Most states require liability coverage if your boat has a motor above 10–50 horsepower, and virtually every boat mortgage requires full coverage until you pay off the loan. Even when it’s not mandatory, one uninsured boater hitting you can cost more than a decade of premiums—and roughly 25–35% of recreational boats operate without insurance.
Here’s what coverage you actually need, what it costs by boat type, and the pieces most buyers miss.
Do I need boat insurance?
Legal requirements vary by state, but the pattern is consistent:
- Motorized boats above a threshold (typically 10–50 HP depending on your state) trigger minimum liability requirements. Check your state insurance commissioner’s website for your specific mandate.
- Financed boats nearly always require comprehensive and collision coverage in the loan agreement—lenders won’t let you carry liability-only.
- Non-motorized boats (canoes, kayaks, small sailboats) usually have no legal mandate, though liability coverage is cheap and prudent if you boat in high-traffic areas.
Bottom line: If it has a motor and you didn’t pay cash, you need insurance. If you paid cash but boat where other people boat, you still want it.
Core coverage types
Here’s what a standard boat insurance policy includes—and what each piece actually does.
Liability
Pays for injury or property damage you cause to someone else. You hit another boat, you injure a swimmer, you damage a dock—liability covers it.
Typical state minimums: $25,000–$300,000 depending on jurisdiction, but those minimums are usually too low if you own assets. A serious injury claim can run six figures; underinsuring invites a lawsuit that reaches your house and savings.
What I recommend: Match your liability limit to your net worth, or at minimum carry $100,000–$300,000. The jump from $50,000 to $100,000 liability typically costs roughly $40–$80/year.
Collision
Covers damage to your boat when you hit something—another boat, a rock, a dock, the bottom.
Deductible: Typically $250–$1,000. Raising your deductible from $250 to $500 usually saves 8–12% on your premium; $1,000 deductibles save 12–18%.
Comprehensive
Covers theft, vandalism, fire, weather damage, and anything that isn’t a collision. Most insurers bundle this with collision; you rarely buy one without the other.
Medical Payments (MedPay)
Pays medical bills for you and your passengers regardless of who caused the accident. Typical limits run $1,000–$5,000 per person.
Trade-off: This overlaps with your health insurance. If you and your passengers already have strong health coverage, MedPay is optional padding. If you regularly take out uninsured friends or family, it’s often worth the $30–$60/year add-on.
Uninsured and Underinsured Boater Coverage
This is the piece most buyers skip—and shouldn’t. See the dedicated section below.
Towing and On-Water Assistance
Emergency towing and on-water labor if your boat breaks down. Typically runs $25–$50/year as an add-on.
When it’s worth it: If you boat more than a few miles from port or in areas with sparse marine assistance, this pays for itself the first time your engine quits. If you boat a small lake with a nearby ramp, skip it.
What boat insurance costs
Premium ranges as of 2024–2025, based on Insurance Information Institute data and carrier rate filings:
| Boat type & size | Liability only | Full coverage (liability + collision + comp) |
|---|---|---|
| Small motorboat (20–25 ft) | $300–$500/year | $600–$1,200/year |
| Mid-size cruiser (30–40 ft) | $600–$1,000/year | $1,500–$3,000/year |
| High-value cruiser (40–60 ft) | $1,500–$3,000+/year | $3,500–$8,000+/year |
| Jet ski / PWC | $400–$800/year | $700–$1,500/year |
What moves your rate:
- Boat age and value: Older boats cost less to insure; high-value boats attract theft and total-loss claims.
- Engine size: Twin engines or high horsepower = higher premiums.
- Your claims history: One at-fault accident typically raises your rate 15–30% for three years.
- Operator age: First-time boaters and operators under 25 pay 10–30% surcharges.
- Location: Saltwater and high-traffic boating areas cost more than inland lakes.
- Deductible: Raising from $250 to $1,000 drops premium roughly 12–18%.
One note: loyalty discounts are rare in marine insurance. Shop your policy every year—I’ve seen the same boat quoted $800 by one carrier and $1,400 by another.
Uninsured and underinsured boater coverage
This is where most buyers leave money—and protection—on the table.
What it covers
You or a passenger gets injured by another boater who:
- Has no insurance (estimates suggest 25–35% of recreational boats operate uninsured, per BoatUS data),
- Has insurance but insufficient coverage to pay your damages, or
- Flees the scene (hit-and-run on the water).
Your uninsured boater coverage then pays your medical bills, lost income, and pain-and-suffering up to your policy limit.
How much you need
Match or exceed your own liability limit. If you carry $100,000 in liability, set uninsured/underinsured boater coverage to $100,000 as well. This is reciprocal coverage—it protects you the same way your liability protects others.
If you have substantial assets or boat in high-traffic areas (coastal waters, popular lakes), consider $300,000+.
State requirements
- No-fault states (Michigan, Florida, and a few others): Uninsured boater coverage is mandatory by state law.
- Tort states (most others): It’s optional, but many insurers include it as default unless you actively decline it.
