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Boat Loan Calculator
Work out your monthly boat payment, total interest, and how much you save by paying extra each month. Works for powerboats, sailboats, yachts and PWC. Includes trade-in, sales tax and fees - everything runs in your browser.
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Estimated monthly payment
Amount financed$0
Total interest$0
Total of all payments$0
Paid off in-
Interest saved with extra payment$0
Paid off sooner by-
Estimate only. Your actual rate depends on your credit, the lender, the age and type of boat, and your state. Taxes and fees vary by state.
Same loan, different terms
Lenders quote you a payment. This is what each term actually costs on your numbers. Marine lenders often quote a longer term at a lower rate — it still costs more. Set your own rate per term if you were quoted different ones.
| Term | Rate | Monthly payment | Total interest | vs your term |
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Uses your amount financed. Change a rate to match a specific quote.
Amortization schedule
| Month | Payment | Principal | Interest | Balance |
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Your logo stays on this device. It is never uploaded anywhere — it is only drawn onto your printout.
Updated September 2026
A boat loan payment comes down to four numbers: the amount financed, the APR, the term, and any extra you pay monthly. Marine loans in the United States commonly run 10 to 20 years on larger boats and 3 to 7 years on small boats and personal watercraft, with 10–20% down expected.
The term costs more than most buyers realize. On a $45,000 boat loan at 9% APR, stretching from 10 years to 20 years drops the payment by $165 a month but adds $28,765 in interest. Enter your own numbers above and compare the total interest line.
Typical loan terms by boat type
Marine lenders price a $12,000 jet ski and a $400,000 yacht on completely different sheets. These are the ranges commonly seen in the U.S. market — a starting point for the calculator, not a quote.
| Boat type | Typical price | Common term | Down payment |
|---|---|---|---|
| Personal watercraft (jet ski) | $8k – $20k | 3 – 7 years | 10 – 20% |
| Aluminum fishing boat | $15k – $45k | 5 – 12 years | 10 – 20% |
| Pontoon boat | $25k – $80k | 10 – 15 years | 10 – 20% |
| Center console / bowrider | $40k – $150k | 10 – 20 years | 10 – 20% |
| Cruising sailboat | $50k – $250k | 10 – 20 years | 15 – 25% |
| Motor yacht | $150k – $1M+ | 15 – 20 years | 15 – 25% |
Loans under roughly $25,000 are often written as personal loans rather than secured marine paper, which is why small boats and PWC carry shorter terms and higher rates per dollar borrowed. Boats above about $100,000 usually go through a specialized marine lender and require a professional survey.
How boat loans actually work
A boat loan is an installment loan, like a car loan, but with terms that stretch much longer — 10, 15 and even 20 years on larger boats. Marine lenders write them this way because boats are expensive and buyers shop by monthly payment. That long term is exactly what makes a boat look affordable on paper and what quietly makes it expensive in total. The calculator above shows both numbers at once: the payment the dealer will quote you, and the total interest that payment implies.
The term is the biggest lever you control
Stretching the same balance from 10 years to 20 years cuts the monthly payment by roughly a third — and more than doubles the interest. Here is a $45,000 boat loan at 9% APR at four different terms:
| Term | Monthly payment | Total interest | Total paid |
|---|---|---|---|
| 5 years | $934 | $11,048 | $56,048 |
| 10 years | $570 | $23,405 | $68,405 |
| 15 years | $456 | $37,156 | $82,156 |
| 20 years | $405 | $52,170 | $97,170 |
The 20-year loan looks like the affordable one at $405 a month. It costs $41,122 more than the 5-year loan — almost the price of the boat again. Pick the shortest term whose payment you can genuinely carry through winter storage bills and insurance renewals, not just in the month you sign.
