Boat Registration in California: Fees & Process (2026)

1. The Short Answer: What It Costs, in One Table

There is no single price for registering a boat in California, because the bill depends on the year you register and where you use the boat. But the lines are the same for everyone, and they are all on the DMV’s own pages, read live on November 7, 2026. Here is the whole bill at a glance, before the worked examples in section 4 show the arithmetic for real boats.

Three things in that table deserve emphasis before you go further. First, the odd year costs almost twice the even year, and that is by design. California registration expires on December 31 of every odd-numbered year, so a boat registered in an odd year is covered for a full two-year cycle while a boat registered in an even year is covered only until the next odd-year December 31. The $29/$49 split and the $21/$42 mussel split both follow the same cycle. Second, the mussel sticker is a separate transaction, not a line on the registration bill. Federal regulations require it to be purchased separately — online at dmv.ca.gov/musselfee, at a field office, or at a participating AAA office — and you get two stickers, one for each side of the hull. Third, use tax is not a DMV fee at all, and it is the only line that can be bigger than all the DMV fees put together. At Sacramento’s combined rate of 8.75%, use tax on a $10,000 boat is $875. Section 12 works through the use-tax rules and the credit for tax you already paid to another state.

One more number to carry in your head: the current registration term runs through December 31, 2027. Every California-registered vessel, whenever it was first registered, expires on that date and must be renewed by midnight. If you are registering for the first time in late 2026, you are buying a short first term — and the DMV’s own manual says original applications submitted within 30 days of the expiration date also owe the biennial renewal fee, and originals submitted on or after January 1 of the expiration year owe the original fee plus 50% of the biennial renewal fee. Registering in December is the worst-value month; if you can wait until January, do.

2. Who Has to Register — and Who Doesn’t

California’s rule is short, and it is on the DMV’s Boat/Vessel Registration page in plain language: if you own a sailboat over eight feet long or a boat or vessel with a motor (no matter the size), you must register it with the DMV to legally operate it on California waterways. The statute behind it is Vehicle Code §9850: every undocumented vessel using the waters of this state must be currently numbered. “Undocumented” means the vessel is registered with the DMV and does not have a marine certificate from the U.S. Coast Guard. A new boat is automatically undocumented, so it must be DMV-registered before it goes on California water. And the rule reaches further than most owners expect: any vessel that travels or is moored in California waterways, including private lakes, must be registered. There is no exemption for a boat used only a few times a year, or kept on private water.

The edge cases are where real owners get confused, and the top-ranking guides barely cover them. A kayak is exempt while it is human-powered only — the moment you clamp a trolling motor onto it, it must be registered. A sail-and-pedal hybrid craft (the kind owners argue about on boating forums) sits in genuinely ambiguous territory: the DMV’s exemption language turns on “solely” — solely by oars or paddles, solely by sail — and a craft that is neither solely one nor solely the other is not clearly exempt. If you are unsure, register it; the DMV will not penalize you for registering a vessel that did not strictly need it, but operating an unregistered vessel that did need it is the violation. A dinghy is the most common surprise: many owners assume the tender is covered by the mothership’s registration. It is not — the DMV states flatly that dinghies must be registered. And a houseboat with a motor must be registered even though it looks like a floating home; only a floating structure tied to land, with shore power, water, and sewage, is exempt.

One more boundary worth stating plainly: commercial vessels over five net tons and longer than 30 feet must be documented by the U.S. Coast Guard — they do not get a DMV registration at all. Smaller commercial vessels and pleasure craft can also be documented voluntarily if they measure five net tons or more, and a documented vessel is exempt from DMV registration. Section 11 covers the documented-versus-undocumented split in full, because it changes the fees, the use tax, and the paperwork.

3. The Even-Year / Odd-Year Cycle, Explained

Almost every fee question about California boat registration comes back to one fact: every California vessel registration expires on December 31 of every odd-numbered year (Vehicle Code §9861). There is no anniversary-date renewal like a car. Every boat in the state shares the same deadline, and the DMV mails a renewal notice 60 days before it. The current term ends December 31, 2027; the next term ends December 31, 2029.

* 2028/2029 figures assume the fee lines do not change; the mussel fee is adjusted for inflation in odd-numbered years under AB 149, so the 2029 sticker may cost more than $42.

Why the odd year costs more is visible in the DMV’s own manual, which gives two worked examples: a vessel sold in an even year (2006 in the manual’s example) is assigned an expiration date of December 31 of the following odd year (2007) and owes the original registration fee plus the renewal fee for 2007; a vessel sold in an odd year (2007) is assigned an expiration date of December 31, 2009 — a full two-year cycle. So the odd-year buyer pays for two years of registration and the even-year buyer pays for roughly one. That is the entire logic of the $29/$49 split, and it is also why the mussel sticker follows the same split: $21 for the short first term, $42 for the full two-year cycle.

Two timing traps follow from the cycle. First, December is the worst month to register. The manual says original applications submitted within 30 days of the expiration date also owe the biennial renewal fee, and originals submitted on or after January 1 of the expiration year owe the original fee plus 50% of the biennial renewal fee. A boat registered in December 2027 would owe the original fee and then need renewal almost immediately. If the purchase can wait until January, it should. Second, the renewal deadline is midnight, not the end of the business day. The manual states registration must be renewed on or before midnight of December 31 to avoid the 50% penalty — and a late renewal is a flat $10 on a $20 renewal, as section 7 explains.

4. Every Line on the Bill, Explained

The DMV’s fee pages are the only source that matters for the dollar figures on this page, and two of them disagree with each other on one line. This section prints both, shows the arithmetic, and tells you which figure to trust. Every figure below was read on dmv.ca.gov on November 7, 2026.

