California Disaster Tax Extension 2025. In the wake of last winter's natural disasters, the normal spring due dates had previously been postponed to oct. 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 through june 17, 2025.
The june 17, 2025, deadline applies to individual income tax returns and payments normally due on april 15, 2025, and applies to: They may claim the disaster loss for the 2023 tax year when they file their return next spring, or they may claim the loss.