; and (B) by inserting after subsection (b) the following new subsection: (c) Additional tier 1 tax In addition to the taxes imposed by the preceding subsections, there is hereby imposed on the income of each employee representative a tax equal to 4 percent of additional compensation (as defined under section 3201(c)) received by such employee representative during any calendar year beginning after December 31, 2018, for services rendered by such employee representative. . (3) Railroad employers Section 3221 of the Internal Revenue Code of 1986 is amended by adding at the end the following new subsection: (e) Additional tier 1 tax In addition to the taxes imposed by subsections (a) and (b), there is hereby imposed on every employer an excise tax, with respect to having individuals in his employ, equal to 2 percent of additional compensation (as defined under section 3201(c)) paid by such employer during any calendar year beginning after December 31, 2018, for services rendered to such employer. . (4) Social Security Equivalent Benefit Account Section 15A(b)(1)(A) of the Railroad Retirement Act of 1974 ( 45 U.S.C. 231n–1(b)(1)(A) ) is amended by striking sections 3201(a), 3211(a)(1), and 3221(a) of the Railroad Retirement Tax Act and inserting subsections (a) and (c) of section 3201, subsections (a) and (c) of section 3211, and subsections (a) and (e) of section 3221 of the Internal Revenue Code of 1986 . (e) Amendments to the Social Security Act (1) Transfer of amounts to Federal Old-Age and Survivors Insurance Trust Fund Section 201 of the Social Security Act ( 42 U.S.C. 401 ) is amended— (A) in subsection (b)(3)— (i) by inserting and additional wages (as defined in section 1402(c) of such Code) after section 3121 of such Code) ; (ii) by inserting and additional wages after such wages ; (iii) by inserting and additional wages after which wages ; and (iv) by inserting and additional wages after records of wages