The Real Costs of Owning a Boat: What the Listing Price Doesn’t Tell You

Buying a boat means budgeting for far more than the listing price. Between sales tax, outfitting, insurance, a slip, and ongoing maintenance, the total cost of owning a boat can easily run well beyond what you paid for it — and several of these costs hit before you ever leave the dock.

Here are the costs that catch most buyers off guard.

One-Time Costs at Purchase

These hit when you close the deal. Some apply to every purchase; others depend on whether you’re buying new, buying used from a dealer, or buying used from a private seller.

Sales Tax

Sales tax on boats varies by state, county, and even municipality. If you’re buying from a dealer — new or used — sales tax is typically collected at closing unless you’ll be taking the boat to a different state. If you’re buying from a private seller or changing states, you’ll pay it when you register the boat.

In Florida, the rate is 7.5% but the state caps boat sales tax at $18,000. On a $300,000 boat, that’s still $18,000 due. Other states have no cap. Research your state’s rules before you get attached to a specific boat — timing and location of registration can sometimes make a real difference.

Survey (Used Boats from Private Sellers)

If you’re buying a used boat from a private seller, plan on a pre-purchase survey. Lenders will require one, most insurance companies will require one, and even if they didn’t, you’d want one. A hull survey currently runs $25–$35 per foot depending on the surveyor and location. For a 38-foot boat, that’s $950–$1,330 for the hull survey alone.

Add a haul-out so the surveyor can inspect the bottom (roughly $14–$20 per foot), and you’re looking at $1,500–$2,100 before the engine survey (roughly $500 per engine), rigging survey, and oil analysis — all of which are extra and worth having. Budget $2,500–$3,500 for a thorough used-boat survey package on a 38-footer.

Outfitting: The Gear the Listing Price Doesn’t Include

Outfitting surprises a lot of buyers, including people buying brand-new boats. The listing price covers the boat. It does not cover what you need to actually use it safely.

On a used boat, some gear may come with the boat, but condition matters as much as presence. A 15-year-old EPIRB, expired flares, a life raft past its service date, or an inflatable PFD that is disintegrating are liabilities, not assets. Plan to check and likely replace much of what you find.

On a new boat, you may be starting from scratch on all of it.

Either way, budget for:

• Life raft
• EPIRB
• Offshore inflatable PFDs and tethers for each crew member
• Jacklines
• Dinghy and outboard
• Charts and current chartplotter cartography
• Handheld VHF radio (backup)
• Flares and signaling equipment
• Fire extinguishers to current standards
• Foul weather gear for each crew member
• First aid kit stocked for offshore use
• Anchor and ground tackle appropriate for where you’ll cruise

A conservative budget for outfitting a cruising boat runs $10,000–$30,000 or more, depending on what’s already aboard and what condition it’s in.

Upgrades to the Boat

Beyond safety gear, most boats need work before they’re ready for extended cruising. A used boat that’s been sitting at the dock may need solar, more battery capacity, a watermaker, better ground tackle, and a full inventory of spare parts. Many people will add Starlink internet. A new boat may have systems sized for coastal daysailing that aren’t adequate for living aboard or offshore passages.

Years ago, when Dave suggested we look at moving from our Gemini catamaran to a larger boat, I ran the numbers. The purchase price was a stretch but possible. Then I went through the systems work list — more solar, a larger battery bank, watermaker, new ground tackle, spares — and the number climbed to $20,000 before we’d touched sails or rigging. That was the end of that conversation.

Spare Parts

New boats come with zero spare parts. Used boats often come with very few. Either way, building a proper spares inventory — engine parts, filters, impellers, hoses, electrical supplies, rigging components, outboard parts — takes real money.

Our inventory on Barefoot Gal was worth $5,000–$7,000; several cruising friends estimated $7,000–$10,000 for theirs. When we bought Barefoot Gal, we knew she had almost no spares aboard. Even as experienced cruisers, we underestimated what it would take to build the stock up.

Read more about budgeting for spare parts.

Travel Costs to View and Move the Boat

If the right boat isn’t local — and often it isn’t — add flights, hotels, and meals to view it. If you buy it, add delivery costs to bring it home. These costs can easily run $2,000–$5,000 and are almost never factored into the purchase decision.

Registration and Documentation

State registration fees vary widely. Florida charges $133/year for a 40–65 foot boat. California’s base fee is very low, though county fees may add to it. Value-based states like Indiana and South Carolina calculate fees as a percentage of original MSRP, which can mean several hundred dollars per year for a newer, higher-value boat. Check your specific state — fees and renewal periods vary considerably.

Many cruisers choose USCG documentation over state title because it’s recognized in foreign ports and simplifies customs entry. It’s not required even for international cruising — state title works fine. USCG documentation renewal runs about $26 per year.

Annual Costs of Owning a Boat

These come back every year. They are what determine whether you can actually afford to keep the boat.

Insurance

Budget at least 5% of the boat’s value per year for hull coverage in hurricane-prone areas — and plan for it to increase. On a $300,000 boat, that’s $15,000 per year, with a substantial deductible. Not once. Every year.

Insurance for cruising boats has gotten harder and more expensive in recent years. Boats over 20 years old face limited options. Boats worth under $100,000 have fewer choices. Many companies won’t insure full-time liveaboards. Hurricane-season restrictions are tightening — you may not have coverage during a named storm unless your boat is in an approved location.

