California LLCs do not pay income tax but they are subject to the $800 annual tax (and a fee). Further, All LLCs (not classified as a corporation) that are doing business in California, or file an article of organization or certificate of registration with the Secretary of State must file Form 568, Limited Liability Company Return of Income, pay the annual minimum franchise tax of $800, and LLC fee (if applicable). For more info see the link below:
https://www.ftb.ca.gov/businesses/bus_structures/LLcompany.shtml#filing_guidelines