Complete Guide To The CA DMV Bill Of Sale Form (REG 135) For 2026
Note: This article strictly covers the California Department of Motor Vehicles (DMV) REG 135 Bill of Sale form required for vehicle and vessel transfers within the state of California for the year 2026.
Navigating vehicle ownership transfers in California requires strict adherence to state documentation guidelines. Whether you are purchasing a pre-owned sedan from a private party in Los Angeles or selling a boat docked in San Diego, the California Department of Motor Vehicles mandates specific paperwork to legally release liability and establish ownership. At the center of this transaction sits the official California DMV Bill of Sale form, formally known as the REG 135.
Using the correct form protects both the buyer and the seller from future legal liabilities, tax discrepancies, and ownership disputes. Understanding how to properly execute this document ensures your transaction meets all current California DMV mandates for 2026.
Understanding the Purpose and Legal Weight of REG 135
The California DMV Bill of Sale (REG 135) serves as a legally binding receipt of the financial exchange between a buyer and a seller. While California vehicle code does not legally mandate a notarized bill of sale for every private vehicle transfer—provided the appropriate sections on the California Certificate of Title (REG 227 or standard title) are fully completed—submitting or retaining a completed REG 135 is vital for tax calculation and dispute resolution.
The California Department of Tax and Fee Administration (CDTFA) relies on the purchase price declared on the bill of sale or the vehicle's estimated value to calculate the correct use tax. Omitting this form or misrepresenting the purchase price can trigger audits, delayed title transfers, and financial penalties from the state.
Core Components Required on the CA DMV Bill of Sale
To ensure validity and prevent rejection by DMV processing clerks, every California bill of sale must contain specific foundational data points. Submitting a handwritten scrap paper receipt often results in rejected title applications.
A compliant REG 135 or equivalent private bill of sale must clearly feature the following elements:
- Vehicle Identification Number (VIN): A 17-character alphanumeric code unique to motor vehicles, or the Hull Identification Number (HIN) for vessels.
- Vehicle Details: Year, make, model, and body type.
- Transaction Date: The exact calendar day the exchange of funds and possession occurred.
- Purchase Price: The total monetary consideration paid for the asset.
- Buyer Information: Full legal printed name, current residential address, and signature.
- Seller Information: Full legal printed name, current residential address, and signature. If multiple owners are listed on the title, all designated parties typically need to sign depending on the conjunction ("AND" versus "OR").
Vehicle Bill of Sale. Printable Motor Vehicle Sale Contract. Vehicle ...
Step-by-Step Execution Guide for Buyers and Sellers
Executing a vehicle transfer via private party sale in California involves a structured sequence of actions. Follow this operational workflow to safeguard your interests during the transaction.
- Verify Ownership and Title Status: Before exchanging funds, the buyer must inspect the physical California Certificate of Title. Ensure the seller's name matches their government-issued identification and that there are no active liens listed on the face of the title.
- Complete Smog Certification: Under California law, the seller is legally responsible for providing a valid smog inspection certification to the buyer upon sale, unless the vehicle is exempt (e.g., gasoline-powered vehicles less than four model years old, electric vehicles, or diesel-powered vehicles manufactured prior to 1998 or with a gross weight rating over 14,000 lbs). Smog certificates are electronically transmitted directly to the DMV database.
- Draft and Sign the Bill of Sale: Complete the REG 135 form or a comparable written bill of sale containing all required vehicle specifications, names, addresses, and signatures of both parties.
- Fulfill Title Sign-offs: The seller must sign and date line 1 of the California title (Release of Ownership) and record the current odometer reading in the designated section. The buyer must sign and print their name in the appropriate acceptance sections.
- Submit Notice of Transfer and Release of Liability (NRL): Within 5 calendar days of the sale, the seller must submit a Notice of Transfer and Release of Liability to the California DMV online or via mail. This protects the seller from parking tickets, toll violations, or liability if the buyer fails to transfer the title promptly.
