Understanding Tax Deadlines in the UK
Missing a UK tax deadline can trigger penalties, interest and avoidable stress — whether you are self-employed, a landlord, director or employer.
Introduction
Deadlines differ by structure, registrations and reporting duties.
Below is a practical map of the most common filing and payment themes; always confirm personalised dates on HMRC, Companies House or your software.
Self Assessment deadlines
For the 2024/25 tax year, HMRC stated online Self Assessment returns must be filed by 11:59pm on 31 January 2026, with an earlier date (30 December 2025) where tax is to be collected via PAYE codes. Check GOV.UK for each tax year.
Corporation Tax deadlines
Limited companies usually pay Corporation Tax 9 months and 1 day after the accounting period end and file the Company Tax Return 12 months after period end (GOV.UK).
Annual accounts deadlines
Private limited companies usually file annual accounts with Companies House within nine months of the financial year end; first accounts can differ.
Confirmation statement deadlines
Companies House requires at least one confirmation statement every 12 months; the review window usually ends 12 months after incorporation or the last statement (GOV.UK).
VAT deadlines
VAT deadlines depend on your stagger, scheme and channel. Use your HMRC VAT account or MTD software calendars for exact dates.
PAYE deadlines
Employers report via RTI on or before payday (GOV.UK). Payment timetables vary for monthly, quarterly or electronic payers — follow HMRC guidance for your scheme.
How to stay organised
Layer cloud accounting, bookkeeping discipline, calendar reminders and a monthly compliance review — avoid leaving everything to the final week.
How DepoTax can help
DepoTax assists individuals and businesses with deadline planning across accounts, VAT, payroll, Self Assessment and Corporation Tax.
Frequently asked questionsFAQ
Why do Corporation Tax payment and filing deadlines differ?
Payment is usually due before the Company Tax Return filing deadline — plan accounts early so cash flow matches your CT date.
How often must a confirmation statement be filed?
Companies House requires at least every 12 months in the review window — even if details are unchanged.
Where can I verify exact dates?
HMRC and Companies House publish authoritative deadlines; use your online accounts and software reminders as well.
Can DepoTax track deadlines for me?
Yes — calendar planning across accounts, VAT, payroll, Self Assessment and corporation tax.
Related DepoTax services
Contact DepoTax for tailored advice.