© 2026 Wealth Care Lawyer — Klaus Gottlieb, Esq. Serving the California Central Coast.
Jurisdiction: California
Primary Statutes: Cal. Veh. Code §§ 4150.5 (co-ownership), 4150.7 (TOD registration), 5910, 9916 (REG 5 affidavit); Cal. Prob. Code §§ 13050, 13051, 13100–13116 (small estate procedures); Cal. Prob. Code §§ 15200–15211 (trust administration)
Key Forms: DMV REG 5 (Rev. 12/2024); DMV REG 101 (Statement of Facts)
Key Cases: None controlling
Last Reviewed: March 2026
Category: Estate Planning — Asset Titling and Funding
When a California vehicle or vessel has more than one owner, the threshold question is not how the asset will transfer at death — it is how the co-ownership is expressed on the certificate of title. California law recognizes three conjunctions: “OR,” “AND,” and “AND/OR.” The choice of conjunction determines (1) whether either owner may act unilaterally during life to transfer or encumber the vehicle, and (2) the procedure required to clear title at the first owner’s death. Only after that question is resolved does the broader analysis of transfer mechanisms become relevant.
For titles showing a single owner (or after co-ownership has been resolved), California offers three mechanisms to transfer a titled vehicle or vessel at death without a formal probate proceeding: (1) the REG 5 affidavit (small estate affidavit), available when the gross estate does not exceed $184,500; (2) transfer-on-death (TOD) registration under Cal. Veh. Code § 4150.7; and (3) direct titling in the name of a revocable living trust. For the typical client with one or two ordinary automobiles, the standard practitioner advice — do not re-title the vehicles; the REG 5 affidavit or TOD registration is sufficient — is correct. That advice does not extend to high-value collector vehicles or vessels. A $500,000 yacht or a $300,000 collector automobile presents a different risk profile: if the vehicle or vessel is the estate’s single most significant asset, or if the total estate approaches or exceeds the small estate threshold, the REG 5 mechanism is unavailable, and the consequences of neglecting trust titling fall directly on the successor trustee and the beneficiaries.
Authority. Cal. Veh. Code § 4150.5 governs co-ownership of California-titled vehicles and vessels. It permits two or more persons to hold title simultaneously, and mandates different legal consequences depending on the conjunction used to join their names on the certificate of title.
Default rule. If no conjunction is specified between co-owner names, the DMV treats the title as though “AND” appears — represented on the certificate by a slash (/) between names. Practitioners should advise clients to confirm the conjunction explicitly at the time of titling rather than accept the default.
Under Cal. Veh. Code § 4150.5(a), a vehicle titled “A or B” is held in joint tenancy. Each co-owner is deemed to have granted the other the absolute right to transfer title and interest in the vehicle. The legal consequences are:
⚠️ CAUTION: Because either owner may transfer the vehicle unilaterally without the other’s consent, “OR” titling is inappropriate where the co-owners do not fully trust each other — for example, a parent and an adult child where the parent wishes to retain exclusive control during life.
A vehicle titled “A and B” creates a tenancy in common under Cal. Veh. Code § 4150.5. The legal consequences are:
⚠️ CRITICAL ISSUE: “AND” titling is the DMV default when no conjunction is specified. Clients who did not consciously choose their co-ownership structure may have “AND” on their title without realizing it. Confirm the conjunction before advising on post-death procedure.
“AND/OR” is the most commonly misunderstood option. It appears to offer a choice, but it does not:
| “OR” | “AND” | “AND/OR” | |
|---|---|---|---|
| Tenancy type | Joint tenancy | Tenancy in common | Joint tenancy with right of survivorship |
| Transfer during life | Either owner alone | Both owners required | Both owners required |
| At death of one owner | Passes to survivor automatically | Passes to decedent’s estate | Passes to survivor automatically |
| Probate required at death? | No | Potentially yes | No |
| REG 5 affidavit required? | No | Potentially yes (estate size limits apply) | No |
| Waiting period at death? | None | 40 days (if REG 5 used) | None |
| Death certificate required? | Yes | Yes (plus REG 5 or court authority) | Yes |
| Best use case | Spouses / fully trusting co-owners wanting simplicity | Co-owners requiring mutual consent for any transfer | Co-owners wanting mutual control during life, automatic survivorship at death |
The REG 5 affidavit (DMV Form REG 5, current revision December 2024) allows an heir, successor trustee, conservator, or guardian to transfer title to a California-titled vehicle or vessel without probate. The form derives its authority from Cal. Veh. Code §§ 5910 and 9916, which incorporate by reference the Cal. Prob. Code § 13100 small estate procedures.
