Definitions and special rules

26 U.S.C. § 1563
in effect
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(a) Controlled group of corporationsFor purposes of this part, the term “controlled group of corporations” means any group of—(1) Parent-subsidiary controlled groupOne or more chains of corporations connected through stock ownership with a common parent corporation if—(A) stock possessing at least 80 percent of the total combined voting power of all classes of stock entitled to vote or at least 80 percent of the total value of shares of all classes of stock of each of the corporations, except the common parent corporation, is owned (within the meaning of subsection (d)(1)) by one or more of the other corporations; and (B) the common parent corporation owns (within the meaning of subsection (d)(1)) stock possessing at least 80 percent of the total combined voting power of all classes of stock entitled to vote or at least 80 percent of the total value of shares of all classes of stock of at least one of the other corporations, excluding, in computing such voting power or value, stock owned directly by such other corporations. (2) Brother-sister controlled groupTwo or more corporations if 5 or fewer persons who are individuals, estates, or trusts own (within the meaning of subsection (d)(2)) stock possessing more than 50 percent of the total combined voting power of all classes of stock entitled to vote or more than 50 percent of the total value of shares of all classes of stock of each corporation, taking into account the stock ownership of each such person only to the extent such stock ownership is identical with respect to each such corporation. (3) Combined groupThree or more corporations each of which is a member of a group of corporations described in paragraph (1) or (2), and one of which—(A) is a common parent corporation included in a group of corporations described in paragraph (1), and also (B) is included in a group of corporations described in paragraph (2). (4) Certain insurance companiesTwo or more insurance companies subject to taxation under section 801 which are members of a controlled group of corporations described in paragraph (1), (2), or (3). Such insurance companies shall be treated as a controlled group of corporations separate from any other corporations which are members of the controlled group of corporations described in paragraph (1), (2), or (3). (b) Component member(1) General ruleFor purposes of this part, a corporation is a component member of a controlled group of corporations on a December 31 of any taxable year (and with respect to the taxable year which includes such December 31) if such corporation—(A) is a member of such controlled group of corporations on the December 31 included in such year and is not treated as an excluded member under paragraph (2), or (B) is not a member of such controlled group of corporations on the December 31 included in such year but is treated as an additional member under paragraph (3). (2) Excluded membersA corporation which is a member of a controlled group of corporations on December 31 of any taxable year shall be treated as an excluded member of such group for the taxable year including such December 31 if such corporation—(A) is a member of such group for less than one-half the number of days in such taxable year which precede such December 31, (B) is exempt from taxation under section 501(a) (except a corporation which is subject to tax on its unrelated business taxable income under section 511) for such taxable year, (C) is a foreign corporation subject to tax under section 881 for such taxable year, (D) is an insurance company subject to taxation under section 801 (other than an insurance company which is a member of a controlled group described in subsection (a)(4)), or (E) is a franchised corporation, as defined in subsection (f)(4). (3) Additional membersA corporation which—(A) was a member of a controlled group of corporations at any time during a calendar year, (B) is not a member of such group on December 31 of such calendar year, and (C) is not described, with respect to such group, in subparagraph (B), (C), (D), or (E) of paragraph (2), shall be treated as an additional member of such group on December 31 for its taxable year including such December 31 if it was a member of such group for one-half (or more) of the number of days in such taxable year which precede such December 31. (4) Overlapping groupsIf a corporation is a component member of more than one controlled group of corporations with respect to any taxable year, such corporation shall be treated as a component member of only one controlled group. The determination as to the group of which such corporation is a component member shall be made under regulations prescribed by the Secretary which are consistent with the purposes of this part. (c) Certain stock excluded(1) General ruleFor purposes of this part, the term “stock” does not include—(A) nonvoting stock which is limited and preferred as to dividends, (B) treasury stock, and (C) stock which is treated as “excluded stock” under paragraph (2). (2) Stock treated as “excluded stock”(A) Parent-subsidiary controlled groupFor purposes of subsection (a)(1), if a corporation (referred to in this paragraph as “parent corporation”) owns (within the meaning of subsections (d)(1) and (e)(4)), 50 percent or more of the total combined voting power of all classes of stock entitled to vote or 50 percent or more of the total value of shares of all classes of stock in another corporation (referred to in this paragraph as “subsidiary corporation”), the following stock of the subsidiary corporation shall be treated as excluded stock—(i) stock in the subsidiary corporation held by a trust which is part of a plan of deferred compensation for the benefit of the employees of the parent corporation or the subsidiary corporation, (ii) stock in the subsidiary corporation owned by an individual (within the meaning of subsection (d)(2)) who is a principal stockholder or officer of the parent corporation. For purposes of this clause, the term “principal stockholder” of a corporation means an individual who owns (within the meaning of subsection (d)(2)) 5 percent or more of the total combined voting power of all classes of stock entitled to vote or 5 percent or more of the total value of shares of all classes of stock in such corporation, (iii) stock