The original registration fee: $29 (and the $9 inside it)

Vehicle Code §9853(a) sets the application fee at $9, “in addition to the fees required under subdivision (b)” — the renewal portion, which is $10 for a one-year period or $20 for a two-year period. The DMV’s public Registration Fees page prints the bundled result: $29 for a vessel sold in an even year, $49 for a vessel sold in an odd year. The DMV’s Agents Handbook — the manual its own agents work from — prints the same $29 original fee for both years, and then adds the renewal portion on top: $29 + $10 (even) or $29 + $20 (odd). The two presentations agree on the odd year ($49) and disagree on the even year. The box below lays out the disagreement honestly, because a page that hides it would be less useful than a page that shows it.

The mussel fee: $21 / $42 — the figure that changed in October 2026

Assembly Bill 2443 (Chapter 485, Statutes of 2012) authorized the California Department of Parks and Recreation, Division of Boating and Waterways (DBW) to require the DMV to collect an invasive mussel infestation prevention fee. Since 2013 the fee has been due on all DMV-registered vessels that boat in freshwater. The fee was $8 in an even year and $16 in an odd year for more than twelve years — and on October 22, 2026, it changed. Assembly Bill 149 (Chapter 106, Statutes of 2025, effective September 17, 2025) rewrote Harbors and Navigation Code §675: for fees due in calendar year 2026 and after, the fee is $21 when first paid in an even-numbered year and $42 when first paid in an odd-numbered year, and the $42 amount covers the full two-year cycle. The statute caps the amounts ($15–$21 even, $30–$42 odd) and requires an inflation adjustment every odd-numbered year using the California Consumer Price Index. The reason for the increase is the golden mussel, first detected in the Sacramento–San Joaquin Delta and O’Neill Forebay in October 2024 and since spread more than 400 miles; the program now covers quagga, zebra, and golden mussels.

Three official sources confirm the new figures, and this page prints them because almost nobody else has caught up yet: the DBW Mussel Fee Sticker FAQ (revised October 2026) states the $21/$42 figures and explains that “DMV sent out the 2026 vessel registration notices before the Mussel Fee was increased”; the DMV’s own Mussel Fee Sticker Request page says “Be prepared to pay the $21 fee”; and California State Parks announced the change on October 24, 2026, noting that “for a boater purchasing a sticker for a full two-year cycle, the update increases the cost from $16 to $42.” If a guide you are reading still says $16, it is out of date — and so is the DMV’s own Agents Handbook §3.030, which still prints $8/$16 because it predates AB 149. The old figures appear on this page only in this paragraph, labelled as superseded. A replacement mussel sticker costs $42.

The mussel fee is due on original registration and on each renewal. It is not subject to a late penalty. It is collected separately from registration fees — federal regulations require the separate transaction — and the sticker must be displayed on the vessel next to the registration sticker as evidence of payment. The fee does not apply to vessels used exclusively in marine waters (coastal and bay waters, including Suisun Bay and the Delta west of Chipps Island). Freshwater means inland waterways, rivers, lakes, reservoirs, wetlands, and the Sacramento–San Joaquin Delta east of Chipps Island: if you boat there at all, you need the sticker. To claim the marine-only exemption, notify the DMV — on the BOAT 101 form or a REG 256 Statement of Facts stating “This vessel is used only in marine waters” (original applications), or by checking the box on the renewal notice, the DMV’s online renewal, or the phone system (renewals). You may pay the fee later if you claimed the exemption and then start boating in freshwater. Other exemptions: annual-exempt youth-group (type license V6) and government (V7) CF numbers, and dealer (V3) and manufacturer (V4) CF numbers. Non-payment of the mussel fee does not stop the DMV from issuing or renewing a registration — but operating a recreational vessel in non-marine waters without a valid sticker can draw a citation (VC §9853(c)(4); HNC §675(e)(3)).

The nonresident lines: $57 / $77

A vessel last registered outside California pays more at first registration: $57 in an even year, $77 in an odd year, per the DMV Agents Handbook §3.000. The difference from the resident figures is the $28 non-resident service fee (the same $28 service fee that appears on car registrations under VC §9252). Add the mussel sticker and the all-in nonresident totals are $78 (even) and $119 (odd) for a freshwater vessel. Note the caveat from section 4’s first box: the handbook’s nonresident figures are the only published source for them — the public Registration Fees page does not break out a nonresident vessel line — so treat them as handbook figures and confirm at the counter. Late nonresident originals carry penalties of $24 (even) / $29 (odd) in the handbook.

Worked examples: the real bill for real boats

Every example below uses the DMV fee-page registration lines, the new mussel fee, and a stated tax rate. Use tax is calculated at the local combined rate; Sacramento’s 8.75% is used because the DMV’s own handbook uses it in its worked example.

Example C needs a careful note: buying a used boat that is already California-registered is a transfer, not an original registration, so the bill is the $15 transfer fee plus use tax — the mussel fee is due on original registration and on each renewal, not on a transfer by itself, unless the renewal is also due. If the boat’s renewal is due at the same time, add the $20 renewal and the $42 sticker. Example D is the case that surprises people: the DMV fees are $78, but the use tax is $1,312.50 — seventeen times the DMV lines. That is normal for an out-of-state purchase, and it is why section 12 exists. Example E shows the credit working: California gives a dollar-for-dollar credit for the $750 paid to Nevada, so only the $562.50 difference is due.

