You must first consider if you use your dwelling as a home. You are considered to use a dwelling as a home if you use it for personal purposes during the tax year for more than the greater of 14 days or 10% of the total days it is rented to others at a fair rental price. It is possible that you will use more than one dwelling unit as a home during the year. For example, if you live in your main home for 11 months and in your vacation home for 30 days, your home is a dwelling unit and your vacation home is also a dwelling unit, unless you rent your vacation home to others at a fair rental value for more than 300 days during the year.

There is a special rule if you use a dwelling as a home and rent it for fewer than 15 days. In this case, do not report any of the rental income and do not deduct any expenses as rental expenses. If you itemize your deduction on Form 1040, Schedule A (PDF) Itemized Deductions, you may be able to deduct mortgage interest, property taxes, and any casualty losses. For additional information, refer to Tax Topic 415, Renting Vacation Property/Renting to Relatives and Publication 527, Residential Rental Property (including Rental of Vacation Homes).

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