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Companies House Filing Requirements

BusinessLast reviewed: 1 April 20256 min

Every private limited company in the UK must make certain filings at Companies House. Missing deadlines can result in automatic financial penalties and, eventually, your company being struck off the register. This guide covers the key obligations.

Important

Late filing penalties are applied automatically — Companies House does not send a warning before applying them. Set calendar reminders for all filing deadlines well in advance.

Key points

  • Annual accounts must be filed at Companies House within 9 months of the company's accounting reference date.
  • A Confirmation Statement (formerly the Annual Return) must be filed at least once every 12 months — it costs £34 online.
  • Any changes to directors, shareholders, or the registered office must be notified to Companies House within 14 days.
  • Late filing of annual accounts results in automatic penalties from £150 to £1,500 depending on how late the accounts are.
  • Failure to file can lead to Companies House striking off the company, which also dissolves any assets into the Crown.
  • All companies must maintain a PSC (People with Significant Control) register and file updates at Companies House.

Filing Annual Accounts

Every limited company must prepare and file annual accounts at Companies House each year. These must give a true and fair view of the company's financial position. The accounts are made publicly available on the Companies House register.

Key deadlines:

  • New companies: First accounts must cover the period from incorporation to the accounting reference date and must be filed within 21 months of incorporation (or 9 months after the accounting reference date, whichever is sooner)
  • Established companies: Accounts must be filed within 9 months of the accounting reference date (the end of the company's financial year)

Most small companies (turnover below £10.2 million, balance sheet below £5.1 million, fewer than 50 employees) qualify to file micro-entity or abridged accounts — simplified versions that contain less detail than full statutory accounts. Micro-entities (turnover below £632,000, balance sheet below £316,000, under 10 employees) can file even simpler accounts with no profit and loss statement.

Late filing penalties are automatic:

  • Up to 1 month late: £150
  • 1–3 months late: £375
  • 3–6 months late: £750
  • More than 6 months late: £1,500

These penalties double if the company was late in the previous year.

Confirmation Statement

The Confirmation Statement (CS01) must be filed at least once every 12 months. It confirms that the information held at Companies House about your company is accurate and up to date. You can file at any point within the 12-month review period. The fee is £34 online (or £62 by paper).

The Confirmation Statement covers:

  • Registered office address
  • Registered email address (mandatory from March 2024)
  • Directors and company secretary details
  • Shareholders and share capital
  • SIC code (Standard Industrial Classification — the type of business activity)
  • PSC (People with Significant Control) information

If any information has changed since the last Confirmation Statement, you should update it at Companies House separately (rather than through the CS01) and then confirm it is correct in the Confirmation Statement. Failure to file the CS01 is a criminal offence and can lead to the company being struck off.

Event-Driven Filings

In addition to annual filings, you must notify Companies House within set timeframes whenever certain changes occur:

  • Change of registered office address: File form AD01 within 14 days — the new address must be in the same part of the UK as the company was incorporated (England and Wales, Scotland, or Northern Ireland)
  • Appointment of a new director: File form AP01 within 14 days
  • Resignation or removal of a director: File form TM01 within 14 days
  • Change of director's details (name, address): File form CH01 within 14 days
  • Share allotment: File form SH01 within one month
  • Transfer of shares: Update the register of members — Companies House does not need to be notified of private share transfers separately (the change is picked up in the next Confirmation Statement)
  • Change of company name: File a special resolution and pay a fee (£30 online)

All filings can be made online through the Companies House WebFiling service or by post. Online filing is faster and cheaper.

People with Significant Control (PSC)

Since 2016, all limited companies must maintain a PSC register and submit PSC information to Companies House. A Person with Significant Control is broadly someone who:

  • Holds more than 25% of shares or voting rights
  • Has the right to appoint or remove the majority of the board of directors
  • Otherwise exercises significant influence or control over the company

PSC information must be kept up to date at Companies House. If the PSC changes (for example, someone acquires more shares and crosses the 25% threshold), you must file the update at Companies House within 14 days.

Where a company has no PSC (which is uncommon), this must also be registered and confirmed at Companies House. Failure to maintain and file PSC information is a criminal offence for both the company and its officers.

Frequently asked questions

Do I need an accountant to file at Companies House?
You are not legally required to use an accountant. Many sole-director small companies file their own accounts and Confirmation Statements using Companies House's free WebFiling service and HMRC's free software. However, preparing accurate statutory accounts requires accounting knowledge. If you are not confident in bookkeeping, using an accountant for at least the annual accounts is advisable — errors in filed accounts can be costly to correct.
My company has not traded since incorporation. Do I still need to file?
Yes. A dormant company still has full Companies House filing obligations, including annual accounts (dormant company accounts are simplified) and Confirmation Statements. You should also file a Corporation Tax return with HMRC, though no tax will be due. Consider formally dissolving the company through voluntary strike-off if it will not trade, to remove the ongoing filing burden.
Can I apply for more time to file accounts?
In limited circumstances, you can apply to Companies House for a short extension before the deadline passes. Extensions are only granted for genuine reasons such as a fire or natural disaster affecting the company's records, or the death of a key person responsible for filing. Changes in your accountant, software problems, or cash flow issues are not grounds for an extension. Apply as early as possible if you think you may miss a deadline.
What happens if my company is struck off for non-filing?
If Companies House strikes off your company for failure to file, the company ceases to exist as a legal entity. Any assets owned by the company (including bank accounts, property, or intellectual property) automatically become the property of the Crown (a process called "bona vacantia"). You can apply to Companies House to have the company restored, but this is costly and time-consuming. Prevention is far better than restoration.
What happens if you miss the Companies House filing deadline?
Late filing penalties are applied automatically, with no warning. For private companies, the penalty for accounts filed up to one month late is £150; it rises to £375 for up to three months late, £750 for up to six months late, and £1,500 beyond six months. Penalties double if the company files late in two consecutive years. If the company continues to fail to file, Companies House will move towards striking it off.
Can you file company accounts yourself without an accountant?
Yes. Small companies can file abridged or micro-entity accounts directly through the Companies House WebFiling service, and the filing itself is free (only the Confirmation Statement carries a fee of £34 online). However, you must be confident the accounts comply with the relevant financial reporting standard — FRS 102 Section 1A for small companies, or FRS 105 for micro-entities. Many directors find it more cost-effective and lower risk to use an accountant.

What to do next

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    Check your filing deadlines

    Search for your company to check its current filing record and upcoming deadlines.

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Official bodies and resources

Companies House

Government

Incorporates and dissolves limited companies, registers company information, and makes it available to the public.

HM Revenue & Customs

Government

Responsible for collecting taxes, paying some forms of state support, and administering national insurance.

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Disclaimer

This information is for general guidance only and does not constitute legal advice. You should seek qualified legal help if your situation requires it.