; and (ii) 3 years. . (b) Effective date The amendment made by subsection (a) shall take effect on January 1, 2030. 4. Progressive indexing of benefits for old-age, wife’s, and husband’s insurance benefits (a) In general Section 215(a) of the Social Security Act ( 42 U.S.C. 415(a) ) is amended— (1) by striking The in paragraph (1)(A) and inserting In the case of any benefit other than an applicable benefit to which paragraph (2) applies, the ; and (2) by redesignating paragraphs (2) through (7) as paragraphs (3) through (8), respectively, and by inserting after paragraph (1) the following new paragraph: (2) (A) In the case of an applicable benefit with respect to any individual who initially becomes eligible for old-age insurance benefits or who dies (before becoming eligible for such benefits) in calendar year 2027 or later, the primary insurance amount of the individual shall be equal to the sum of— (i) 90 percent of the individual's average indexed monthly earning (determined under subsection (b)) to the extent that such earnings do not exceed the amount established for purposes of paragraph (1)(A)(i) by paragraph (1)(B); (ii) 32 percent of the individual's average indexed monthly earnings to the extent that such earnings exceed the amount established for purposes of paragraph (1)(A)(i) by paragraph (1)(B) but do not exceed the amount established for purposes of this clause by subparagraph (B); (iii) 32 percent (reduced as provided in subparagraph (C)) of the individual's average indexed monthly earnings to the extent that such earnings exceed the amount established for purposes of clause (ii) but do not exceed the amount established for purposes of paragraph (1)(A)(ii) by paragraph (1)(B)