The Internal Revenue Code of 1986, referred to in subsecs. (a)(3), (d), and (j), is classified generally to Title 26, Internal Revenue Code.

Section 301 of the Federal Employees’ Retirement System Act of 1986 [Pub. L. 99–335], referred to in subsec. (b)(3), is set out as a note under section 8331 of this title.

The date of enactment of the Thrift Savings Plan Open Elections Act of 2004, referred to in subsec. (b)(4)(C)(ii), is the date of enactment of Pub. L. 108–469, which was approved Dec. 21, 2004.

Section 204 of the Federal Employees’ Retirement Contribution Temporary Adjustment Act of 1983 [Pub. L. 98–168], referred to in subsec. (c)(3)(B)(iii), is set out as a note under section 8331 of this title.

2004—Subsec. (b)(1)(A). Pub. L. 108–469, § 1(b), designated existing provisions as cl. (i), substituted “may” for “shall be afforded a reasonable period every 6 months to elect to”, struck out second sentence which read “An election to make such contributions shall remain in effect until modified or terminated.”, and added cl. (ii).

Subsec. (b)(2)(A), (C). Pub. L. 108–469, § 1(d)(2)(A), (B), substituted “until the date” for “until the second period”.

Subsec. (b)(2)(D). Pub. L. 108–469, § 1(d)(2)(C), substituted “as provided” for “other than during a period afforded”.

Subsec. (b)(4)(C). Pub. L. 108–469, § 1(c), designated existing provisions as cl. (i) and added cl. (ii).

2003—Subsec. (k). Pub. L. 108–177 added subsec. (k).

2002—Subsec. (a)(3). Pub. L. 107–304 added par. (3).

2000—Subsec. (a). Pub. L. 106–554 designated existing provisions as par. (1), substituted “the maximum percentage of such employee’s or Member’s basic pay for such pay period allowable under paragraph (2).” for “10 percent of such individual’s basic pay for such period.”, and added par. (2).

Pub. L. 106–361, § 2(b)(1), substituted “(b)” for “(b)(1)” and “Contributions under this subsection pursuant to such an election shall, with respect to each pay period for which such election remains in effect, be made in accordance with a program of regular contributions provided in regulations prescribed by the Executive Director” for “Contributions made under this subsection during any 6-month period for which an election period is provided under subsection (b)(1) shall be made each pay period during such 6-month period pursuant to a program of regular contributions provided in regulations prescribed by the Executive Director”.

Subsec. (b)(1)(B). Pub. L. 106–361, § 2(b)(2), inserted “(or any election allowable by virtue of paragraph (4))” after “subparagraph (A)”.

Subsec. (b)(3). Pub. L. 106–361, § 2(b)(3), substituted “An” for “Notwithstanding paragraph (2)(A), an”.

Subsec. (b)(4). Pub. L. 106–361, § 2(a), amended par. (4) generally. Prior to amendment, par. (4) read as follows:

“(A) Notwithstanding paragraph (2)(A), an employee or Member who is an employee or Member on January 1, 1987, and continues as an employee or Member without a break in service through April 1, 1987, may make the first election for the purpose of subsection (a) during the election period prescribed for such purpose by the Executive Director. The Executive Director shall prescribe an election period for such purpose which shall commence on April 1, 1987. An election by such an employee or Member during that election period shall be effective on the first day of the employee’s or Member’s first pay period which begins after the date on which the employee or Member makes that election.

“(B) Notwithstanding subsection (a), the maximum amount that an employee or Member may contribute during any pay period which begins on or after April 1, 1987, and before October 1, 1987, pursuant to an election made during the election period provided under subparagraph (A) is the amount equal to 15 percent of such individual’s basic pay for such pay period.”

Subsec. (j). Pub. L. 106–361, § 1(a), added subsec. (j).

1996—Subsec. (e). Pub. L. 104–186 substituted “Chief Administrative Officer of the House of Representatives, the Chief Administrative Officer may pay from the applicable accounts” for “Clerk of the House of Representatives, the Clerk may pay from the contingent fund”.

Subsec. (f). Pub. L. 104–316 substituted “Secretary of the Treasury” for “Comptroller General of the United States”.

Subsec. (g)(5). Pub. L. 104–93 added par. (5).

1994—Subsec. (d). Pub. L. 103–353, § 5(e)(3), substituted “Internal Revenue Code of 1986” for “Internal Revenue Code of 1954”.

Subsec. (i). Pub. L. 103–353, § 4(c), added subsec. (i).

