; and (4) by striking hereafter in this paragraph and in subsection (d)(3) and inserting in this paragraph, paragraphs (8) and (9), and subsection (d)(3) . (c) Effective date The amendments made by this section shall apply with respect to monthly insurance benefits payable on or after January 1, 2025. 3. Benefit calculation during transition period (a) In general Section 215(a) of the Social Security Act ( 42 U.S.C. 415(a) ), as amended by section 2, is further amended by inserting after paragraph (8) the following: (9) In the case of an individual whose primary insurance amount would be computed under paragraph (1) of this subsection— (A) who first becomes eligible for an old-age or disability insurance benefit after 2024 and before 2068, (B) who subsequently becomes entitled to such benefit, and (C) who has earnings derived from noncovered service performed in a year after 1977, the primary insurance amount of such individual shall be the higher of the amount computed or recomputed under paragraph (7) without regard to this paragraph or the amount that would be computed or recomputed under paragraph (8) if the individual were an individual described in subparagraph (A) of such paragraph. . (b) Conforming amendment Section 215(a)(7)(A) of such Act ( 42 U.S.C. 415(a)(7)(A) ), as amended by section 2(b), is further amended by striking shall be computed or recomputed and inserting shall, subject to paragraph (9), be computed or recomputed . (c) Effective date The amendments made by this section shall apply with respect to monthly insurance benefits payable on or after January 1, 2025. 4. Additional monthly payment for individuals whose benefit amount is reduced by the windfall elimination provision (a) In general Section 215(a) of such Act ( 42 U.S.C. 415(a) ), as amended by sections 2 and 3, is further amended by adding at the end the following: (10) (A) For any month beginning at least 270 days after the date of enactment of the Equal Treatment of Public Servants Act of 2023 , the Commissioner of Social Security