How does a boat loan differ from a car loan?
The engine underneath is the same: fixed rate, level payments, a lien that lifts at zero. What changes is everything around it. Terms run out to 20 years on premium hulls. Rates sit one to three points above comparable car loans. Down payments start at 10 percent and the good pricing starts at 20. The paperwork is heavier too, since a marine lender wants the boat's specifications, a purchase agreement, a survey on anything used, and an insurance binder before money moves.
That document list is worth assembling early. A seller with a clean boat in June usually has other buyers, and the difference between closing in four days and stalling for three weeks is often just whether the survey and insurance quote were lined up in advance.
How fast does a boat lose value?
Gentler than a car, but steadily. Expect 10 to 15 percent gone the first year and another 5 to 10 percent annually for several years after, with the curve flattening near the ten-year mark. From there, well-kept fiberglass holds value surprisingly well, because the hull itself lasts decades. What ages is the machinery: engines, electronics, and canvas drive resale far more than hull years, which is why a repowered 15-year-old center console can outsell a neglected 8-year-old one.
For loan purposes, assume the boat will be worth meaningfully less than you paid within five years, then set the down payment and term so the balance stays under that number. The alternative is discovering at trade-in time that you owe more than the broker can get for it.
What does trading up while underwater cost?
Boat owners upgrade often, and the numbers deserve daylight before the paperwork. Say you owe $32,000 on a boat a broker can move at $27,000, and you want a $65,000 replacement with $10,000 down. The $5,000 shortfall has to go somewhere, and the path of least resistance is into the new loan. Financing $60,000 instead of $55,000 at 8.25 percent over 15 years raises the payment from about $534 to $582 and the total interest from roughly $41,044 to $44,775. That is $3,731 in extra interest to carry debt from a boat you no longer own, and the new loan starts $5,000 underwater on day one.
The alternatives are unglamorous but cheaper: run the current boat another season or two while the loan catches up with its value, or cover the gap in cash and let the new loan start clean.
What does a 20-year term cost on a bigger hull?
Larger boats unlock longer terms, and the maximum term is where the interest piles up. Take a $120,000 cruiser with 20 percent down, leaving $96,000 financed at 7.5 percent. Over 10 years the payment is about $1,140 and the interest totals roughly $40,744. At 15 years the payment eases to $890 while interest climbs to $64,188. Stretch to the full 20 and the payment falls to $773, but interest reaches $89,609, within sight of the loan amount itself. The step from 15 to 20 years buys $117 a month of relief and charges $25,421 for it.
Bigger hulls change the paperwork along with the term sheet. Vessels measuring at least five net tons, which covers most boats from the mid-30-foot range up, can be federally documented through the Coast Guard's National Vessel Documentation Center, and lenders on six-figure loans usually insist on it. Instead of a state title lien, the lender records a preferred ship mortgage against the documented vessel, which strengthens its claim and adds a few hundred dollars plus a couple of weeks to closing. Ask early whether your lender requires documentation, because starting that process late is a reliable way to lose a summer delivery date.
Should you let the dealer arrange the loan?
Dealers place loans through marine lending partners, and handling the boat and financing in one sitting is genuinely convenient. The convenience has a price, since the dealer can pad the partner's rate by half a point to two points and keep the difference. The fix is to arrive with your own approval. Credit unions with marine programs often undercut banks by 0.5 to 1.5 points, and federally insured ones can be checked through NCUA. Online marine lenders offer pre-qualifications that leave no mark on your credit.
With an outside offer in hand, the dealer's finance desk becomes useful again: let them make the last bid, and take it only if it beats what you brought.
What sinks a boat budget?
Usually the spending that happens after the loan closes, plus a few skipped precautions before it. Dockage leads the list, anywhere from $200 a month at an inland lake to $2,000 or more at a coastal marina. Insurance, which the lender requires anyway, runs about 1 to 3 percent of the boat's value per year, and an agreed-value policy beats an actual-cash-value one because it pays a fixed sum instead of a depreciated market estimate. Bottom paint costs $1,500 to $4,000 every year or two for boats kept in the water, and engine service runs $500 to $2,000 a season.
On the purchase side, the classic errors are skipping the survey to save $600 on a used hull, financing to the maximum term without checking the interest total, and shopping in April when demand peaks. Fall and winter buyers face softer prices and more flexible sellers in most regions, and the boat does not care which month you bought it.