File Tax Extension 2024 California. If you chose to file an extension request on your tax return, this is the due date for filing your tax return. Find irs mailing addresses for taxpayers and tax professionals filing individual federal tax returns for their clients in california.

Quarterly payroll and excise tax returns normally due on may 1, july 31 and oct. Deadline for taxpayers who got a ca tax extension to file their california income tax return.