Guide to Late Filing Penalties for UK Limited Companies

Late filing penalties for UK limited companies affect thousands of businesses every year. Between 2024 and 2025, Companies House issued 317,985 penalties for late filing of accounts, with total fines reaching £34.4 million in the 2023 to 2024 tax year alone. This guide explains everything you need to know about late filing penalties for UK limited companies and how to avoid them.

What Triggers Late Filing Penalties?

Late filing penalties are issued by Companies House when a company fails to submit filing documents by their legal deadlines. The main filings that attract penalties are annual accounts to Companies House and Company Tax Returns to HMRC. These obligations apply to all companies registered in the UK, whether they are trading, dormant, large or small. The information companies file becomes part of the public record, so timely submission matters to investors, creditors and other stakeholders who rely on that data to make decisions.

If you are new to running a limited company, it is important to read the annual filing requirements for a company so that you understand exactly what must be submitted and to which authority. 

Companies House and HMRC Late Filing

Companies House maintains the public register and requires companies to submit annual accounts and confirmation statements. HMRC is the tax authority and requires companies to submit Corporation Tax returns and pay Corporation Tax on time.

Filing on time with one authority does not satisfy your obligations to the other. Each body operates its own penalty regime, and penalties can be applied by both at the same time if you are late with multiple filings. This means a company that misses both its accounts deadline and its tax return deadline will face penalties from Companies House and HMRC simultaneously.

The deadlines also differ, as follows:

• Private companies: file annual accounts to Companies House within 9 months of the accounting reference date.
• First accounts: file within 21 months of incorporation, or within 3 months of the accounting reference date, whichever is later.
• Company Tax Return (CT600): file to HMRC within 12 months of the end of the Corporation Tax accounting period.
• Corporation Tax: pay within 9 months and 1 day of the end of that period.

Adding these tax year dates and filing deadlines into your calendar early can prevent avoidable penalties.

How Much Are Companies House Late Filing Penalties?

Companies House issues automatic penalties when accounts are filed late. The size of the penalty depends on how late the accounts arrive. For private limited companies, the late filing penalties are as follows:

Length of delay	Penalty	Doubled penalty (for consecutive late filing)
Up to 1 month late	£150	£300
More than 1 month, up to 3 months late	£375	£750
More than 3 months, up to 6 months late	£750	£1,500
More than 6 months late	£1,500	£3,000

Public limited companies face much higher penalties, starting at £750 for accounts up to one month late and rising to £7,500 if accounts are more than six months late. Dormant companies must still file accounts and are subject to the same penalties. The fact that a company is not trading does not exempt it from annual filing obligations. Filing dormant company accounts is free, but if you miss the deadline, the same automatic penalties apply.

Will Rejected Annual Accounts Still Trigger a Late Filing Penalty?

Yes, your annual accounts must meet the requirements of the Companies Act 2006 to be considered ‘delivered’. If Companies House rejects your accounts because they are incomplete or incorrectly formatted, such as a missing signature on the balance sheet, you will need to correct and refile them. If the corrected accounts arrive after the original deadline, a late filing penalty will most likely be triggered. 

Confirmation Statements and Strike-Off Risk

Confirmation statements must be filed at least once every 12 months; however, Companies House allows up to 14 days after the statement date. When it comes to what happens if you miss your confirmation statement date, it is important to be aware that, unlike company accounts, there is no automatic penalty if you file a confirmation statement late. However, failing to file it is a criminal offence and can lead to prosecution of the directors and compulsory strike-off of the company.

What Are the HMRC Penalties for Late Company Tax Returns?

HMRC has a separate penalty system for the late filing of Company Tax Returns. The penalties escalate based on how long the return is overdue, as follows:

Length of delay	Penalty
1 day late	£100
3 months late	Additional £100 (total £200)
6 months late	10% of unpaid Corporation Tax, plus HMRC may issue a tax determination
12 months late	Additional 10% of any unpaid Corporation Tax

If your Company Tax Return is late three times in a row, the £100 penalties increase to £500 each. This means a company that repeatedly files late could face a £1,000 penalty for the first three months alone, in addition to the 10 per cent penalties that apply at six and 12 months.

