Dates and deadlines
Never miss a financial deadline again
Stay organised and compliant with our essential guide to accounting dates and deadlines.
At Calculo, we clearly outline key filing dates, payment schedules, and regulatory requirements, ensuring your business runs smoothly, remains stress-free, and never misses an important deadline.
19 January 2026
CIS return
Payments made to subcontractors in the month to 5 January 2026
PAYE, NIC and CIS payment (postal)
Quarter-end 5 January 2026
PAYE, NIC and CIS payment (postal)
Month-end 5 January 2026
22 January 2026
PAYE, NIC and CIS payment (electronic)
Quarter-end 5 January 2026
PAYE, NIC and CIS payment (electronic)
Month-end 5 January 2026
30 January 2026
Non-resident landlord scheme
Payment of tax for the quarter ended 31 December 2025
31 January 2026
Self Assessment
2024/25 online tax returns
Corporation Tax returns
31 January 2025 year ends
Plastic Packaging Tax
Return and payment quarter-end 31 December
EFRBS
Report schemes starting in 2024/25
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