Tax Deadline 2024 California Extension. For 2023 california taxes, the key dates are april 15, 2024 for tax payments and october 15, 2024 if you're taking the automatic extension to file your state income. This gives you until october 15 to file without penalties.
Taxpayers affected by these storms qualify for an extension to october 16, 2023 to file individual and business tax returns and make certain tax payments. The deadline is october 15, 2024.