Other lines you may see

Replacement title or registration: $15. Duplicate certificate of ownership, duplicate certificate of number, and substitute sticker are $15 each. Repossession: $15. Historical vessel plaque: $20 — for a power-driven wooden pleasure craft built before December 31, 1942 (VC §9853.5). Transfer-on-death beneficiary: $10 — you can name a beneficiary on the vessel’s title so it passes without probate (VC §§4150.7, 9852.7). Information requests by CF number: $2 electronic, $5 manual (VC §1811). Card surcharges apply to vessel payments the same as to car payments: credit or debit cards cost an extra 1.95% online, by phone, or at a kiosk, and 2.1% in a field office; paying from a bank account (eCheck), by check, or by money order avoids the surcharge. On a $1,390.50 bill, the 2.1% office surcharge is about $29 — worth avoiding with a check.

5. First Registration, Step by Step

First registration is a paper process, not an online one. The DMV’s online registration option covers renewals; a first registration is filed in person at a DMV field office, through a licensed registration service or authorized vessel agent, or by mail to DMV headquarters in Sacramento. The fees must be paid upon purchase, before the vessel is operated on California waters, and the manual is blunt about incomplete applications: never issue a CF number, sticker, or temporary operating permit on an incomplete original registration application. Bring everything the first time.

No title? There is still a path. If the original California Certificate of Ownership is lost, stolen, illegible, mutilated, or was never received, complete a REG 227 (Application for Duplicate or Paperless Title) to transfer — attach the damaged title if you have it, and a bill of sale can stand in for a missing releasing signature. If no ownership documents exist at all, the application is processed as an original registration with a BOAT 101 and a REG 256 Statement of Facts; a bond is required if the vessel is valued at $2,000 or more and ownership cannot be established. Since November 1989 the DMV issues electronic (paperless) titles, and a used vessel may be transferred with a paperless title — the REG 227 is still required, but there is no fee for the duplicate in that case. One competitor guide implies you simply cannot register a boat without a title. That is wrong; the no-title path exists, it just takes more paperwork.

Special cases. Livery and for-hire (rental) boats need a completed BOAT 101 and the original registration fee and use tax, unless a REG 256 is filed stating the tax on rental receipts will be paid to the Board of Equalization. Youth-group vessels need Section 8 (Special Use CF Numbers) of the BOAT 101 completed and signed by the person in charge of the group. Dealer and manufacturer vessel numbers use form BOAT 101A, and a dealer or manufacturer number not renewed before midnight of the expiration date needs a brand-new application and fee. Amphibious vehicle/vessels need two applications — one as a vehicle, one as a vessel — and end up with two separate expiration dates.

6. The CF Number and Stickers: How to Display Them

When you register, the DMV assigns a vessel registration number beginning with CF — the letters CF, four numbers, and a two-letter suffix, for example CF 1234 AB. The suffix never contains the letters I, O, or Q. The number is permanent to the vessel for as long as it stays California-registered; if a California-registered vessel is registered in another state and later returns, it is issued a new CF number on reregistration.

Display is governed by the DMV’s boat page and by California Code of Regulations §190.00, and one competitor gets it exactly backwards, so read this carefully:

• Paint or permanently attach the number to both sides of the bow (the forward half of the vessel).
• Plain, vertical block letters and numbers more than three inches high — not “not exceeding three inches,” as one ranking guide says. At least three inches; bigger is fine.
• Arranged so it reads from left to right, in a color that contrasts sharply with the hull.
• Separate the groups with spaces or hyphens the width of a letter: CF 1234 AB or CF-1234-AB. Put no other numbers or letters near it.
• The registration sticker goes on both sides of the bow, three inches from the CF number, and must be clearly visible at all times. Place nothing else near the registration sticker except the CF number and the mussel fee sticker.
• The mussel fee sticker goes next to the registration sticker — on the starboard side immediately to the left of the CF number, on the port side immediately to the right, per the DMV’s placement diagram. You receive two stickers, one per side.

Special CF number series exist for special uses, issued only by DMV headquarters (not field offices or agents): DA–DZ for dealers, LA/LB/LD/LE for livery (rental/passenger) vessels, LC for government-owned livery (fee-exempt), MA–MY for manufacturers, XC for city/county, XF for federal, XS for state, and YB for youth groups (fee-exempt). A special number generally cannot be transferred unless the new owner qualifies for the same kind. The two-letter suffix also identifies fee-exempt renewals: LC means government-owned livery.

Display violations are the cheapest mistakes on this page to avoid and the most common reason a boat gets stopped. A number that is too small, the wrong color, on only one side, or crowded by decorative lettering is a citable defect — and the fix is a $15 substitute sticker and a fresh set of vinyl letters, not a fine schedule. Measure before you stick.

7. Renewal: $62 Every Two Years, by December 31 of Odd Years

Renewal is the simplest transaction on this page and the one most owners get wrong by forgetting it. Your registration expires on December 31 of every odd-numbered year, even if you do not use the vessel — the current term ends December 31, 2027. The DMV mails a renewal notice 60 days before expiration. If you do not receive it or lose it, contact the DMV and pay the fees anyway; the notice is a courtesy, not a condition.

Renew in any of four ways: online (check eligibility on the DMV’s online registration page — not every vessel qualifies for online renewal); by phone on the automated system at 1-800-777-0133; by mail to Vehicle Registration Operations, Department of Motor Vehicles, PO Box 942869 MS C271, Sacramento, CA 94269-0001 (return the bottom portion of the renewal notice with a check, cashier’s check, or money order); or in person at a DMV field office. One paid registration service on Google prints a different renewal phone number, (800) 921-1117. That is not the DMV’s number. Use 1-800-777-0133.

