How boat financing works
A boat loan is usually a fixed-rate installment loan, secured by the boat itself. You pay the same amount each month until the balance reaches zero. The amount you finance is the price plus sales tax, minus your down payment and trade-in.
Example
A $45,000 boat with 6% sales tax and $4,500 down means financing $43,200. At 8.5% APR for 15 years, the payment is about $425 a month, and total interest comes to about $33,400. Shortening the term to 10 years raises the payment but cuts the interest by more than a third.
Tips before you sign
- Get pre-approved by a bank, credit union or marine lender before visiting a dealer, so you can compare offers.
- Check the total cost, not just the monthly payment. Long terms can mean paying for a boat long after you have sold it.
- Ask about prepayment penalties. Use the extra payment box to see how much faster you could pay it off.
- Budget for ownership costs like insurance, storage and maintenance alongside the loan.
Buying a camper instead? Try the RV loan calculator. For a car or truck, use the car loan calculator.
Last reviewed October 2026.
Frequently asked questions
How long can you finance a boat?
Boat loans commonly run from 5 to 20 years. Smaller or used boats usually get shorter terms, while lenders often allow 15 to 20 years on larger new boats. A longer term lowers the payment but costs much more interest.
How much down payment do I need for a boat?
Many marine lenders ask for 10% to 20% down. A bigger down payment can help you get a better rate and keeps you from owing more than the boat is worth, since boats lose value quickly in the first few years.
Do I pay sales tax on a boat?
Most US states charge sales or use tax on boats, though rates and caps vary and some states cap the tax on expensive boats. Enter your state's rate to include it in the amount financed, or set it to 0 if you will pay it in cash.
Are boat loan rates higher than car loans?
Usually slightly, because boats are a discretionary purchase and lose value. Your credit score, the boat's age, the loan size and the term all affect the rate you are offered.
What other costs come with owning a boat?
Budget for insurance, registration, storage or slip fees, fuel, winterizing, maintenance and a trailer if needed. A common rule of thumb is 10% of the boat's value per year for upkeep, although it varies widely.