26 USC 280A - Disallowance of certain expenses in connection with business use of home, rental of vacation homes, etc.
Except as otherwise provided in this section, in the case of a taxpayer who is an individual or an S corporation, no deduction otherwise allowable under this chapter shall be allowed with respect to the use of a dwelling unit which is used by the taxpayer during the taxable year as a residence.
Subsection (a) shall not apply to any deduction allowable to the taxpayer without regard to its connection with his trade or business (or with his income-producing activity).
Subsection (a) shall not apply to any item to the extent such item is allocable to a portion of the dwelling unit which is exclusively used on a regular basis
In the case of an employee, the preceding sentence shall apply only if the exclusive use referred to in the preceding sentence is for the convenience of his employer. For purposes of subparagraph (A), the term principal place of business includes a place of business which is used by the taxpayer for the administrative or management activities of any trade or business of the taxpayer if there is no other fixed location of such trade or business where the taxpayer conducts substantial administrative or management activities of such trade or business.
Subsection (a) shall not apply to any item to the extent such item is allocable to space within the dwelling unit which is used on a regular basis as a storage unit for the inventory or product samples of the taxpayer held for use in the taxpayers trade or business of selling products at retail or wholesale, but only if the dwelling unit is the sole fixed location of such trade or business.
Subsection (a) shall not apply to any item which is attributable to the rental of the dwelling unit or portion thereof (determined after the application of subsection (e)).
Subsection (a) shall not apply to any item to the extent that such item is allocable to the use of any portion of the dwelling unit on a regular basis in the taxpayers trade or business of providing day care for children, for individuals who have attained age 65, or for individuals who are physically or mentally incapable of caring for themselves.
Subparagraph (A) shall apply to items accruing for a period only if the owner or operator of the trade or business referred to in subparagraph (A)
a license, certification, registration, or approval as a day care center or as a family or group day care home under the provisions of any applicable State law. This subparagraph shall apply only to items accruing in periods beginning on or after the first day of the first month which begins more than 90 days after the date of the enactment of the Tax Reduction and Simplification Act of 1977.
If a portion of the taxpayers dwelling unit used for the purposes described in subparagraph (A) is not used exclusively for those purposes, the amount of the expenses attributable to that portion shall not exceed an amount which bears the same ratio to the total amount of the items allocable to such portion as the number of hours the portion is used for such purposes bears to the number of hours the portion is available for use.
In the case of a use described in paragraph (1), (2), or (4), and in the case of a use described in paragraph (3) where the dwelling unit is used by the taxpayer during the taxable year as a residence, the deductions allowed under this chapter for the taxable year by reason of being attributed to such use shall not exceed the excess of
Any amount not allowable as a deduction under this chapter by reason of the preceding sentence shall be taken into account as a deduction (allocable to such use) under this chapter for the succeeding taxable year. Any amount taken into account for any taxable year under the preceding sentence shall be subject to the limitation of the 1st sentence of this paragraph whether or not the dwelling unit is used as a residence during such taxable year.
Paragraphs (1) and (3) shall not apply to any item which is attributable to the rental of the dwelling unit (or any portion thereof) by the taxpayer to his employer during any period in which the taxpayer uses the dwelling unit (or portion) in performing services as an employee of the employer.
For purposes of this section, a taxpayer uses a dwelling unit during the taxable year as a residence if he uses such unit (or portion thereof) for personal purposes for a number of days which exceeds the greater of
For purposes of subparagraph (B), a unit shall not be treated as rented at a fair rental for any day for which it is used for personal purposes.
For purposes of this section, the taxpayer shall be deemed to have used a dwelling unit for personal purposes for a day if, for any part of such day, the unit is used
The Secretary shall prescribe regulations with respect to the circumstances under which use of the unit for repairs and annual maintenance will not constitute personal use under this paragraph, except that if the taxpayer is engaged in repair and maintenance on a substantially full time basis for any day, such authority shall not allow the Secretary to treat a dwelling unit as being used for personal use by the taxpayer on such day merely because other individuals who are on the premises on such day are not so engaged.
A taxpayer shall not be treated as using a dwelling unit for personal purposes by reason of a rental arrangement for any period if for such period such dwelling unit is rented, at a fair rental, to any person for use as such persons principal residence.
For purposes of this paragraph, the term shared equity financing agreement means an agreement under which
For purposes of this paragraph, the term qualified ownership interest means an undivided interest for more than 50 years in the entire dwelling unit and appurtenant land being acquired in the transaction to which the shared equity financing agreement relates.
For purposes of applying subsection (c)(5) to deductions allocable to a qualified rental period, a taxpayer shall not be considered to have used a dwelling unit for personal purposes for any day during the taxable year which occurs before or after a qualified rental period described in subparagraph (B)(i), or before a qualified rental period described in subparagraph (B)(ii), if with respect to such day such unit constitutes the principal residence (within the meaning of section 121) of the taxpayer.
For purposes of subparagraph (A), the term qualified rental period means a consecutive period of
for which such unit is rented, or is held for rental, at a fair rental.
In any case where a taxpayer who is an individual or an S corporation uses a dwelling unit for personal purposes on any day during the taxable year (whether or not he is treated under this section as using such unit as a residence), the amount deductible under this chapter with respect to expenses attributable to the rental of the unit (or portion thereof) for the taxable year shall not exceed an amount which bears the same relationship to such expenses as the number of days during each year that the unit (or portion thereof) is rented at a fair rental bears to the total number of days during such year that the unit (or portion thereof) is used.
This subsection shall not apply with respect to deductions which would be allowable under this chapter for the taxable year whether or not such unit (or portion thereof) was rented.
For purposes of this section
The term dwelling unit includes a house, apartment, condominium, mobile home, boat, or similar property, and all structures or other property appurtenant to such dwelling unit.
The term dwelling unit does not include that portion of a unit which is used exclusively as a hotel, motel, inn, or similar establishment.
In the case of an S corporation, subparagraphs (A) and (B) of subsection (d)(2) shall be applied by substituting any shareholder of the S corporation for the taxpayer each place it appears.
If subsection (a) applies with respect to any dwelling unit (or portion thereof) for the taxable year
Nothing in this section shall be construed to disallow any deduction allowable under section 162 (a)(2) (or any deduction which meets the tests of section 162 (a)(2) but is allowable under another provision of this title) by reason of the taxpayers being away from home in the pursuit of a trade or business (other than the trade or business of renting dwelling units).
Notwithstanding any other provision of this section or section 183, if a dwelling unit is used during the taxable year by the taxpayer as a residence and such dwelling unit is actually rented for less than 15 days during the taxable year, then