Any RV with sleeping, cooking, and toilet facilities qualifies as an IRS second home, letting owners deduct loan interest on Schedule A.
Qualification requires a secured RV loan, itemized deductions, and an unused second-home slot. Cash buyers and unsecured loan holders get nothing.
The deduction only wins if your itemized total beats the standard deduction, so run the math both ways before claiming it.
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If you own an RV with a bed, a stove, and a toilet, the IRS calls it a home. That means the interest on your RV loan can be deducted as mortgage interest on Schedule A, the same way you’d deduct interest on a house or condo. Most RV owners never claim it, either because their lender doesn’t send a Form 1098 or because nobody told them the loophole exists. In a year when the 10-year Treasury sits at 4.49% and RV loan rates have climbed alongside it, the interest you’re paying is finally big enough to matter on your return.
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The Real Rule
The tax code treats a “qualified home” as any property with sleeping, cooking, and toilet facilities. That definition doesn’t care whether the property has wheels, a hull, or a foundation. A Class A motorhome, a fifth wheel, a travel trailer, a camper van, even a houseboat, all qualify, provided the loan used to buy it is secured by the RV itself. Deduct the interest on the same line you’d use for a house.
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All The Proof You Need
The authority is Internal Revenue Code Section 163(h)(4)(A)(i), which defines a qualified residence to include a taxpayer’s principal residence and one other residence selected as a second home. IRS Publication 936 spells it out: a qualified home includes “a house, condominium, cooperative, mobile home, house trailer, boat, or similar property that has sleeping, cooking, and toilet facilities.” The IRS has repeatedly confirmed RVs meeting those three criteria fit the definition.
Who Qualifies, Who Doesn’t
You qualify if all four are true: your RV has the three facilities, the loan is secured by the RV (the lender can repossess it), you itemize deductions rather than taking the standard deduction, and you haven’t already assigned your “second home” slot to another property. Cash buyers get nothing to deduct. Owners who financed with an unsecured personal loan, a home equity line used on a non-primary property, or a credit card, get nothing either. The loan has to be secured by the RV.
You also lose the deduction if the RV is strictly a rental. Personal use has to exceed the greater of 14 days or 10% of rental days for it to count as a residence.
How to Actually Claim It
Confirm your RV has sleeping quarters, a cooking setup (even a two-burner counts), and a toilet (a cassette or black-tank toilet qualifies).
Pull your loan documents and verify the RV is listed as collateral. Dedicated RV loans from marine and recreational lenders almost always are.
Request an interest statement from your lender. Many RV lenders don’t automatically issue Form 1098, but they’ll produce a year-end interest summary on request.
Designate the RV as your second home for the tax year. You can switch year to year, but only one second home counts at a time.
Enter the interest on Schedule A. If the lender didn’t file a 1098 with the IRS, use the line for “home mortgage interest not reported on Form 1098” and include the lender’s name and address.
Keep the acquisition debt on your primary and second home combined under the $750,000 cap for loans originated after December 15, 2017. Older loans get grandfathered at $1 million.
The Small Details
You have to itemize. For most households, the standard deduction is still the better answer, especially given that the personal savings rate has fallen to 3.9% as of Q1 2026 and property tax and state income tax deductions remain capped. Run the math both ways before claiming it. Second trap: only one second home per year, so if you already deduct interest on a lake cabin, you have to choose. Third trap: if your loan is unsecured, no argument will save it, the deduction disappears entirely. Fourth trap: home equity indebtedness used for anything other than buying, building, or improving the RV itself is not deductible under current rules.
One more wrinkle worth checking. If rates ease from current levels near the 12-month high of 4.67%, a refinance may shrink your deductible interest, but it also shrinks your monthly payment. The deduction is a rebate, not a reason to overpay for financing.
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