Tax Deadline For San Diego 2024. Originally the deadline for filing individual tax returns and paying any tax due. 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 21.
San diego county residents now have until june 17 to file federal individual and business tax returns and make tax payments, following a push. Quarterly payroll and excise tax returns normally due on jan.