In the case of an individual, there shall be allowed as a deduction an amount equal to the qualified retirement contributions of the individual for the taxable year.

The amount allowable as a deduction under subsection (a) to any individual for any taxable year shall not exceed the lesser of—

The amount allowable as a deduction under subsection (a) to any individual for any taxable year shall not exceed the lesser of—

(A) the deductible amount, or

(B) an amount equal to the compensation includible in the individual’s gross income for such taxable year.

(2) Special rule for employer contributions under simplified employee pensions This section shall not apply with respect to an employer contribution to a simplified employee pension.

Notwithstanding paragraph (1), the amount allowable as a deduction under subsection (a) with respect to any contributions on behalf of an employee to a plan described in section 501(c)(18) shall not exceed the lesser of—

(A) $7,000, or

(B) an amount equal to 25 percent of the compensation (as defined in section 415(c)(3)) includible in the individual’s gross income for such taxable year.

(4) Special rule for simple retirement accounts This section shall not apply with respect to any amount contributed to a simple retirement account established under section 408(p).

For purposes of paragraph (1)(A)—

(A) In general The deductible amount is $5,000.

(B) Catch-up contributions for individuals 50 or older (i) In general In the case of an individual who has attained the age of 50 before the close of the taxable year, the deductible amount for such taxable year shall be increased by the applicable amount. (ii) Applicable amount For purposes of clause (i), the applicable amount is $1,000.

(C) Cost-of-living adjustment (i) In generalIn the case of any taxable year beginning in a calendar year after 2008, the $5,000 amount under subparagraph (A) shall be increased by an amount equal to— (I) such dollar amount, multiplied by (II) the cost-of-living adjustment determined under section 1(f)(3) for the calendar year in which the taxable year begins, determined by substituting “calendar year 2007” for “calendar year 2016” in subparagraph (A)(ii) thereof. (ii) Rounding rules If any amount after adjustment under clause (i) is not a multiple of $500, such amount shall be rounded to the next lower multiple of $500.

In the case of an individual to whom this paragraph applies for the taxable year, the limitation of paragraph (1) of subsection (b) shall be equal to the lesser of—

In the case of an individual to whom this paragraph applies for the taxable year, the limitation of paragraph (1) of subsection (b) shall be equal to the lesser of—

(A) the dollar amount in effect under subsection (b)(1)(A) for the taxable year, or

(B) the sum of— (i) the compensation includible in such individual’s gross income for the taxable year, plus (ii) the compensation includible in the gross income of such individual’s spouse for the taxable year reduced by— (I) the amount allowed as a deduction under subsection (a) to such spouse for such taxable year, (II) the amount of any designated nondeductible contribution (as defined in section 408(o)) on behalf of such spouse for such taxable year, and (III) the amount of any contribution on behalf of such spouse to a Roth IRA under section 408A for such taxable year.

Paragraph (1) shall apply to any individual if—

(A) such individual files a joint return for the taxable year, and

(B) the amount of compensation (if any) includible in such individual’s gross income for the taxable year is less than the compensation includible in the gross income of such individual’s spouse for the taxable year.

No deduction shall be allowed under this section with respect to any qualified retirement contribution for the benefit of an individual if such individual has attained age 70½ before the close of such individual’s taxable year for which the contribution was made.

(1) Beneficiary must be under age 70½ No deduction shall be allowed under this section with respect to any qualified retirement contribution for the benefit of an individual if such individual has attained age 70½ before the close of such individual’s taxable year for which the contribution was made.

(2) Recontributed amounts No deduction shall be allowed under this section with respect to a rollover contribution described in section 402(c), 403(a)(4), 403(b)(8), 408(d)(3), or 457(e)(16).

(3) Amounts contributed under endowment contract In the case of an endowment contract described in section 408(b), no deduction shall be allowed under this section for that portion of the amounts paid under the contract for the taxable year which is properly allocable, under regulations prescribed by the Secretary, to the cost of life insurance.

