Dates and deadlines
19 March 2026
CIS Return
Payments made to subcontractors in the month to 5 March 2026
PAYE, NIC and CIS payment (postal)
Month-end 5 March 2026
22 March 2026
PAYE, NIC and CIS payment (electronic)
Month-end 5 March 2026
31 March 2026
Annual Tax on Enveloped Dwellings
Amend ATED returns for year to 31 March 2025
Corporation Tax Returns
31 March 2025 year ends
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