Boat Loan Calculator

Calculate monthly boat loan payments for 10-20 year terms with total interest and cost breakdown.

By Konstantin Iakovlev · Updated April 2026 · Source: CFPB — Consumer Tools

$
$
%
Loan Term

Monthly Payment

$359.53

Total Interest

$24,715.64

Total Cost

$74,715.64

Loan-to-Value

80.0%

Loan Summary

Boat Price$50,000.00
Down Payment$10,000.00
Loan Amount$40,000.00
Interest Rate7.00%
Term15 years (180 payments)
Monthly Payment$359.53
Total Interest Paid$24,715.64
Total Cost$74,715.64

Use the Boat Loan Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.

Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.

How It Works

Financing a boat comes down to three numbers: the monthly payment, the total interest, and what the vessel ultimately costs once the loan is paid off. Having those in hand before signing is what lets you weigh one loan scenario against another and confirm the boat actually fits your finances, which carries extra weight with average boat loan interest rates projected near 7 to 9% in 2026.

Behind the result is the standard amortization formula: M = P [ i(1 + i)^n ] / [ (1 + i)^n - 1]. In it, 'M' is the monthly payment, 'P' the principal you borrow, 'i' the monthly interest rate found by dividing the annual rate by 12, and 'n' the total number of payments, which is the term in years times 12. Subtracting the principal from everything you pay across the full term yields the total interest.

Read these as estimates rather than firm offers, since your credit score, your lender, and the specific terms all move the actual numbers. Fixating on the monthly payment alone hides how much interest piles up over the life of the loan, an effect that grows sharply on longer 15 to 20 year terms. Insurance, maintenance, and docking fees belong in the budget too, well before the boat is yours.

Example: Financing a New Wakeboard Boat

  1. 1 Let's say you're looking to purchase a new wakeboard boat for $75,000. You've secured a loan offer with an annual interest rate of 8.5% over a 15-year term.
  2. 2 Using the formula: P = $75,000, i = 0.085 / 12 = 0.007083, and n = 15 * 12 = 180. The calculation would yield a monthly payment.
  3. 3 Your estimated monthly boat loan payment would be approximately $740.15. Over the 15-year term, you would pay a total of $133,227, with $58,227 of that being interest.
  4. 4 This example demonstrates that while the monthly payment seems manageable, the total interest paid over a 15-year term significantly increases the overall cost of the boat. This highlights the importance of using the calculator to understand the long-term financial commitment.

Source: CFPB — Consumer Tools · Last updated: April 2026

Frequently Asked Questions

What is a typical boat loan term?
Boat loans typically range from 10-20 years depending on the loan amount. Boats under $25,000 usually qualify for 10-12 year terms, while boats over $100,000 may qualify for 15-20 year terms. Shorter terms mean less total interest.
What interest rate can I expect on a boat loan?
Boat loan rates in 2026 typically range from 6-10% for new boats with good credit, and 8-14% for used boats or lower credit scores. Rates are generally higher than auto loans due to the luxury nature and longer terms.
How much boat can I afford?
A common rule is the annual cost of boat ownership (loan payment, insurance, maintenance, storage, fuel) should not exceed 5-10% of your gross household income. A $50,000 boat may cost $8,000-12,000 per year total including all expenses.

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