Read more about boat insurance pitfalls and what to research before you buy.

Slip, Mooring, or Anchorage Fees

This is the cost many buyers forget entirely, and it’s one of the largest recurring expenses.

Marina slip fees for a 40–45-foot boat vary dramatically by location. Here are approximate annual rates:

• South Florida (Miami, Fort Lauderdale): $12,000–$25,000+
• Southern California (San Diego, Newport Beach): $12,000–$20,000+
• Annapolis and Chesapeake Bay: $5,000–$8,000
• Pacific Northwest (Seattle area): $4,000–$8,000
• Smaller coastal towns and Gulf Coast: $3,000–$6,000

These are annual contract rates. Transient or month-to-month rates run considerably higher. Liveaboards typically pay a surcharge on top of the base slip rate — often 25–50% more. Many marinas in hurricane country require all boats to leave during named storms, which means you need a plan and potentially an additional storage cost built in.

You can significantly reduce this cost by keeping your boat on a mooring field or anchoring out where permitted. Mooring fields typically run $100–$400 per month depending on location, and many cruisers anchor out for free much of the time. But waitlists at desirable mooring fields can be years long, and if you’re tied to a marina for any reason, the annual cost is real.

Bottom Cleaning and Bottom Paint

Any boat that stays in the water needs the bottom maintained. In warm southern waters, growth is fast and aggressive, which means two separate expenses.

Monthly diver cleanings in warm water run $3–$4 per foot, often more with a tip. For a 40-foot boat that’s $120–$160 per month, or $1,500–$2,000 per year — just to keep the bottom clean between paint jobs.

Bottom paint and haul-out every one to two years adds up quickly. For a 38-foot boat, figure $2,000–$4,000 when you add haul-out, block, pressure wash, prep, two coats of antifouling paint, and relaunch. Catamarans cost more because fewer yards can handle their beam.

In colder northern waters you may get by without monthly cleanings and do an annual haul-and-paint. In Florida, the Bahamas, or anywhere warm, budget for both.

Read more about what to ask before hauling out.

Annual Maintenance

Boats require constant attention: engine service, rigging inspection, sail repairs, electrical work, plumbing, zincs, safety equipment recertification, and the steady stream of small fixes that come with any boat that actually gets used.

Many sources quote annual maintenance as a fixed percentage of the boat’s value, but as I’ve written in my article on how much it costs to cruise, I don’t think that holds up in practice. A higher-value boat doesn’t necessarily cost more to maintain than a lower-value one with older systems and deferred work. What drives your maintenance costs is the condition and complexity of your systems, how much you cruise, whether you do your own work, and whether you’re in places where parts and labor are available.

Any new gear comes on top of this.

Spare Parts Replenishment

Parts get used and worn, systems fail, and your spares need to be continuously replenished as you go. Budget for ongoing parts costs as a real line item, not just the initial inventory.

Tow Insurance

A single uninsured tow can run $200–$500 per hour or more. BoatUS or Sea Tow membership runs about $215 per year and covers unlimited towing. This is one of the easiest decisions in boating.

If You’re Already Cruising and Thinking About Switching Boats

If you already have a boat and are considering moving to a larger or better-equipped one, there’s one more cost category worth thinking through carefully.

Moving to a different boat almost always takes longer and costs more than expected. Between selling your current boat, taking delivery of the new one, doing the outfitting and systems work to make it cruise-ready, and shaking down unfamiliar gear, you may lose an entire cruising season or more. The time expense is every bit as real as the dollars.

Running Your Own Numbers

Every boat and every situation is different. Use these categories to build your own estimate for the specific boat you’re considering.

One-time at purchase:

• Sales tax
• Survey (used boats from private sellers)
• Outfitting and safety gear — new or used
• Boat systems work and upgrades
• Spare parts inventory
• Travel to view and move the boat
• Registration and title transfer fees

Annual ongoing:

• Insurance
• Slip, mooring, or anchorage fees
• Monthly bottom cleaning (warm water)
• Bottom paint and haul-out (every 1–2 years, amortized)
• Annual maintenance
• Spare parts replenishment
• Tow insurance
• Registration renewal

Add those up before you sign. You want the full picture before you commit.

I’ve cruised 17 years through the Sea of Cortez, the Bahamas, and the Florida Keys. It was worth every dollar. But going in with open eyes — knowing what ownership actually costs before you sign — is what makes the difference between a boat you can genuinely afford and one that owns you.

---

Ready to Plan the Full Picture?

If you’re working through whether cruising makes financial sense for you, may I suggest two courses that address this head-on?

From Dreamer to Cruiser walks through the full planning process: defining what you want from cruising, understanding the real costs, building skills in the right order, and creating a realistic timeline.

Cruise Farther, Spend Less gets into the nuts and bolts of keeping costs under control once you’re out there: choosing boats that won’t break the bank to maintain, cutting fuel and dockage costs, managing repairs underway, and planning routes that stretch your budget.

If both sound useful — and for anyone in the planning stage, they likely are — the All-Access Pass includes both courses plus all 9 others for $199. That’s less than one gallon of bottom paint. from buying a boat — far from it — but I do want to discourage you from buying a boat you can’t afford.  

Some links in this article (including all Amazon links) are affiliate links, meaning that we earn from qualifying purchases.