Section 19583.

Cal. Revenue and Taxation Code - RTC § 19583.
in effect
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The Franchise Tax Board shall, in preparing tax forms, include the following statement adjacent to the signature line of any income tax return required to be filed by a married individual: “It is unlawful to forge a spouse’s signature.”
Source: CA Legislative Counsel Bulk DataURL: https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zipFetched: 6/27/2026

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