215(i)(1)(B) of the Social Security Act ( 42 U.S.C. 415(i)(1)(B) )) ending on or after September 30 of the second calendar year following the calendar year in which this Act is enacted. II Contribution and benefit fairness 201. Determination of wages and self-employment income above contribution and benefit base after 2017 (a) Determination of wages above contribution and benefit base after 2017 (1) Amendments to the Internal Revenue Code of 1986 Section 3121 of the Internal Revenue Code of 1986 is amended— (A) in subsection (a)(1), by inserting the applicable percentage (determined under subsection (c)(1)) of before that part of the remuneration