contribution base
(1) Individuals In the case of an individual, the deduction provided in subsection (a) shall be limited as provided in the succeeding subparagraphs. (A) General rule Any charitable contribution to— (i) a church or a convention or association of churches, (ii) an educational organization which normally maintains a regular faculty and curriculum and normally has a regularly enrolled body of pupils or students in attendance at the place where its educational activities are regularly carried on, (iii) an organization the principal purpose or functions of which are the providing of medical or hospital care or medical education or medical research, if the organization is a hospital, or if the organization is a medical research organization directly engaged in the continuous active conduct of medical research in conjunction with a hospital, and during the calendar year in which the contribution is made such organization is committed to spend such contributions for such research before January 1 of the fifth calendar year which begins after the date such contribution is made, (iv) an organization which normally receives a substantial part of its support (exclusive of income received in the exercise or performance by such organization of its charitable, educational, or other purpose or function constituting the basis for its exemption under section 501(a) ) from the United States or any State or political subdivision thereof or from direct or indirect contributions from the general public, and which is organized and operated exclusively to receive, hold, invest, and administer property and to make expenditures to or for the benefit of a college or university which is an organization referred to in clause (ii) of this subparagraph and which is an agency or instrumentality of a State or political subdivision thereof, or which is owned or operated by a State or political subdivision thereof or by an agency or instrumentality of one or more States or political subdivisions, (v) a governmental unit referred to in subsection (c)(1), (vi) an organization referred to in subsection (c)(2) which normally receives a substantial part of its support (exclusive of income received in the exercise or performance by such organization of its charitable, educational, or other purpose or function constituting the basis for its exemption under section 501(a) ) from a governmental unit referred to in subsection (c)(1) or from direct or indirect contributions from the general public, (vii) a private foundation described in subparagraph (F), (viii) an organization described in section 509(a)(2) or (3), or (ix) an agricultural research organization directly engaged in the continuous active conduct of agricultural research (as defined in section 1404 of the National Agricultural Research, Extension, and Teaching Policy Act of 1977) in conjunction with a land-grant college or university (as defined in such section) or a non-land grant college of agriculture (as defined in such section), and during the calendar year in which the contribution is made such organization is committed to spend such contribution for such research before January 1 of the fifth calendar year which begins after the date such contribution is made, shall be allowed to the extent that the aggregate of such contributions does not exceed 50 percent of the taxpayer’s contribution base for the taxable year. (B) Other contributions Any charitable contribution other than a charitable contribution to which subparagraph (A) applies shall be allowed to the extent that the aggregate of such contributions does not exceed the lesser of— (i) 30 percent of the taxpayer’s contribution base for the taxable year, or (ii) the excess of 50 percent of the taxpayer’s contribution base for the taxable year over the amount of charitable contributions allowable under subparagraph (A) (determined without regard to subparagraph (C)). If the aggregate of such contributions exceeds the limitation of the preceding sentence, such excess shall be treated (in a manner consistent with the rules of subsection (d)(1)) as a charitable contribution (to which subparagraph (A) does not apply) in each of the 5 succeeding taxable years in order of time. (C) Special limitation with respect to contributions described in subparagraph (A) of certain capital gain property (i) In the case of charitable contributions described in subparagraph (A) of capital gain property to which subsection (e)(1)(B) does not apply, the total amount of contributions of such property which may be taken into account under subsection (a) for any taxable year shall not exceed 30 percent of the taxpayer’s contribution base for such year. For purposes of this subsection, contributions of capital gain property to which this subparagraph applies shall be taken into account after all other charitable contributions (other than charitable contributions to which subparagraph (D) applies). (ii) If charitable contributions described in subparagraph (A) of capital gain property to which clause (i) applies exceeds 30 percent of the taxpayer’s contribution base for any taxable year, such excess shall be treated, in a manner consistent with the rules of subsection (d)(1), as a charitable contribution of capital gain property to which clause (i) applies in each of the 5 succeeding taxable years in order of time. (iii) At the election of the taxpayer (made at such time and in such manner as the Secretary prescribes by regulations), subsection (e)(1) shall apply to all contributions of capital gain property (to which subsection (e)(1)(B) does not otherwise apply) made by the taxpayer during the taxable year. If such an election is made, clauses (i) and (ii) shall not apply to contributions of capital gain property made during the taxable year, and, in applying subsection (d)(1) for such taxable year with respect to contributions of capital gain property made in any prior contribution year for which an election was not made under this clause, such contributions shall be reduced as if subsection (e)(1) had applied to such contributions in the year in which made. (iv) For purposes of this paragraph, the term “capital gain property” means, with respect to any contribution, any capital asset the sale of which at its fair market value at the time of the contribution would have resulted in gain which would have been long-term capital gain. For purposes of the preceding sentence, any property which is property used in the trade or business (as defined in section 1231(b) ) shall be treated as a capital asset. (D) Special limitation with respect to contributions of capital gain property to organizations not described in subparagraph (A) (i) In general In the case of charitable contributions (other than charitable contributions to which subparagraph (A) applies) of capital gain