Is a longer term always a bad idea?

Not automatically — it lowers the monthly payment and can make an otherwise unaffordable purchase workable, but it increases total interest substantially and extends the period where you owe more than a depreciating boat or RV is worth.

What APR should I expect?

As of mid-2026, boat loans have averaged roughly 7-10% (about 8.34% in Q2 2026) and RV loans roughly 6-12% for borrowers with good-to-excellent credit (680+); your own quote depends on credit, loan size, and lender.

Does a trade-in help on an RV or boat loan the same way it does on a car loan?

Yes — it reduces the amount financed just like a car trade-in, lowering both the monthly payment and total interest, though it doesn't change the APR itself.

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Finance

RV & Boat Loan Calculator

Monthly payment and total interest for an RV or boat loan, with terms running up to 20 years.

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Last reviewed 2026-08-31

About the RV & Boat Loan Calculator

Calculates the monthly payment, total interest, and total cost of a fixed-rate RV or boat loan, which commonly runs 10 to 20 years — much longer than a typical auto loan.

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How to use it

Enter the RV or boat price.
Enter your Down payment and, if applicable, a Trade-in value.
Enter the APR your lender quoted.
Choose the Loan term — options run from 5 to 20 years, reflecting how these loans are actually structured.
Read the monthly payment, total interest, and total cost in the result panel.

Formula

Amount financed = price − down payment − trade-in value. Monthly payment = P × r × (1 + r)^n / ((1 + r)^n − 1), where P is the amount financed, r is the monthly rate (APR ÷ 12 ÷ 100), and n is the term in months. Total interest = (monthly payment × n) − P. Total cost = (monthly payment × n) + down payment.

Worked example

A $45,000 RV or boat with a $5,000 down payment, no trade-in, at 8% APR over 180 months (15 years): a monthly payment of $382.26, $28,806.95 in total interest, and a total cost of $73,806.95.

Interpreting your result

Unlike a car loan's typical 5-7 year term, RV and boat loans commonly stretch 10 to 20 years because loan amounts run much larger and many lenders treat these as dedicated marine/RV installment products. A longer term lowers the monthly payment but can multiply total interest paid — and RVs and boats depreciate quickly, so a 20-year loan can leave you owing far more than the vehicle is worth for much of its term. Rate and term defaults here are illustrative; get an actual quote from your lender.

Recommendations

• Compare a 10-year and a 20-year term side by side before choosing — stretching a $60,000 loan at 8% APR from 10 to 20 years roughly doubles total interest paid, even though it lowers the monthly payment.
• Boat and RV loans often carry marine/RV-specific underwriting (and sometimes require the boat itself as collateral, similar to a mortgage) — shop specialty lenders and credit unions, not just your bank's standard auto-loan desk.
• Because these assets depreciate quickly, avoid financing longer than you expect to keep the RV or boat — a long remaining loan balance against a fast-depreciating asset makes trading in or selling early expensive.

Frequently asked questions

Loan amounts are typically much larger, and many lenders structure these as dedicated marine/RV installment loans (sometimes secured similarly to a mortgage) rather than standard auto loans, which supports stretching repayment out to 10-20 years.