Three renewal rules catch owners out. First, there is no planned non-operation for boats. The DMV’s handbook states that a Planned Nonoperation “cannot be filed for vessels and trailer coaches, which must be registered at all times regardless of use,” and a REG 102 form is not acceptable for vessels. A boat on a trailer in a garage for two years still owes the renewal. Second, the vessel must be located in California to be renewed — if it has moved, correct the situs (principal location) on the renewal. Third, renewal can be blocked by unpaid property taxes: if the county tax collector reports unpaid vessel personal property tax, the DMV may deny the renewal (VC §9880). Pay the county first, then renew. And a warning about your paper notice: the 2026 renewal notices were mailed before the mussel fee increase, so many show the old $16 figure. The correct sticker price from October 22, 2026 is $42 — trust the DBW FAQ and the DMV’s sticker-request page, not the paper notice.

8. Buying a Used Boat: The Transfer

Buying a used boat in California is a transfer, not a new registration, and two clocks start the day money changes hands. The DMV’s boat page gives the seller’s side and the buyer’s side in the same paragraph; this section separates them, because each side has its own deadline and its own penalty.

The buyer’s side

When you buy a boat from another person, get the California Certificate of Ownership from the seller, signed and endorsed on line 1 by the seller. If there is a lienholder, you need their signature on line 2. Write your name and address on the back, then submit the certificate to the DMV along with the transfer fee, any use tax due, and any renewal fees that might be due. A Vehicle/Vessel Transfer and Reassignment Form (REG 262) or a Bill of Sale (REG 135) completes the chain of ownership where the certificate alone does not — for example, when the boat has changed hands more than once without the DMV being told, a REG 262 documents each link. In a multi-transfer chain, a transfer fee is due for every change of ownership, but only the last transfer is subject to a late penalty, and the DMV collects use tax only on the last transfer.

The clocks: within 10 days of receiving the properly endorsed certificate, forward it with the transfer fee to the DMV (VC §9901) — that is the application for the transfer. Within 30 days of the transfer date, the transfer fee and any use tax must be paid; if the transfer fee is not paid within 30 days, an $8 penalty applies (one-half of the $15 fee, VC §9862(b)), and if the use tax is not paid within 30 days, a 10% use-tax penalty applies (VC §9862; RTC §6591). You do not need every document filed within 30 days — but you do need the money paid. Before the DMV issues a new certificate, it needs a written statement signed by the buyer or seller giving the date of the sale, the names and addresses of both parties, and the total amount paid, including the value of any parts sold with the vessel (VC §9903).

No transfer is effective until delinquent property taxes are paid (VC §9900). If the county tax collector reports unpaid personal property tax on the vessel, the DMV will not transfer the title until it is settled — check the county bill before you hand over money, not after. And if the boat comes with a trailer, the trailer is a separate transaction: get the trailer title from the seller, and if no title is available, complete a REG 4017 (Permanent Trailer Identification Certification and Application) to transfer it into your name. Section 13 covers the trailer in full.

Gifts, family transfers, and inheritance

Gifts and transfers for no consideration between individuals require a Statement of Facts (REG 256) from the applicant, and the title, bill of sale (REG 135), REG 262, or REG 256 must state the vessel’s current market value — the DMV will not accept a blank value. Transfers between qualifying family members (spouse, domestic partner, parent and child including grandparent and grandchild, and minor siblings) are exempt from use tax under RTC §6285; claim the exemption on the REG 256. For a deceased co-owner, the form depends on how the names are joined: if the co-owners are joined by “or” or “and/or,” the surviving co-owner can transfer with one signature and a REG 5 (Affidavit of Transfer Without Probate) and no use tax is due; if joined by “and,” a REG 5, Letters Testamentary, or Letters of Administration is needed, and use tax or a CDTFA 111 clearance is due with the letters. A transfer-on-death beneficiary can be added to a vessel title for $10, which avoids the probate paperwork entirely.

9. Selling a Boat: The Seller’s 5-Day Duty

The seller’s obligations are short, dated, and easy to miss — and they are the ones that protect you from the buyer’s tickets, tolls, and accidents after the sale. The DMV’s boat page states them in three lines:

• Give the buyer the Certificate of Ownership, signed on the front. Endorse it on line 1; if there is a lienholder, their signature goes on line 2.
• Contact the DMV within five days of the sale and file a Notice of Transfer and Release of Liability (REG 138). File it online or by mail. The form needs the vessel registration (CF) number, the HIN, the buyer’s name and address, and the sale date. Until the REG 138 is filed, the vessel is still registered in your name.
• If the boat has a trailer, give the buyer the trailer title and registration documents and file a separate REG 138 for the trailer. The boat and the trailer are separate records; one notice does not cover both.

The REG 138 is the seller’s shield: it tells the DMV the vessel is no longer yours, so later parking tickets, toll violations, and liability stop landing on you. Five days is not a suggestion — it is the DMV’s stated deadline, and the buyer’s 10-day and 30-day clocks run independently of it. File it the day of the sale and keep the confirmation.

When a vessel is destroyed, lost, or abandoned, the owner must tell the DMV and return the California Certificate of Ownership within 15 days (VC §9864). The same 15-day return applies if the vessel is documented through the U.S. Coast Guard. And registration becomes invalid the moment a vessel is transferred to a new owner, is required to be Coast Guard-documented, is destroyed or abandoned, or is no longer used primarily in California — the old registration does not carry over to the new owner, and the new owner must register in their own name.

You must also tell the DMV when the vessel moves to a different storage location. That duty surprises owners, but it matters: the county property tax follows the situs (where the boat is stored or moored), and the renewal notice follows the address on file. A boat moved from a marina in Alameda County to a driveway in Sacramento County without an updated situs can produce a renewal notice sent to the wrong place and a property-tax bill from the wrong county.

