(a) Section 1361(b)(3) of the Internal Revenue Code, relating to treatment of certain wholly owned subsidiaries, is modified as follows:

1. (1) For purposes of Part 10 (commencing with Section 17001), Part 10.2 (commencing with Section 18401), and this part:

   1. (A) Section 1361(b)(3)(A)(i) of the Internal Revenue Code shall apply, except as provided in subparagraph (B).
   2. (B) There is hereby imposed a tax annually in an amount equal to the applicable amount specified in paragraph (1) of subdivision (d) of Section 23153 on a qualified Subchapter S subsidiary that is incorporated under the laws of this state, qualified to transact intrastate business in this state pursuant to Chapter 21 (commencing with Section 2100) of Division 1 of Title 1 of the Corporations Code, or doing business in this state.
   3. (C) Every qualified Subchapter S subsidiary described in subparagraph (B) shall be subject to the tax imposed under subparagraph (B) from the earlier of the date of incorporation, qualification, or commencement of business in this state, until the effective date of dissolution or withdrawal as provided in Section 23331, or, if later, the date the corporation ceases to do business in this state.

2. (2) For purposes of Part 10 (commencing with Section 17001), Part 10.2 (commencing with Section 18401), and this part:

   1. (A) Section 1361(b)(3)(A)(ii) of the Internal Revenue Code does not apply and, in lieu thereof, subparagraph (B) shall apply and all references to Section 1361(b)(3)(A)(ii) of the Internal Revenue Code shall be treated as a reference to subparagraph (B).
   2. (B) All activities, assets, liabilities, including liability for the tax imposed under this subdivision, and items of income, deduction, and credit of a qualified Subchapter S subsidiary shall be treated as activities (including activities for purposes of Section 23101), assets, liabilities, and those items, as the case may be, of the “S corporation.”

3. (3) Section 1361(b)(3)(B) of the Internal Revenue Code is modified to include the following requirements in addition to the requirements contained therein:

   1. (A) The “S corporation” has in effect a valid election to treat the corporation as a qualified Subchapter S subsidiary for federal income tax purposes.
   2. (B) An election made by the “S corporation” under Section 1361(b)(3)(B)(ii) of the Internal Revenue Code to treat the corporation as a qualified Subchapter S subsidiary for federal income tax purposes shall be treated for purposes of this part as an election made by the “S corporation” under this subdivision and a separate election under paragraph (3) of subdivision (e) of Section 23051.5 may not be allowed.
   3. (C) No election under this subdivision shall be allowed unless the “S corporation” has made the election under Section 1361(b)(3)(B)(ii) of the Internal Revenue Code to treat the corporation as a qualified Subchapter S subsidiary for federal income tax purposes.

(d) Section 1361(e)(3) of the Internal Revenue Code, relating to election, is modified to include the following provisions:

1. (1) An election made by the trustee under Section 1361(e) of the Internal Revenue Code to be an electing small business trust for federal income tax purposes shall be treated for purposes of this part as an election made by the trustee under this subdivision and a separate election under paragraph (3) of subdivision (e) of Section 23051.5 may not be allowed. Any election made shall apply to the taxable year of the trust for which that election is made and to all subsequent taxable years of that trust, unless revoked with the consent of the Franchise Tax Board.
2. (2) No election under this subdivision shall be allowed unless the trustee has made the election under Section 1361(e) of the Internal Revenue Code to be an electing small business trust for federal income tax purposes.