Boat Loan Calculator
Budget a boat like a lender would. Enter the price, down payment, trade-in, rate, and term, add sales tax and fees — financed or paid at the dock — and get your monthly payment, cash due at signing, and the all-in cost of the boat.
Loan breakdown
How your rate compares
Your rate vs. the auto-loan market (boat loans usually price higher)
⛵ Boat and recreational-vehicle financing — compare lenders
Compare ratesHow boat financing works
A boat loan is structured like an auto loan — fixed rate, fixed monthly payment, the boat as collateral — but with longer terms (often 10–20 years) and slightly higher rates, because boats depreciate, sit idle for months, and make riskier collateral. Lenders usually want 10–20% down, and your amount financed is the price minus down payment and trade-in, plus tax and fees if you choose to roll them in.
The long terms are seductive: stretching the example loan to 15 years drops the payment but adds thousands in interest on an asset that is losing value the whole time. Compare the total-cost line, not just the payment.
How it’s calculated
Sales tax = tax rate × (price − trade-in), the treatment most states use. Amount financed = price − down − trade-in (+ tax and fees if financed). Payment = P × r ÷ (1 − (1 + r)−n) with r = rate ÷ 12 and n = months. Cash due at signing = down payment plus any tax and fees paid upfront. Total cost = price + interest + tax + fees.
Assumes a fixed-rate, fully amortizing loan. State tax rules (trade-in credits, vessel tax caps) and lender fees vary; insurance, storage, and maintenance are not included. Estimates only — not financial advice.
Worked example
A $40,000 boat with $8,000 down at 8.5% for 10 years finances $32,000 and costs $396.75 a month. With 6% sales tax ($2,400) and $1,500 of fees paid at the dock, cash due at signing is $11,900, loan interest totals $15,611, and the all-in cost of the boat reaches $59,511. Roll the tax and fees into the loan instead and the payment jumps to about $445 with roughly $1,900 more interest. At the 7.52% average 60-month new-car rate the same loan would run $380.18 — boat money costs a little more than car money.
Common mistakes
- Shopping the payment instead of the rate and term — a 15-year term hides a lot of interest.
- Forgetting sales tax and registration when budgeting the cash needed at signing.
- Financing tax, fees, and electronics into a loan that already exceeds the boat’s resale value.
- Skipping the running costs — insurance, slip, winterization, and maintenance often run 10–20% of the boat’s value per year.
Where it is used
- Setting a realistic budget before visiting dealers or boat shows.
- Comparing dealer financing against a credit-union or marine-lender quote.
- Weighing new versus used — and what an extra $10,000 of price does to the payment.
- Deciding whether to pay tax and fees in cash or finance them.
Frequently asked questions
Are boat loan rates higher than car loan rates?
Usually, yes. Boats are luxury collateral that depreciates and can disappear over the horizon, and terms run 10–20 years, so lenders price them above comparable auto loans — often 1 to 2 points over the 60-month new-car average (about 7.5% in early 2026) for strong credit, and more for older boats or thin credit files.
How much should I put down on a boat?
Marine lenders typically want 10–20% down; 20% on the $40,000 example is $8,000. A bigger down payment lowers the payment and protects you from owing more than the boat is worth as it depreciates — boats lose value fastest in their early years.
Is boat sales tax charged on the full price?
Most states charge sales or use tax on the purchase price, commonly 4–8%, and many reduce the taxable amount by a trade-in. Several states cap the tax on vessels, and rules differ for private sales and out-of-state registrations, so check your state before budgeting.
Should I finance the tax and fees into the loan?
Rolling the $3,900 of tax and fees into the example loan raises the payment from $396.75 to about $445 and adds roughly $1,900 of interest over 10 years. It preserves cash but means financing items that add no resale value — pay them upfront if you comfortably can.
What does a boat cost beyond the loan?
Plan for insurance, storage or slip fees, maintenance, winterization, fuel, and gear. A common rule of thumb is roughly 10–20% of the boat’s value per year in running costs — often thousands of dollars annually on a mid-size boat, separate from the payment.