Tax Diary February/March 2026
1 February 2026 - Due date for Corporation Tax payable for the year ended 30 April 2025.19 February 2026 - PAYE and NIC deductions due for month ended 5 February 2026. (If you pay your tax electronically the due date is 22 February 2026)19 February 2026 - Filing deadline for the CIS300 monthly return for the month ended 5 February 2026.19 February 2026 - CIS tax deducted for the month ended 5 February 2026 is payable by today.1 March 2026 - Due date for Corporation Tax due for the year ended 31 May 2025.2 March 2026 – Self-Assessment tax for...