# Boat Loan Calculator > Estimate monthly payments for a boat or yacht loan, which typically feature longer terms than auto loans. Page: https://askcalculators.com/calculator/boat-loan-calculator/ Definition: https://askcalculators.com/calculator/boat-loan-calculator/definition.json JSON Schema: https://askcalculators.com/calculator/boat-loan-calculator/schema.json Version: 7.0.0 Maintained by: AskCalculators (software project; not a credentialed reviewer) Qualified review: pending. Automated checks do not establish professional approval. Page status: Live Review status: Pending ## Use Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation. Example: https://askcalculators.com/calculator/boat-loan-calculator/?price=50000&downPayment=10000&rate=7.5&term=15 ## Inputs - price: Boat Price; type=number; optional; default=50000 - downPayment: Down Payment; type=number; optional; default=10000 - rate: Interest Rate; type=number; optional; default=7.5 - term: Loan Term (Years); type=number; optional; default=15 ## Outputs - result: Result; format=text; primary ## Formula Financed amount = boat price − down payment; monthly payment uses the standard installment-loan formula. ## Rules - Empty optional inputs are undefined, not zero. - Hidden conditional inputs are ignored. - Do not invent missing required inputs.