Old group.

(i) Old group. Under the authority of section 7805(b), the Internal Revenue Service will treat an old group as a brother-sister controlled group corporations for purposes of applying sections 401, 404(a), 408(k), 409A, 410, 411, 412, 414, 415, and 4971 of the Internal Revenue Code (Code) and sections 202, 203, 204, and 302 of the Employment Retirement Income Security Act of 1974 (ERISA) in a plan year or taxable year beginning before March 2, 1988, to the extent necessary to prevent an adverse effect on any old member (or any other corporation), or on any plan or other entity described in such sections (including plans, etc., of corporations not part of such old group), that would result solely from the retroactive effect of the amendment to this section by TD 8179. An adverse effect includes the disqualification of a plan or the disallowance of a deduction or credit for a contribution to a plan. The Internal Revenue Service, however, will not treat an old member as a member of an old group to the extent that such treatment will have an adverse effect on that old member.


26 CFR § 1.1563-1

Scoping language

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