Boat Loan Calculator
Determine your boat loan payment based on your purchase price or find out how much you can buy based on your monthly payment.
How the boat loan calculator works
It works like an auto loan: sales tax (after any trade-in) and fees are added to the boat price, your down payment and trade equity are subtracted, and the financed balance is amortized over your term.
Worked example: with boat price of $45,000, monthly payment of $810 and cash down payment of $5,000, the boat loan calculator shows estimated monthly payment of $670.21.
- Boat price
- $45,000
- Amount financed
- $43,000
- Sales tax
- $2,700
- Total interest
- $13,297
| Boat price | Estimated monthly payment |
|---|---|
| $22,500 | $298.48 |
| $45,000 | $670.21 |
| $67,500 | $1,041.94 |
| $90,000 | $1,413.67 |
The formula
Financed = price + tax + fees − down − trade equity. Payment = financed × r ÷ (1 − (1 + r)⁻ⁿ).
Results are estimates for educational purposes and are not financial advice. Confirm exact figures with your lender, plan administrator or advisor.
Questions about the boat loan calculator
How long are boat loan terms?
They can run much longer than car loans — often 10 to 20 years on larger vessels — which lowers the payment but raises total interest considerably.
Do boat loans require a down payment?
Lenders commonly ask for 10–20% down. A larger down payment reduces the financed amount and the interest you pay, as the calculator shows.
Is boat-loan interest tax-deductible?
If the boat has sleeping, cooking and toilet facilities it may qualify as a second home, making the interest potentially deductible. Confirm with a tax advisor.
Is the Boat Loan Calculator free to use?
Yes. Every calculator on FinCalculators is completely free, with no sign-up, login or paywall. You can run as many scenarios as you like.