Important deadlines
Dates and Deadlines
19 December 2025
CIS Return
Payments made to subcontractors in the month to 5 December 2025.
PAYE, NIC and CIS Payment (postal)
Month-end 5 December 2025.
22 December 2025
PAYE, NIC and CIS Payment (electronic)
Month-end 5 December 2025.
30 December 2025
Self Assessment
Payment of 2024/25 tax via PAYE coding out online return submission.
31 December 2025
Corporation Tax Returns
31 December 2024 year ends.
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