Every UK business director needs to know their Companies House filing deadlines. Miss one, and you face automatic penalties that can escalate quickly. Miss several, and you risk prosecution, credit rating damage, and even company dissolution. As we navigate through 2026, understanding these critical deadlines and managing them effectively has become essential for business survival.

Annual Accounts Filing Deadline

Your annual accounts filing deadline is one of the most important dates in your company calendar. This deadline determines when you must submit your statutory accounts to Companies House, and the consequences of missing it are severe.

Private limited companies have nine months from their financial year end date to file accounts. If your financial year ended on December 31, 2025, your accounts must be filed by September 30, 2026. Public limited companies face a tighter six-month deadline from their year end date.

The penalty structure for late accounts is automatic and escalating. File up to one month late and you pay 150 pounds. Between one and three months late increases the penalty to 375 pounds. Three to six months late costs 750 pounds. Anything over six months late results in a 1,500 pound penalty for private companies, with public companies facing double these amounts at every tier.

Beyond financial penalties, late accounts damage your company’s public reputation. Anyone can view your filing history at Companies House. Potential investors, lenders, and business partners routinely check these records before engaging with your company.

Confirmation Statement Deadline

Your confirmation statement must be filed at least once every 12 months. This filing confirms your company’s registered information including directors, shareholders, registered office address, and business activities.

The deadline falls 12 months after your company incorporation date or 12 months after your last confirmation statement filing. Unlike accounts, which calculate from your financial year end, confirmation statements operate on a rolling annual cycle based on actual filing dates.

Companies House allows a 14-day grace period after your confirmation date to file the statement. However, relying on this grace period creates unnecessary risk. Technical issues, payment problems, or last-minute complications can easily consume those extra days.

Penalties for late confirmation statements start with automatic fines and can escalate to prosecution for persistent non-compliance. More seriously, Companies House can strike off companies that fail to maintain their confirmation statement obligations, effectively dissolving your business without further warning.

Change of Director Notification Deadline

When director changes occur, you must notify Companies House within 14 days. This tight deadline catches many companies off guard, especially during periods of rapid organizational change.

Director appointments require filing form AP01 within 14 days of the appointment taking effect. Director resignations need form TM01 filed within the same timeframe. Changes to director details such as residential address or service address also require prompt notification.

Failing to report director changes within the 14-day window constitutes a criminal offense. Both the company and individual directors can face prosecution. The offense creates a permanent mark on your company record and can affect directors personally in future business ventures.

Change of Registered Office Address Deadline

If your company moves its registered office, you must notify Companies House within 14 days of the change. This deadline is firm and strictly enforced because your registered office is where Companies House and HMRC send all official correspondence.

Using form AD01, you must provide your new registered office address and confirm the effective date of the change. Until Companies House processes this notification, all official mail continues to your old address. Missing important correspondence because of unreported address changes can trigger additional compliance problems.

Many companies relocate without immediately updating their registered address, assuming they can notify Companies House later. This approach creates significant risk. You might miss critical deadline notifications, penalty warnings, or legal documents sent to your old address.

People with Significant Control Updates Deadline

Your PSC register must be kept accurate and up to date at all times. When changes occur in who controls your company, you have 14 days to update the register and 14 days to notify Companies House.

This includes changes to existing PSC details, new PSCs joining, or PSCs ceasing to have significant control. The tight deadline reflects the importance of transparency in company ownership for anti-money laundering and financial crime prevention.

Failing to maintain accurate PSC information carries serious penalties. Companies can face fines up to the statutory maximum. Individual directors responsible for PSC compliance can face personal prosecution and unlimited fines.

Why Traditional Deadline Tracking Fails

Most UK business owners start with good intentions. They create calendar reminders, rely on accountant notifications, or maintain spreadsheets of upcoming deadlines. These methods share a critical weakness: they depend entirely on manual effort and perfect memory.

Calendar reminders work only if you calculate deadlines correctly in the first place. One miscalculation, and your reminder appears on the wrong date. Email notifications from accountants get lost in busy inboxes or filtered to spam folders. Spreadsheets require constant manual updating and offer no proactive alerts.

For directors managing multiple companies, these challenges multiply exponentially. Each company operates on different filing cycles with unique deadlines. Tracking everything manually creates overwhelming administrative burden and significant error risk.

How Mobile Technology Eliminates Filing Deadline Anxiety

Modern deadline management requires modern solutions. The UK Companies House On The Go app automates deadline tracking for all your Companies House obligations, eliminating manual calculations and memory dependence.

The app monitors your confirmation statement deadlines, accounts filing dates, and provides reminders for critical administrative actions. Multi-stage alerts give you weeks of advance warning, progressive reminders as deadlines approach, and final urgent notifications before penalties apply.

For directors managing multiple companies, the app consolidates all deadlines into a single dashboard. View every upcoming obligation across your entire portfolio at a glance. Customize alert preferences for different companies based on their complexity or your involvement level.

The UK Companies House On The Go app provides instant access to company information, filing histories, and deadline confirmations. Your phone becomes a complete compliance management tool that travels with you wherever business takes you.

Download Today and Protect Your Business

Stop risking penalties through manual deadline tracking. Take control with technology designed specifically for UK company compliance.

Download the App:

App Store: https://apps.apple.com/in/app/uk-companies-house-on-the-go/id6743302358

Google Play: https://play.google.com/store/apps/details?id=com.companiesonthe.go

Join thousands of UK company directors who have eliminated deadline anxiety and protected their businesses from fines. Download the UK Companies House On The Go app now and never miss another Companies House filing deadline.