Monthly payment by loan amount
What different boat loans cost per month at 9% APR over 15 years:
| Amount financed | Monthly payment | Total interest |
|---|---|---|
| $15,000 | $152 | $12,385 |
| $30,000 | $304 | $24,770 |
| $50,000 | $507 | $41,284 |
| $75,000 | $761 | $61,926 |
| $100,000 | $1,014 | $82,568 |
Boat loan rates: what to expect
“Is this rate normal?” is the question every boat buyer asks and almost nobody answers straight. Rates move with the market, but the spread between credit tiers is stable and useful:
| Credit score | Typical boat loan APR |
|---|---|
| 800 and above | around 7% – 7.5% |
| 740 – 799 | around 7.5% – 8.5% |
| 670 – 739 | around 8.5% – 10% |
| Below 670 | 10% – 18%, larger down payment required |
Two things move you off your tier. A boat over ten years old typically adds a quarter point to a full point; past twenty years, many lenders stop entirely. And loans under about $25,000 are often written as unsecured personal loans, which price higher per dollar than secured marine paper. Buyers with identical credit routinely get quotes three or four points apart from different lenders on the same boat — always get a second quote, and try a credit union alongside the dealer's lender.
Used boats: the survey and the wholesale-value rule
Two things surprise used-boat buyers. First, most lenders will require a marine survey by a certified surveyor on boats over roughly ten years old or above about $100,000 — you pay for it up front, typically $500 to $1,500, and the lender can still decline afterwards. Second, lenders lend against wholesale book value, not the asking price: a common rule is up to about 120% of the wholesale value. If a boat books at $30,000 wholesale and you agree to pay $45,000, the lender may cap the loan near $36,000 and expect the remaining $9,000 in cash. Check the book value before you agree on a price, not after.
Sailboats, yachts and PWC finance the same way
The math in this calculator applies to any hull: center consoles, pontoons, sailboats, cruisers, and personal watercraft like jet skis. What changes is the lender's appetite. Larger yachts (typically $100,000 and up) go through specialized marine lenders, usually require a professional survey, and can reach 20-year terms. Sailboats are financed like powerboats of the same value, though older sailboats face the same used-boat caution. PWC loans run shorter — usually 3 to 7 years — because the asset depreciates fast.
The term you can get depends on how much you borrow
Buyers routinely calculate a 20-year payment on a $35,000 boat and then find no lender will write it. Marine lenders tier maximum terms by loan size, and the tiers are fairly consistent across the industry:
| Amount financed | Maximum term usually available |
|---|---|
| Under $25,000 | 4 – 7 years |
| $25,000 – $49,999 | 10 – 12 years |
| $50,000 – $99,999 | 15 years |
| $100,000 and above | 20 years |
A second rule caps the term from the other direction: many lenders require the boat's age plus the loan term to stay under about 20 to 25 years. A 10-year-old boat under a 20-year ceiling maxes out at a 10-year loan, no matter how much you are borrowing. Check both limits before you fall in love with a monthly payment.
Why the dealer's payment is higher than the calculator
You run the numbers at home, then the finance office quotes something noticeably higher. The calculator is not wrong — it is being asked about a different loan. What gets financed is the price plus everything below:
| Added to the amount financed | Typical amount |
|---|---|
| Sales tax | 0 – 8% of price, by state (some states cap boat tax) |
| Freight, rigging and prep | $1,000 – $5,000 |
| Documentation / admin fee | $250 – $500 |
| Titling and registration | $100 – $500 |
| Marine survey (used, often required) | $500 – $1,500, usually paid up front |
| Extended warranty (optional) | $2,000 – $8,000 |
| GAP coverage (optional) | $200 – $900 |
That is why this calculator keeps sales tax and fees & title as separate fields: put the real out-the-door figures in and the payment matches the finance office. If it still does not, ask for the amount financed in writing. That one number explains every gap.
Sales tax, registration and dealer fees
Most states charge sales tax on boat purchases, applied to the price — in many states after subtracting your trade-in, which is how this calculator treats it. Some states cap the tax on boats; a few charge none. On a $45,000 boat a 6% tax is $2,700, enough to move your payment. Registration, titling and documentation fees typically get rolled into the loan too, so both fields are above to keep your estimate close to the dealer's worksheet.
A trade-in works like a down payment
Trading in your current boat reduces the balance you finance, and in trade-in-credit states it reduces the taxable amount as well. Combined with a cash down payment of 10–20% — which most marine lenders expect — it protects you from owing more than the boat is worth while it depreciates fastest in the first few seasons.
