What Are the Filing Requirements for UK Limited Companies?

What are the filing requirements for UK limited companies?

UK limited companies must file a confirmation statement, updates to company details, and annual accounts with Companies House, and a Corporation Tax Return with HMRC each year. Directors are legally responsible for meeting all filing deadlines. Non-compliance, such as missing deadlines, can result in penalties, prosecution, reputational damage, or even the company being struck off the register.

Running a UK limited company means meeting strict filing responsibilities. Whether you’re a first-time business owner or a seasoned director of a small and medium-sized enterprise (SME), understanding what needs to be filed and when is essential for staying compliant and protecting your company’s reputation.

Missing key UK company filings can jeopardise your credibility, strain relationships with stakeholders, and in some cases, result in the closure of your business.

In this guide, we break down your company's legal filing obligations and how to stay on top of them.

Key Takeaways

Directors are responsible for meeting a company’s filing requirements.
Late or missing filings can lead to director prosecution, reputational damage, and even the forced dissolution of the company.
Dormant companies are not exempt from filing requirements – they must still submit required filings to Companies House.

What does my UK limited company need to file each year?

Every limited company must complete certain company filings with two core UK authorities: Companies House and HM Revenue & Customs (HMRC). Companies House is the registrar that handles company registration and keeps records of your company’s details. In contrast, HMRC is the UK’s tax office, responsible for collecting taxes from individuals and businesses.

There are two types of filings companies need to make:

Annual filings – routine yearly submissions like your annual accounts, confirmation statement, and a Corporation Tax Return.
Ad-hoc filings – required as and when needed, usually when key company details change (such as the resignation of a director).

The responsibility to submit these filings generally rests on the company’s directors. Even if someone else handles the filing, such as an accountant, directors remain legally responsible.

What happens if I miss my company filing deadlines?

It’s essential not to miss your company filing deadlines. While this can sometimes be easy to do, the consequences can be far from minor. Missing some filings, such as the annual accounts, can automatically incur financial penalties. Other penalties can include prosecution of the directors, a negative impact on your business credit rating, and even the forced closure of your company.

There can also be reputational damage, including with your partners, investors, and customers. For example, an investor may doubt your credibility or question the investability of your company.

What is the Confirmation Statement?

Submit to:	Companies House
Type:	Annual filing
Deadline:	14 days after your review period

The confirmation statement (Form CS01) is a key annual filing that confirms:

Your company is still active and required to submit filings
Certain company details (see below)
All other information on the public record about the company is correct
The company’s future activities are lawful

The information you can report or update using this form is as follows:

Business activities – what your company is doing.
Trading status of shares – whether they have been admitted to trading on a market (for most companies, this will be “no”).
Statement of capital – a summary of the company’s shares.
Shareholder list – their names, number of shares, and any transfers that have taken place.

Filing a confirmation statement is a simple yet essential step for compliance. The deadline is based on your review period.

The review period starts on either your incorporation date or the day after your last confirmation statement (whichever is later). It typically lasts 12 months. For example, a company formed on 1 August 2026 would have a statement date of 31 July 2027 and a filing deadline of 14 August 2027.

If you file early, your next confirmation statement dates will reset based on the new statement date.

The confirmation statement carries a filing fee of £34 if submitted online. This can be done directly through Companies House, although we recommend using a provider like Company Formations Direct.

Late filing is a criminal offence. There’s no automatic fine, but directors do risk prosecution, reputational damage, and the company being struck off by Companies House.

How to file UK company accounts: Steps and deadlines

Submit to:

Companies House and HMRC

Type:

Annual filing

Deadline:

Companies House – 9 months after your accounting period (except for your first set of accounts, which are due 21 months from the date of incorporation).

HMRC – 12 months after the accounting period ends

You must file your company’s annual accounts each year to show its financial performance. Generally, your annual accounts include the following:

Profit and loss account – a summary of your company’s income, costs and profits.
Balance sheet – a snapshot of everything your company owns and owes on the last day of the financial year.
Directors’ report – a statement from the directors explaining the company’s goals, performance and key decisions.
Auditors’ report – an independent check confirming whether the accounts are accurate.
Notes to the accounts – extra details that explain specific numbers or accounting decisions.

