2026 Schedule of Quarterly Tax Return Due Dates
**This schedule takes into consideration Saturdays, Sundays and legal holidays.
Returns and payments are considered timely if they are filed/paid on or before the due date.
**This schedule takes into consideration Saturdays, Sundays and legal holidays.
Returns and payments are considered timely if they are filed/paid on or before the due date.
Last updated: January 2, 2026
Maintained by: National Revenue Center