California — Filing Deadlines & Extensions (State Tax Charts)
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California (CA) — Filing Deadlines & Extensions: Individuals Apr 15; automatic paperless extension to Oct 15. California individual returns are due April 15 with an automatic no-form extension to October 15 (payment still due April 15). Calendar-year corporations file by April 15 (S corps March 15); the $800 minimum franchise tax has its own first-year timing rules. Authority: FTB due-dates page; Cal. Rev. & Tax. Code §18567. CPA-verified 2026-07-11.
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