Cost: Uninsured/underinsured boater coverage adds roughly $50–$200/year depending on your limits. In twelve years of writing policies, I never saw a client regret carrying it—but I saw several regret skipping it after an uninsured hit-and-run.
Verify your state’s rules at the National Association of Insurance Commissioners state database.
Jet ski and personal watercraft specifics
Jet skis (personal watercraft, or PWC) cost more to insure than similarly valued boats because the accident and injury rate is higher. Here’s what changes:
Separate policy or endorsement: Many carriers require a standalone PWC policy rather than adding your jet ski to a boat policy. Some allow an endorsement, but underwriting is stricter.
Premium surcharge: Expect to pay 20–50% more for a jet ski than a boat of similar value. A $12,000 jet ski often costs $700–$1,500/year for full coverage, while a $12,000 small motorboat runs $600–$1,200.
Age and certification restrictions: Most insurers require the primary operator to be 18 or older. Some require a state-issued boater safety certificate. Operators under 25 face additional surcharges (10–20%).
Homeowners and boat policy exclusions: Standard homeowners policies almost always exclude PWC coverage, and many boat policies explicitly exclude them as well. Always verify before assuming you’re covered.
Off-season discounts: If you store your jet ski for winter, ask your insurer about lay-up or seasonal suspension. This can cut your premium by 20–40% during the off months, but it’s not automatic—you have to request it.
Coverage gaps and exclusions you should know
Your homeowners policy does not cover your boat
I get this question constantly. Homeowners and renters policies typically exclude boats entirely, or cover only very small dinghies (under 10 feet, no motor). If you want your boat protected, you need a separate marine policy.
For more on how homeowners insurance actually works, see homeowners insurance what it covers.
Financing requires full coverage
If you have a boat loan, your lender’s contract almost certainly requires comprehensive and collision coverage until the loan is paid off. Liability-only won’t satisfy the mortgage, so expect higher premiums if you finance.
Commercial use and rentals void coverage
Standard recreational boat policies exclude commercial use. If you rent your boat out, operate it as a charter, or use it for business purposes, your insurer will deny the claim. You need a commercial marine policy.
Racing and speed trials are excluded
Organized racing, speed trials, and competitive events void coverage on most policies. If you race, ask your insurer about a racing endorsement—it exists, but you have to request it.
Towing passengers (water-skiing, tubing) may need an endorsement
Some policies exclude liability for injuries to people you’re towing behind the boat. If you water-ski or tube regularly, confirm your policy covers towing liability or add a specific towing endorsement.
Actual cash value vs. agreed value
Most boat policies pay actual cash value—the depreciated value of your boat at the time of the loss, not what you paid for it. If you own a newer or high-value boat, ask for an agreed value endorsement, which locks in a specific payout amount. This costs slightly more but eliminates depreciation arguments after a total loss.
When you need coverage vs. when it’s required
You are legally required to carry boat insurance if:
- Your state mandates minimum liability for motorized boats above a horsepower threshold, or
- You financed your boat and the lender requires comprehensive and collision.
You should carry boat insurance even if it’s not required if:
- You boat in high-traffic areas where collisions are plausible,
- You don’t have enough savings to replace your boat out-of-pocket after a theft or total loss, or
- You’d be financially exposed if an uninsured boater hit you and you had no uninsured boater coverage.
The cost of skipping insurance is absorbing the full loss yourself—and hoping the other person is insured and at fault. That’s a bad bet when 25–35% of boats operate uninsured.
FAQ
Does boat insurance cover hurricanes and storms?
Yes, under the comprehensive portion of your policy. However, some insurers exclude named storms (hurricanes) or require special windstorm endorsements in coastal areas. Read your policy and confirm before hurricane season.
Can I insure a boat I don’t own?
Generally no—you must have an insurable interest (ownership or a lien). If you’re borrowing someone else’s boat regularly, ask them to add you as a named insured on their policy.
What happens if I let someone else drive my boat?
Most policies cover permissive use—someone you allow to operate your boat is covered under your liability, as long as they’re operating it with your permission and not excluded by name. Verify your policy’s permissive-use language, and confirm the operator meets any age or certification requirements.
Do I need boat insurance if I only use my boat a few times a year?
Legal requirements don’t change based on how often you boat. If your state mandates coverage or your lender requires it, you need it year-round. If it’s optional and you boat rarely, liability-only coverage is cheap enough ($300–$500/year for a small boat) that it’s worth carrying to avoid the risk of an uninsured claim.
If you’re shopping for boat or jet ski coverage, get quotes from at least three carriers—the spread can be 40% or more for identical coverage. Make sure your uninsured boater limit matches your liability limit, confirm your policy covers personal watercraft if you own a jet ski, and read the exclusions before you sign.
For a deeper look at how boat insurance structures work and what each coverage type costs, see boat insurance structures and costs.
This is not insurance or financial advice. Consult your state’s insurance commissioner and your insurance agent to confirm coverage options and legal requirements for your specific boat and location.