(4) Denial of deduction for amount contributed to inherited annuities or accounts No deduction shall be allowed under this section with respect to any amount paid to an inherited individual retirement account or individual retirement annuity (within the meaning of section 408(d)(3)(C)(ii)).

For purposes of this section, the term “qualified retirement contribution” means—

(1) any amount paid in cash for the taxable year by or on behalf of an individual to an individual retirement plan for such individual’s benefit, and

(2) any amount contributed on behalf of any individual to a plan described in section 501(c)(18).

If for the taxable year the maximum amount allowable as a deduction under this section for contributions to an individual retirement plan exceeds the amount contributed, then the taxpayer shall be treated as having made an additional contribution for the taxable year in an amount equal to the lesser of—

(1) Compensation For purposes of this section, the term “compensation” includes earned income (as defined in section 401(c)(2)). The term “compensation” does not include any amount received as a pension or annuity and does not include any amount received as deferred compensation. For purposes of this paragraph, section 401(c)(2) shall be applied as if the term trade or business for purposes of section 1402 included service described in subsection (c)(6). The term “compensation” includes any differential wage payment (as defined in section 3401(h)(2)).

(2) Married individuals The maximum deduction under subsection (b) shall be computed separately for each individual, and this section shall be applied without regard to any community property laws.

(3) Time when contributions deemed made For purposes of this section, a taxpayer shall be deemed to have made a contribution to an individual retirement plan on the last day of the preceding taxable year if the contribution is made on account of such taxable year and is made not later than the time prescribed by law for filing the return for such taxable year (not including extensions thereof).

[(4) Repealed. Pub. L. 113–295, div. A, title II, § 221(a)(39)(A), Dec. 19, 2014, 128 Stat. 4043]

(5) Employer payments For purposes of this title, any amount paid by an employer to an individual retirement plan shall be treated as payment of compensation to the employee (other than a self-employed individual who is an employee within the meaning of section 401(c)(1)) includible in his gross income in the taxable year for which the amount was contributed, whether or not a deduction for such payment is allowable under this section to the employee.

If for the taxable year the maximum amount allowable as a deduction under this section for contributions to an individual retirement plan exceeds the amount contributed, then the taxpayer shall be treated as having made an additional contribution for the taxable year in an amount equal to the lesser of—

(A) In generalIf for the taxable year the maximum amount allowable as a deduction under this section for contributions to an individual retirement plan exceeds the amount contributed, then the taxpayer shall be treated as having made an additional contribution for the taxable year in an amount equal to the lesser of— (i) the amount of such excess, or (ii) the amount of the excess contributions for such taxable year (determined under section 4973(b)(2) without regard to subparagraph (C) thereof).

(B) Amount contributedFor purposes of this paragraph, the amount contributed— (i) shall be determined without regard to this paragraph, and (ii) shall not include any rollover contribution.

(C) Special rule where excess deduction was allowed for closed year Proper reduction shall be made in the amount allowable as a deduction by reason of this paragraph for any amount allowed as a deduction under this section for a prior taxable year for which the period for assessing deficiency has expired if the amount so allowed exceeds the amount which should have been allowed for such prior taxable year.

(7) Special rule for compensation earned by members of the Armed Forces for service in a combat zone. For purposes of subsections (b)(1)(B) and (c), the amount of compensation includible in an individual’s gross income shall be determined without regard to section 112.

(8) Election not to deduct contributions For election not to deduct contributions to individual retirement plans, see section 408(o)(2)(B)(ii).

The amount determined under this paragraph with respect to any dollar limitation shall be the amount which bears the same ratio to such limitation as—

(1) In general If (for any part of any plan year ending with or within a taxable year) an individual or the individual’s spouse is an active participant, each of the dollar limitations contained in subsections (b)(1)(A) and (c)(1)(A) for such taxable year shall be reduced (but not below zero) by the amount determined under paragraph (2).

