What are year-end accounts in 2026/27? UK Statutory Guide

For corporate practitioners operating in the 2026/27 financial year, preparing statutory financial reports demands strict compliance with evolving corporate and tax legislation. When advising corporate clients, defining exactly what are year-end accounts is the first step in navigating the dual reporting obligations owed to Companies House and HM Revenue & Customs (HMRC).

The legal framework governs not just the contents of these accounts, but the digital format in which you must file them. Following the closure of legacy HMRC portals and the introduction of new financial thresholds for 2026/27, the compliance landscape has fundamentally shifted.

The Legal Definition and Core Components

Year-end accounts are the statutory financial reports that detail a company’s financial performance and position over a specified period. Under section 394 of the Companies Act 2006 (CA 2006), the directors of every company must prepare accounts for the company for each of its financial years.  The legislation formally refers to these as the company’s “individual accounts” or “annual accounts”.

Under section 396 of the CA 2006, these individual accounts must comprise, at a minimum:

• A balance sheet as at the last day of the financial year.
• A profit and loss account for the financial year.

Additionally, the accounts must state the part of the UK in which the company is registered, the company’s registered number, whether it is a public or private company, and the address of its registered office.

The “True and Fair View” Standard

Directors cannot merely assemble figures; they must meet a strict qualitative standard. Section 396(2) of the CA 2006 dictates that the balance sheet and profit and loss account must give a “true and fair view” of the state of affairs and the profit or loss of the company.

In The Union Castle Mail Steamship Company Ltd v HM Revenue and Customs, the Court of Appeal confirmed how practitioners must achieve this standard in practice:

If accounts are prepared in accordance with section 396, they must be prepared in accordance with requirements laid down in regulations and, in order to comply with section 393(1), it is generally taken that they will give a true and fair view if they are prepared in accordance with the Financial Reporting Standards issued by the Financial Reporting Council... In their totality, these requirements constitute UK GAAP.”

2026/27 Exemption Thresholds: Audit and Micro-Entities

Not all companies must prepare fully audited accounts. The government recently updated the size thresholds that dictate the complexity of the year-end accounts required.

For accounting periods beginning on or after 6 April 2025 (affecting accounts filed during 2026/27), the exemption limits significantly increased.

• Small Company Audit Exemption: A company qualifies as small and is generally exempt from a statutory audit if its annual turnover does not exceed £15 million, and its balance sheet total does not exceed £7.5 million.
• Micro-Entity Accounts: The thresholds to qualify as a micro-entity (allowing the company to prepare highly simplified accounts) increased to £1 million for turnover and £500,000 for the balance sheet total.

If a company qualifies as a micro-entity, section 396(2A) of the CA 2006 applies a statutory presumption that its simplified minimum accounting items automatically give the required true and fair view.

Dual Filing Destinations and Deadlines

Once the directors approve the year-end accounts, you must submit them to two separate government bodies, each with distinct deadlines.

1. Companies House (9 Months)

Section 441 of the CA 2006 imposes a duty on directors to deliver the accounts to the registrar (Companies House).  Under section 442 of the CA 2006, the standard period allowed for filing for a private company is exactly nine months after the end of the relevant accounting reference period.

2. HMRC (12 Months)

A company must also deliver a copy of its accounts to HMRC as an integral part of its Corporation Tax Self Assessment return (CT600).  Crucially, while a small company may choose to file reduced or “filleted” accounts with Companies House under section 444 of the CA 2006 (removing the profit and loss account), HMRC strictly requires the full statutory accounts prepared for the members.  The standard filing deadline for the HMRC return is 12 months after the accounting period ends.

The 2026 Digital Mandate and Escalating Penalties

Filing year-end accounts in the 2026/27 tax year requires adherence to strict new technological mandates and severe penalty frameworks.

The End of CATO and the iXBRL Mandate

From 1 April 2026, HMRC permanently closed its free “CATO” (Company Accounts and Tax Online) filing service. Consequently, directors and practitioners can no longer rely on government web portals to submit their filings for free. You must now use commercial, third-party software to submit both the tax return and the year-end accounts in the mandatory iXBRL format.

2026 Penalty Increases

Missing the statutory deadlines exposes the company to two separate penalty regimes:

• Companies House: Missing the 9-month deadline triggers an automatic civil penalty starting at £150 (for up to 1 month late) and rising to £1,500 (for over 6 months late). These penalties automatically double if the company files its accounts late in two successive financial years.
• HMRC: For Corporation Tax returns due on or after 1 April 2026, the initial flat-rate late filing penalty increased to £200.

Summary Table: Year-End Accounts 2026/27

For completeness, practitioners must review their clients’ rolling turnover limits against the newly expanded £15m and £1m size thresholds to ensure clients are not unnecessarily paying for statutory audits or full UK GAAP disclosures when they legally qualify for exemptions.