Tax diary: the dates that matter in October and November 2026
Here are the main dates for sole traders, contractors and VAT-registered businesses over the next two months.
October
- 5 October: register for Self Assessment if you are new
- 7 October: VAT returns and payments for quarters ended 31 August
- 19 October: monthly CIS returns due
- 22 October: CIS deductions due if paying electronically
- 28 October: Autumn Budget
- 31 October: paper Self Assessment returns (a Saturday)
November
- 7 November: VAT returns and payments for quarters ended 30 September (a Saturday, so file early)
- 19 November: monthly CIS returns due
- 22 November: CIS deductions due (a Sunday, so allow extra time)
Where a date falls on a weekend, aim to file and pay a couple of days earlier. Your own VAT quarter may differ from the one above.
You can add your dates to your own calendar from our free downloads page.
General information, not personal tax advice. Written on 1 October 2026.