The true cost of a boat
The dealer quotes a price and a monthly payment. This adds the tax, interest, upkeep, insurance and storage, takes off what the boat would sell for at the end, and sets the result against renting one for the days you would really go out. The starting figures describe one ordinary boat. Replace them with yours.
The true cost of a boat
Over 10 years, out 20 days a year
$122,720
- Purchase price
- $50,000
- Sales tax and registration
- $3,000
- Loan interest
- $20,188
- Maintenance and repairs
- $28,660
- Insurance
- $8,598
- Storage or slip
- $34,392
- Resale value
- −$22,117
- Cost per day on the water
- $614
- Renting for the same days
- $103,175
Renting for the same days costs $19,545 less.
Put that difference into investments earning 7% as you go, and after 10 years you would have $43,819.
Year by year
The running total of everything paid out, owning against renting. The owning line drops in the final year, when the boat is sold.
Show the figures for every year
| Year | Owning, this year | Renting, this year | Owning, total so far | Renting, total so far |
|---|---|---|---|---|
| 1 | $23,019 | $9,000 | $23,019 | $9,000 |
| 2 | $12,706 | $9,270 | $35,725 | $18,270 |
| 3 | $12,899 | $9,548 | $48,625 | $27,818 |
| 4 | $13,098 | $9,835 | $61,723 | $37,653 |
| 5 | $13,303 | $10,130 | $75,026 | $47,782 |
| 6 | $13,514 | $10,433 | $88,541 | $58,216 |
| 7 | $13,732 | $10,746 | $102,272 | $68,962 |
| 8 | $13,956 | $11,069 | $116,228 | $80,031 |
| 9 | $14,186 | $11,401 | $130,414 | $91,432 |
| 10 | -$7,694 | $11,743 | $122,720 | $103,175 |
How this is worked out
What owning costs
- The purchase. Sales tax and registration, your down payment, then every loan payment. Interest is worked out monthly on the remaining balance. If you sell before the loan ends, the rest of the loan is paid off in your last year.
- The yearly bills. Maintenance and insurance, each as a share of the purchase price, plus storage. All three rise by the yearly increase you set.
- Resale. The boat loses the first-year share of its value, then the yearly share after that. What is left at the end is taken off the total.
What renting costs
The price of a day’s rental today, times the days you would really go out, rising each year by the rental increase you set. Fuel is left out of both sides: owners buy their own, and most rentals charge for what you use.
What “invested” means
Each year, the calculator takes the gap between what owning costs and what renting costs, and treats it as money you could have put into investments instead. It grows at the return you set. In years when renting costs more than owning, the gap is taken back out. The figure in the verdict is what that pot would hold at the end.
What is not counted
- Fuel, launch fees, safety gear, electronics and other upgrades.
- A tow vehicle, if the boat needs a bigger one than you have.
- Broker commission or other costs of selling.
- Tax on investment gains, and inflation. All figures are in the dollars of the year they are paid.
- Things with no price: on one side, a boat that is ready whenever the weather is, set up the way you like it; on the other, no winterizing, no repairs and no boat sitting unused in a busy year.
When a boat does come out ahead
The days on the water decide it. Owning costs roughly the same whether you go out five days or fifty, while renting is paid by the day. On the starting figures, owning wins from about 26 days a year. A used boat that has already lost its first-year value, cheap storage at home on a trailer, and doing your own maintenance all pull that number down.
Where the starting figures come from
Boats differ too much for a national average to mean anything, so the starting figures describe one ordinary case: a new $50,000 boat, kept 10 years and used 20 days a year. They are our assumptions unless a source is named below.
The loan rate is the average boat-loan APR reported by LendingTree for the second quarter of 2026, 8.34%. It ranged from 7.3% for excellent credit to 10.2% for fair credit.
The usual rule of thumb for maintenance is 10% of the purchase price a year. The calculator starts at5%, which is kinder to the boat and closer to a new one under warranty. Older boats, and boats kept in salt water, cost more.
Rental prices vary widely by place and boat. The rental marketplace Boatsetter puts a day at $200 to $1,200. The calculator starts at$450; look up what a comparable boat rents for where you would go.
Insurance, storage, depreciation, the yearly increases and the investment return are assumptions. Get a real insurance quote and a storage price, and check what boats like yours sell for at five and ten years old.