Cal. Revenue and Taxation Code - RTC § 23281. Section 23281.
(a)
(1)
When a taxpayer ceases to do business within the state during any taxable year and does not dissolve or withdraw from the state during that year, and does not resume doing business during the succeeding taxable year, its tax for the taxable year in which it resumes doing business prior to January 1, 2000, shall be the greater of the following:
(A)
The tax computed upon the basis of the net income of the income year in which it ceased doing business, except where the income has already been included in the measure of a tax imposed by this chapter.
(B)
The minimum tax prescribed in Section 23153.
(2)
When a taxpayer ceases to do business within the state during any taxable year and does not dissolve or withdraw from the state during that year, and does not resume doing business during the succeeding taxable year, its tax for the taxable year in which it resumes doing business, on or after January 1, 2000, shall be according to or measured by its net income for the taxable year in which it resumes doing business.
(b)
The tax shall be due and payable at the time the corporation resumes doing
business, or on or before the due date of the return for its taxable year, whichever is later. All the provisions of this part relating to delinquent taxes shall be applicable to the tax if it is not paid on or before its due date.
(c)
This section does not apply to a corporation that became subject to Chapter 3 (commencing with Section 23501) after it discontinued doing business in this state (see Section 23224.5).
(d)
The amendments made to this section by the act adding this subdivision shall apply to taxable years beginning on or after January 1, 2016.