San Diego 2024 Deadline For Tax Returns. Affected individuals and businesses in san diego county now have until june 17 to file their tax returns and pay federal and state taxes due between january. 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.

San diego county individuals and businesses impacted by severe storms and flooding that began on january 21, 2024, qualify for an extension to file, and pay. 2023 contributions to iras and health savings accounts for eligible taxpayers.