California Tax Return Deadline 2024. Stay on top of important 2023 california state tax deadlines and due dates for your tax return, income tax filing, and state tax payments. The tax filing deadline for california state income tax returns has been extended to may 17 along with the federal tax filing deadline.

No need to file a separate form to qualify. The california tax deadline extension covers tax filing and payment deadlines initially falling between january 21, 2024, and june 17, 2024.