(a) A deduction is allowable under section 215 with respect to periodic payments in the nature of, or in lieu of, alimony or an allowance for support actually paid by the taxpayer during his taxable year and required to be included in the income of the payee wife or former wife, as the case may be, under section 71. As to the amounts required to be included in the income of such wife or former wife, see section 71 and the regulations thereunder. For definition of husband and wife see section 7701(a) (17).
(b) The deduction under section 215 is allowed only to the obligor spouse. It is not allowed to an estate, trust, corporation, or any other person who may pay the alimony obligation of such obligor spouse. The obligor spouse, however, is not allowed a deduction for any periodic payment includible under section 71 in the income of the wife or former wife, which payment is attributable to property transferred in discharge of his obligation and which, under section 71(d) or section 682, is not includible in his gross income.
(c) The following examples, in which both H and W file their income tax returns on the basis of a calendar year, illustrate cases in which a deduction is or is not allowed under section 215:
(d) For other examples, see sections 71 and 682 and the regulations thereunder.