Maintenance alone, done by professionals, costs between €700 and €1,800 a year for a 5-7 m outboard boat, €2,700 to €6,000 for a 10-12 m sailing yacht and €8,000 to €20,000 for a 13-16 m motor yacht. On top of that come the berth and insurance, which on many boats cost as much as the maintenance itself, or more.
These figures are guide ranges in euros with VAT included, based on boatyard tariffs, workshop prices and real owner cases published between 2024 and 2026, mostly from Mediterranean Europe, with Atlantic France and the UK for comparison. In other regions, and between ports on the same coast, prices can vary widely.
Annual boat maintenance cost in 2026: summary
The table above shows typical annual spending by boat type and length. It covers the yearly haul-out with antifouling, the engine service, anodes, safety gear, cleaning and a reserve for wear and small breakdowns. It does not include the berth, insurance, fuel or depreciation.
How to read it:
- The low end is for boats in good condition, with simple equipment and an owner who does some of the work.
- The high end is for boats over 15-20 years old, with a lot of kit, in expensive marinas or with everything outsourced.
- Motorboats cost more than sailing yachts of the same length: more horsepower, often twin engines, a generator and air conditioning.
As a reference, a published case of a 1990 10 m sailing yacht bought for €16,000 adds up to about €9,050 a year. About €4,000 of that is berth and port dues, €700 antifouling, €500 engine, €2,000 parts and replacements, €200 insurance and the rest fuel, anchoring fees and inspection. On a French owners' forum for 10-13 m sailing yachts, maintenance without berth or insurance ranges from €1,000-1,300 a year for those who do everything themselves to €4,000-6,000 for those who outsource, with one-off years above €11,000.
The 6-10% of value rule: why it falls short
The classic rule says a boat costs 6 to 10% of its value every year. Other versions apply 10% to all costs, berth included, or work it out as 5-10% of the new boat price. The problem is that almost no maintenance cost depends on what the boat is worth:
- Haul-out, antifouling and berthing are charged per metre of length, not by price.
- Servicing a 30 hp diesel costs the same on a €15,000 yacht as on a €90,000 one.
- Age drives maintenance up while pushing value down. A 30-year-old boat can cost 20-30% of its value every year. A new one under warranty stays at 2-5%.
- For large crewed yachts, industry analyses agree that 10% is too low.
In the case above, 10% of €16,000 would be €1,600, but antifouling, engine and parts alone add up to €3,200, or 20% of the value. The other way round, a new 12 m sailing yacht worth €250,000 "should" cost €25,000 a year under the rule, when its real maintenance is around €4,000-7,000, plus berth and insurance.
A more reliable approach is to budget per metre of length: about €250-450 per metre per year for a cruising sailing yacht and €350-900 per metre for a motorboat, adjusted for age and equipment.
What annual maintenance includes: item by item
Haul-out, antifouling and anodes
This is the biggest fixed item. For a 10 m boat, a haul-out with antifouling done by a yard costs €900 to €2,300 with VAT. You'll find more detail in our antifouling price guide. Sacrificial anodes for the shaft, propeller, drive or heat exchanger cost €15 to €40 each and are replaced every year.
Engine service
- Inboard diesel up to 50 hp: €300-800 with oil, filters, impeller, belt and gearbox oil. Separately, a professional oil change is around €200-280 and an impeller €150-240 with labour.
- Outboard: €150-450 a year for small and mid-size engines. In the UK, one workshop publishes full services from £109 to £256 plus VAT and parts, depending on horsepower.
- Twin-engine motorboat with sterndrives: €1,500-4,000 a year, with drive bellows every few years.
Rigging, sails and ropes (sailing yachts)
A rigging inspection costs €150 to €300. Replacing the standing rigging on a 10 m yacht costs €2,000 to €5,000 every 10-15 years. A new set of sails starts at around €3,000. Add €200-600 a year for ropes and deck hardware. The sensible approach is to set aside €400 to €800 a year for these renewals.
Safety gear
Flares expire, auto-inflating lifejackets need servicing, fire extinguishers need checking and the liferaft goes to an approved service station every one to three years, depending on the model. Spread over time, allow €100-400 a year for a cruising boat.
Electrics, electronics and cleaning
House batteries are replaced every 4-6 years (€150-400 on a 10 m sailing yacht). Add bilge pumps, lights, the odd instrument that fails and cleaning the boat, and you have another €200 to €600 a year.
Contingency
A water pump, a starter motor, a leaking seacock. Keep 15-20% on top of the total for breakdowns. Mechanical or GRP labour costs between €38 and €67 an hour in the yards we checked.
