UK Limited Company Annual Accounts: Filing Deadlines, Late Penalties, and How to Stay Compliant in 2026

Over 200,000 UK companies are fined by Companies House every year for filing their annual accounts late. The penalties are automatic and non-discretionary: £150 for being a single day late, rising to £1,500 after six months. File late two years running and the penalty doubles. Persistent failure is a criminal offence — directors can be prosecuted, fined personally, and in serious cases disqualified.

Filing annual accounts is not usually complicated for a small company. What trips founders up is the calendar. Companies House and HMRC have overlapping but different deadlines, the first year works differently from every year after it, and "I posted it yesterday" is not the same as "Companies House has accepted it". This is the plain-English, legally-accurate guide to UK limited company annual accounts deadlines, late filing penalties, and how to stay compliant in 2026.

What are annual accounts and who needs to file them?

Annual accounts — sometimes called statutory accounts or year-end accounts — are a set of financial statements that every UK limited company must prepare and file with Companies House at the end of each accounting period. They give a snapshot of the company's financial position: what it owns, what it owes, how much it earned, and how much it spent.

There are two separate audiences, with two separate filings:

• Companies House publishes the accounts on the public register. Anyone — customers, suppliers, investors, competitors — can download them for free. This guide focuses on this filing.
• HMRC uses a separate but related filing (the CT600 Corporation Tax return) to assess how much tax the company owes.

Every active UK limited company must file accounts. Dormant companies must also file — simplified dormant accounts, but accounts nonetheless. There is no size threshold below which filing becomes optional.

What is an Accounting Reference Date (ARD)?

Every annual accounts deadline is calculated from a single date: your company's Accounting Reference Date (ARD). The ARD is the last day of the month in which the anniversary of your incorporation falls. If your company was incorporated on 15 March 2025, your ARD is 31 March. Every accounting period after the first runs for 12 months ending on the ARD.

The ARD matters because it governs:

• When each accounting period ends
• When your Companies House accounts must be filed
• When your Corporation Tax return (CT600) is due
• When any Corporation Tax liability must be paid

You can change your ARD by filing form AA01 at Companies House. Extensions to the accounting period are limited to once every five years and cannot produce a period longer than 18 months. Shortening the accounting period has no such restriction. If you change the ARD, the filing deadline moves with it — provided the change is made before the current deadline passes.

You can look up your ARD and your next accounts due date on the Companies House register, in your company's "Accounts" section.

First accounts vs subsequent accounts: two different deadlines

Your first set of accounts is treated differently from every subsequent set. This is the single biggest source of confusion for new directors.

First accounts (private limited companies)

For a private limited company, the first accounts must be filed at Companies House by the later of:

• 21 months from the date of incorporation, or
• 3 months from the accounting reference date — whichever is longer

For most new companies with a default ARD, the 21-months-from-incorporation rule is the binding one. The "3 months from the ARD" clause only becomes relevant if you have shortened the first accounting period so aggressively that 21 months from incorporation would give you less than 3 months after the period ended.

Subsequent accounts (every year after the first)

After the first set, every future set of accounts is due 9 months after the accounting reference date. No alternative rule, no "whichever is longer". Just 9 months.

Public limited companies (PLCs)

PLCs have tighter deadlines: first accounts are due 18 months from incorporation (or 3 months from the ARD, whichever is longer), and subsequent accounts are due 6 months after the ARD. Most founders reading this guide will be running a private limited company, but if you have incorporated as a PLC, deduct 3 months from every deadline.

A realistic timeline example

Consider a typical first-time founder. Priya incorporates "Acme Analytics Ltd" — a private limited company — on 15 March 2025. She accepts the default ARD (31 March) and does not change it. Here is what her first two years of Companies House and HMRC deadlines look like:

Notice how the first accounts have a generous 21-month runway, but the second set are due just 9 months after the previous period ended. Founders who relax after filing the first set and assume they have another 21 months often miss the second deadline entirely.

Companies House vs HMRC: two sets of deadlines, two sets of penalties

Companies House and HMRC run parallel, independent systems. You file separately to each, they have different deadlines, and each imposes its own penalties for being late. Confusing the two is probably the single most expensive mistake UK founders make.

Also worth remembering: Corporation Tax registration is required within three months of starting business activity — not three months of incorporation. If your company is incorporated but has not yet started trading, the Corporation Tax clock has not begun. But the Companies House accounts clock starts ticking from the day of incorporation regardless. Even a dormant company must file accounts.

