Tax Filing Deadline 2024 San Diego. If you live in san diego county and received a late filing penalty from the irs, you should call the agency to work that out. San diego county taxpayers affected by floods have until june 17, 2024, to file and pay.

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. Quarterly payroll and excise tax returns normally due on jan.