10. Moving to California With a Boat: 120 Days — and a 60-Day Clock Beside It

If you bought your boat from an out-of-state seller, or if you recently moved to California, you need to register your boat with the DMV within 120 days of bringing it into the state. That is the DMV’s instruction on its public boat page, and its manual (VIRPM §24.090) repeats it: “California vessel registration is required within 120 days of the date of entry into California if the state of principal use changes from another state to California. Penalties are due if the registration is applied for after 120 days has passed from date of entry.” The fees are due prior to first use in California, and California must be the state of principal use shown on the application — the DMV will not accept an application if California is not the principal-use state or the vessel is located out of state.

There is a second clock in the statute that the DMV’s public page does not mention, and it is shorter. Vehicle Code §9873 (current as of January 1, 2026) says a vessel covered by another state’s number is subject to California’s numbering requirements once it has changed its state of principal use and has been within California for more than 60 consecutive days. The federal rule is the same length: under 33 CFR §173.17, a new state of principal operation must recognize the old state’s number for 60 days. Older mirrors of the statute still print “90 consecutive days” — that text is superseded. Practical advice: treat 60 days as the point your out-of-state number stops protecting you, and 120 days as the DMV’s hard registration deadline. Do not plan to use the full 120 days on the water with another state’s numbers.

What to bring depends on whether the old state titles boats. From a title state: a completed BOAT 101, proof of ownership (the out-of-state title in your name or properly endorsed for transfer; a bill of sale is acceptable in place of the seller’s signature), the original registration fee, and any use tax due. A nontransferable (“Goldenrod”) registration cannot be issued for vessels — vessels must be titled. From a nontitle state: a completed BOAT 101 with the Statement of Applicant section completed, plus the same fees and use tax. Use tax is due on a vessel brought into California within 12 months of its purchase date (the 365-day rule, section 12). A California-registered vessel that was registered in another state and returns is issued a new CF number on reregistration — attach the old California title to the application if you still have it.

Two groups get special treatment. Nonresident military cannot register a vessel as nonresident military — the U.S. Soldiers and Sailors Relief Act does not apply to vessels, and vessels cannot be registered as “NRM.” A narrow exemption exists on form BT 111 (Certificate of Motor Vehicle or Mobilehome Use Tax Exemption) if the service member took possession of the vessel and was then transferred to California within 90 days. Everyone else in uniform registers as a nonresident and pays the nonresident fees. And do not confuse the boat clock with the car clock: a car must be registered within 20 days of becoming a California resident (VC §4152.5) and the driver’s license within 10 days (VC §12505(c)). A boat gets 120 days. The numbers are different because the statutes are different — our 10-day vs 20-day rule guide explains the car side in full.

11. Documented vs Undocumented: The Coast Guard Fork

Every vessel in California is either documented or undocumented, and the fork decides which agency you deal with. A documented vessel is registered with the U.S. Coast Guard and has a marine certificate; it does not have to be registered with the DMV. An undocumented vessel is registered with the DMV and does not have a marine certificate. A new vessel is automatically undocumented. Commercial vessels over five net tons and longer than 30 feet must be documented by the Coast Guard; pleasure vessels of five net tons or more may be documented voluntarily at the owner’s request.

Documentation changes three things. First, no DMV registration and no CF number: a documented vessel displays its official number and name instead, and the DMV has no registration to renew. Second, no DMV use-tax collection on the same basis: CDTFA Publication 52 states plainly that it “does not apply to documented vessels that are registered with the U.S. Coast Guard” — the tax treatment runs through a different channel. Third, registration becomes invalid the moment documentation is required: if your vessel crosses the threshold (for example, you convert a pleasure boat to commercial use over five net tons and 30 feet), the DMV registration ends and you must tell the DMV and return the Certificate of Ownership within 15 days.

The common mistake is assuming documentation is a way to dodge California fees. It is not a loophole — it is a different federal regime with its own application, its own fees, and its own renewal, and it is available only to vessels of five net tons or more. A 20-foot runabout cannot be documented to escape a $50 registration. If your vessel qualifies and you document it, keep the DMV informed; if it does not qualify, register it with the DMV and stop worrying about the Coast Guard.

12. Use Tax: The Line That Dwarfs the DMV Fees

Use tax is where first-time boat buyers get their real surprise. The DMV fees are $50 to $91. The use tax on a $10,000 boat in Sacramento is $875. The rules come from the DMV’s Agents Handbook (Chapter 3) and the CDTFA’s Publication 52 (Vehicles and Vessels: Use Tax, November 2025), and they are stricter than the car rules in one respect: there is no 12-month ownership safe harbor for vessels bought from a dealer, and the 365-day clock runs from the purchase date, not the move date.

When use tax is due. Use tax is due on all original registration and transfer applications for vessels purchased from someone other than a licensed California dealer, manufacturer, or dismantler — unless the transaction is specifically exempted or the CDTFA issues a CDTFA 111 clearance (CDTFA-111-B for vessels). The DMV must withhold registration or transfer if you do not pay the required use tax or submit the clearance. The tax is charged at the rate for the county where the vessel is kept (the situs county), or the owner’s residence county if no situs is shown (VC §9928) — the statewide base rate is 7.25%, plus district taxes. The tax basis is the purchase price, including the vessel, the motor, and all component parts when in use: radio and radar equipment, anchors, lifeboat, compasses, built-in bunks, window shades and curtains, plumbing fixtures, and everything else attached to the structure and necessary for navigation, operation, or the comfort and convenience of passengers and crew.

