Boat Loan Calculator
Estimate your monthly boat payment, the total interest you’ll pay, and a full amortization schedule. Subtract your down payment and any trade-in from the price to get the amount financed.
How to use it
Enter the amount financed — the boat’s price minus your down payment and trade-in — along with the APR your lender quoted and the term. The calculator returns your fixed monthly payment, the total interest over the life of the loan, and a month-by-month schedule you can download.
Boat (marine) loans often have longer terms than car loans — 10 to 20 years is common for bigger vessels — which keeps the monthly payment manageable but raises total interest. A bigger down payment or a shorter term both cut the interest you pay. Add an extra monthly payment to see how quickly you can own the boat outright.
Frequently asked questions
What loan amount should I enter?
The boat’s out-the-door price minus your cash down payment and any trade-in credit. Include taxes/registration only if you’re financing them.
Why are boat loan terms so long?
Because the amounts can be large, lenders offer 10–20 year terms to keep payments affordable. Longer terms mean lower payments but more total interest — compare terms above.
How do I pay less interest?
A larger down payment, a shorter term, or a lower rate all help. An extra monthly payment also shortens the loan and cuts interest — try it in the calculator.
BriskToolbox provides estimates for general information only and is not financial advice.