Pub. L. 100-647, tit. VIII, subtit. A, sec. 8018
CERTAIN EMPLOYER PENSION CONTRIBUTIONS NOT INCLUDED IN FICA WAGE BASE.
SEC. 8018. CERTAIN EMPLOYER PENSION CONTRIBUTIONS NOT INCLUDED IN FICA WAGE BASE. In the case of any State (within the meaning of section 3121(e)(1) of the Internal Revenue Code of 1986) or political subdivision thereof which received a letter ruling of the Internal Revenue Service issued after December 31, 1983, and before the date of the enactment of this Act maintaining that any amount treated as an employer contribution under section 414(h)(2) of the Internal Revenue Code of 1986 is excluded from the definition of “wages” for purposes of tax liability under section 3121(v)(1)(B) of such Code, such State or political subdivision shall be relieved of any liability for taxes under such section 3121(v)(1)(B) which, in good faith reliance on such letter ruling, were not paid and which would otherwise have been required to be paid (but for this section) on or before the earlier of the date of the enactment of this Act or the date of the receipt of a notice of revocation from the Internal Revenue Service of such letter ruling.