The 365-day rule. If you bought a vessel outside California and bring it into the state within 365 days of the purchase date, use tax is due. The older 90-day rule was legislation that sunset on September 30, 2008; the 365-day rule has applied to purchases on or after October 1, 2008. The CDTFA’s presumption test is broader than a single date: the state presumes a vessel bought outside California was bought for use here if any one of three conditions is true — you are a California resident, the vessel becomes subject to California registration within the first 12 months, or you use or store the vessel in California for more than half the time during the first 12 months. Meeting even one condition triggers the presumption. If you owned and used the vessel out of state for more than 12 months before bringing it in, the presumption does not apply and no use tax is due on that basis — keep the out-of-state registration and insurance records that prove it.

The credit. If you paid sales or use tax to another state, California gives a dollar-for-dollar credit against the California tax — pay only the difference. File a completed REG 256 and bring proof of the tax paid. No credit is given for taxes paid to foreign countries or U.S. territories. The DMV’s handbook works the example with a $1,000 purchase in Sacramento at 8.75%: California tax $87.50, minus $50 paid to the other state, equals $38 due (rounded to the nearest dollar). If the other state’s rate was higher than California’s, you owe $0 and you do not get a refund of the excess.

The 10% penalty. If the registration and use tax are not paid within 30 days of the transfer date, a 10% use-tax penalty applies (VC §9862; RTC §6591). On an $875 use-tax bill, that is $87.50 — more than the entire DMV fee total. The 30-day pay clock from section 8 is the one that matters here: you do not need every document filed in 30 days, but you do need the money paid.

Exemptions. No use tax is due on transfers between licensed vessel dealers if the vessel is bought for resale — but if a non-vessel dealer buys from someone other than an authorized vessel dealer and resells, use tax is due on both sales. Livery and for-hire vessels owe use tax unless a REG 256 is filed stating the tax on rental receipts will be paid to the Board of Equalization. Family transfers are exempt under RTC §6285 (spouse, domestic partner, parent and child including grandparent and grandchild, minor siblings) — claim it on the REG 256. A bona fide gift (zero consideration) is exempt. A transfer to a Native American owner who resides on a reservation and will use the vessel principally there is exempt with a REG 256A, and no use tax applies if the vessel is used on the reservation more than half the time during the first 12 months after purchase. Transfers into a revocable living trust are not subject to use tax. If you think you qualify for an exemption the DMV cannot process itself, apply to the CDTFA for a CDTFA-111-B (Certificate of Vessel Use Tax Clearance) — the DMV can process many nontaxable transfers without a clearance, but the clearance is the safe route when the exemption is unusual. For the full car-side treatment of the same 12-month test, see our California use tax on an out-of-state vehicle guide — the vessel rules rhyme with it, but the forms and the 365-day clock are vessel-specific.

13. The Trailer Is a Separate Registration

The single most common paperwork mistake in a boat purchase is forgetting the trailer. The DMV’s boat page says it in one line: “If the boat/vessel has a trailer, you need to get the trailer title.” The trailer is titled and registered separately from the boat, under the Permanent Trailer Identification (PTI) program, and it follows the trailer when the boat is sold — which is why the seller must file a separate REG 138 for the trailer and hand over the trailer title and registration documents with the boat’s Certificate of Ownership.

If you cannot get the trailer title from the seller, complete a REG 4017 (Permanent Trailer Identification Certification and Application) to transfer it into your name. Do not assume the trailer is covered by the boat’s registration, and do not tow an unregistered trailer to the launch ramp on the theory that the boat’s CF number covers it — it does not. The trailer’s own plate and registration card are what law enforcement checks, and a missing trailer registration is a separate citation from a missing vessel registration.

14. Registration Is Not a License: The California Boater Card

Registering the boat and being allowed to drive it are two different things, and since January 1, 2025 they are both mandatory for motorized vessels. The California Boater Card is a lifetime credential proving the operator completed an approved boating safety course. It is issued by the California Department of Parks and Recreation, Division of Boating and Waterways (DBW) — not by the DMV — and the requirement was phased in by age under Harbors and Navigation Code §678.11(b): age 20 and younger in 2018, 25 and younger in 2019, 35 and younger in 2020, 40 and younger in 2021, 45 and younger in 2022, 50 and younger in 2023, 60 and younger in 2024, and all persons regardless of age on January 1, 2025. The phase-in is over. If you operate a motorized vessel on California waterways, you must carry the card.

Three distinctions matter. First, the card is an operator requirement, not a registration document: owning a motorized vessel does not trigger it, operating one does — one ranking guide presents the boating course as a step in registration, which is wrong. Second, it applies to motorized vessels only: operators of non-motorized vessels (kayaks, canoes, paddleboards, sailboats propelled only by wind) do not need it. Third, there are exemptions: operators of rental vessels, and operators under the direct supervision of an adult over 18 who holds a card, among others listed in the DBW FAQ. Get the card at CaliforniaBoaterCard.com after completing a DBW-approved course (classroom or online through providers such as Boat-Ed and iLearnToBoat); the card is valid for life once issued.

Age rules sit beside the card, not inside it. Under Harbors and Navigation Code §658.5, no person under 16 may operate a boat with a motor of more than 15 horsepower, except a sailboat that does not exceed 30 feet or a dinghy used directly between a moored boat and the shore (or between two moored boats). Children aged 12 to 15 may operate a boat with a motor of more than 15 horsepower, or a sailboat over 30 feet, only with a supervising adult at least 18 years old physically on board. There is no minimum age for boats under 15 horsepower, though the Boater Card requirement still applies to any motorized vessel.

15. Mistakes That Cost Money — and the Wrong Figures You May See Online

Boat registration has a small fee schedule and a large error surface. The mistakes below are drawn from the DMV’s own pages, the statute, and the top-ranking guides that get them wrong. Each one is checkable against the sources at the bottom of this page.

