California Revenue & Taxation Code
Cal. Rev. & Tax. Code § 6012.3
(a)For purposes of this part, “gross receipts” and “sales price” do not include that portion of the sales price returned to the purchaser of a used motor vehicle or any restocking fees pursuant to Section 1784.43 of the Civil Code.
(b)This section shall become operative October 1, 2026.
Source: official text