Tax Diary July/August 2025
Source: HM Revenue & Customs | | 06/06/20251 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.
1 August 2025 - Due date for corporation tax due for the year ended 31 October 2024.
19 August 2025 - PAYE and NIC deductions due for month ended 5 August 2025. (If you pay your tax electronically the due date is 22 August 2025)
19 August 2025 - Filing deadline for the CIS300 monthly return for the month ended 5 August 2025.
19 August 2025 - CIS tax deducted for the month ended 5 August 2025 is payable by today.
