(a) In general. No charitable contributions deduction is allowable to a trust under section 642(c) for any taxable year for amounts allocable to the trust's unrelated business income for the taxable year. For the purpose of section 681(a) the term unrelated business income of a trust means an amount which would be computed as the trust's unrelated business taxable income under section 512 and the regulations thereunder, if the trust were an organization exempt from tax under section 501(a) by reason of section 501(c)(3). For the purpose of the computation under section 512, the term unrelated trade or business includes a trade or business carried on by a partnership of which a trust is a member, as well as one carried on by the trust itself. While the charitable contributions deduction under section 642(c) is entirely disallowed by section 681(a) for amounts allocable to “unrelated business income”, a partial deduction is nevertheless allowed for such amounts by the operation of section 512(b)(11), as illustrated in paragraphs (b) and (c) of this section. This partial deduction is subject to the percentage limitations applicable to contributions by an individual under section 170(b)(1) (A) and (B), and is not allowed for amounts set aside or to be used for charitable purposes but not actually paid out during the taxable year. Charitable contributions deductions otherwise allowable under section 170, 545(b)(2), or 642(c) for contributions to a trust are not disallowed solely because the trust has unrelated business income.
(b) Determination of amounts allocable to unrelated business income. In determining the amount for which a charitable contributions deduction would otherwise be allowable under section 642(c) which are allocable to unrelated business income, and therefore not allowable as a deduction, the following steps are taken:
(1) There is first determined the amount which would be computed as the trust's unrelated business taxable income under section 512 and the regulations thereunder if the trust were an organization exempt from tax under section 501(a) by reason of section 501(c)(3), but without taking the charitable contributions deduction allowed under section 512(b)(11).
(2) The amount for which a charitable contributions deduction would otherwise be allowable under section 642(c) is then allocated between the amount determined in subparagraph (1) of this paragraph and any other income of the trust. Unless the facts clearly indicate to the contrary, the allocation to the amount determined in subparagraph (1) of this paragraph is made on the basis of the ratio (but not in excess of 100 percent) of the amount determined in subparagraph (1) of this paragraph to the taxable income of the trust, determined without the deduction for personal exemption under section 642(b), the charitable contributions deduction under section 642(c), or the deduction for distributions to beneficiaries under section 661(a).
(3) The amount for which a charitable contributions deduction would otherwise be allowable under section 642(c) which is allocable to unrelated business income as determined in subparagraph (2) of this paragraph, and therefore not allowable as a deduction, is the amount determined in subparagraph (2) of this paragraph reduced by the charitable contributions deduction which would be allowed under section 512(b)(11) if the trust were an organization exempt from tax under section 501(a) by reason of section 501(c)(3).
(c) Examples.
(1) The application of this section may be illustrated by the following examples, in which it is assumed that the Y charity is not a charitable organization qualifying under section 170(b)(1)(A) (see subparagraph (2) of this paragraph):
(ii) The deduction otherwise allowable under section 642(c) is $30,000 ($20,000 paid to Y charity and $10,000 capital gains allocated to corpus and permanently set aside for charitable purposes). The portion allocable to the unrelated business income is $15,000, that is, an amount which bears the same ratio to $20,000 (the amount paid to Y charity) as $30,000 bears to $40,000 ($50,000 less $10,000 capital gains allocable to corpus). The portion allocable to the unrelated business income, and therefore disallowed as a deduction, is $15,000 reduced by $6,000 (the charitable contributions deduction which would be allowable under section 512(b)(11)), or $9,000.
(2) If, in the examples in subparagraph (1) of this paragraph, the Y charity were a charitable organization qualifying under section 170(b)(1)(A), then the deduction allowable under section 512(b)(11) would be computed at a rate of 30 percent.
[T.D. 6500, 25 FR 11814, Nov. 26, 1960, as amended by T.D. 6605, 27 FR 8097, Aug. 15, 1962]