Corp. Code, § 8020.5

(a) Upon merger pursuant to this chapter, a surviving domestic or foreign corporation or other business entity shall be deemed to have assumed the liability of each disappearing domestic or foreign corporation or other business entity that is taxed under Part 10 (commencing with Section 17001) of, or under Part 11 (commencing with Section 23001) of, Division 2 of the Revenue and Taxation Code for the following:

(1) To prepare and file, or to cause to be prepared and filed, tax and information returns otherwise required of that disappearing entity as specified in Chapter 2 (commencing with Section 18501) of Part 10.2 of Division 2 of the Revenue and Taxation Code.

(2) To pay any tax liability determined to be due.

(b) If the surviving entity is a domestic limited liability company, domestic corporation, or registered limited liability partnership or a foreign limited liability company, foreign limited liability partnership, or foreign corporation that is registered or qualified to do business in California, the Secretary of State shall notify the Franchise Tax Board of the merger.