Boat Loan Calculator
Estimate the monthly payment on a boat loan. Enter the loan amount, annual interest rate, and term to see your monthly payment, total interest, and total cost over the life of the loan.
Formula
M = P × r × (1 + r)^n / ((1 + r)^n − 1), where r = monthly rate and n = number of months
- This uses the standard amortizing loan formula, where each fixed monthly payment covers interest plus part of the principal.
- The monthly rate r is the annual rate divided by 12; n is the term in years times 12.
- Total interest is the sum of all payments minus the original loan amount.
- Boat loans often run 10–20 years; a longer term lowers the monthly payment but raises total interest.
- Enter the amount you actually borrow — subtract any down payment or trade-in first.
$50,000 at 7.5% over 10 years
Inputs
- Loan Amount: 50000
- Annual Interest Rate (%): 7.5
- Loan Term (years): 10
A $50,000 loan at 7.5% for 10 years (120 payments) costs about $593.51 per month, roughly $21,221 in total interest.
Frequently asked questions
How is a boat loan payment calculated?
It uses the amortizing loan formula, spreading principal and interest evenly across fixed monthly payments over the term.
Does a longer term lower my payment?
Yes, but it increases the total interest you pay. A shorter term means higher payments but less interest overall.
Should I include a down payment?
Enter only the amount you finance. Subtract any down payment or trade-in value from the boat price first.
Are boat loan rates higher than car loans?
Often slightly, because boats are seen as discretionary purchases. Rates depend on credit, term, and whether the loan is secured.
Does this include taxes and fees?
No. It covers principal and interest only. Insurance, registration, and dealer fees are extra.