Cal. Rev. & Tax. Code § 24416.21

(a) Notwithstanding Sections 24416, 24416.1, 24416.2, 24416.4, 24416.5, 24416.6, and 24416.7 of this code and Section 172 of the Internal Revenue Code, no net operating loss deduction shall be allowed for any taxable year beginning on or after January 1, 2008, and before January 1, 2012.
(b) For any net operating loss or carryover of a net operating loss for which a deduction is denied by subdivision (a), the carryover period under Section 172 of the Internal Revenue Code shall be extended as follows:
1. (1) By one year, for losses incurred in taxable years beginning on or after January 1, 2010, and before January 1, 2011.
2. (2) By two years, for losses incurred in taxable years beginning on or after January 1, 2009, and before January 1, 2010.
3. (3) By three years, for losses incurred in taxable years beginning on or after January 1, 2008, and before January 1, 2009.
4. (4) By four years, for losses incurred in taxable years beginning before January 1, 2008.
(c) Notwithstanding subdivision (a), a net operating loss deduction shall be allowed for carryback of a net operating loss attributable to a taxable year beginning on or after January 1, 2013, and before January 1, 2019.
(d) The disallowance of any net operating loss deduction for any taxable year beginning on or after January 1, 2008, and before January 1, 2010, pursuant to subdivision (a) shall not apply to a taxpayer with income subject to tax under this part of less than five hundred thousand dollars ($500,000) for the taxable year.
(e)
1. (1) The disallowance of any net operating loss deduction for any taxable year beginning on or after January 1, 2010, and before January 1, 2012, pursuant to subdivision (a) shall not apply to a taxpayer with preapportioned income of less than three hundred thousand dollars ($300,000) for the taxable year.
2. (2) For purposes of this subdivision, “preapportioned income” means net income after state adjustments, before the application of the apportionment and allocation provisions of this part.
3. (3) For taxpayers that are required to be included in a combined report under Section 25101 or authorized to be included in a combined report under Section 25101.15, the amount prescribed in paragraph (1) shall apply to the aggregate amount of preapportioned income for all members included in a combined report.
(f) Notwithstanding subdivision (a), this section shall not apply to a taxpayer that ceased to do business or has a final taxable year ending prior to August 28, 2008, that sold or transferred substantially all of its assets resulting in a gain on sale during a taxable year ending prior to August 28, 2008, for which the gain could be offset with existing net operating loss deductions and the sale or transfer occurred pursuant to a plan of reorganization under Chapter 11 of Title 11 of the United States Code. An amended tax return claiming net operating loss deductions allowed pursuant to this subdivision shall be treated as a timely filed original return.
(g) The Legislature finds and declares that the addition of subdivision (f) to this section by the act adding this subdivision fulfills a statewide public purpose by providing necessary tax relief for a taxpayer that ceased to do business or has a final taxable year ending prior to August 28, 2008, that sold or transferred substantially all of its assets resulting in a gain or sale during a taxable year prior to August 28, 2008, for which the gain could be offset with existing net operating loss deductions and the sale or transfer occurred pursuant to a plan of reorganization under Chapter 11 of Title 11 of the United States Code, in order to ensure that these taxpayers are not permanently denied the net operating loss deduction.