1988—Subsec. (c)(1)(A). Pub. L. 100–238, § 121(a), substituted “At the time prescribed by the Executive Director, but no later than 12 days after the end of” for “At the end of” and “within such time as the Executive Director may prescribe with respect to succeeding pay periods (but no later than 12 days after the end of each such pay period)” for “at the end of each succeeding pay period”.

Subsec. (c)(2)(A). Pub. L. 100–238, § 121(b), substituted “within such time as the Executive Director may prescribe, but no later than 12 days after the end of each such pay period” for “at the end of such pay period”.

Subsec. (d). Pub. L. 100–238, § 114, inserted at end “However, no contribution made under subsection (c)(3) shall be subject to, or taken into account, for purposes of the preceding sentence.”

Subsec. (g)(1). Pub. L. 100–238, § 115(1), substituted “Except as otherwise provided in this subsection” for “Except as provided in paragraphs (2) and (3)”.

Subsec. (g)(4). Pub. L. 100–238, § 115(2), added par. (4).

1987—Subsec. (b)(4)(A). Pub. L. 100–20 substituted “Notwithstanding paragraph (2)(A), an employee or Member who is an employee or Member on January 1, 1987, and continues as an employee or Member without a break in service through April 1, 1987, may make the first election for the purpose of subsection (a) during the election period prescribed for such purpose by the Executive Director” for “Notwithstanding paragraph (2)(A), an employee or Member who is an employee or Member on January 1, 1987, continues as an employee or Member without a break in service through April 1, 1987, and has creditable service described in section 8411 (b)(2) of this title may make the first election for the purpose of subsection (a) during the election period prescribed for such purpose by the Executive Director”.

1986—Subsec. (b)(4). Pub. L. 99–509, § 6001(a)(1), designated existing provisions as subpar. (A), inserted “continues as an employee or Member without a break in service through April 1, 1987,” substituted “April 1, 1987” for “January 1, 1987”, substituted “the date on which the employee or Member makes that election” for “the last day of that election period”, and added subpar. (B).

Subsec. (c)(1). Pub. L. 99–509, § 6001(a)(2)(A), designated existing provisions as subpar. (A) and added subpars. (B) and (C).

Subsec. (c)(2)(C). Pub. L. 99–509, § 6001(a)(2)(B), added subpar. (C).

Amendment by Pub. L. 107–304 effective as of the earliest practicable date determined by the Executive Director in regulations, see section 1(c) of Pub. L. 107–304, set out as a note under section 8351 of this title.

Pub. L. 106–361, § 1(b), Oct. 27, 2000, 114 Stat. 1400, provided that: “The amendment made by this section [amending this section] shall take effect at the earliest practicable date after September 30, 2000, as determined by the Executive Director in regulations.” [Final regulations implementing the amendments became effective May 2, 2001. See 66 F.R. 22088.]

Pub. L. 106–361, § 2(c)(1), Oct. 27, 2000, 114 Stat. 1401, provided that: “The amendments made by this section [amending this section and sections 8439, 8440a, and 8440d of this title] shall take effect at the earliest practicable date after September 30, 2000, as determined by the Executive Director in regulations.” [Final regulations implementing the amendments became effective May 2, 2001. See 66 F.R. 22088.]

Section 304(b) of Pub. L. 104–93 provided that: “The amendment made by subsection (a) [amending this section] shall apply to offenses upon which the requisite annuity forfeitures are based occurring on or after the date of the enactment of this Act [Jan. 6, 1996].”

Amendment by section 4(c) of Pub. L. 103–353 effective Oct. 13, 1994, and applicable to any employee whose release from military service, discharge from hospitalization, or other similar event making the individual eligible to seek restoration or reemployment under chapter 43 of Title 38, Veterans’ Benefits, occurs on or after Aug. 2, 1990, with special rules for applying amendment to employees restored or reemployed before effective date, see section 4(e), (f) of Pub. L. 103–353, set out as an Effective Date note under section 8432b of this title.

Amendment by section 5(e)(3) of Pub. L. 103–353 effective with respect to reemployments initiated on or after the first day after the 60-day period beginning Oct. 13, 1994, with transition rules, see section 8 of Pub. L. 103–353, set out as an Effective Date note under section 4301 of Title 38.

Section 6001(f) of Pub. L. 99–509 provided that: “This section [amending this section and section 8472 of this title, enacting provisions set out as notes under this section, and amending provisions set out as a note under section 8351 of this title], other than subsection (d) [set out below], and the amendments made by this section shall take effect on January 1, 1987.”

Section 6001(d) of Pub. L. 99–509 provided that: “The Executive Director of the Federal Retirement Thrift Investment Board may prescribe regulations to carry out subsections (a), (b), and (c) [amending this section, enacting provisions set out as notes under this section, and amending provisions set out as a note under section 8351 of this title] and the amendments made by subsections (a) and (b).”

