Tax Deadline 2024 San Diego California. 2024 estimated tax payments normally due on april 15, 2024. Individuals and businesses with their principal residence or place of business in san diego county will have until june 17, 2024, to file certain california individual and business.

 — this means, for example, that the june 17, 2024, deadline will now apply to:  — san diegons now have until june 17, 2024 to (i) file their 2023 federal and california income tax returns, (ii) pay the amount due with their 2023 federal and.