Tax Diary June/July 2025

1 June 2025 – Due date for corporation tax due for the year ended 31 August 2024.

19 June 2025 – PAYE and NIC deductions due for month ended 5 June 2025. (If you pay your tax electronically the due date is 22 June 2025).

19 June 2025 – Filing deadline for the CIS300 monthly return for the month ended 5 June 2025.

19 June 2025 – CIS tax deducted for the month ended 5 June 2025 is payable by today.

1 July 2025 – Due date for corporation tax due for the year ended 30 September 2024.

6 July 2025 – Complete and submit forms P11D return of benefits and expenses and P11D(b) return of Class 1A NICs.

19 July 2025 – Pay Class 1A NICs (by the 22 July 2025 if paid electronically).

19 July 2025 – PAYE and NIC deductions due for month ended 5 July 2025. (If you pay your tax electronically the due date is 22 July 2025).

19 July 2025 – Filing deadline for the CIS300 monthly return for the month ended 5 July 2025.

19 July 2025 – CIS tax deducted for the month ended 5 July 2025 is payable by today.

31 July 2025 – Pay second self-assessment payment on account for 2024-25.

Source: HM Revenue & Customs | 01-05-2025

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