As we move through 2026, UK company directors and accountants face one of the most significant years for compliance changes at Companies House. With fee increases kicking in from February, mandatory identity verification rolling out fully, and the usual annual filings like confirmation statements and accounts, staying organised is crucial to avoid penalties, strike-off risks, or extra costs.
Many businesses manage multiple companies or clients, making it easy to miss a date amid daily operations. This essential calendar breaks down the key deadlines for 2026, explains the major changes, and shares practical ways to keep everything on track.
Key Companies House Changes in 2026
First, note the big updates shaping compliance this year.
From 1 February 2026, Companies House fees rise to support modernisation and enforcement under the Economic Crime and Corporate Transparency Act. Digital incorporation jumps from £50 to £100, confirmation statements increase from £34 to £50, while voluntary strike-off drops to £13. Paper filings see even steeper hikes, encouraging everyone to go digital.
Mandatory identity verification, which began phasing in from 18 November 2025, requires all directors and persons with significant control (PSCs) to verify their identity. Existing individuals have until 18 November 2026 at the latest, but must complete it before their next confirmation statement. New appointments need verification upfront. This one-off process, done digitally, helps prevent fraud but adds a step to filings.
These changes aim to make the register more accurate and trustworthy, but they mean extra preparation for directors and accountants handling multiple entities.
Annual Accounts Filing Deadlines
Every private limited company must file annual accounts with Companies House within 9 months of the accounting reference date (ARD), which is usually the end of your financial year.
For most companies, if your ARD is 31 March 2026, file by 31 December 2026. If it is 30 September 2026, the deadline is 30 June 2027.
New companies get more time for first accounts: up to 21 months from incorporation or 9 months after the first ARD, whichever is longer. For example, a company incorporated in early 2025 with an ARD in 2026 might file first accounts in late 2026 or early 2027.
Late filing triggers automatic penalties starting at £150, rising to £1,500 or more depending on delay. Even dormant companies must file, often simpler micro-entity accounts.
Corporation Tax links closely, with payment due 9 months and 1 day after the accounting period end, and the CT600 return within 12 months.
Confirmation Statement Deadlines
The confirmation statement (CS01) is required at least once every 12 months to confirm company details like directors, PSCs, address, and share capital are up to date.
The review period starts on incorporation date or the last statement date, ending 12 months later. File within 14 days of that end date.
For instance, if incorporated on 1 January 2025, the first statement date is around 31 December 2025, with filing by mid-January 2026. Subsequent ones follow annually.
There are no automatic financial penalties for late confirmation statements, but it is a criminal offence, and Companies House can issue warnings, prosecute, or strike off the company. With identity verification now required before filing, delays here can block submissions.
You can file early to reset the period if needed, but plan around your anniversary.
Other Important Compliance Dates in 2026
- Fee change effective date: 1 February 2026 – submit filings before this to lock in current rates where possible.
- Identity verification final window: Complete by 18 November 2026 for existing directors/PSCs, tied to confirmation statements.
- Ongoing monitoring: Check your company’s public register on Companies House for exact dates, as they are personalised.
Extensions for accounts are possible in exceptional cases (serious illness, disasters), but apply early via the online service.
Why Real-Time Alerts Make Compliance Easier
Juggling these deadlines across clients or companies is challenging, especially with 2026’s reforms adding layers like verification and higher fees. Missing one can cascade into fines, admin headaches, or reputational damage.
The UK Companies House On The Go app simplifies this for directors, accountants, and business owners. It pulls real-time data from Companies House, sending instant notifications for upcoming deadlines, overdue filings, officer changes, and history updates.
Features include quick searches, favourites for tracking multiple companies or clients, priority lists, and secure, GDPR-compliant data. Whether monitoring confirmation statements, accounts, or verification requirements, having alerts on your phone keeps you proactive without constant manual checks.
Final Thoughts: Prepare and Stay Ahead in 2026
2026 brings higher fees, stricter verification, and the same core deadlines for accounts and confirmation statements. Map your companies’ ARDs and statement dates now, verify identities early, and file digitally to minimise costs.
Tools like the UK Companies House On The Go app turn compliance from a chore into a manageable routine with real-time reminders and easy tracking.
Download the app today to get ahead of your 2026 obligations.
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