Boat Loan Calculator — True Cost of Ownership (Maintenance & Storage)

Calculate monthly boat loan payments including insurance, maintenance, and storage costs that can equal the loan payment itself.

✓ Formula verified: January 2026For informational purposes only

Boat Loan Calculator

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Boat Price*The total purchase price of the boat including any dealer fees, options, and accessories rolled into the financing. Boat prices range from $10,000 for a used fishing boat to $500,000+ for a new yacht. Enter the full negotiated price before down payment.

Down PaymentBoat loans typically require 10–20% down. A larger down payment reduces the loan amount, monthly payment, and total interest. It may also help you qualify for a better interest rate since the lender's risk decreases with more equity upfront.

Loan Term*Boat loans often run 10–20 years (120–240 months). Longer terms reduce monthly payments but dramatically increase total interest — a 20-year loan can cost nearly double the interest of a 10-year loan. Shorter terms (10–12 years) are recommended if your budget allows.

months

Interest Rate (APR)*Boat loan rates are typically higher than auto loans due to longer terms and depreciation risk. Excellent credit (720+): 6–9%. Good credit (680–719): 9–12%. Average credit: 12–18%. Always compare at least 3 lenders including credit unions for the best marine loan rates.

Monthly Maintenance & Storage (Optional)Average boat ownership costs beyond the loan: marina storage or slip fees $100–500/mo, insurance $30–100/mo, routine maintenance $50–200/mo, winterization $50–150/mo (seasonal). Rule of thumb: budget 10% of the boat's value annually for maintenance and storage.

Monthly Loan Payment

$382.26

True Monthly Cost (Loan + Maint.)

▼ $682.26

Total Interest Paid

▼ $28,806.95

Total Maintenance & Storage

▼ $54,000.00

Amount Financed

$40,000.00

Down Payment %

20%

Loan Term

15yr 0mo

What if your boat price changes? $45000 → $334.48 · $50000 → $382.26 · $55000 → $430.04

Scenario Comparison

Conservative (5%)

$16,470.09

$6,470.09 interest

Your scenario (7%)

$20,096.61

$10,096.61 interest

Aggressive (10%)

$27,070.41

$17,070.41 interest

High-risk (14%)

$40,224.71

$30,224.71 interest

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True Cost of Ownership

Monthly Loan

$382.26

Monthly Maint.

$300.00

Total Interest

$28,806.95

True Total Cost

$132,806.95

True monthly cost: $682.26 — including maintenance and storage. Over 180 months (15yr 0mo), that's $54,000.00 in non-loan costs.

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