Cal. Code Regs. tit. 18, § 1803
(a) Sales Tax.
(1) In General. Except as stated below, in any case in which state sales tax is applicable, state-administered Bradley-Burns uniform local sales tax is also applicable, if the place of sale is in a county imposing a state-administered local tax. In any case in which state sales tax is inapplicable, state-administered local sales tax is also inapplicable. Thus, if title to the property sold passes to the purchaser at a point outside this state, state-administered local sales tax does not apply regardless of participation in the transaction by a California retailer. As explained in paragraphs (b) and (c), the use tax may apply. If so, the retailer is required to collect the use tax and pay it to the board.
Gross receipts from sales of tangible personal property subject to the local tax shall include delivery charges, when such charges are subject to the state sales or use tax.
(b) Use Tax. State-administered local use tax applies if the purchase is made from a retailer on or after the effective date of the local taxing ordinance and the property is purchased for use in a jurisdiction having a state-administered local tax and is actually used there, provided any one of the following conditions exist:
(4) The property is purchased under a valid resale certificate.
State-administered local use tax does not apply to the storing, keeping, retaining, processing, fabricating or manufacturing of tangible personal property for subsequent use solely outside the state or for subsequent use solely in a county not imposing a local use tax.
(c) Collection of Use Tax by Retailers. Retailers engaged in business in this state and making sales of tangible personal property, the storage, use tax, are required to collect the tax from the purchaser. It is immaterial that the retailer might not be engaged in business in the particular county or city in which the purchaser uses the property.
Retailers who are not engaged in business in this state may apply for a certificate of Registration-Use Tax. Holders of such certificates are required to collect tax from purchasers, give receipts therefor, and pay tax to the board in the same manner as retailers engaged in business in this state.
As used in this regulation, the term “Certificate of Registration-Use Tax” shall include Certificate of Authority to Collect Use Tax issued prior to September 11, 1957.
Note: Authority cited: Section 7051, Revenue and Taxation Code. Reference: Sections 6008, 6009.1, 6203, 6352, 6385, 7202, 7203 and 7205, Revenue and Taxation Code.
1. Amendment and renumbering of former Section 2203 filed 1-26-70; effective thirtieth day thereafter (Register 70, No. 5).
2. Amendment of subsection (a) filed 5-19-72; effective thirtieth day thereafter (Register 72, No. 21).
3. Amendment of subsection (a) filed 12-19-73; effective thirtieth day thereafter (Register 73, No. 51).
4. Amendment of subsection (a)(2) and repealer of subsection (a)(2)(A) filed 5-16-88; operative 6-15-88 (Register 88, No. 21).