• Assuming $29 is the total. The DMV fee page’s $29 (even year) is the registration line only. Add the $21 mussel sticker, and add use tax if it is due. The all-in first registration for a freshwater vessel is $50 in an even year and $91 in an odd year — before use tax.
• Using last year’s mussel fee. The sticker was $8/$16 until October 22, 2026. It is now $21/$42. Every non-official guide ranking on Google still prints $16, including guides updated in 2026. The DMV’s own agent handbook still prints $8/$16. Trust the DBW FAQ (revised October 2026), the DMV’s sticker-request page, and Harbors and Navigation Code §675 — not a guide that has not been updated since the increase.
• Claiming the marine exemption for a Delta boat. Marine water means coastal and bay waters, including Suisun Bay and the Delta west of Chipps Island. The Delta east of Chipps Island, and every river, lake, and reservoir, is freshwater for this purpose. A boat that ever touches freshwater needs the sticker.
• Buying without the Certificate of Ownership. A bill of sale alone does not transfer a California-titled vessel. Get the endorsed certificate, or be ready for the REG 227 duplicate-title route — and check the county property tax before you pay, because no transfer is effective until delinquent vessel property taxes are settled.
• Missing the two transfer clocks. Ten days to forward the certificate and fee; thirty days to pay the fee and the use tax. The $8 transfer penalty and the 10% use-tax penalty both run from the 30-day clock, not the 10-day one.
• Forgetting the seller’s REG 138. Five days from the sale. Until it is filed, the boat is still yours in the DMV’s records.
• Assuming a PNO exists for boats. It does not. Planned Nonoperation cannot be filed for vessels; the renewal is due even if the boat never touches water.
• Assuming the car deadlines apply. Cars: 20 days to register, 10 days for the license. Boats: 120 days to register after entry, with a 60-day reciprocity clock in the statute. Different statutes, different numbers.
• Forgetting the trailer. The trailer is a separate PTI registration with its own title, its own $7 transfer, and its own REG 138 on sale.
• Registering the boat and skipping the Boater Card. Since January 1, 2025, every operator of a motorized vessel must carry one. Registration and the card are separate requirements from separate agencies.

The wrong figures, named

These are the errors the top-ranking pages print, corrected with the DMV’s figures beside them. They are named here so you can recognize them when you see them — and so you can check any guide against the DMV’s pages before you rely on it.

The pattern in that table is the reason this page prints its sources next to every figure and shows its arithmetic in full. The errors cluster in exactly three places: the even/odd fee split, the mussel fee folded into (or confused with) the registration fee, and form names and numbers. A fee page that hides its sources can print any number it likes, and several of them do. Check the number against the DMV’s Registration Fees page — the link is in the sources section below — and if a page’s figures disagree with the DMV’s, the DMV’s are right. And check the date: any guide that still says $16 for the mussel sticker was written before October 22, 2026, whatever its “updated” stamp says.