When a return is more than six months late, HMRC issues a tax determination. This is an estimate of how much Corporation Tax the company owes. You cannot appeal against a tax determination. Instead, you must either pay the amount stated or file your return to correct the figure. The tax determination comes with accumulated penalties and interest, which can quickly add up.

What Is the Difference Between Filing Late with HMRC and Paying Late?

Filing your Company Tax Return on time does not mean you have paid your Corporation Tax on time. These are two separate obligations with different deadlines. 

• Corporation Tax payments are due nine months and one day after the end of your accounting period, and
• Company Tax Returns are due 12 months after the end of that period.

If you file the return on time but pay the tax late, HMRC will charge interest on the unpaid amount from the day after the payment was due until the tax is cleared. Late payment can also come with percentage-based penalties if the delay goes beyond certain thresholds. Combining late filing with late payment can result in multiple layers of penalties plus interest on the outstanding tax.

Criminal Consequences for Directors

Not filing accounts or confirmation statements is a criminal offence under section 451 of the Companies Act 2006. Every person who was a director immediately before the end of the filing period commits the offence. It does not matter whether the individual director was aware that the accounts were late, as ‘lack of knowledge’ is not considered a legal defence.

Directors found guilty can be fined, and if they accumulate more than one conviction, particularly three offences within five years, they may face disqualification proceedings preventing them from acting as a director of a UK company. Companies House has been hardening its approach to prosecutions in recent years. In the 2022 to 2023 tax year, 856 company directors were convicted for late filing offences.

How to Appeal a Late Filing Penalty

You can appeal a late filing penalty, but the bar for achieving a successful outcome is high. Companies House will only waive a penalty in exceptional circumstances. Appeals based on the following reasons are unlikely to succeed:

• Your company is dormant
• You cannot afford to pay
• Your accountant was ill
• You relied on your accountant
• These are your first accounts
• You are not familiar with the filing requirements
• Your company or its directors have financial difficulties
• Your accounts were delayed or lost in the post
• The directors live or were travelling overseas
• Another director is responsible for preparing the accounts

Appeals may be successful if an unforeseen event occurred at a critical time, such as a fire or flood destroying records a few days before the filing deadline, or a serious illness preventing filing at the last moment. In the 2024 to 2025 tax year, only around 3% of appeals against late filing penalties were waived by Companies House.

You must appeal before the penalty payment deadline, and Companies House will usually respond within 10 days. 

For HMRC penalties, you must also demonstrate a reasonable excuse. Examples of reasonable excuses include the death of a partner or close family member, a serious or life-threatening illness, a genuine failure of computer hardware or software, problems with HMRC or Companies House online filing services, fire, flood or theft, and delays related to a disability or mental illness. Simply telling HMRC that you made a mistake or did not receive an email reminder is not sufficient. You must appeal within 30 days of receiving the penalty notice, although HMRC may accept a late appeal in some cases.

How to Avoid Late Filing Penalties

Preventing late filing penalties is much easier than dealing with them once they have been imposed. The most effective steps you can take are:

• Add recurring reminders to your calendar well before the filing deadlines. Set multiple alerts, starting one or two months in advance.
• Register with Companies House for email reminders of when filings are due. This also allows you to check that the dates you are working with are correct.
• Engage a reliable accountant or company formation agent who can manage the filing process on your behalf. Professionals understand the requirements and will ensure that documents are prepared and submitted on time.
• Allow plenty of time for filings to reach Companies House before the deadline. Do not assume that a deadline falling on a Sunday or bank holiday gives you extra time; the deadline still applies. First class post does not guarantee next day delivery, so consider using a guaranteed delivery method if the deadline is close.
• File online whenever possible. Online filing is faster and reduces the risk of errors or delays compared to paper submissions.

If you use an accountant or agent to prepare and file your documents, remember that it is still your legal responsibility as a director to ensure they are filed on time. You should check in advance that everything is on track rather than waiting until the deadline has passed.

Final Words

Late filing penalties apply to all companies, including those that are dormant or not trading. The financial and personal cost of late filing penalties can be substantial, but entirely avoidable through early planning and clear responsibility. Directors who set reminders months in advance, engage reliable advisers and verify deadlines can personally protect themselves against the potential for late filing penalties.