; or . (B) Phaseout Section 211(b) of the Social Security Act ( 42 U.S.C. 411(b) ) is amended by adding at the end the following: Paragraph (1) shall apply only to taxable years beginning in calendar years for which the contribution and benefit base (as determined under section 230) is less than $250,000. . (c) Special rule for wages from multiple employers which total in excess of $250,000 (1) In general Subchapter A of chapter 21 of the Internal Revenue Code of 1986 is amended by adding at the end the following new section: 3103. Special rules for remuneration from multiple employers (a) In general In the case of an employee receiving wages from more than one employer during a calendar year, there is hereby imposed a tax on such employee (for the last taxable year beginning in the calendar year the wages are received) equal to the excess (if any) of— (1) the tax that would have been imposed by section 3101(a) if such wages had been received from one employer, over (2) the aggregate tax imposed by such section with respect to such wages. (b) Coordination with special refund provision No credit shall be determined under section 31(b) with respect to any employee for any taxable year unless the amount described in subsection (a)(1) with respect to wages received during the calendar year in which such taxable year begins exceeds the amount described in subsection (a)(2) with respect to such wages, and the amount of such credit so determined shall not exceed such excess. (c) Wages For purposes of this section, the term wages shall have the same meaning as when used in section 1402(b). (d) Application to tier I railroad retirement tax In the case of compensation (as defined in section 3231(e)), for purposes of applying subsections (a) and (b), the reference to the tax that would have been imposed by section 3101(a) shall be treated as including a reference to so much of the tax that would have been imposed on such compensation under section 3201(a) or 3211(a) (or would have been so imposed but for paragraph (2) of