Small companies and micro-entities that are exempt from audit can choose to file abridged accounts (balance sheet and supporting notes only). This means that the information available about most companies on the public record is limited.

Except for your first year, you must file your company accounts within nine months of your accounting reference date (ARD), which is automatically set as the month-end of your company’s incorporation anniversary. The deadline for submission is nine months after the ARD. The exception is your first set of accounts, due 21 months after incorporation.

New company example:

Date	Deadline/Event
3 October 2026	The company is incorporated
31 October 2027	Accounting reference date (end of first financial period)
3 July 2028	Deadline for the first set of accounts
31 October 2028	Accounting reference date (end of second financial period)
31 July 2029	Deadline for the second set of accounts

Missing the deadline triggers automatic fines, which increase depending on how late your accounts are (measured from the filing deadline to the eventual submission date). Fines start at £150, rising to £1,500 if they’re not paid within 6 months. If you file late twice in a row, the fines double. These fines can be appealed, but are rarely waived without exceptional circumstances.

Consequences of late filing

As with the confirmation statement, failing to file your accounts is a criminal offence, exposing directors to prosecution. It can also lead to Companies House closing your company, damage to your credit rating, and harm to your reputation. HMRC may also flag your business for audit if filings are repeatedly late.

There is no filing fee for submitting your accounts; you can do so directly through Companies House or via approved accounting software.

Timely, well-prepared accounts show professionalism and support better financial decisions. Despite this, many companies still miss deadlines, with late filings appearing to be on the rise.

What is the Corporation Tax Return (CT600)?

Submit to:	HMRC
Type:	Annual filing
Deadline:	12 months after the accounting period ends

Every active UK limited company is required to file a Corporation Tax Return (the form CT600). This is used to report your company’s:

Income
Expenses
Tax calculations
Reliefs claimed
Allowances claimed

The return needs to be submitted within 12 months of the end of the accounting period. Generally, the accounting period with HMRC aligns with your accounting period at Companies House, although in rare cases, they may diverge. The annual accounts should also be submitted along with the return.

Failure to file on time will result in automatic financial penalties.

Corporation Tax Return is late by	Penalty
1 day or more but less than 3 months	£100
3 months or more but less than 6 months	An additional £100
6 months or more but less than 12 months	10% penalty based on unpaid tax (estimated by HMRC)
12 months or more	A further 10% penalty based on unpaid tax (estimated by HMRC)

There’s no filing fee for submitting your Corporation Tax Return, and it can be delivered using approved accounting or tax software. Submission through HMRC directly is still possible; however, this service is due to close on 31 March 2026.

Other filings – Staying accurate as your company evolves

Companies House needs to be updated whenever certain changes take place in your company. This should be carried out using the relevant form, for example:

Appointment of new director (e.g. Form AP01 or AP02)
Resignation of a director (Form TM01)
Changes to the company’s registered office address (Form AD01)
Changes to the company’s share capital (e.g. Form SH08)
Changes to the company’s people with significant control (e.g. PSC01)

Each filing has its own deadline; for example, a new director must be reported to Companies House within 14 days of their appointment.

Although these filings may not be required as frequently as annual submissions, they are equally important. Generally, filing late is an offence, and the company’s directors risk prosecution. Reputational damage is also possible, given their public nature.

Limited company filing requirements for dormant companies

Companies House defines a company as dormant if it has had no significant accounting transactions. Significant account transactions mean anything that needs entering the company’s account books (i.e. when it generates income, receives interest, pays expenses, etc.).

Even if your company is dormant, you must still submit your confirmation statement, accounts, and updates to your company details to Companies House. Most dormant companies are eligible to submit dormant company accounts, which are a simplified form of accounts that include only a basic balance sheet and are quicker to file. The same Companies House deadlines (and late penalties) apply for dormant companies as they do to active companies.

HMRC defines dormancy in a slightly different way. In their eyes, you are dormant if you are not trading. If your company meets this definition, you must tell HMRC. They will usually then confirm you don’t need to submit a Corporation Tax Return. If they don’t, you must submit one.

Additional filings your UK company might need

If your company is VAT-registered, you must file VAT Returns (usually every quarter). These are due one month and seven days after the end of each VAT period. Late submissions incur penalty points, resulting in surcharges for frequent delays.