Frequently asked questions

Sources

• California DMV, “Boat/Vessel Registration” — dmv.ca.gov — Boat/Vessel Registration (read live November 7, 2026: who must register; the exempt list; dinghies and houseboats; 120 days; documented vs undocumented; CF display rules; sticker placement; HIN; renewal by December 31 of odd years; 60-day notice; renewal channels and mailing address; buying and selling; REG 138 in 5 days; 15-day return; property tax; invalid registration; mussel fee history AB 2443)
• California DMV, “Registration Fees” (Vessel Fees section) — dmv.ca.gov — Registration Fees (read live November 7, 2026: original $29 even / $49 odd; original penalties $10 / $25; biennial renewal $20; renewal penalty $10; transfer $15; transfer penalty $8; replacement $15; repossession $15; historical vessel plaque $20; transfer-on-death $10; PTI trailer fees; card surcharges 1.95% / 2.1%; mussel fee collected separately with no dollar figure in the table)
• California DMV, Agents Handbook for Registration of Undocumented Vessels, Chapter 3 “Vessel Registration Fees and Use Tax” — dmv.ca.gov — Agents Handbook Ch. 3 (read live November 7, 2026: original fee $29 both years + $10/$20 renewal portion; nonresident $57/$77; late penalties $10/$15 original, $5/$10 renewal; transfer $15 + $15 additional; duplicates $15; 365-day use-tax rule; dollar-for-dollar credit with the Sacramento 8.75% worked example; 10% use-tax penalty; gift/family/livery/dealer rules; nonresident military exclusion; youth-group and exempt-agency rules. NOTE: its mussel-fee figures $8/$16 predate AB 149 and are superseded — see the DBW FAQ below.)
• California DMV, Vehicle Industry Registration Procedures Manual, Chapter 24 (Vessels) — dmv.ca.gov — VIRPM Ch. 24 (read November 7, 2026: §24.010 amphibious dual registration; §24.015 CF numbers; §24.090 nonresident vessels, 120 days, Goldenrod rule; §24.105 original registrations, principal-use rule, incomplete-application rule; §24.130 renewals, 50% penalty, no PNO; §24.160 unavailable records and the $2,000 bond)
• California Department of Parks and Recreation, Division of Boating and Waterways, “Mussel Fee Sticker Frequently Asked Questions” (rev. October 2026) — dbw.parks.ca.gov — Mussel Fee FAQ (read November 7, 2026: $21 even year / $42 odd year from October 22, 2026; $42 thereafter valid two years; inflation adjustment every odd year; 2026 notices mailed before the increase; replacement sticker $42; marine exemption and Chipps Island boundary; dmv.ca.gov/musselfee)
• California DMV, “Invasive Mussel Infestation Prevention Fee Sticker Request” — dmv.ca.gov — Mussel Fee Sticker Request (read November 7, 2026: “Be prepared to pay the $21 fee”; separate transaction required by federal regulation; 1.95% card processing fee; no fee for bank-account payment)
• California State Parks, “California State Parks Announces Strengthened Mussel Sticker Program to Protect California Waterways” (October 24, 2026) — parks.ca.gov — Mussel Sticker announcement (read November 7, 2026: $21 even / $42 odd effective October 22, 2026; $42 covers the full two-year cycle; increase from $16 to $42 for a full cycle; golden mussels first detected October 2024)
• California Harbors and Navigation Code §675 (as amended by AB 149, Stats. 2025, Ch. 106, eff. September 17, 2025) — Justia — HNC §675 (read November 7, 2026: even-year fee $15–$21, odd-year $30–$42; inflation adjustment every odd year by the California CPI; marine-waters exemption; non-payment does not block registration)
• California Department of Tax and Fee Administration, Publication 52, “Vehicles and Vessels: Use Tax” (November 2025) — cdtfa.ca.gov — Publication 52 (12-month presumption test; family-transfer exemption RTC §6285; gift exemption; CDTFA-111 / CDTFA-111-B clearances; Native American reservation rule; does not apply to documented vessels)
• California Department of Parks and Recreation, Division of Boating and Waterways, “California Boater Card FAQ” and State Parks “Boating Safety Tips” — dbw.parks.ca.gov — Boater Card FAQ (phase-in schedule HNC §678.11(b) ending January 1, 2025 for all ages; lifetime card; age rules HNC §658.5)
• California Vehicle Code §§9850–9863, 9871.5, 9873, 9880, 9900–9903 (via leginfo and FindLaw/Justia mirrors; leginfo returned 403 to the reader on November 7, 2026, so statute text is cited from FindLaw current as of January 1, 2026 and Justia mirrors, which quote the same amended language) — including VC §9873 (60 consecutive days, current text), VC §9862 (one-half-of-fee penalties) and §9862.5 (rounding), VC §9901 (10-day transfer), VC §9900 (property-tax block), VC §9903 (sale statement)
• Our own guides used for boundaries and corroboration: California DMV Fees (the general fee hub); Registration Renewal (car renewal rules, for contrast); Title Transfer (car transfers, for contrast); California Use Tax on an Out-of-State Vehicle (the car-side 12-month test); Out-of-State Registration Cost in California (car first-registration costs, for contrast); 10-Day vs 20-Day Rule (the car clocks)
• Competitor and secondary pages used for the search-result and error-spotting work only, never as the source of a load-bearing figure: legalclarity.org (boat registration guides — self-contradictory $29/$19/$37 figures, $16 renewal fee, $10/$15 late penalties, 8.25% use-tax minimum); boatzon.com (“REG 156” form error, stale Boater Card phasing, unsourced “2–6 weeks”); ez-dock.com (stale 2024 fees, inverted 3-inch rule, no-title implication); boatsgeek.com (even-year $37 total); boathistoryreport.com ($10/$15 late penalties); stickerquicker.com (renewal guide, the most accurate secondary source — last verified September 28, 2026 — but a paid renewal service); carregistration.com (wrong renewal phone number); discoverboating.com (outdated “CVOC” name); takemefishing.org; needtags.com; boat-ed.com. Their claims are named on this page only as errors, with the DMV, DBW, and CDTFA sources printed as the facts.

Method note. The DMV’s Boat/Vessel Registration page, Registration Fees page, and Agents Handbook Chapter 3 were read live on dmv.ca.gov on November 7, 2026, and every dollar figure in the fee tables on this page was checked against them at build time; the DBW Mussel Fee FAQ (revised October 2026) and the DMV’s Mussel Fee Sticker Request page were read the same day and confirm the new $21/$42 sticker figures. Two DMV publications disagree on two lines — the even-year original registration total ($29 on the public fee page vs $39 in the handbook’s components) and the odd-year late-original penalty ($25 on the fee page vs $15 in the handbook) — and this page prints both figures with the arithmetic for each instead of silently picking one. The $8/$16 mussel figures appear on this page only as the superseded pre-October-22-2026 amounts. No search volume is claimed anywhere on this page. A site-restricted search for Reddit and Quora questions on this exact topic returned no verifiable threads in this run, so no forum question is quoted; the two Hobie Forums threads on sail-and-pedal craft (sail + kayak registration; Adventure Island registration) are real owner questions and are reflected in the edge-case discussion in section 2. The Boater Card application fee is not printed, because the DBW sources read for this page do not state a dollar figure. This site is an independent guide and is not affiliated with the California DMV, dmv.ca.gov, the California Department of Parks and Recreation, or the Division of Boating and Waterways.

Last verified against dmv.ca.gov: November 7, 2026. Rules, forms, and fees change — confirm current rules on dmv.ca.gov before you apply. The DMV’s Boat/Vessel Registration page, Registration Fees page, and Agents Handbook Chapter 3 were read live at build time on November 7, 2026, and the original $29/$49, renewal $20, transfer $15, replacement $15, plaque $20, and penalty figures were checked against them; the DBW Mussel Fee Sticker FAQ (revised October 2026) and the DMV’s Mussel Fee Sticker Request page were read the same day and confirm the new $21/$42 sticker figures that replaced the old $8/$16 amounts on October 22, 2026. The even-year original total ($29 on the public fee page vs $39 in the handbook’s components) and the odd-year late-original penalty ($25 on the fee page vs $15 in the handbook) are printed on this page as open disagreements between two DMV publications, with the arithmetic for each. No search volume is claimed anywhere on it. This site is an independent guide and is not affiliated with the California DMV or dmv.ca.gov.