Maryland State Personnel and Pensions Section 22-214
§ 22-214.
  (a)   (1)   This subsection applies only to a member who is subject to Selection A (Additional member contributions).
    (2)   For a member whose membership started on or before June 30, 1973, the contribution rate as a percent of a member's earnable compensation is the lesser of:
      (i)   2% plus the contribution rate adopted by the Board of Trustees and in effect when membership began; or
      (ii)   7%.
    (3)   For a member whose membership started on or after July 1, 1973, the contribution rate is 7% of a member's earnable compensation.
    (4)   For a member who under § 22-308(b)(2) of this title elects to receive full-time service credit for regular part-time employment, the contribution rate is 7% of the compensation the member would have earned had the member been a full-time employee.
  (b)   (1)   This subsection applies to a member who is subject to Selection B (Limited cost-of-living adjustment).
    (2)   For a member whose membership started on or before June 30, 1973, the contribution rate as a percent of a member's earnable compensation is the lesser of:
      (i)   the contribution rate adopted by the Board of Trustees and in effect when membership began; or
      (ii)   5%.
    (3)   For a member whose membership started on or after July 1, 1973, the contribution rate is 5% of a member's earnable compensation.
    (4)   For a member who elects under § 22-308(b)(2) of this title to receive full-time service credit for regular part-time employment, the contribution rate is 5% of the compensation the member would have earned had the member been a full-time employee.
  (c)   (1)   This subsection applies to a member who is subject to Selection C (Combination formula).
    (2)   A member's contribution rate is as provided in § 23-212 of this article.