When do common recurring tax deadlines fall? What other tax significant events are upcoming? What do I need to remember this month? 

This is a freeview 'At a glance' rolling calendar of common recurring tax deadlines, significant new tax measures and other tax significant events.

September 2026

Tax deadlines

Date

Deadline

1

Corporation Tax payment: 30 November 2025 year ends

1

Advisory fuel rates for company car drivers: new rates published

7

VAT return submission and payment (online): month or quarter-end 31 July 2026

19

PAYE, NIC and CIS payment (postal): month-end 5 September 2026

19

CIS return: payments made to subcontractors in the month to 5 September 2026

22

PAYE, NIC and CIS payment (electronic): month-end 5 September 2026

30

Corporation Tax returns: 30 September 2025 year ends

30 Economic Crime Levy: payment due date for accounting periods ending in the financial year to 31 March 2026

Notes

For announcements made at the 2025 Autumn Budget and 2025 Spring Statement, see: 

For more key tax announcements in greater detail see: 

This calendar does not include: