The TSP record keeper maintains uniformed services accounts separately from civilian accounts. Therefore, a participant who has made contributions as a uniformed service member and as a civilian employee will have two TSP accounts: A uniformed services account and a civilian account.

(a) Agency automatic (1%) contributions. Each pay period, subject to the limitations in paragraph (c) of this section, any agency that employs an individual covered by FERS or BRS must make a contribution to that employee's tax-deferred balance for the benefit of the individual equal to 1% of the basic pay paid to such employee for service performed during that pay period. The employing agency must make Agency Automatic (1%) Contributions without regard to whether the employee elects to make employee contributions.

(b) Agency matching contributions. (1) Subject to the limitations in paragraph (c) of this section, any agency that employs an individual covered by FERS or BRS must make a contribution to the employee's tax-deferred balance for the benefit of the employee equal to the sum of:

(i) The amount of the employee's contribution that does not exceed 3% of the employee's basic pay for such pay period; and

(ii) One-half of such portion of the amount of the employee's contributions that exceeds 3% but does not exceed 5% of the employee's basic pay for such period.

(2) A uniformed service member is not entitled to matching contributions for contributions deducted from special or incentive pay (including bonuses).

(c) Timing of employing agency contributions. (1) An employee appointed or reappointed to a position covered by FERS is immediately eligible to receive employing agency contributions.

(2) A uniformed service member covered by BRS will be eligible to receive employing agency contributions pursuant to the following rules:

(i) A uniformed service member who first entered service on or after January 1, 2018 is entitled to:

(A) Agency automatic (1%) contributions beginning in the first full pay period following the date that is 60 days after the uniformed service member's PEBD and ending in the first full pay period following the date that is 26 years after the uniformed service member's PEBD.

(B) Agency matching contributions beginning in the first full pay period following the date that is 2 years and one day after the uniformed service member's PEBD and ending in the first full pay period following the date that is 26 years after the uniformed service member's PEBD.

(ii) A uniformed service member who elects to enroll in BRS is entitled to:

(A) Agency automatic (1%) contributions beginning in the first full pay period following the date the uniformed service member enrolled in BRS and ending in the first full pay period following the date that is 26 years after the Uniformed service member's PEBD.

(B) Agency matching contributions beginning in the first full pay period following the date the uniformed service member enrolled in BRS and ending in the first full pay period following the date that is 26 years after the uniformed service member's PEBD.

(a) Traditional contributions. A participant may make traditional contributions.

(b) Roth contributions. A participant may make Roth contributions in addition to or in lieu of traditional contributions.

(c) Contributions from tax-exempt pay. A uniformed service member who receives pay which is exempt from taxation under 26 U.S.C. 112 will have contributions deducted from such pay and made to his or her traditional or Roth balance in accordance with an election made under paragraph (a) or (b) of this section.

(a) Civilian employees may elect to contribute a percentage of basic pay or a dollar amount, subject to the limits described in § 1600.22. The election must be expressed in whole percentages or whole dollar amounts. A participant may contribute a percentage for one type of contribution and a dollar amount for another type of contribution. If a participant elects to contribute a dollar amount to his or her traditional balance and a dollar amount to his or her Roth balance, but the total dollar amount elected is more than the amount available to be deducted from the participant's basic pay, the employing agency will deduct traditional contributions first and Roth contributions second.

(b) Uniformed services members may elect to contribute from basic pay and, if they elect to contribute from basic pay, special or incentive pay (including bonus pay) subject to the limits described in § 1600.22. The election may be expressed as a whole percentage, a dollar amount, or both as determined by the member's service.

A participant's employee contributions are subject to the following limitations:

(a) The maximum employee contribution will be limited only by the provisions of the Internal Revenue Code.

(b) A participant may make traditional contributions and Roth contributions during the same year, but the combined total amount of the participant's tax-deferred employee contributions and Roth contributions cannot exceed the applicable Internal Revenue Code elective deferral limit for the year.

(c) A participant who has both a civilian and a uniformed services account can make employee contributions to both accounts, but the combined total amount of the participant's tax-deferred employee contributions and Roth contributions made to both accounts cannot exceed the Internal Revenue Code elective deferral limit for the year.

(a) A participant may make traditional catch-up contributions or Roth catch-up contributions from basic pay at any time during the calendar year if he or she:

(1) Is at least age 50 by the end of the calendar year;

(2) Is making employee contributions at a rate that will result in the participant making the maximum employee contributions permitted under § 1600.22; and

(3) Does not exceed the annual limit on catch-up contributions contained in section 414(v) the Internal Revenue Code.

(b) [Reserved]

(c) A participant may make traditional catch-up contributions and Roth catch-up contributions during the same year, but the combined total amount of catch-up contributions of both types cannot exceed the applicable Internal Revenue Code catch-up contribution limit for the year.

(d) A participant who has both a civilian account and a uniformed services account may make catch-up contributions to both accounts, but the combined total amount of catch-up contributions to both accounts cannot exceed the Internal Revenue Code catch-up contribution limit for the year.

(e) A participant cannot make catch-up contributions to his or her traditional balance from pay which is exempt from taxation under 26 U.S.C. 112.

(f) A participant may make catch-up contributions to his or her Roth balance from pay which is exempt from taxation under 26 U.S.C. 112.

(g) A participant cannot make catch-up contributions from special or incentive pay (including bonus pay).

(h) [Reserved]