1. (a) General rule If a partnership return is filed by an entity for a taxable year but it is determined that the entity is not a partnership for such year, then, to the extent provided in regulations, the provisions of this subchapter are hereby extended in respect of such year to such entity and its items and to persons holding an interest in such entity.
2. (b) Similar rules in certain cases If a partnership return is filed for any taxable year but it is determined that there is no entity for such taxable year, to the extent provided in regulations, rules similar to the rules of subsection (a) shall apply.

(Added Pub. L. 98–369, div. A, title VII, § 714(p)(1), July 18, 1984, 98 Stat. 964; amended Pub. L. 104–188, title I, § 1307(c)(3)(B), Aug. 20, 1996, 110 Stat. 1782.)

Amendments 1996—Subsec. (b). Pub. L. 104–188 reenacted heading without change and amended text generally. Prior to amendment, text read as follows: “If for any taxable year—

“(1) an entity files a return as an S corporation but it is determined that the entity was not an S corporation for such year, or

“(2) a partnership return or S corporation return is filed but it is determined that there is no entity for such taxable year,

then, to the extent provided in regulations, rules similar to the rules of subsection (a) shall apply.”

Effective Date of 1996 Amendment Amendment by Pub. L. 104–188 applicable to taxable years beginning after Dec. 31, 1996, see section 1317(a) of Pub. L. 104–188, set out as a note under section 641 of this title.

Effective Date Section effective as if included in the provision of the Tax Equity and Fiscal Responsibility Act of 1982, Pub. L. 97–248, to which such amendment relates, see section 715 of Pub. L. 98–369, set out as an Effective Date of 1984 Amendment note under section 31 of this title.