California Code, Revenue and Taxation Code - RTC § 18544

(a) For each taxable year beginning on or after January 1, 2025, the Franchise Tax Board shall include checkboxes on resident income tax returns to allow individuals, including spouses filing a joint return, heads of households, or surviving spouses, to provide written consent for Donate Life California to enroll the individual in the Donate Life California Organ and Tissue Donor Registry and for the Franchise Tax Board to share the individual's information, as described in Section 19572.5, with Donate Life California for purposes of administering that registry. The individual's written consent to have their information shared with Donate Life California shall be valid for one year from the date the return is signed.

(b) The Franchise Tax Board shall enter into a memorandum of understanding with the Donate Life California Organ and Tissue Donor Registry for purposes of mutually agreeing on the language to be used on the returns pursuant to subdivision (a).

(c) For purposes of this section, “Donate Life California Organ and Tissue Donor Registry” means the registry established pursuant to Section 7150.90 of the Health and Safety Code.