Late filing penalties at Companies House: the full schedule

Late filing penalties are automatic, non-discretionary, and levied the moment the deadline passes without accounts having been accepted on the register. There is no warning letter, no invoice first, and no grace period. The penalty scale below applies to private limited companies; penalties for PLCs are higher at every band.

Penalties are levied on the company, not on directors personally — but a director has a statutory duty under section 441 of the Companies Act 2006 to deliver accounts on time. Beyond the civil penalty, persistent or serious failure can lead to personal consequences that are materially worse than the fine itself. We cover those in the next section.

"Received and accepted" — not "posted" or "submitted"

Accounts are not treated as filed until Companies House has received them and accepted them. If you submit accounts on the last day and Companies House rejects them — wrong format, missing signature, arithmetic error, incorrect filing type — the clock does not stop. You have to refile corrected accounts, and if that refile lands after the deadline, the late penalty applies.

In practice this means you should aim to file at least two weeks before the deadline, not the day before. Online filings via the Companies House WebFiling service are typically accepted or rejected within minutes; paper filings take days and should be avoided near a deadline.

What happens if you miss the deadline

The automatic penalty is only the first consequence. The full picture, in order of severity, looks like this:

1. Automatic civil penalty

Imposed the moment the deadline passes. Levied on the company. Payable within 28 days of the penalty notice. Interest accrues on unpaid penalties.

2. Criminal offence

Failing to deliver accounts on time is a criminal offence under section 451 of the Companies Act 2006. The offence is committed by every person who was a director of the company immediately before the deadline. On conviction, directors can face a fine of up to £5,000, and for continued contravention, an additional daily fine. In practice Companies House rarely prosecutes short slips — but for repeat or serious offenders, prosecution is a real and documented outcome.

3. Director disqualification

Repeated failure to file accounts is one of the grounds on which the Insolvency Service seeks disqualification orders against directors under the Company Directors Disqualification Act 1986. Disqualification can run for up to 15 years and prevents the individual from acting as a director of any UK company during that period.

4. Strike-off and loss of the company's assets

If accounts (and the confirmation statement) remain unfiled for long enough, Companies House will begin the process of striking the company off the register. The sequence is:

1. A First Gazette notice is published in the London Gazette, warning of strike-off in two months unless cause is shown.
2. If no response, a second notice follows and the company is dissolved.
3. At dissolution, the company ceases to legally exist. All of its assets — bank balances, intellectual property, domain names, equipment, receivables — become bona vacantia and vest in the Crown.

Recovering assets from the Crown after dissolution is possible but slow and expensive. Administrative restoration costs at least £468 in Companies House fees, requires all overdue filings and penalties to be brought up to date, and takes several weeks. Court-ordered restoration costs significantly more. Over 500,000 UK companies were dissolved in the 2023–24 financial year — not all were involuntary, but a material share were.

Can you get an extension?

Companies House does not grant discretionary extensions as a matter of course. But there are two legitimate routes to more time, and both must be used before the deadline — not after.

Route 1: Change your accounting reference date (form AA01)

Filing form AA01 changes your ARD. Shortening the accounting period is allowed at any time and has no frequency limit. Extending the accounting period is limited to once every five years and cannot produce a period longer than 18 months. A change to the ARD automatically moves the filing deadline.

Route 2: Apply for an extension for a specific reason

If an unforeseen event beyond your control — a fire, serious illness, accountant failure, technology outage — makes it impossible to file on time, you can apply to Companies House for an extension. Key points:

• You must apply before the filing deadline — applications after the fact are refused and the penalty stands.
• The application is free.
• Extensions are discretionary. Companies House will consider the reason, supporting evidence, and the company's filing history.
• "I was too busy" or "my accountant didn't get it done" is not sufficient grounds.

Types of accounts: micro-entity, small, medium, and full

Not every company files the same accounts. The smaller your company, the less you have to disclose publicly. Most early-stage companies qualify as micro-entities or small companies.

Micro-entity accounts

Your company qualifies as a micro-entity if it meets at least two of the following three conditions:

• Turnover of £632,000 or less
• Balance sheet total of £316,000 or less
• 10 employees or fewer

Micro-entity accounts are the simplest filing: a balance sheet with minimal notes, no profit and loss account on the public register, and no director's report. This is what most sole-director startups and freelancer companies will file.

Small company accounts

A company qualifies as small if it meets at least two of:

• Turnover of £10.2 million or less
• Balance sheet total of £5.1 million or less
• 50 employees or fewer

Small companies can file reduced disclosures — typically a balance sheet plus notes — and are generally exempt from audit (subject to specific exceptions, such as being a member of an ineligible group).

