Specialist Tax News

Diary of main tax events October / November 2025

Date What’s Due
1 October Corporation Tax for year to 31/12/2024, unless quarterly instalments apply
5 October Deadline for notifying HMRC of chargeability, if not already within Self-Assessment, for 2024/25
19 October PAYE & NIC deductions, and CIS return and tax, for month to 05/10/2025 (due 22/10 if you pay electronically)
1 November Corporation Tax for year to 31/01/2025, unless quarterly instalments apply
19 November PAYE & NIC deductions, and CIS return and tax, for month to 05/11/2025 (due 22/11 if you pay electronically)