months without regard to the amendments made by this Act. II Strengthening the Trust Fund 201. Determining wages and self-employment income above contribution and benefit base after 2024 (a) Determination of wages above contribution and benefit base after 2024 (1) Amendments to the Internal Revenue Code of 1986 (A) Repeal of present law limitation Section 3121(a) of the Internal Revenue Code of 1986 is amended by striking paragraph (1). (B) Limitation on amount of wages Section 3121 of the Internal Revenue Code of 1986 is amended by adding at the end the following: (aa) Limitation on amount of wages (1) In general In the case of any calendar year in which the contribution and benefit base (as determined under section 230 of the Social Security Act) is less than $400,000, for purposes of the taxes imposed by sections 3101(a) and 3111(a), the term wages does not include that part of the remuneration which, after remuneration equal to such contribution and benefit base with respect to employment has been paid to an individual by an employer during the calendar year with respect to which such contribution and benefit base is effective, is paid to such individual by such employer during the calendar year. The preceding sentence shall not apply to that part of the remuneration paid to an individual after remuneration of $400,000 with respect to employment has been paid to such individual by an employer (or any person related to, or acting on behalf of, such employer, as determined by the Secretary) during the calendar year. (2) Successor employer If an employer (hereinafter referred to as successor employer) during any calendar year, acquires substantially all the property used in a trade or business of another employer (hereinafter referred to as a predecessor), or used in a separate unit of a trade or business of a predecessor, and immediately after the acquisition employs in his trade or business an individual who immediately prior to the acquisition was employed in the trade or business of such predecessor, then,