β΅ Boat Loan Calculator
Monthly payment for marine loans with down payment and 5 to 20 year terms.
Monthly Payment
Estimates for planning only, not financial advice.
How to Use This Calculator
This calculator estimates the monthly payment on a boat or marine loan, with the long terms (up to 20 years) that are normal in boat financing. Enter the boat price, your down payment, the APR, and the term to see the payment, total interest, and a yearly schedule.
Enter the Boat Price and your Down Payment. Use the %/$ toggle to enter it either way; 10 to 20 percent is standard, and 20 percent gets the best rates.
Enter the APR and pick the Term. Marine loans commonly run 10 to 20 years for new boats; used boats often get shorter terms and higher rates.
Compare terms. A 20-year term has the lowest payment but the most interest; run both 10 and 15 years to see how much the longer term really costs.
Use the CSV download for the yearly schedule, which shows how slowly the balance drops in the early years of a long marine loan.
The Boat Loan Payment Formula
Boat loans amortize exactly like mortgages: fixed monthly payments, interest charged on the remaining balance first, the rest reducing principal. What makes marine loans special is the term length. On a 20-year loan, the first several years of payments are almost entirely interest, so the balance barely moves while the boat keeps depreciating. That is why a larger down payment matters more for boats than for cars: it keeps the loan balance below the boat\'s market value from day one.
Worked Example
$60,000 boat, 20 percent down ($12,000), 7 percent APR, 15-year term (180 months). Loan amount = $48,000. Monthly rate = 0.07 / 12 = 0.005833. Payment = 48000 x 0.005833 x (1.005833)^180 / ((1.005833)^180 - 1) = $431.44 per month. Total paid = $431.44 x 180 = $77,659, so total interest = $29,659. That interest is more than half the price of the boat itself. Stretch the same loan to 20 years and the payment falls to about $372 a month, but total interest climbs to roughly $41,300.
Smart Boat Financing Moves
Shop the loan before the boat. Marine lenders, banks, and especially credit unions compete on rate, and dealer-arranged financing often carries a markup, so get a pre-approval from at least two lenders. Consider a term shorter than the maximum you qualify for: the payment is higher, but you build equity in the boat faster and pay far less interest. And run the whole ownership budget, not just the loan: slip or storage fees, insurance, fuel, winterization, and maintenance commonly total around 10 percent of the boat\'s value per year, which can dwarf the loan payment on an older boat.
If you are buying used, confirm the lender will finance the boat\'s age and type; many set limits like 15 years old or a minimum loan of $25,000. A marine survey is often required for used boats and protects you from buying hidden damage. Estimates for planning only, not financial advice.
Frequently Asked Questions
How long are boat loan terms?
New boat loans commonly run 10 to 20 years, much longer than car loans, because boats cost more and depreciate differently. Lenders often require a minimum loan amount, sometimes $25,000 or more, to offer a 15 or 20 year term on a used boat. Stretching the term lowers the payment but raises total interest a lot, so compare a 10-year and 15-year term in this calculator before you sign.
How much down payment does a boat need?
Most marine lenders want 10 to 20 percent down, with 20 percent getting you the best rates and avoiding the underwater trap of owing more than the boat is worth. Used boats often require a bigger down payment than new ones because they depreciate faster. This calculator accepts a down payment in dollars or percent.
Are boat loan rates higher than car loan rates?
Usually yes, by about 1 to 3 percentage points. Boats are luxury items that depreciate quickly, so lenders charge for the extra risk, and marine loans are less competitive than the huge auto-loan market. Rates in the 6 to 9 percent range are typical for buyers with good credit as of recent years, and credit unions often beat dealer financing.
Should I finance a boat or pay cash?
It depends on what the cash would do elsewhere and how long you will keep the boat. Financing a depreciating asset means you can owe more than it is worth for the first few years, especially with a small down payment and a 20-year term. A bigger down payment and a shorter term keep you above water on the balance, which matters when you eventually sell or trade up.
What other costs should I budget besides the payment?
The loan payment is only part of boat ownership. Budget for marina slip fees or storage, insurance, fuel, winterization, and maintenance, which typically run about 10 percent of the boat's value per year. A $60,000 boat can easily cost $6,000 a year to keep, so test the full ownership budget, not just the monthly payment, before you commit.