The threshold test applies to the decedent’s entire estate, not to the vehicle alone. Under Cal. Prob. Code § 13100, the affidavit is available only when the gross fair market value of the decedent’s real and personal property in California — excluding property described in § 13050 (jointly held property, trust property, payable-on-death assets, and similar non-probate transfers) — does not exceed $184,500 for decedents dying on or after April 1, 2022. (For decedents dying before April 1, 2022, the threshold was $166,250.) At least 40 days must have elapsed since the date of death before the affidavit may be used.
The affiant must certify that no other person has a superior right to the vehicle or vessel, that the estate has no unsatisfied unsecured creditors (or that creditors have been paid), and that no probate proceeding is pending or has been conducted. The person who completes the REG 5 transfer takes the vehicle subject to the creditor liability provisions of Cal. Prob. Code §§ 13109–13113.
What counts toward the threshold — and what does not. The $184,500 figure is measured against the “probate estate” — a term that requires explanation for clients. A person’s total wealth and their probate estate are often very different numbers. Assets that pass automatically at death by operation of law or contract do not go through probate and are excluded from the threshold calculation under Cal. Prob. Code § 13050. This includes assets held in a funded revocable trust, jointly held property with right of survivorship, accounts with a named payable-on-death or transfer-on-death beneficiary, retirement accounts with a named beneficiary, and life insurance proceeds payable to a named beneficiary. Only assets that remain titled in the decedent’s name alone, with no such mechanism in place, count toward the $184,500 limit.
The practical implication cuts both ways. A client with a $3 million estate may have a probate estate of zero — if the trust is properly funded, the house is deeded to the trust, bank accounts have TOD designations, and retirement accounts have named beneficiaries. That client’s family can use the REG 5 affidavit for the car without any concern about the threshold. Conversely, a client of more modest means who has done no planning — no trust, no TOD designations, no joint tenancy — may find that even an ordinary estate exceeds $184,500 in probate assets, making the affidavit unavailable.
⚠️ CRITICAL ISSUE: The $184,500 threshold is calculated on the gross value of the estate’s probate assets — not net equity, not the vehicle alone, and not the total estate. A client whose trust is unfunded, with a vehicle worth $50,000, a bank account worth $100,000, and real property worth $80,000 all titled in personal name, has a probate estate exceeding $184,500 even though no single asset is large. The REG 5 affidavit is unavailable. Practitioners who advise clients to leave vehicles in personal name on the assumption the REG 5 will always be available must confirm that the total probate estate — excluding trust assets, joint tenancy property, and accounts with named beneficiaries — stays below the limit.
California allows vehicles (but not vessels registered under the Vehicle Code) to be registered with a TOD beneficiary under Cal. Veh. Code § 4150.7. At the owner’s death, the named beneficiary presents a death certificate to the DMV and title transfers without probate, regardless of estate size. TOD registration is revocable and can be changed at any time during the owner’s life.
TOD registration is the simplest mechanism for ordinary vehicles in estates where the total probate property may exceed the REG 5 threshold. It accomplishes the same probate avoidance as trust titling for the specific vehicle, without requiring formal re-titling in the trust name.
📌 PLANNING NOTE: California’s TOD registration applies to vehicles under the Vehicle Code. Vessels registered with the DMV under Cal. Veh. Code § 9840 et seq. may be eligible for TOD registration. However, federally documented vessels (documented with the U.S. Coast Guard National Vessel Documentation Center under 46 U.S.C. § 12101 et seq.) are governed by federal law and are not subject to California’s TOD vehicle registration procedures. A high-value yacht documented with the Coast Guard requires a different planning approach entirely — see below.
A revocable living trust holds legal title to any asset transferred into it. For vehicles and vessels, this means the title or documentation certificate reflects the trust as owner — typically in the form “Jane Doe and John Doe, Trustees of the Doe Family Trust dated [date].” At the owner’s death, the successor trustee administers and transfers the asset under the trust instrument without any DMV affidavit, probate proceeding, or estate size limitation.
For California DMV-registered vehicles, re-titling into a revocable trust requires completing DMV Form REG 101 (Statement of Facts) and presenting the existing certificate of title. For federally documented vessels, re-titling requires filing a new Application for Initial Issue, Exchange, or Replacement of Certificate of Documentation (CG-1258) with the U.S. Coast Guard NVDC, listing the trust as the documented owner.
A revocable trust is transparent for income tax, gift tax, and estate tax purposes during the grantor’s lifetime — the IRS treats trust assets as owned by the grantor. For auto insurance purposes, insurers treat a revocable trust as the grantor’s personal property, and policies are not required to be re-written. Practitioners should advise clients to notify their insurer of the title change, but the change does not typically affect coverage or rates.