The amount determined under this paragraph with respect to any dollar limitation shall be the amount which bears the same ratio to such limitation as—

(A) In generalThe amount determined under this paragraph with respect to any dollar limitation shall be the amount which bears the same ratio to such limitation as— (i) the excess of— (I) the taxpayer’s adjusted gross income for such taxable year, over (II) the applicable dollar amount, bears to (ii) $10,000 ($20,000 in the case of a joint return).

(B) No reduction below $200 until complete phase-out No dollar limitation shall be reduced below $200 under paragraph (1) unless (without regard to this subparagraph) such limitation is reduced to zero.

(C) Rounding Any amount determined under this paragraph which is not a multiple of $10 shall be rounded to the next lowest $10.

For purposes of this subsection—

(A) Adjusted gross incomeAdjusted gross income of any taxpayer shall be determined— (i) after application of sections 86 and 469, and (ii) without regard to sections 135, 137, 221, 222, and 911 or the deduction allowable under this section.

(B) Applicable dollar amountThe term “applicable dollar amount” means the following: (i) In the case of a taxpayer filing a joint return, $80,000. (ii) In the case of any other taxpayer (other than a married individual filing a separate return), $50,000. (iii) In the case of a married individual filing a separate return, zero.

A husband and wife who—

(A) file separate returns for any taxable year, and

(B) live apart at all times during such taxable year,

For purposes of this subsection, the term “active participant” means, with respect to any plan year, an individual—

(A) who is an active participant in— (i) a plan described in section 401(a) which includes a trust exempt from tax under section 501(a), (ii) an annuity plan described in section 403(a), (iii) a plan established for its employees by the United States, by a State or political subdivision thereof, or by an agency or instrumentality of any of the foregoing, (iv) an annuity contract described in section 403(b), (v) a simplified employee pension (within the meaning of section 408(k)), or (vi) any simple retirement account (within the meaning of section 408(p)), or

(B) who makes deductible contributions to a trust described in section 501(c)(18).

For purposes of this subsection, any individual described in any of the following subparagraphs shall not be treated as an active participant for any taxable year solely because of any participation so described:

(A) Members of reserve components Participation in a plan described in subparagraph (A)(iii) of paragraph (5) by reason of service as a member of a reserve component of the Armed Forces (as defined in section 10101 of title 10), unless such individual has served in excess of 90 days on active duty (other than active duty for training) during the year.

(B) Volunteer firefightersA volunteer firefighter— (i) who is a participant in a plan described in subparagraph (A)(iii) of paragraph (5) based on his activity as a volunteer firefighter, and (ii) whose accrued benefit as of the beginning of the taxable year is not more than an annual benefit of $1,800 (when expressed as a single life annuity commencing at age 65).

If this subsection applies to an individual for any taxable year solely because their spouse is an active participant, then, in applying this subsection to the individual (but not their spouse)—

(A) the applicable dollar amount under paragraph (3)(B)(i) shall be $150,000; and

(B) the amount applicable under paragraph (2)(A)(ii) shall be $10,000.

In the case of any taxable year beginning in a calendar year after 2006, each of the dollar amounts in paragraphs (3)(B)(i), (3)(B)(ii), and (7)(A) shall be increased by an amount equal to—

(A) such dollar amount, multiplied by

(B) the cost-of-living adjustment determined under section 1(f)(3) for the calendar year in which the taxable year begins, determined by substituting “calendar year 2005” for “calendar year 2016” in subparagraph (A)(ii) thereof.

