Tax Deadline 2024 California State. The 2023 deadline for filing california state tax returns is a date every taxpayer should mark on their. The deadline for filing california state income tax returns is typically april 15th, unless it falls on a weekend or holiday.
The deadline is october 15, 2024. However, california grants an automatic extension until october 15, 2024 to file your return, although your payment is still due by april 15, 2024.