How long can you finance a boat? Published terms up to 20 years

Most boat lenders we checked publish a longest term of 180 or 240 months, which is 15 or 20 years. The long end is reserved for bigger loans on newer boats. Navy Federal needs at least $30,000 financed to go past 84 months, and Truist keeps its 240-month term for a separate marine loan on boats over 30 feet.

Published maximum terms, lender by lender

Every row below comes from the lender’s own page, read on October 24, 2026. Follow the link before you rely on any of it; these pages change.

Lender	Longest term published	What it is tied to
Navy Federal Credit Union	180 months	$25,000 minimum financed for 61 to 84 months; $30,000 minimum for anything over 84 months
Truist secured boat loan	Up to 180 months	“Based on a combination of loan amount and collateral age.” $3,500 to $150,000, boats under 30 feet
Truist marine loan	Up to 240 months	Typical terms 120 to 240 months. $75,000 to $2 million, boats over 30 feet valued over $150,000
M&T Bank	240 months	Boat loans from $2,000
DuPage Credit Union	180 months	$20,000 minimum for 84 to 120 months, $30,000 for 180; boats from 2019 and older top out at 60 months
Trident Funding (broker)	20 years typical	Does not arrange loans with terms under 10 years
Southeast Financial	240 months	Loans from $10,000 to $4,000,000

Nobody on this list publishes a term past 20 years. Trident is the odd one out in the other direction: it sets a floor as well as a ceiling, and won’t place a loan shorter than 10 years.

The full set of published terms, with rates and eligibility, is on the lender terms page.

Why loan size sets the term

Look at the minimums. Navy Federal won’t stretch a loan past 84 months unless at least $30,000 is financed. DuPage asks for $20,000 to go to 84 to 120 months and $30,000 for 180. Truist splits its products by size: the secured boat loan stops at $150,000 and 180 months, and the marine loan starts at $75,000 and runs to 240.

For a buyer in the $100,000 to $3 million range, the minimums rarely bind. The size rules that matter are the upper limits. Truist’s marine loan caps at $2 million. DuPage stops at $180,000. If your loan is above a lender’s maximum, its term table doesn’t apply to you at all.

Why the boat’s age sets the term

A 20-year loan on a boat that’s already 15 years old ends when the boat is 35. Lenders handle that with model-year limits, and those limits shrink the term you can get on an older boat.

• Truist’s secured loan takes boats 10 model years old or newer; its marine loan, up to 15 prior model years.
• DuPage sets rates by model year and limits boats from 2019 and older to 60 months.
• Trident says eligible boats “generally need to be 20 years old or younger,” and its rate page notes that 2006 to 2015 model years “are subject to a rate increase.”

If you’re shopping used, check the model-year rule before you check the rate. The used boat loans guide lays these out side by side.

Worked example: $400,000 over 10 years versus 20

This is an example, not a quote. Assumptions:

• Purchase price $500,000, down payment $100,000, so $400,000 financed
• APR 8.00%, assumed for both terms (the calculator’s placeholder, not a typical or offered rate)
• Fixed rate, fully paid off over the term, no balloon
• Tax, fees and insurance left out

The monthly rate is 8.00% ÷ 12 = 0.6667%. The payment formula is P × r ÷ (1 − (1 + r)^−n), where P is the loan, r the monthly rate and n the number of payments.

	10 years (120 payments)	20 years (240 payments)
Monthly payment	$4,853.10	$3,345.76
Total of payments	$582,372.45	$802,982.47
Interest paid	$182,372.45	$402,982.47

The 20-year term cuts the payment by $1,507.34 a month and costs $220,610.02 more in interest if you keep the loan to the end.

The second number to look at is the balance partway through. On the 20-year loan, after 10 years of payments you’d still owe $275,762.52. If you sell or trade the boat at that point, that’s what has to come out of the sale proceeds.

The example also flatters the long term, because it uses one rate for both. Lenders’ rate tables usually charge more for longer terms. Navy Federal’s table, stamped “Rates as of Oct 24, 2026,” listed new-boat APRs from 6.95% for terms up to 36 months to 8.95% for 37 to 180 months, for borrowers with excellent credit. DuPage’s page (no date shown, read October 24, 2026) listed 5.75% APR at 36 months up to 8.09% at 180 months for its newest model-year tier.

You can rerun this with your own numbers in the calculator. Set the term and “payments figured over” to the same number of years to get a loan with no balloon.

Long term, paid early

Truist and DuPage both say on their pages that they charge no prepayment penalty. With a lender like that, a long term works as a low required payment, and you can pay ahead when you want to. Ask any lender you’re considering whether it charges a prepayment penalty, and get the answer in the loan documents, not just on the phone.

If you’re thinking about a shorter term with payments figured over a longer one, read the balloon loans guide first. It’s a different trade. The payment drops, but a large balance comes due at the end.

How much you put down also moves the term you can get; see down payment and credit. When you know the price, term and boat, compare what lenders put in writing. Questions first? Send us your numbers.