(Added Pub. L. 93–406, title II, § 2002(a)(1), Sept. 2, 1974, 88 Stat. 958; amended Pub. L. 94–455, title XV, §§ 1501(b)(4), 1503(a), title XIX, §§  1901(a)(32), 1906(b)(13)(A), Oct. 4, 1976, 90 Stat. 1736, 1738, 1769, 1834; Pub. L. 95–600, title I, §§ 152(c), 156(c)(3), 157(a)(1), (b)(1), title VII, § 703(c)(1), Nov. 6, 1978, 92 Stat. 2798, 2803, 2939; Pub. L. 96–222, title I, § 101(a)(10)(D), (14)(B), Apr. 1, 1980, 94 Stat. 202, 204; Pub. L. 97–34, title III, §§ 311(a), 312(c)(1), 313(b)(2), Aug. 13, 1981, 95 Stat. 274, 284, 286; Pub. L. 97–248, title II, § 243(b)(2), Sept. 3, 1982, 96 Stat. 523; Pub. L. 97–448, title I, § 103(c)(1), (2), (3)(A), (4), (5), (12)(A), Jan. 12, 1983, 96 Stat. 2375–2377; Pub. L. 98–369, div. A, title I, § 147(c), title IV, §§ 422(d)(1), 491(d)(6)–(8), title V, § 529(a), (b), title VII, § 713(d)(2), July 18, 1984, 98 Stat. 687, 798, 849, 877, 957; Pub. L. 99–514, title III, § 301(b)(4), title XI, §§ 1101(a), (b)(1), (2)(A), 1102(f), 1103(a), 1108(g)(2), (3), 1109(b), title XV, § 1501(d)(1)(B), title XVIII, § 1875(c)(4), (6)(B), Oct. 22, 1986, 100 Stat. 2217, 2411, 2413, 2417, 2434, 2435, 2740, 2894, 2895; Pub. L. 100–647, title I, § 1011(a)(1), title VI, § 6009(c)(2), Nov. 10, 1988, 102 Stat. 3456, 3690; Pub. L. 101–239, title VII, §§ 7816(c)(1), 7841(c)(1), Dec. 19, 1989, 103 Stat. 2420, 2428; Pub. L. 102–318, title V, § 521(b)(4), July 3, 1992, 106 Stat. 310; Pub. L. 103–337, div. A, title XVI, § 1677(c), Oct. 5, 1994, 108 Stat. 3020; Pub. L. 104–188, title I, §§ 1421(b)(1), 1427(a)–(b)(2), 1807(c)(3), Aug. 20, 1996, 110 Stat. 1795, 1802, 1902; Pub. L. 105–34, title III, §§ 301(a), (b), 302(c), Aug. 5, 1997, 111 Stat. 824, 825, 829; Pub. L. 105–206, title VI, §§ 6005(a), 6018(f)(2), July 22, 1998, 112 Stat. 796, 823; Pub. L. 105–277, div. J, title IV, § 4003(a)(2)(B), Oct. 21, 1998, 112 Stat. 2681–908; Pub. L. 106–554, § 1(a)(7) [title III, § 316(d)], Dec. 21, 2000, 114 Stat. 2763, 2763A–644; Pub. L. 107–16, title IV, § 431(c)(1), title VI, §§ 601(a), 641(e)(2), June 7, 2001, 115 Stat. 68, 94, 120; Pub. L. 108–357, title I, § 102(d)(1), Oct. 22, 2004, 118 Stat. 1428; Pub. L. 109–227, § 2(a), May 29, 2006, 120 Stat. 385; Pub. L. 109–280, title VIII, §§ 831(a), 833(b), Aug. 17, 2006, 120 Stat. 1002, 1004; Pub. L. 110–245, title I, § 105(b)(2), June 17, 2008, 122 Stat. 1629; Pub. L. 113–22, § 1, July 25, 2013, 127 Stat. 492; Pub. L. 113–295, div. A, title II, § 221(a)(38), (39)(A), Dec. 19, 2014, 128 Stat. 4043; Pub. L. 115–97, title I, §§ 11002(d)(1)(S), 11051(b)(3)(C), 13305(b)(1), Dec. 22, 2017, 131 Stat. 2060, 2090, 2126; Pub. L. 115–141, div. U, title IV, § 401(a)(55), (56), Mar. 23, 2018, 132 Stat. 1186.)