California Code, Revenue and Taxation Code - RTC § 4701

(a) The Legislature hereby finds and declares that it is the purpose of this chapter to provide an alternative procedure for the distribution of property tax levies on the secured roll made by counties on their own behalf or as the tax-levying and tax-collecting agency for other political subdivisions.The Legislature further finds and declares that the object of this alternative procedure is to simplify the tax-levying and tax-apportioning process and to increase flexibility in the use of available cash resources.

(b) For purposes of this chapter only, the term “secured roll” may include the supplemental property tax roll as described in Chapter 3.5 (commencing with Section 75) of Part 0.5 of Division 1.