Separately: berth and insurance
An annual berth for a 10 m boat ranges from about €1,500 in a modest public port to more than €8,000 in a luxury marina, plus dues. Insurance for a 10 m sailing yacht ranges from about €120-250 for third party to €300-900 fully comprehensive, depending on the insured value and cruising area.
Factors that change the annual cost
Length and boat type
Length multiplies almost every item. Motorboats add horsepower and systems: a generator or air conditioning each add €300-800 a year in servicing. Catamarans have two hulls to paint and often two engines.
Age and condition
A boat over 20 years old has hoses, wiring, rigging and upholstery at the end of their useful life. The first years after buying a used boat are usually the most expensive.
Use and cruising area
A boat that runs 300 hours a year spends more on engine and sails. One that sits idle fouls faster and suffers more damp. In the Mediterranean, antifouling works harder than in cold water and the sun punishes gelcoat, teak and fabrics.
Marina, workshop and country
Labour in a luxury marina can cost twice as much as in a public yard. Countries differ a lot too: the Côte d'Azur sits at the top end, while some ports in Croatia, Greece or Turkey sit at the bottom.
Worked example: an 18-year-old 10 m sailing yacht
A 10 m cruising yacht built in 2008, with a 30 hp diesel, worth about €45,000 and berthed in a Mediterranean marina. Maintenance done by professionals, VAT included:
- Haul-out, wash, antifouling and days on the hard: €1,200 – 2,000
- Annual engine, gearbox and impeller service: €350 – 700
- Shaft, propeller and engine anodes: €60 – 150
- Diver hull clean mid-season: €100 – 250
- Safety gear, spread over time (liferaft, flares, extinguishers): €100 – 250
- Ropes, hardware and consumables: €200 – 500
- Reserve for sails and rigging: €400 – 800
- Batteries and electrics, spread over time: €100 – 300
- Total maintenance: €2,510 – 4,950
- Fully comprehensive insurance: €300 – 600
- Annual berth with dues: €2,500 – 5,000
- Total annual cost: €5,310 – 10,550
Maintenance alone comes to 5.6-11% of the boat's value. With berth and insurance, 12-23%. The 10% rule gets maintenance right by coincidence and falls short on the total cost.
DIY or hire a professional
Labour makes up between a third and half of annual maintenance. That's why many owners do part of it themselves.
What a handy owner can do:
- Oil and filter changes, impeller and anodes.
- Antifouling on a sound bottom, if the yard allows it.
- Cleaning, waxing, checking ropes and greasing winches.
Better left to professionals:
- 230 V electrics, chargers and lithium installations.
- Standing rigging, GRP repairs and osmosis.
- Engines under warranty: doing the service yourself can cause problems if you later need to make a claim.
- Official inspections and liferaft servicing.
How to save without cutting corners
- Group jobs into a single haul-out so you pay for the crane and yard days once.
- Follow the manufacturer's schedule and don't wait for things to fail: a breakdown at sea costs far more.
- Buy filters, oil and anodes ahead of time and compare prices.
- Haul out in autumn or winter, when yards have space and offer discounts.
- Put aside a fixed amount each month for the big renewals: sails, rigging, batteries.
- Keep a maintenance log with dates and engine hours. It saves on diagnostics and helps when you sell.
- If the boat hardly moves, consider a dry stack: less antifouling and often a cheaper berth.
How to choose a maintenance professional
Ask for itemised quotes: estimated hours, hourly rate, parts with brand and part number, and what happens if something unexpected turns up. A fixed annual maintenance plan with one workshop can work out cheaper than paying for one-off jobs.
Questions worth asking:
- Are you an authorised dealer for my engine brand? Does the work keep the warranty valid?
- What exactly does the annual service include and what is extra?
- Will you call me before doing work that wasn't in the quote?
- Will I get a report with photos of the boat's condition?
Red flags: lump-sum quotes with no parts detail, workshops that won't issue an invoice or show you the old parts, and hourly rates far below the local going rate.
On Nautify you can find marine maintenance workshops in Barcelona or boat repair services in Alicante, among other areas, and ask them for a quote. For the full picture of costs, depreciation included, read our article on the real cost of boat ownership.
Conclusion
A boat's annual maintenance depends more on its length, age and equipment than on what it cost. For a 10 m sailing yacht, budget €2,500 to €5,000 a year for professional maintenance, plus berth and insurance. Budget item by item, set aside a reserve for the big renewals and don't rely on the 10% rule as your only yardstick. If you need someone to do the work, Nautify has maintenance and repair workshops in your area to compare.
