Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Monthly payment
$506.18
Amount financed
$47,000
Total interest
$25,890
Total paid
$72,890
Psst — share this and help Rex grow
One click, a permanent link with your numbers baked in.
How to use this
- 1Enter boat price ($).
- 2Enter down payment ($).
- 3Enter interest rate (%).
- 4Enter term (years).
- 5Read your monthly payment on the right — it updates as you type.
- 6Hit Share to keep the scenario or send it to someone.
About this calculator
Boat loans run longer than car loans, which hides the true interest cost. See the payment and lifetime interest side by side.
Worked example
Using the values the calculator loads with:
Inputs
- Boat price: 55000 $
- Down payment: 8000 $
- Interest rate: 7.9 %
- Term: 12 years
Results
- Monthly payment: $506.18
- Amount financed: $47,000
- Total interest: $25,890
- Total paid: $72,890
What each field means
Inputs
- Boat price ($)
- The boat price used in the calculation, measured in $. Starts at 55000 $ so you have a working example on load.
- Down payment ($)
- The down payment used in the calculation, measured in $. Starts at 8000 $ so you have a working example on load.
- Interest rate (%)
- The interest rate used in the calculation, measured in %. Starts at 7.9 % so you have a working example on load.
- Term (years)
- The term used in the calculation, measured in years. Starts at 12 years so you have a working example on load. Accepted range: 1–20 years.
Results
- Monthly payment
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Amount financed
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Total interest
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Total paid
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the boat loan calculator work?
Boat loans run longer than car loans, which hides the true interest cost. See the payment and lifetime interest side by side.
What do I need to enter?
4 values: boat price, down payment, interest rate, and term. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the monthly payment result mean?
It is returned as a money amount in US dollars and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
Who is this tool for?
It's built for anyone comparing money scenarios before committing — budgeting a payment, sanity-checking a quote, or seeing what a change in rate or term actually costs.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Boat Loan Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/boat-loan
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/boat-loan" target="_blank" rel="noopener">Boat Loan Calculator — RevenueLab</a> (2026).</p>
Source: [Boat Loan Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/boat-loan) (2026).