California Code, Revenue and Taxation Code - RTC § 6151

(a) Beginning on the date for which the federal Centers for Medicare and Medicaid Services approves implementation of the state plan amendment described in subdivision (c) of Section 12306.6 of the Welfare and Institutions Code, but no earlier than January 1, 2012, for the privilege of selling support services at retail, the sales tax is hereby extended to all providers at the rate, as described in subdivision (b), of the gross receipts of any provider from the sale of all support services sold at retail in this state.

(b) The rate extended by subdivision (a) is the rate, as may be amended from time to time, imposed by Article 1 (commencing with Section 6051) plus the rate imposed by Section 35 of Article XIII of the California Constitution for the privilege of selling tangible personal property at retail in this state.

(c) Notwithstanding the implementation date of this article as provided for in subdivision (a), no tax shall be collected pursuant to this article prior to the receipt of approval by the federal Centers for Medicare and Medicaid Services of the implementation of Section 12306.6 of the Welfare and Institutions Code.