Pub. L. 106–361, § 2(c)(2), Oct. 27, 2000, 114 Stat. 1401, provided that: “Notwithstanding any other provision of this section [amending this section and sections 8439, 8440a, and 8440d of this title and enacting provisions set out as a note under this section], until the amendments made by this section take effect [see Effective Date of 2000 Amendment note above], title 5, United States Code, shall be applied as if this section had not been enacted.”

Pub. L. 100–238, title I, § 125, Jan. 8, 1988. 101 Stat. 1756, as amended by Pub. L. 107–347, title II, § 209(g)(3), Dec. 17, 2002, 116 Stat. 2932; Pub. L. 110–234, title VII, § 7101(b)(6), May 22, 2008, 122 Stat. 1214; Pub. L. 110–246, § 4(a), title VII, § 7101(b)(6), June 18, 2008, 122 Stat. 1664, 1975, provided that:

“(a) Definitions.—For purposes of this section—

“(1) the term ‘Executive Director’ means the Executive Director under section 8474 of title 5, United States Code; and

“(2) the term ‘Thrift Savings Plan’ refers to the program under subchapter III of chapter 84 of title 5, United States Code.

“(b) Regulations.—

“(1) In general.—The Executive Director shall prescribe regulations relating to participation in the Thrift Savings Plan by an individual described in subsection (c).

“(2) Specific matters to be included.—Under the regulations—

“(A) in computing a percentage of basic pay to determine an amount to be contributed to the Thrift Savings Fund, the rate of basic pay to be used shall be the same as that used in computing any amount which the individual involved is otherwise required, as a condition for participating in the Civil Service Retirement System or the Federal Employees’ Retirement System (as the case may be), to contribute to the Civil Service Retirement and Disability Fund; and

“(B) an employing authority which would not otherwise make contributions to the Thrift Savings Fund shall be allowed, with respect to any individual under subsection (c) who is serving under such authority, and at the sole discretion of such authority, to make any contributions on behalf of such individual which would be permitted or required under the provisions of section 8432 (c) of title 5, United States Code, if such authority were the individual’s employing agency under such provisions.

“(c) Applicability.—This section applies with respect to—

“(1) any individual participating in the Civil Service Retirement System or the Federal Employees’ Retirement System as—

“(A) an individual who has entered on approved leave without pay to serve as a full-time officer or employee of an organization composed primarily of employees (as defined by section 8331 (1) or 8401 (11) of title 5, United States Code);

“(B) an individual assigned from a Federal agency to a State or local government under subchapter VI of chapter 33 of title 5, United States Code;

“(C) an individual appointed or otherwise assigned to one of the cooperative extension services, as defined by section 1404 of the National Agricultural Research, Extension, and Teaching Policy Act of 1977 (7 U.S.C. 3103); or

“(D) an individual assigned from a Federal agency to a private sector organization under chapter 37 of title 5, United States Code; and

“(2) any individual who is participating in the Civil Service Retirement System as a result of a provision of law described in section 8347 (o).

“(d) Effective Date.—

“(1) In general.—Except as provided in paragraph (2), the regulations prescribed under this section shall become effective in accordance with the provisions of such regulations.

“(2) Exception.—The regulations prescribed under this section shall, with respect to individuals under subsection (c)(1)(C), be effective as of January 1, 1987.”

Section 6001(a)(3) of Pub. L. 99–509 directed that contributions made to Thrift Savings Fund under 5 U.S.C. 8432 (c)(1)(B), (C) and (3) be made as soon as practicable during the 15-day period which began on Apr. 1, 1987.

Section 6001(c) of Pub. L. 99–509 provided that the requirement that contributions be made for a 6-month period after an election, as provided in 5 U.S.C. 8432 (a), did not apply to contributions made pursuant to an election made during the period provided in 5 U.S.C. 8432 (b)(4) or 206 (b) of the Federal Employees’ Retirement System Act of 1986; that the first election period prescribed under 5 U.S.C. 8432 (b)(1) commence on July 1, 1987; and that each employee or Member who made such an election could make an election under 5 U.S.C. 8432 (b)(1) during the election period that began on July 1, 1987.

Section 312 of Pub. L. 99–335 directed Executive Director of Federal Retirement Thrift Investment Board to transmit to Congress, not later than Jan. 1, 1988, a plan to afford Federal employees and Members of Congress who make less than maximum amount of authorized contributions to Thrift Savings Fund in any period an opportunity to contribute to such Fund, in a later period, the excess of such amount over the amount contributed during such period, with plan to include such recommendations for legislation as Executive Director considered appropriate.