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California car bill of sale Do you need one? And what else does California require?

Expect one — DMV's checklist lists it. Below: the title signature, the plates, telling the state, and the odometer — each with the source it came from.

Do you need a separate bill of sale?

Expect one — DMV's checklist lists it

DMV's title transfer checklist lists a bill of sale under required documents: use the Bill of Sale (REG 135) to record the price and date. DMV's procedures manual leaves it off its list of basic transfer documents. Any bill of sale that identifies the vehicle is accepted, and it does not need a notary or a witness. Section 2 of the Vehicle/Vessel Transfer and Reassignment Form (REG 262) is also a bill of sale. The REG 262 is accepted in place of the registered owner's signature on line 1 of the title, and it carries the odometer disclosure too.

Source: DMV, Standard Title Transfer checklist; CA DMV Procedures Manual 1.020, 5.075 and 11.015

Does the title need a notary or witnesses?

Neither — but who signs is exact

No notary and no witness on the title. One exception: if the title is missing and a lender is on record, section 5 of the replacement title form (REG 227) must be notarized. What California does police is WHICH owner signs. Co-owners joined by “and” — every owner signs. Joined by “or” or “and/or” — one signature is enough. Joint Tenants with Right of Survivorship — every owner signs. A business entity needs the entity name and an authorized representative's countersignature; a trust needs the trust's name and the signature of every trustee shown on the title.

Source: CA DMV Vehicle Industry Registration Procedures Manual 11.015 (VC §§ 5603, 5751, 5753) and 1.135; DMV, Title Transfers and Changes

What happens to the plates?

They stay with the car

California's standard, sequentially issued plates go with the vehicle when it is sold — they are not owner-issued and they are not yours to remove. Only special and personalised plates are: a special-plate owner may reassign them to another vehicle registered to them. Most cannot go to another person. They can stay on the sold vehicle only if the plate owner releases them and the buyer wants to keep them. A personalised plate owner may also keep the plates off any vehicle by paying the retention fee each year. If you have special plates, deal with them before the sale; if you have ordinary plates, leave them on.

Source: CA DMV Procedures Manual 21.200, 21.235 and 21.245 (VC §§ 5108 and 5109); DMV, License Plates

Do you have to tell the state you sold it?

Yes. Within 5 calendar days

VC §§ 5602 and 5900: the registered owner, or the person in physical possession of the vehicle being sold, must submit a completed Notice of Transfer and Release of Liability — form REG 138 — to DMV within five calendar days of the sale. File it online or mail the form. What it buys: an owner who has transferred and delivered possession AND a properly endorsed title is not subject to civil or criminal liability for the parking, abandonment or operation of the vehicle by another — but only if the notice was filed, or the papers and fees to transfer ownership were sent to DMV. And DMV cannot update the record at all if the transfer date is missing. Submitting the notice is NOT itself a transfer of ownership; the buyer still has to do their part.

Source: CA DMV Procedures Manual 11.125 (VC §§ 5602 and 5900); form REG 138 Rev. 3/2024

Where does the odometer reading go?

On the title, or on REG 262

For a vehicle less than 20 model years old, the mileage disclosure must be entered on a complying title, or on a Vehicle/Vessel Transfer and Reassignment Form (REG 262). Federal rules exempt a 2010 or older model year vehicle, a vehicle rated over 16,000 pounds, and a vehicle that is not self-propelled. You will also need the reading a second time — the release of liability notice asks for the odometer at the time of sale, so write it down before the ${nounIt()} leaves.

Source: CA DMV Procedures Manual 5.025, 11.015 and 11.125; 49 CFR 580.5(c) and 580.17

The forms California publishes

  • Notice of Transfer and Release of Liability (REG 138) — Yours to file, within 5 days, online or by post. Nothing in the kit replaces it. Where: dmv.ca.gov/nrl. Revision: Rev. 3/2024.
  • Vehicle/Vessel Transfer and Reassignment Form (REG 262) — Stands in for the title's release line, and carries the odometer disclosure. Where: Not online. Call DMV at 1-800-777-0133 to have one mailed.. Revision: not confirmed.
  • Lien Satisfied/Legal Owner/Title Holder Release (REG 166) — Only if a lender is still on line 2 of your title. It must be notarized. It cannot be used for a vehicle two model years old or newer, or one with a paperless title. Where: dmv.ca.gov → Forms. Revision: Rev. 12/2016.

Selling here, registering somewhere else

These are the rules where you are selling, not where the buyer is taking it. The title is signed under California’s rules, and the plate and the notice are yours to handle here.

Registering it and paying tax falls under the buyer’s own state’s rules.

How California compares

Counted from the same answers, for all fifty states.

See how California compares with the other 49 states
  • California is with the majority: no notary or witnesses on the title signature. Only 7 states want one — Kentucky, Louisiana, North Carolina, Ohio, Oklahoma, Pennsylvania and Wyoming.
  • California is one of 4 states where the plates stay with the vehicle. The others are Alaska, Hawaii and Minnesota. Almost everywhere else they stay with the seller or go back to the state.
  • California gives the seller 5 days to notify the state. 15 states set a day count for that notice: 5 days is the shortest, shared with Colorado, Idaho, Nevada and Washington.

Ready to handle the paperwork?

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What this page is

Every answer above was checked against California’s own published material on Oct 12, 2026. It describes the rules; it is not advice about your sale. State forms get revised — the agency’s current page is what governs.