California DMV (read 2026-09-14)
- 1.020 Bill of Sale (VC §1652), DMV registration procedures manual (read 2026-09-14)
- California Vehicle Code §5902 (read 2026-09-14)
California Templates by Vehicle
California Bill of Sale Hub
All California requirements: notarization, transfer deadlines, tax rates, and additional forms.
View California guide →