Tax Diary

1 October 2026 – Corporation Tax payment is due for companies with an accounting period ending 31 December 2025, unless

1 September 2026 – Due date for corporation tax due for the year ended 30 November 2025.

19 September 2026 – PAYE and

1 August 2026 – Due date for Corporation Tax due for the year ended 31 October 2025.

19 August 2026 – PAYE and NIC

1 July 2026 – Due date for corporation tax due for the year ended 30 September 2025.

6 July 2026 – Complete and submit

1 June 2026 – Due date for corporation tax due for the year ended 31 August 2025.

19 June 2026 – PAYE and NIC

1 May 2026 – Due date for corporation tax due for the year ended 30 July 2025.

19 May 2026 – PAYE and NIC deductions

1 April 2026 – Due date for corporation tax due for the year ended 30 June 2025.19 April 2026 – PAYE and NIC deductions

1 March 2026 – Due date for Corporation Tax due for the year ended 31 May 2025.2 March 2026 – Self-Assessment tax for

1 February 2026 – Due date for Corporation Tax payable for the year ended 30 April 2025.19 February 2026 – PAYE and NIC

1 January 2026 – Due date for Corporation Tax due for the year ended 31 March 202519 January 2026 – PAYE and NIC