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Boat Loan Calculator

Monthly payment, total interest, and amortization for a US marine loan. Includes down payment, trade-in, sales tax, and dealer fees.

FINANCE

Calculate monthly payment, total interest, and full amortization for a boat loan in the United States. Marine lenders typically offer 10-20 year terms for new boats and 7-10 years for older or smaller craft. Includes down payment, trade-in, sales tax, dealer fees, and an affordability check against the 8-10% of pre-tax monthly income rule of thumb.

Boat loans use standard amortization math but with marine-specific terms: longer durations (15-20 years versus 5-7 for cars), higher APR (1-3% above auto loans), and stricter underwriting (often 700+ FICO required). Total interest on a 20-year boat loan can exceed the boat purchase price. Sales tax is collected by most states at standard rates; NC, RI, and AL have boat-specific caps. Total cost of ownership runs about 10% of purchase price annually for insurance, slip fee, fuel, and maintenance on top of the loan payment.

Disclaimer: Estimates only. Actual marine loan offers depend on FICO, age of boat, lender type, and current marine lending market. Always shop multiple lenders including credit unions and dedicated marine financiers.

Boat Loan Calculator

Calculate monthly payment, total interest, and full amortization for a boat loan. US marine lenders typically offer 10-20 year terms; older or smaller boats often cap at 7-10 years. Includes down payment, trade-in, sales tax, and dealer fees.

Boat Price ($)

Down Payment ($)Marine lenders typically require 10-20% down (higher for older boats).

Trade-In Value ($)

Sales Tax Rate (%)Most states tax boats at the standard sales tax rate. A few states (NC, RI, AL) have boat-specific caps.

Dealer / Registration Fees ($)

Loan APR (%)Boat loan rates are typically higher than auto loans by 1-3%. As of 2026, 7-9% is typical for prime credit.

Loan Term (years)New boats: 15-20 years. Used boats: 10-15 years. Personal watercraft: 7-10 years.

Monthly Payment

$439.60

Amount Financed$46,000

Total Interest Paid$33,128

Total Cost of Boat$86,628

Cost Breakdown

Sales Tax$3,000

True Out-the-Door Price$53,500

⚓ Affordability Check

Marine industry rule of thumb: monthly boat payment + insurance + storage + fuel should not exceed 8-10% of pre-tax monthly income.

How Boat Loans Differ from Auto Loans

Boat loans share the amortization math of auto loans but have several quirks. Terms run much longer - 15-20 years for new boats versus 5-7 for cars - because boats are bigger purchases and the lower monthly payment is the selling point. The longer term means substantially more total interest paid: a 20-year boat loan can cost more in interest than the boat itself.

Marine lenders treat collateral risk seriously. Boats depreciate quickly (40-60% in first 5 years for new), and a boat in financial distress can sail away or sink. Expect higher down payment requirements (10-20% typical), higher APR (1-3% above comparable auto), stricter credit standards (often 700+ FICO), and shorter terms on older boats. Survey and marine insurance are usually required.

Total cost of ownership is much more than the loan. Annual rule of thumb: 10% of purchase price covers insurance ($500-2,000/yr), storage/slip ($1,000-6,000/yr), fuel, maintenance, and winterization. A $50,000 boat realistically costs $5,000+ per year to keep on the water on top of the loan. Many buyers underestimate this and end up "boat poor" within 2-3 years.

Estimate only. Actual boat loan offers depend on credit score, age of boat, lender type, and current marine lending rates. Always shop multiple lenders including credit unions and dedicated marine financiers (TridentFunding, Essex Credit).

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Frequently Asked Questions

What is the Boat Loan Calculator for?

How do I use the Boat Loan Calculator?

How accurate are my boat loan results?

Estimates only. Actual marine loan offers depend on FICO, age of boat, lender type, and current marine lending market. Always shop multiple lenders including credit unions and dedicated marine financiers.

Is the Boat Loan Calculator free to use?

Yes - every calculator on WhichCalc is completely free with no signup, no usage limits, and no tracking on the calculation itself. Results display instantly in your browser and your inputs are never sent to a server. Bookmark the page if you use this calculator regularly.

Boat Loan Calculator

Boat Loan Calculator

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