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.
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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