Cal. Rev. & Tax. Code § 24416.4

(a) The term “qualified taxpayer” as used in Section 24416.1 includes a corporation engaged in the conduct of a trade or business within the Los Angeles Revitalization Zone designated pursuant to Section 7102 of the Government Code. For purposes of this subdivision, all of the following shall apply:
1. (1) A net operating loss shall not be a net operating loss carryback for any taxable year and, except as provided in subparagraph (B), a net operating loss for any taxable year beginning on or after the date the area in which the taxpayer conducts a trade or business is designated the Los Angeles Revitalization Zone shall be a net operating loss carryover to each following taxable year that ends before the Los Angeles Revitalization Zone expiration date or to each of the 15 taxable years following the taxable year of loss, if longer.
2. (2) In the case of a financial institution to which Section 585, 586, or 593 of the Internal Revenue Code applies, a net operating loss for any taxable year beginning on or after January 1, 1984, shall be a net operating loss carryover to each of the five years following the taxable year of the loss. Subdivision (b) of Section 24416.1 shall not apply.
3. (3) “Net operating loss” means the loss determined under Section 172 of the Internal Revenue Code, as modified by Section 24416.1, attributable to the taxpayer’s business activities within the Los Angeles Revitalization Zone (as defined in Section 7102 of the Government Code) prior to the Los Angeles Revitalization Zone expiration date. The attributable loss shall be determined in accordance with Chapter 17 (commencing with Section 25101) of Part 11, modified as follows:
  1. (A) The loss shall be apportioned to the Los Angeles Revitalization Zone by multiplying the loss from the business by a fraction, the numerator of which is the property factor plus the payroll factor, and the denominator of which is 2.
  2. (B) “The Los Angeles Revitalization Zone” shall be substituted for “this state.”
4. (4) A net operating loss carryover shall be a deduction only with respect to the taxpayer’s business income attributable to the Los Angeles Revitalization Zone (as defined in Section 7102 of the Government Code) determined in accordance with subdivision (c).
5. (5) If a loss carryover is allowable pursuant to this section for any taxable year after the Los Angeles Revitalization Zone designation has expired, the Los Angeles Revitalization Zone shall be deemed to remain in existence for purposes of computing the limitation set forth in paragraph (2) and allowing a net operating loss deduction.
6. (6) Attributable income shall be that portion of the taxpayer’s California source business income which is apportioned to the Los Angeles Revitalization Zone. For that purpose, the taxpayer’s business income attributable to sources in this state first shall be determined in accordance with Chapter 17 (commencing with Section 25101). That business income shall be further apportioned to the Los Angeles Revitalization Zone in accordance with Article 2 (commencing with Section 25120) of Chapter 17, modified as follows:
  1. (A) Business income shall be apportioned to the Los Angeles Revitalization Zone by multiplying total California business income of the taxpayer by a fraction, the numerator of which is the property factor plus the payroll factor, and the denominator of which is 2.
  2. (B) The property factor is a fraction, the numerator of which is the average value of the taxpayer’s real and tangible personal property owned or rented and used in the Los Angeles Revitalization Zone during the taxable year and the denominator of which is the average value of all the taxpayer’s real and tangible personal property owned or rented and used in this state during the taxable year.
  3. (C) The payroll factor is a fraction, the numerator of which is the total amount paid by the taxpayer in the Los Angeles Revitalization Zone during the taxable year for compensation, and the denominator of which is the total compensation paid by the taxpayer in this state during the taxable year.
7. (7) “Los Angeles Revitalization Zone expiration date” means the date the Los Angeles Revitalization Zone designation expires, is repealed, or becomes inoperative pursuant to Section 7102, 7103, or 7104 of the Government Code.
(b) This section shall be inoperative on the first day of the taxable year beginning on or after the determination date, and each taxable year thereafter, with respect to the taxpayer’s business activities within a geographic area that is excluded from the map pursuant to Section 7102 of the Government Code, or an excluded area determined pursuant to Section 7104 of the Government Code. The determination date is the earlier of the first effective date of a determination under subdivision (c) of Section 7102 of the Government Code occurring after December 1, 1994, or the first effective date of an exclusion of an area from the amended Los Angeles Revitalization Zone under Section 7104 of the Government Code. However, if the taxpayer has any unused loss amount as of the date this section becomes inoperative, that unused loss amount may continue to be carried forward as provided in this section.
(c) A taxpayer who qualifies as a “qualified taxpayer” under one or more sections shall, for the taxable year of the net operating loss and any taxable year to which that net operating loss may be carried, designate on the original return filed for each year the section that applies to that taxpayer with respect to that net operating loss. If the taxpayer is eligible to qualify under more than one section, the designation is to be made after taking into account subdivision (d).
(d) If a taxpayer is eligible to qualify under this section and either Section 24416.2, 24416.5, or 24416.6 as a “qualified taxpayer,” with respect to a net operating loss in a taxable year, the taxpayer shall designate which section is to apply to the taxpayer.
(e) Notwithstanding Section 24416, the amount of the loss determined under this section or Section 24416.2, 24416.5, or 24416.6 shall be the only net operating loss allowed to be carried over from that taxable year and the designation under subdivision (c) shall be included in the election under Section 24416.1.
(f) This section shall cease to be operative on December 1, 1998. However, any unused net operating loss may continue to be carried over to following years as provided in this section.