; ; and (C) by adding at the end the following new subsection: (l) For purposes of subsection (a)(1)(J), the applicable percentage for a calendar year shall be equal to— (1) for 2025, 80 percent, (2) for 2026 through 2028, the applicable percentage under this subsection for the previous year, decreased by 20 percentage points, and (3) for 2029 and each year thereafter, 0 percent. . (3) Effective date The amendments made by this subsection shall apply with respect to remuneration paid in calendar years after 2024. (b) Determination of taxable self-Employment income above contribution and benefit base after 2024 (1) Amendments to the Internal Revenue Code of 1986 Section 1402 of the Internal Revenue Code of 1986 is amended— (A) in subsection (b)(1), by striking that part of the net earnings and all that follows through minus and inserting the following: an amount equal to the applicable percentage (as determined under subsection (d)(2)) of that part of the net earnings from self-employment which is in excess of the difference (not to be less than 0) between (i) an amount equal to the contribution and benefit base (as determined under section 230 of the Social Security Act) which is effective for the calendar year in which such taxable year begins, and ; and (B) in subsection (d)— (i) by striking (d) Employee and wages.— The term and inserting the following: (d) Rules and definitions (1) Employee and wages The term