Medium and full accounts

Medium-sized companies (turnover up to £36 million, balance sheet up to £18 million, up to 250 employees) file slightly reduced disclosures. Companies above those thresholds file full accounts — a strategic report, director's report, profit and loss, balance sheet, cash flow statement, and notes — and are subject to statutory audit.

Dormant companies must still file

A dormant company — one with no significant accounting transactions during the period — still has to file annual accounts at Companies House. The filing is much simpler: a basic balance sheet with a statement that the company was dormant throughout the period, no audit, no profit and loss on the public record. But "dormant" does not mean "exempt".

A dormant company must also file a confirmation statement every 12 months. Founders frequently forget this, assume a dormant company has no obligations, and only discover the truth when a strike-off warning arrives. Our dormant company compliance checklist covers the full picture.

How to file annual accounts at Companies House: step by step

1. Prepare the accounts in the correct format for your company's size. For micro-entity and small companies, this is usually a balance sheet and notes; for larger companies, a full statutory set.
2. Get board approval for the accounts. The directors must approve the accounts and authorise one director to sign the balance sheet (Companies Act 2006, s. 414). Unsigned or unapproved accounts will be rejected.
3. File online using Companies House WebFiling for most small and micro companies. The service generates the filing in the required iXBRL (inline eXtensible Business Reporting Language) format automatically.
4. Use commercial accounting software for medium or large accounts, or those with more complex financial statements. The software produces iXBRL-tagged accounts for submission through the Companies House API.
5. Wait for acceptance confirmation. Companies House returns an email confirmation once the accounts have been accepted. Only at this point are the accounts considered filed.

Paper filings are still technically possible but strongly discouraged. They are slower, more error-prone, and give no instant confirmation of acceptance. Near a deadline, paper is a liability.

Annual accounts vs the confirmation statement: two different filings

Founders routinely confuse these two Companies House filings. They are separate, they have separate deadlines, and both are mandatory.

• Annual accounts are financial statements — what the company earned, spent, owns, and owes.
• Confirmation statement is a factual snapshot confirming that Companies House's record of your directors, registered office, shareholders, PSCs, and SIC codes is correct.

The confirmation statement is due every 12 months from incorporation (or from the last confirmation statement), with a 14-day filing window after the review period ends. It costs £50 online (or £110 on paper). It must be filed even if nothing has changed — "nothing changed" is itself the confirmation.

Missing the confirmation statement does not trigger an automatic penalty the way late accounts do. Instead, Companies House begins the strike-off process. Our confirmation statement survival guide covers the full timeline, and Filing HQ files it for you with the fee included and the deadline tracked automatically.

Common mistakes directors make

1. Confusing the Companies House deadline with the HMRC deadline. The CT600 is due 12 months after the period end, but accounts are due at 9 months. Founders who work to the 12-month deadline for everything are three months late at Companies House.
2. Assuming "filed" means "accepted". Accounts rejected by Companies House do not count as filed. If you submit on the last day and the filing is rejected, the clock keeps running.
3. Relying on the accountant without checking the deadline. The legal responsibility sits with the directors, not the accountant. "My accountant was late" is not grounds for waiving a penalty.
4. Missing the first-year deadline because it is different. The first set gets a longer runway (21 months from incorporation for most private companies), but founders who assume the 9-month rule applies from year one get tripped up in the second year.
5. Not receiving the Companies House reminder letter. Reminders are sent to the registered office around two months before the deadline. If the registered office is a home address you have moved out of, or a virtual address no one checks, the reminder never reaches you. A proper registered office service with same-day mail scanning solves this. See also our guide on the risks of using your home as a registered office.
6. Assuming dormant means exempt. A dormant company must still file accounts and a confirmation statement.
7. Asking for an extension after the deadline. Extensions must be applied for before the filing date. After the deadline, the penalty is automatic and is not waived on the grounds that an extension was coming.

Identity verification and annual accounts: the ECCTA connection

Since 18 November 2025, every director and Person with Significant Control (PSC) must have their identity verified with Companies House under the Economic Crime and Corporate Transparency Act (ECCTA). Identity verification is not part of the accounts filing itself, but unverified directors face restrictions on what they can file. If the director responsible for approving and signing the accounts has not completed verification, your filing can be blocked at exactly the wrong moment.

Verification is a one-off per individual — it does not need to be repeated each year or for each company. There are two lawful routes: GOV.UK One Login (free, self-service, photo ID and smartphone required) or through an Authorised Corporate Service Provider (ACSP) such as Filing HQ. Filing HQ's identity verification service handles the ACSP route end-to-end. For a full breakdown, see our guide to Companies House identity verification.

