Profit & Loss Accounts & Digital Filing Are About to Change for Good

Big changes are coming to how UK companies file their annual accounts. And no, this is not just another tweak to accounting rules that fades into the background. From 1 April 2027, every UK-registered company and LLP, even dormant ones, will need to file accounts using commercial software. If you’re still submitting your accounts via the Companies House web portal or through paper forms, it’s time to pivot.

The change comes under the Economic Crime and Corporate Transparency Act (ECCTA) 2023, a wide-ranging law that seeks to modernise company reporting and clamp down on financial crime. Though the headlines may have focused on dirty money and shell companies, the act also marks a big overhaul in how small businesses interact with the public register.

What does it mean for you?

Software or Bust

From April 2027, filing accounts with Companies House will be software-only. That means:

• No more web forms
• No more paper filings
• No more shortcuts

Every type of account, including dormant companies, must be filed using commercial software that meets the new technical requirements. This also includes a requirement for accounts to be tagged using Inline eXtensible Business Reporting Language (iXBRL). In plain English, it means your accounts must be readable by both humans and machines.

This might sound daunting, but the reality is that many accountants already use software to file accounts. So, if you're working with a professional, you might not notice much of a shift, apart from a few extra compliance boxes to tick. However, if you're a small business owner who handles your own accounts, this is your cue to start shopping around for suitable software.

Companies House must have already emailed many businesses before 1 July 2025 to inform them of the upcoming changes. They’ve also released a software look-up tool and a stakeholder guide to help businesses get ready. So, no one can say they weren’t warned.

What You’ll Have to File

The reforms don’t just change how you file; they also change what you need to file, especially if you run a small or micro-entity. Here’s how things will look post-April 2027.

Micro-Entities (Typically Very Small Businesses)

• Must file a balance sheet and a profit and loss account
• Directors' reports remain optional as they've been since 2016

Small Companies

• Must file:

• A balance sheet
• A profit and loss account
• A directors’ report
• An auditor’s report (unless exempt)

What’s Going Away

• The option to file abridged or filleted accounts is being scrapped altogether

In other words, more of your company’s financial details will be going on public record. That might make some business owners uncomfortable, particularly those worried about exposing sensitive commercial information. But it’s a step toward a more transparent business environment that aligns the UK with international best practices.

Will My P&L Be Public?

Here’s where things get a little fuzzy. The Companies Act 2006 (Section 468A) gives the registrar the power to withhold some or all of the profit and loss account from public view for “certain companies.” But at the time of writing, we still don’t know which companies qualify for that discretion or how it will be applied.

For now, you should assume your P&L will be public and plan accordingly.

New Requirements for Audit Exemptions

Audit exemptions aren’t going away, but the rules around them are tightening up.

From 6 April 2025, companies claiming an exemption have had to do two things:

• State the exemption being claimed directly on the balance sheet
• Confirm that the company qualifies for that exemption

This is in addition to the existing requirement under Section 476, which already requires companies to confirm that members haven't requested an audit. The new statement is about clarity, accountability and more visibility.

Changing Your Accounting Year? Not So Fast

Here’s another new limit: companies will only be able to shorten their accounting reference period once every five years. Any further changes will need a solid business reason, and that reason will need to be shared with Companies House.

This change is intended to prevent companies from manipulating their filing periods to avoid disclosure or delay publishing unfavourable news. It aligns the rules for shortening the accounting year with the existing rules for lengthening it.

FRS 102: The Disclosure ‘Double Whammy’

For companies applying FRS 102, Section 1A, the changes don’t end with the ECCTA. From accounting periods beginning on or after 1 January 2026, several encouraged disclosures are becoming mandatory. This includes areas like:

• Revenue recognition
• Leasing
• Tax (current and deferred)
• Share-based payments
• Provisions and contingencies
• Related party disclosures

Combined with the P&L publication requirements, these expanded disclosures could leave many small companies feeling overexposed.

What Should Companies Do Now?

There’s still time to get ahead of the changes, but that time is ticking down. Here’s a quick to-do list:

• Check Your Inbox – You may have already received an email. If not, expect an email from Companies House with details about the changes.
• Get Software-Savvy: Start testing iXBRL-compatible software now, if you file accounts in-house.
• Talk to Your Accountant: If you have one, ask how they’re preparing for the transition.
• Review Your Exemptions: Make sure you’ll still qualify for audit exemptions under the new rules.
• Stay Updated: Keep an eye on Companies House announcements regarding which companies might be exempt from P&L public disclosure.

Conclusion

This is a full-scale rethink of how accounts are filed in the UK. It adds some friction. Yes, it asks for more transparency. But the long-term payoff—greater trust in the public register, fewer loopholes for bad actors, a smoother digital filing system—might just be worth the effort.

If you’ve been putting off modernising your filing process, now is the time to get your house in order before Companies House comes knocking.