California Filers: Check the State Return as Well as the Federal One.
California’s automatic filing extension is separate from the original payment deadline.
General California extended deadline: October 15, 2026
California’s General Filing Extension
FTB guidance lists October 15, 2026 as the extended filing deadline for 2025 individual returns. California generally grants the extension automatically, but the original payment due date remained April 15, 2026.
Avoid the Federal-Only Assumption
A completed federal return or an IRS payment arrangement does not settle a California filing or payment obligation. Confirm your state filing status and payments separately. If you cannot pay, use FTB’s official assistance and payment-plan information.
Confirm Your Own Deadline
Special relief can affect particular taxpayers. Check FTB’s current guidance and the relevant notice rather than applying this general deadline to every situation. Business, payroll, and sales-tax obligations may follow other schedules.
Collect your federal filing confirmation, state return information, payment records, and any FTB notice. Keep a separate calendar entry for the state response or filing action.
Read the Original Sources
FTB Extension GuidanceFTB Personal Due DatesFTB Help If You Cannot PayReporting reflects the linked sources and dates. It is not a prediction, refund guarantee, or individual legal or tax determination.