Director duties and personal liability for late accounts

Filing accounts on time is a legal obligation of every director, not a best practice. Under section 441 of the Companies Act 2006, the duty to deliver accounts and reports to Companies House rests with the directors. Failure is a criminal offence under section 451.

This sits within the wider set of director duties codified in sections 171–177 of the Companies Act 2006: acting within powers, promoting the success of the company, exercising independent judgement, applying reasonable care and diligence, avoiding conflicts, refusing third-party benefits, and declaring interests in transactions. Keeping filings up to date falls squarely under the duty of care in s. 174.

In insolvency, the stakes escalate. Directors can face personal liability for wrongful trading (s. 214 Insolvency Act 1986) if they allowed the company to continue trading when they knew — or should have known — there was no reasonable prospect of avoiding insolvency. A company with overdue accounts and no clear view of its financial position is arguably a company whose directors should have known sooner.

Statutory registers you must maintain alongside your accounts

Annual accounts are part of a broader record-keeping obligation. Every UK limited company must maintain the following statutory registers under the Companies Act 2006:

• Register of members (shareholders)
• Register of directors
• Register of directors' residential addresses (private, not publicly accessible)
• Register of secretaries — only if one is appointed; private limited companies are not required to appoint a company secretary
• PSC register (People with Significant Control)
• Register of charges

Accounting records must be retained for at least 6 years from the end of the accounting period to which they relate. The public Companies House register is not the legal record of your company — your internal statutory registers are.

Building a compliance calendar that works

Immediately after incorporation

• Note your ARD and calculate your first accounts deadline.
• Set up a registered office address that scans and forwards mail, so you actually receive Companies House reminders.
• Verify the identity of every director and PSC via GOV.UK One Login or an ACSP.
• Start bookkeeping from the first transaction. For the full post-incorporation checklist, see our post-incorporation guide.

Annually

• Confirmation statement — every 12 months, £50 online, 14-day filing window. Filing HQ handles this with deadline tracking and the fee included.
• Annual accounts — 9 months after the ARD (first set: the later of 21 months from incorporation or 3 months from ARD).
• Corporation Tax return (CT600) — 12 months after the end of the accounting period.
• Corporation Tax payment — 9 months and 1 day after the end of the accounting period.

As they happen

• Director changes — file AP01 within 14 days. See our director appointment guide.
• Share issues or transfers — file SH01 and update the register of members. Our share issuance and share transfer services handle the filings.
• PSC changes — file the relevant PSC form and ensure any new PSC completes identity verification.

Frequently asked questions

When are my first annual accounts due at Companies House?

For a private limited company, the first accounts are due the later of 21 months from incorporation or 3 months from the accounting reference date. For most new companies, the 21-months rule is the binding one. You can confirm your exact deadline on the Companies House register under your company's "Accounts" section.

What is the penalty for filing annual accounts late?

£150 for up to one month late, £375 for 1–3 months, £750 for 3–6 months, and £1,500 for more than 6 months. All figures double if the previous year's accounts were also filed late.

Is late filing a criminal offence?

Yes. Failing to deliver accounts on time is a criminal offence under section 451 of the Companies Act 2006. Every director in office at the deadline commits the offence. Prosecution is uncommon for first offences but is a real outcome for repeated or serious failures.

Does a dormant company need to file annual accounts?

Yes. Dormant companies must file simplified dormant accounts — a balance sheet with a statement confirming the company was dormant throughout the period — by the same deadline as any other company. Dormant companies must also file a confirmation statement every 12 months.

Can I get an extension on my accounts filing deadline?

Yes, but you must apply before the deadline. Two routes: change your accounting reference date via form AA01 (limited to once every five years for extensions), or apply to Companies House for an extension on the basis of an unforeseen event beyond your control. Applications after the deadline are refused and the penalty stands.

What is the difference between annual accounts and a confirmation statement?

Annual accounts are financial statements. The confirmation statement is a factual update confirming Companies House's record of your directors, shareholders, registered office, PSCs, and SIC codes. They are separate filings with separate deadlines, and both are mandatory for every UK limited company.

Keep your company compliant without the calendar anxiety

Annual accounts are one piece of a larger compliance puzzle. Between the confirmation statement, identity verification, PSC register, statutory books, and event-driven filings, the administrative overhead of running a UK limited company is real — even for a one-person business with simple finances.

That is why Filing HQ exists. We do not prepare your accounts (that is your accountant's job), but we handle the Companies House side: your confirmation statement, your registered office address so you never miss a reminder, and the identity verification every director and PSC now needs. When something is due, we tell you. When something needs filing, we prepare it. When a deadline is approaching, we chase it — so you can focus on the business.