If your company pays staff or directors through payroll, you must run PAYE and send Real Time Information (RTI) reports to HMRC. These reports, usually a Full Payment Summary (FPS), must be submitted on or before each payday and show how much you’ve paid, along with any tax and National Insurance deducted.

Most companies are also required to register with the Information Commissioner’s Office (ICO) and pay an annual data protection fee, typically ranging from £40 to £60.

Additionally, if you're a company director or receive income through dividends as a shareholder, you may need to submit a personal Self Assessment tax return by 31 January each year.

Should I file company documents online or by post?

Some filings can be submitted by post; however, electronic filing is strongly advised. It’s faster, more secure, and reduces the risk of errors or rejection.

HMRC only accepts paper tax returns if you have a valid reason, such as a serious or life-threatening illness. Companies House permits paper-based filings but plans to phase them out in the future.

A summary of what a UK limited company must file each year

Below is a summary of the limited company filing requirements most UK limited companies will have:

Filing	Frequency	Deadline	Companies House	HMRC
Confirmation statement	Annual	14 days after the confirmation date	Yes
Annual accounts	Annual	9 months after the accounting reference date (except the first set of accounts, which are due 21 months after incorporation)	Yes	Yes
Corporation Tax Return	Annual	12 months after the end of the accounting period		Yes
Changes to the company’s details	As-and-when	Varies, dependent on the change.	Yes

Be aware of additional filings, such as ICO registration, VAT returns, PAYE submissions, and Self Assessment filings. Some companies will also need to submit these, and they will have their own deadlines.

How to stay compliant with your UK company filings

It’s best to take a proactive approach to ensure you do not miss your company’s filing deadlines:

Use accounting software (such as Xero) or your formation agent’s portal for automated deadline reminders, submission checks, and error alerts.
Sign up for Companies House and HMRC email reminders.
Keep a filing calendar that updates with your company’s key deadlines.
Work with a compliance service (e.g. Company Formations Direct) or accountant to stay ahead of complex or event-driven filings, especially for structural changes.

Stay compliant and protect your company

Mastering limited company filing requirements is both good practice and a legal safeguard. After all, timely filings and accurate records underpin your company’s credibility and compliance.

With new powers introduced under the Economic Crime and Corporate Transparency Act 2023, Companies House now plays a more active enforcement role. Directors showing a pattern of non-compliance may face fines and even disqualification. Repeat offenders risk being struck off entirely. These new powers signal a more stringent regulatory landscape, where consistent compliance is essential.

Ready to start your company? Register your business with Company Formations Direct and access expert compliance support and deadline tracking from day one.

What’s the difference between the Companies House accounting period and the HMRC accounting period?

While both are usually aligned by default, they can diverge due to delays or changes in filing dates. Companies House sets your accounting reference date based on your incorporation date, whereas HMRC may adjust your accounting period if your trading start date differs. Always check both timelines to avoid discrepancies in filing.

Can I appeal late filing fines if my accountant was responsible for the delay?

Although you can appeal, Companies House and HMRC rarely waive penalties unless there are exceptional circumstances. Delegating filing to an accountant doesn’t transfer legal responsibility – directors remain accountable and must ensure deadlines are met.

My confirmation statement is late, and Companies House are striking off my company. Can I stop this?

Yes, in many cases, you can stop the strike-off process if you act quickly. If your company is in the process of being struck off (and has not yet been closed), you can submit the overdue confirmation statement. Companies House will usually withdraw the dissolution application, and you’ll be able to retain your company. If, however, the company has already been closed, you will need to restore your company via the administrative restoration procedure.

Can I apply for an extension to my deadline?

Generally, the deadlines are fixed and cannot be extended. This includes the confirmation statement, Corporation Tax Returns, and the company changes filed at Companies House. However, in exceptional cases, you can request an extension to the annual accounts (for example, due to serious illness).

Will I be fined for submitting a late confirmation statement?

There are no automatic financial penalties for submitting your confirmation statement late. However, it is a criminal offence not to file the confirmation statement on time. If the directors are prosecuted for their failure, they are liable to receive a fine.