(a) In general. For the definition of the terms spouse, husband and wife, husband, wife, and marriage, see § 301.7701-18 of this chapter.
(b) Applicability date. The rules of this section apply to taxable years ending on or after September 2, 2016.
[T.D. 9785, 81 FR 60616, Sept. 2, 2016]
source: T.D. 6516, 25 FR 13032, Dec. 20, 1960; 25 FR 14021, Dec. 31, 1960, unless otherwise noted.
cite as: 26 CFR 31.7701-2