Extra payments: the cheapest money you will ever save
Long terms make small extra payments powerful. Every extra dollar goes straight to principal, erasing all the future interest that dollar would have generated across 15 or 20 years. Put $100 in the extra-payment field and look at the two green lines: thousands of dollars saved and a year or more off the loan is typical. Check that your loan has no prepayment penalty first — most boat loans do not.
One warning that costs people real money: tell your lender in writing that any extra goes to principal. Several large lenders default to treating anything above the scheduled payment as paying ahead — it is credited to next month's payment rather than reducing the balance. Borrowers report sending an extra $100 a month for a year, then finding the balance barely moved and their due date pushed out instead. After your first extra payment, check that the principal balance dropped by that amount. If only the due date moved, call and have it reapplied.
A boat can qualify as a second home
Under U.S. tax rules, a boat with sleeping berths, a galley and a head can qualify as a second home, which may make the loan interest deductible when the loan is secured by the boat. Limits and rules change, so treat this as a question for your tax professional, not a promise from a calculator.
Budget past the payment
The loan is only part of the cost of owning a boat. Insurance, fuel, slip or storage, winterization and maintenance commonly add 10–20% of the boat's value per year. If the monthly payment from the calculator only just fits your budget, the boat does not fit your budget yet — either a larger down payment, a cheaper boat, or another season of saving will fix that better than a longer term will.
Frequently asked questions
Why is the dealer's monthly payment higher than this calculator's?
Because the dealer is financing more than the price. Sales tax, freight and rigging, doc fees, titling, any extended warranty or GAP all get added to the amount financed. Enter your state tax rate and the real fees in the fields above and the numbers line up. Ask the finance office for the amount financed in writing — that one figure explains every gap.
How old can a boat be and still qualify for financing?
Most lenders finance boats up to about 20 years old, and many apply an “age at maturity” rule: the boat's age plus the loan term must stay under roughly 20 to 25 years. Boats over ten years old usually need a marine survey, and past about 25 years financing becomes case-by-case or unavailable.
How long a term can I get on a boat loan?
It depends on how much you borrow. Under $25,000 is typically 4 to 7 years; $25,000 to $50,000 is 10 to 12 years; $50,000 to $100,000 reaches 15 years; and $100,000 and up can reach 20 years. The boat's age can cap it further.
What is the monthly payment on a $50,000 boat loan?
About $507 a month at 9% APR over 15 years, with roughly $41,284 in total interest. The same loan over 10 years is about $633 a month and around $26,000 in interest — $126 more per month, but $15,000 less in interest.
Does this work for pontoons, jet skis and fishing boats?
Yes. The amortization math is identical for every vessel — pontoons, center consoles, aluminum fishing boats, sailboats, yachts and personal watercraft. What changes is the typical price, term and down payment; see the table above for the usual ranges by type.
How is the monthly boat payment calculated?
With the standard amortization formula: the amount financed, the monthly interest rate (APR divided by 12) and the number of months. Each payment covers that month's interest first, and the remainder reduces the balance.
What credit score do I need for a boat loan?
Most marine lenders want around 680 or higher for their advertised rates, with the best pricing near 750. Below that, approval is still possible but rates and down payment requirements climb quickly.
How long can a boat loan be?
Typically 10 to 15 years, and up to 20 years on larger new boats and yachts. Small boats and personal watercraft usually run 3 to 7 years.
How much down payment does a boat loan need?
Usually 10 to 20 percent. Larger or older boats, and buyers with thinner credit, are often asked for more. A bigger down payment also protects you from owing more than the boat is worth as it depreciates.
Can I finance a used boat?
Yes. Used boats are financed every day, but expect a slightly higher rate, a shorter maximum term, and — over a certain age or value — a marine survey before the lender commits.
Does this calculator work for yachts and sailboats?
Yes. The amortization math is identical for any vessel. For yachts, note that specialized lenders may quote different rates and require a survey, but the payment formula does not change.
Does this calculator store my numbers?
No. Everything is calculated in your browser and nothing is sent anywhere or saved.