- Complete Final Registration Transfer: Within 10 days of the purchase, the buyer must submit the signed title, smog certificate (if applicable), completed bill of sale, and applicable fees to a local DMV field office or through an authorized partner service.
Comparative Overview of Documentation Requirements
Different vehicle classes and transfer scenarios carry distinct documentary prerequisites under California law. The following matrix outlines what is necessary based on the asset type.
| Asset Type / Scenario | Mandatory Form | Smog Required? | NRL Required? | Timeframe for Submission |
|---|---|---|---|---|
| Standard Private Auto Sale | REG 135 / Certificate of Title | Yes (with standard exemptions) | Yes (Seller responsibility) | Within 5 days (NRL) / 10 days (Title) |
| Vessel / Boat Transfer | REG 135 / BOAT 101 | N/A | No (Vessels use Department of Boating and Waterways rules) | Within 30 days |
| Gift Between Immediate Family | REG 135 + REG 256 (Statement of Facts) | Yes (unless biennial exemption applies) | Yes | Within 10 days |
| Vehicle Sold to Salvage/Junk | REG 42 (Report of Vehicle to be Dismantled) | No | Yes | Within 10 days |
Operational Warning for Buyers and Sellers: Never accept or leave a bill of sale blank regarding the purchase price. Entering "gift" or a nominal dollar amount like $1 when a significant financial transaction occurred constitutes tax evasion under California law and triggers aggressive audits by the CDTFA.
Common Pitfalls and Troubleshooting Tips
Even experienced buyers and sellers make errors during private vehicle transactions in California. Avoiding these common missteps prevents administrative delays at the DMV window:
- Mismatched Odometer Readings: The mileage recorded on the bill of sale, the physical odometer at the time of sale, and the title odometer section must match logically. Discrepancies require a REG 256 Statement of Facts explaining the error.
- Incomplete Signatures: If the title lists "John Doe OR Jane Doe," only one signature is required to release ownership. If the title lists "John Doe AND Jane Doe," both signatures are mandatory. Ensure the bill of sale reflects these matching execution standards.
- Failing to Keep Copies: Always retain a clear physical or digital copy of the signed bill of sale, the completed release of liability confirmation number, and the front and back of the signed title for at least three years post-sale.
Frequently Asked Questions
Is the California DMV bill of sale form (REG 135) legally required to be notarized?
No, the California DMV does not legally require the REG 135 bill of sale to be notarized for standard private vehicle transfers, provided the signatures on the official Certificate of Title are properly executed. However, notarization provides an extra layer of identity verification that can protect against fraud.
What should I do if I lose the original California Certificate of Title?
If the title is lost, stolen, or heavily damaged, the registered owner must complete and submit an Application for Replacement or Transfer of Title (REG 227) along with the applicable replacement fee to obtain a duplicate title before finalizing the sale, or process the transfer concurrently using the duplicate title request paperwork.
Who is responsible for paying the vehicle transfer and use taxes?
The buyer is legally responsible for paying all transfer fees, registration renewal fees, and applicable use taxes based on the purchase price and the county of residence at the time of title transfer. The seller pays no state transfer fees.
How soon must the seller submit the Notice of Transfer and Release of Liability?
The seller must legally submit the Notice of Transfer and Release of Liability (NRL) to the California DMV within 5 calendar days of handing over possession of the vehicle to the buyer. This action legally severs the seller's civil liability regarding the vehicle's subsequent operation.
Can I use a generic bill of sale instead of the official California REG 135 form?
Yes, the California DMV accepts custom or generic bills of sale as long as they contain all essential data points, including vehicle description, VIN, names, addresses, purchase price, and the signatures of both the buyer and the seller.
Final Recommendations for a Secure Transaction
Completing a private vehicle or vessel transaction in California demands thoroughness and careful documentation. Always prioritize meeting in a safe, well-lit public area—such as a local bank parking lot or designated police exchange zone—when handling cash or cashier's checks. By meticulously completing the California DMV bill of sale form, filing your release of liability promptly, and verifying all smog and title documents, you ensure a legally compliant transition of ownership that protects your financial and legal standing throughout 2026.