property, the total amount of such contributions of such property taken into account under subsection (a) for any taxable year shall not exceed the lesser of— (I) 20 percent of the taxpayer’s contribution base for the taxable year, or (II) the excess of 30 percent of the taxpayer’s contribution base for the taxable year over the amount of the contributions of capital gain property to which subparagraph (C) applies. For purposes of this subsection, contributions of capital gain property to which this subparagraph applies shall be taken into account after all other charitable contributions. (ii) Carryover If the aggregate amount of contributions described in clause (i) exceeds the limitation of clause (i), such excess shall be treated (in a manner consistent with the rules of subsection (d)(1)) as a charitable contribution of capital gain property to which clause (i) applies in each of the 5 succeeding taxable years in order of time. (E) Contributions of qualified conservation contributions (i) In general Any qualified conservation contribution (as defined in subsection (h)(1)) shall be allowed to the extent the aggregate of such contributions does not exceed the excess of 50 percent of the taxpayer’s contribution base over the amount of all other charitable contributions allowable under this paragraph. (ii) Carryover If the aggregate amount of contributions described in clause (i) exceeds the limitation of clause (i), such excess shall be treated (in a manner consistent with the rules of subsection (d)(1)) as a charitable contribution to which clause (i) applies in each of the 15 succeeding years in order of time. (iii) Coordination with other subparagraphs For purposes of applying this subsection and subsection (d)(1), contributions described in clause (i) shall not be treated as described in subparagraph (A), (B), (C), or (D) and such subparagraphs shall apply without regard to such contributions. (iv) Special rule for contribution of property used in agriculture or livestock production (I) In general If the individual is a qualified farmer or rancher for the taxable year for which the contribution is made, clause (i) shall be applied by substituting “100 percent” for “50 percent”. (II) Exception Subclause (I) shall not apply to any contribution of property made after the date of the enactment of this subparagraph which is used in agriculture or livestock production (or available for such production) unless such contribution is subject to a restriction that such property remain available for such production. This subparagraph shall be applied separately with respect to property to which subclause (I) does not apply by reason of the preceding sentence prior to its application to property to which subclause (I) does apply. (v) Definition For purposes of clause (iv), the term “qualified farmer or rancher” means a taxpayer whose gross income from the trade or business of farming (within the meaning of section 2032A(e)(5)) is greater than 50 percent of the taxpayer’s gross income for the taxable year. (F) Certain private foundations The private foundations referred to in subparagraph (A)(vii) and subsection (e)(1)(B) are— (i) a private operating foundation (as defined in section 4942(j)(3) ), (ii) any other private foundation (as defined in section 509(a)) which, not later than the 15th day of the third month after the close of the foundation’s taxable year in which contributions are received, makes qualifying distributions (as defined in section 4942(g), without regard to paragraph (3) thereof), which are treated, after the application of section 4942(g)(3), as distributions out of corpus (in accordance with section 4942(h)) in an amount equal to 100 percent of such contributions, and with respect to which the taxpayer obtains adequate records or other sufficient evidence from the foundation showing that the foundation made such qualifying distributions, and (iii) a private foundation all of the contributions to which are pooled in a common fund and which would be described in section 509(a)(3) but for the right of any substantial contributor (hereafter in this clause called “donor”) or his spouse to designate annually the recipients, from among organizations described in paragraph (1) of section 509(a), of the income attributable to the donor’s contribution to the fund and to direct (by deed or by will) the payment, to an organization described in such paragraph (1), of the corpus in the common fund attributable to the donor’s contribution; but this clause shall apply only if all of the income of the common fund is required to be (and is) distributed to one or more organizations described in such paragraph (1) not later than the 15th day of the third month after the close of the taxable year in which the income is realized by the fund and only if all of the corpus attributable to any donor’s contribution to the fund is required to be (and is) distributed to one or more of such organizations not later than one year after his death or after the death of his surviving spouse if she has the right to designate the recipients of such corpus. (G) Increased limitation for cash contributions (i) In general In the case of any contribution of cash to an organization described in subparagraph (A), the total amount of such contributions which may be taken into account under subsection (a) for any taxable year beginning after December 31, 2017 , and before January 1, 2026 , shall not exceed 60 percent of the taxpayer’s contribution base for such year. (ii) Carryover If the aggregate amount of contributions described in clause (i) exceeds the applicable limitation under clause (i) for any taxable year described in such clause, such excess shall be treated (in a manner consistent with the rules of subsection (d)(1)) as a charitable contribution to which clause (i) applies in each of the 5 succeeding years in order of time. (iii) Coordination with subparagraphs (A) and (B) (I) In general Contributions taken into account under this subparagraph shall not be taken into account under subparagraph (A). (II) Limitation reduction For each taxable year described in clause (i), and each taxable year to which any contribution under this subparagraph is carried over under clause (ii), subparagraph (A) shall be applied by reducing (but not below zero) the contribution limitation allowed for the taxable year under such subparagraph by the aggregate contributions allowed under this subparagraph for such taxable year, and subparagraph (B) shall be applied by treating any reference to subparagraph (A) as a reference to both subparagraph (A) and this subparagraph. (H) Contribution base defined For purposes of this section, the term “contribution base” means adjusted gross income (computed without regard to any net operating loss carryback to the taxable year under section 172 ).