For purposes of this part, Section 55 of the Internal Revenue Code is modified as follows:

(a) Section 55(b)(1) of the Internal Revenue Code, relating to tentative minimum tax, is modified by requiring the tentative minimum tax for the taxable year to be imposed as follows:

(1) With respect to corporations subject to tax under Chapter 2 (commencing with Section 23101), other than banks or financial corporations, according to or measured by net income, for the privilege of doing business within this state, at a rate of 7 percent upon the basis of so much of the alternative minimum taxable income for the taxable year as exceeds the exemption amount.

(2) With respect to corporations subject to tax under Chapter 3 (commencing with Section 23501), on net income from sources within this state, at a rate of 7 percent upon the basis of so much of the alternative minimum taxable income for the taxable year as exceeds the exemption amount.

(3) With respect to organizations or trusts subject to tax under Article 2 (commencing with Section 23731) of Chapter 4, on the unrelated business income from sources within this state, at a rate of 7 percent upon the basis of so much of the alternative taxable income for the taxable year as exceeds the exemption amount.

(4) With respect to banks subject to tax under Section 23181, according to or measured by net income, for the privilege of doing business within this state, in an amount equal to the sum of the following:

(A) At a rate of 7 percent upon the basis of so much of the alternative minimum taxable income as exceeds the exemption amount.

(B) At the rate determined under Section 23186, less the rate prescribed by Section 23151, upon the basis of net income for the taxable year.

(5) With respect to financial corporations subject to tax under Section 23183, according to or measured by net income, for the privilege of doing business within this state, in an amount equal to the sum of the following:

(A) At a rate of 7 percent upon the basis of so much of the alternative minimum taxable income as exceeds the exemption amount.

(B) At the rate determined under Section 23186, less the rate prescribed by Section 23151, upon the basis of net income for the taxable year.

(b) Section 55(b)(2) of the Internal Revenue Code, relating to the definition of alternative minimum taxable income, is modified as follows:

(1) For corporations whose net income is determined under Chapter 17 (commencing with Section 25101), alternative minimum taxable income shall be allocated and apportioned in the same manner as net income is allocated and apportioned for purposes of the regular tax.

(2) With respect to taxpayers subject to Article 4 (commencing with Section 23221) of Chapter 2, Article 4 (commencing with Section 23221) to Article 9 (commencing with Section 23361), inclusive, shall apply to the tax imposed by this section except that Section 23221 shall not apply.

(3) For purposes of computing the alternative minimum tax for taxable years in which a taxpayer commenced doing business, dissolves, withdraws, or ceases doing business, Sections 18601, 23151, 23151.1, 23151.2, 23181, 23183, 23183.1, 23183.2, 23201 to 23204, inclusive, 23222 to 23224.5, inclusive, 23282, 23332.5, and 23504 shall be applied with due regard for the rate and alternative minimum taxable income prescribed by this chapter.

(c) Section 55(c) of the Internal Revenue Code, relating to the definition of regular tax, is modified to read:

(1) For purposes of this chapter, “regular tax” means the amount of tax imposed under Chapter 2 (commencing with Section 23101) or Chapter 3 (commencing with Section 23501) or Article 2 (commencing with Section 23731) of Chapter 4, but does not include any amount imposed under paragraph (1) of subdivision (e) of Section 24667 or paragraph (2) of subdivision (f) of Section 24667.

(2) The tax specified in paragraph (1) shall be the amount determined prior to reduction by any credits against the tax.

(d) The rate of 7 percent prescribed in subdivision (a) shall be 6.65 percent for any taxable year beginning on or after January 1, 1997. The change in rate provided in this subdivision shall be made without proration otherwise required by Section 24251.

(Amended by Stats. 2000, Ch. 862, Sec. 64. Effective January 1, 2001.)