California Code, Revenue and Taxation Code - RTC § 4222.5

(a) Notwithstanding any other provision of this article, the tax collector of any countythat is designated by the Governor to be in a state of emergency or disasterdue to a major misfortune or calamity and is therefore an eligible county for tax relief, as defined in Chapter 5 (commencing with Section 194) of Part 2, may defer for a period of one year payments under an installment plan if all of the following conditions are met:

(b) This section does not preclude the assessment of interest in connection with the deferral of any installment payment. Any interest so assessed shall be due and payable together with the deferred installment payment.

(c) For purposes of this section, “substantial business losses” means net business losses incurred by the assessee after accounting for the assessee's receipt of any federal disaster aid, state disaster aid, related insurance loss claim payments, or property tax relief under Chapter 5 (commencing with Section 194) of Part 2.