in the subsidiary corporation owned (within the meaning of subsection (d)(2)) by an employee of the subsidiary corporation if such stock is subject to conditions which run in favor of such parent (or subsidiary) corporation and which substantially restrict or limit the employee’s right (or if the employee constructively owns such stock, the direct owner’s right) to dispose of such stock, or (iv) stock in the subsidiary corporation owned (within the meaning of subsection (d)(2)) by an organization (other than the parent corporation) to which section 501 (relating to certain educational and charitable organizations which are exempt from tax) applies and which is controlled directly or indirectly by the parent corporation or subsidiary corporation, by an individual, estate, or trust that is a principal stockholder (within the meaning of clause (ii)) of the parent corporation, by an officer of the parent corporation, or by any combination thereof. (B) Brother-sister controlled groupFor purposes of subsection (a)(2), if 5 or fewer persons who are individuals, estates, or trusts (referred to in this subparagraph as “common owners”) own (within the meaning of subsection (d)(2)), 50 percent or more of the total combined voting power of all classes of stock entitled to vote or 50 percent or more of the total value of shares of all classes of stock in a corporation, the following stock of such corporation shall be treated as excluded stock—(i) stock in such corporation held by an employees’ trust described in section 401(a) which is exempt from tax under section 501(a), if such trust is for the benefit of the employees of such corporation, (ii) stock in such corporation owned (within the meaning of subsection (d)(2)) by an employee of the corporation if such stock is subject to conditions which run in favor of any of such common owners (or such corporation) and which substantially restrict or limit the employee’s right (or if the employee constructively owns such stock, the direct owner’s right) to dispose of such stock. If a condition which limits or restricts the employee’s right (or the direct owner’s right) to dispose of such stock also applies to the stock held by any of the common owners pursuant to a bona fide reciprocal stock purchase arrangement, such condition shall not be treated as one which restricts or limits the employee’s right to dispose of such stock, or (iii) stock in such corporation owned (within the meaning of subsection (d)(2)) by an organization to which section 501 (relating to certain educational and charitable organizations which are exempt from tax) applies and which is controlled directly or indirectly by such corporation, by an individual, estate, or trust that is a principal stockholder (within the meaning of subparagraph (A)(ii)) of such corporation, by an officer of such corporation, or by any combination thereof. (d) Rules for determining stock ownership(1) Parent-subsidiary controlled groupFor purposes of determining whether a corporation is a member of a parent-subsidiary controlled group of corporations (within the meaning of subsection (a)(1)), stock owned by a corporation means—(A) stock owned directly by such corporation, and (B) stock owned with the application of paragraphs (1), (2), and (3) of subsection (e). (2) Brother-sister controlled groupFor purposes of determining whether a corporation is a member of a brother-sister controlled group of corporations (within the meaning of subsection (a)(2)), stock owned by a person who is an individual, estate, or trust means—(A) stock owned directly by such person, and (B) stock owned with the application of subsection (e). (e) Constructive ownership(1) OptionsIf any person has an option to acquire stock, such stock shall be considered as owned by such person. For purposes of this paragraph, an option to acquire such an option, and each one of a series of such options, shall be considered as an option to acquire such stock. (2) Attribution from partnershipsStock owned, directly or indirectly, by or for a partnership shall be considered as owned by any partner having an interest of 5 percent or more in either the capital or profits of the partnership in proportion to his interest in capital or profits, whichever such proportion is the greater. (3) Attribution from estates or trusts(A) Stock owned, directly or indirectly, by or for an estate or trust shall be considered as owned by any beneficiary who has an actuarial interest of 5 percent or more in such stock, to the extent of such actuarial interest. For purposes of this subparagraph, the actuarial interest of each beneficiary shall be determined by assuming the maximum exercise of discretion by the fiduciary in favor of such beneficiary and the maximum use of such stock to satisfy his rights as a beneficiary. (B) Stock owned, directly or indirectly, by or for any portion of a trust of which a person is considered the owner under subpart E of part I of subchapter J (relating to grantors and others treated as substantial owners) shall be considered as owned by such person. (C) This paragraph shall not apply to stock owned by any employees’ trust described in section 401(a) which is exempt from tax under section 501(a). (4) Attribution from corporationsStock owned, directly or indirectly, by or for a corporation shall be considered as owned by any person who owns (within the meaning of subsection (d)) 5 percent or more in value of its stock in that proportion which the value of the stock which such person so owns bears to the value of all the stock in such corporation. (5) SpouseAn individual shall be considered as owning stock in a corporation owned, directly or indirectly, by or for his spouse (other than a spouse who is legally separated from the individual under a decree of divorce whether interlocutory or final, or a decree of separate maintenance), except in the case of a corporation with respect to which each of the following conditions is satisfied for its taxable year—(A) The individual does not, at any time during such taxable year, own directly any stock in such corporation; (B) The individual is not a director or employee and does not participate in the management of such corporation at any time during such taxable year; (C) Not more than 50 percent of such corporation’s gross income for such taxable year was derived from royalties, rents, dividends, interest, and annuities; and (D) Such stock in such corporation is not, at any time during such taxable year, subject to conditions which substantially restrict or limit the spouse’s right to dispose of such stock and which run in favor of the individual or his children who have not attained the age of 21 years. (6) Children, grandchildren, parents, and grandparents(A) Minor childrenAn individual shall be considered as owning stock owned, directly or indirectly, by or for his children who have not attained the age of 21 years, and, if the individual has not attained the age of 21 years, the stock owned, directly or indirectly, by or for his parents. (B) Adult children and grandchildrenAn individual who owns (within the meaning of subsection (d)(2), but without regard to this subparagraph) more than 50 percent of the total combined voting power of all classes of stock entitled to vote or more than 50 percent of the total value of shares of all classes of stock in a corporation shall be considered as owning the stock in such corporation owned, directly or indirectly, by or for his parents, grandparents, grandchildren, and children who have attained the age of 21 years. (C) Adopted childFor purposes of this section, a legally adopted child of an individual shall be treated as a child of such individual by blood. (f) Other definitions and rules(1) Employee definedFor purposes of this section the term “employee” has the same meaning such term is given by paragraphs (1) and (2) of section 3121(d). (2) Operating rules(A) In generalExcept as provided in subparagraph (B), stock constructively owned by a person by reason of the application of paragraph (1), (2), (3), (4), (5), or (6) of subsection (e) shall, for purposes of applying such paragraphs, be treated as actually owned by such person. (B) Members of familyStock constructively owned by an individual by reason of the application of paragraph (5) or (6) of subsection (e) shall not be treated as owned by him for purposes of again applying such paragraphs in order to make another the constructive owner of such stock. (3) Special rulesFor purposes of this section—(A) If stock may be considered as owned by a person under subsection (e)(1) and under any other paragraph of subsection (e), it shall be considered as owned by him under subsection (e)(1). (B) If stock is owned (within the meaning of subsection (d)) by two or more persons, such stock shall be considered as owned by the person whose ownership of such stock results in the corporation being a component member of a controlled group. If by reason of the preceding sentence, a corporation would (but for this sentence) become a component member of two controlled groups, it shall be treated as a component member of one controlled group. The determination as to the group of which such corporation is a component member shall be made under regulations prescribed by the Secretary which are consistent with the purposes of this part. (C) If stock is owned by a person within the meaning of subsection (d) and such ownership results in the corporation being a component member of a controlled group, such stock shall not be treated as excluded stock under subsection (c)(2), if by reason of treating such stock as excluded stock the result is that such corporation is not a component member of a controlled group of corporations. (4) Franchised corporationIf—(A) a parent corporation (as defined in subsection (c)(2)(A)), or a common owner (as defined in subsection (c)(2)(B)), of a corporation which is a member of a controlled group of corporations is under a duty (arising out of a written agreement) to sell stock of such corporation (referred to in this paragraph as “franchised corporation”) which is franchised to sell the products of another member, or the common owner, of such controlled group; (B) such stock is to be sold to an employee (or employees) of such franchised corporation pursuant to a bona fide plan designed to eliminate the stock ownership of the parent corporation or of the common owner in the franchised corporation; (C) such plan—(i) provides a reasonable selling price for such stock, and (ii) requires that a portion of the employee’s share of the profits of such corporation (whether received as compensation or as a dividend) be applied to the purchase of such stock (or the purchase of notes, bonds, debentures or other similar evidence of indebtedness of such franchised corporation held by such parent corporation or common owner); (D) such employee (or employees) owns directly more than 20 percent of the total value of shares of all classes of stock in such franchised corporation; (E) more than 50 percent of the inventory of such franchised corporation is acquired from members of the controlled group, the common owner, or both; and (F) all of the conditions contained in subparagraphs (A), (B), (C), (D), and (E) have been met for one-half (or more) of the number of days preceding the December 31 included within the taxable year (or if the taxable year does not include December 31, the last day of such year) of the franchised corporation, then such franchised corporation shall be treated as an excluded member of such group, under subsection (b)(2), for such taxable year. (5) Brother-sister controlled group definition for provisions other than this part(A) In generalExcept as specifically provided in an applicable provision, subsection (a)(2) shall be applied to an applicable provision as if it read as follows: “(2) Brother-sister controlled group“Two or more corporations if 5 or fewer persons who are individuals, estates, or trusts own (within the meaning of subsection (d)(2) stock possessing—“(A) at least 80 percent of the total combined voting power of all classes of stock entitled to vote, or at least 80 percent of the total value of shares of all classes of stock, of each corporation, and “(B) more than 50 percent of the total combined voting power of all classes of stock entitled to vote or more than 50 percent of the total value of shares of all classes of stock of each corporation, taking into account the stock ownership of each such person only to the extent such stock ownership is identical with respect to each such corporation.” (B) Applicable provisionFor purposes of this paragraph, an applicable provision is any provision of law (other than this part) which incorporates the definition of controlled group of corporations under subsection (a).