When you rent out your home or other dwelling unit (9.7) for part of the year at fair market value and also use it personally on some days during the taxable year, expenses are allocated between personal and rental use. By law, deductible rental expenses are limited by this fraction:
The days a unit is held out for rent but not actually rented are not counted as rental days. Any day for which the unit is rented at a fair rental price is counted as a rental day for allocation purposes even if in fact you use it for personal purposes on that day.
There is a conflict of opinion between the IRS and some courts over the issue of whether the above fractional formula applies also to interest and taxes. According to the IRS, it does. According to the Tax Court and two federal appeals courts, interest and taxes are allocated on a daily basis. Thus, if a house is rented for 61 days in 2012, 16.67% (61/366) of the deductible interest and taxes is deducted first from the rental income. This rule allows a larger amount of other expenses to be deducted from rental income than is allowed under the IRS application of the formula; see Example 2 below.
If your personal use of a residence exceeds the 14-day/10% test (9.7), the residence was rented for at least 15 days during the year, and the allocable rental expenses (including depreciation) exceed rental income, you cannot deduct the net loss from other income. Some of the expenses will not be currently deductible. The allocable rental expenses are deducted from rental income in a specific order:
Step 1 expenses, as well as the expenses from Steps 2 and 3 that offset rental income, are deducted on the applicable lines of Schedule E. Operating expenses from Step 2 and depreciation from Step 3 that exceed the balance of rental income are carried forward to the next year as rental expenses for the same property. In the next year, the carried-over expenses are deductible only to the extent of rental income from the property for that year, following Steps 1–3, whether or not your personal use of the residence exceeds the 14-day/10% test (9.7) for that carryover year.
If you itemize deductions, you claim the personal-use portion of deductible mortgage interest, real estate taxes, and casualty and theft losses on Schedule A of Form 1040.
If you personally use a rental vacation home for more than the greater of 14 days or 10% of the fair market rental days (9.7), the residence may be treated as a qualifying second residence under the mortgage interest rules (15.1). The interest on a qualifying second home is generally fully deductible and is not subject to disallowance under the passive activity restrictions in Chapter 10. As shown in Step 1 above, the portion of the deductible mortgage interest allocable to the rental portion is deducted from rental income (along with taxes) before other expenses.
Rent income | $ 2,000 | |
Less: Interest (½ of $1,600) | $ 800 | |
Taxes (½ of $800) | 400 | 1,200 |
$ 800 | ||
Less: Maintenance (½ of $1,200) | 600 | |
Less: Depreciation (½ of $1,500, or $750) | $ 200 | |
limited to $200 balance of rental income) | $ 200 |
18.217.2.223