The following comparison applies once title is in a single owner’s name — either because there was never a co-owner, or because the co-ownership conjunction produced an automatic survivorship transfer (“OR” or “AND/OR”) and the survivor now holds sole title. For co-owned titles where the decedent’s share must be separately cleared (“AND” titles), see the Co-Ownership section above.
| REG 5 Affidavit | TOD Registration | Direct Trust Titling | |
|---|---|---|---|
| Applies to | Vehicles and DMV vessels | Vehicles (DMV-registered) | Vehicles, DMV vessels, and Coast Guard-documented vessels |
| Estate size limit | Yes — $184,500 gross probate estate | None | None |
| Waiting period | 40 days post-death | None (at death) | N/A (lifetime transfer) |
| Probate avoided? | Yes | Yes | Yes |
| Action required at death | Affiant presents REG 5 to DMV | Beneficiary presents death certificate | Successor trustee acts under trust instrument |
| Appropriate for high-value vehicles? | Only if total probate estate stays below threshold | Yes, for DMV vehicles | Yes — preferred for high-value vehicles and all vessels |
| Federally documented vessels | Not applicable | Not applicable | Yes — requires Coast Guard re-documentation |
The default recommendation in California — that ordinary automobiles need not be re-titled in the trust — rests on two premises: (1) the REG 5 or TOD mechanism will be available and sufficient, and (2) the administrative burden of re-titling outweighs the benefit. Both premises break down when the vehicle or vessel is high in value.
Collector vehicles. A collector automobile worth $300,000 or more changes the estate calculation materially. If the vehicle is the estate’s principal tangible asset and no other probate assets exist, the REG 5 threshold may be breached by the vehicle alone. More importantly, a high-value collector vehicle is unlikely to be sold promptly after death — the successor trustee or beneficiaries may hold it for years, insure it as a collector item, or include it in a collection with specific distribution instructions. Trust titling allows the trustee to manage the vehicle under the trust instrument immediately, without DMV administrative proceedings and without triggering an estate size analysis at death. Commentators consistently advise that collector vehicles and collections above the small estate threshold should be titled in the trust.
Yachts and high-value vessels. A vessel worth $500,000 breaches the REG 5 threshold on its own. California’s TOD registration procedure, which works well for automobiles, does not apply to federally documented vessels. A yacht documented with the U.S. Coast Guard is a federal instrument, and its transfer at death is governed by federal maritime documentation law and the applicable state probate or trust procedures — not by California’s Vehicle Code. The practical consequence is that a federally documented yacht held in personal name at the owner’s death will require either full probate or a federal documentation procedure that, without trust titling, is more complex than any of the California DMV alternatives. Direct trust titling at the time of acquisition is the cleanest solution: the trust holds legal title on the Coast Guard documentation certificate, and the successor trustee re-documents the vessel in the beneficiary’s name after death under the trust instrument.
A secondary consideration for high-value vessels is multi-state or international operation. If a vessel is documented in California but routinely kept in another state or jurisdiction, the owner’s death could in principle trigger both California trust administration and a foreign jurisdiction’s probate proceeding — an “ancillary probate” — if the vessel is not in the trust. Trust titling eliminates this exposure because the governing instrument is the trust, not any particular state’s probate code.
⚠️ CRITICAL ISSUE: A federally documented vessel cannot use California’s DMV vehicle TOD registration. Cal. Veh. Code § 4150.7 applies to vehicles registered under the Vehicle Code. Federal documentation under 46 U.S.C. § 12101 is a separate system administered by the Coast Guard NVDC, and California has no authority to impose a TOD mechanism on a federally documented title. Practitioners who assume TOD registration covers a client’s documented yacht are mistaken. The correct mechanism is either direct trust titling or, at death without prior planning, a federal re-documentation procedure supported by probate court authority.
A commonly cited reason to avoid trust titling of vehicles is the claim that titling a vehicle in a revocable trust increases litigation exposure — that plaintiffs will infer the presence of other trust assets from the vehicle title and target the broader estate. This argument has been widely criticized by practitioners as unfounded. A revocable trust is not a separate legal entity for liability purposes; it is the grantor personally. Trust assets are not insulated from the grantor’s personal torts, and a plaintiff injured in a vehicle accident does not gain access to additional trust assets merely because the vehicle is trust-titled rather than personally titled. The liability objection has more traction for irrevocable trusts or LLCs, where the entity itself may appear to signal wealth — but even there, a plaintiff’s attorney will quickly identify trust assets through discovery.
Step 1 — Confirm Co-Ownership Structure
Step 2 — Decision Framework by Vehicle Type
Drafting Considerations for High-Value Vehicles and Vessels
This article is provided for educational purposes and reflects California law as of March 2026. It does not constitute legal advice. Readers should verify current DMV forms, Coast Guard documentation procedures, and statutory thresholds before advising clients, as these are subject to periodic revision.
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