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2027 Dormant Accounts Filing Changes: Software-Only Companies House Rule Explained


Major compliance change coming for all dormant companies.


From 1 April 2027, Companies House will require mandatory software-only filing for annual accounts, including dormant company accounts.

  • ❌ Paper AA02 submissions end

  • ❌ WebFiling for accounts ends

  • ❌ The joint HMRC/Companies House filing service closes 31 March 2026

  • ✔ Approved digital software filing becomes compulsory

If you operate a dormant limited company, this change applies to you.

Will Dormant Companies Need Software to File Accounts From 2027?

Yes. From 1 April 2027, all UK companies, including dormant companies, must file annual accounts using approved accounts software. Paper AA02 forms and Companies House WebFiling for accounts will no longer be accepted.


This means directors must file dormant accounts online using compliant software rather than manual submission methods.

Key Reform Timeline (2025–2027)

  • 13 October 2025: Companies House begins expanded identity verification requirements for directors and persons with significant control (PSC). Companies House reform update

  • 31 March 2026: The free joint Companies House and HMRC online accounts and Company Tax Return filing service permanently closes. Official GOV.UK announcement

  • 1 April 2027: Mandatory software-only filing for annual accounts (including dormant company accounts) becomes compulsory.

This forms part of wider Companies House reform under the Economic Crime and Corporate Transparency Act, modernising digital filing across the UK.

Why Is Companies House Introducing Mandatory Software Filing?

The UK government is modernising company reporting to strengthen compliance, improve transparency, and reduce misuse of dormant or shell companies.

  • Improve data accuracy

  • Reduce misuse of dormant structures

  • Increase enforcement capability

  • Introduce structured digital accounts filing UK-wide

  • Strengthen director identity verification

Software submission ensures structured, validated digital reporting. Dormant companies are not exempt.

Old Filing System vs 2027 Digital Filing Requirement

Feature

Before 2027

From April 2027

Paper Dormant Accounts (AA02)

✔ Allowed

❌ Not accepted

Companies House WebFiling (Accounts)

✔ Available

❌ Closed

Joint HMRC/CH Filing

✔ Available until 31 March 2026

❌ Closed

Software Submission

Optional

✔ Mandatory

Does This Apply If My Company Has Never Traded?

Yes. If your company has had no significant accounting transactions, it likely qualifies as dormant, but annual filing is still legally required. If you are unsure whether your company qualifies, read: What Are Dormant Accounts?


From 2027, even zero-activity accounts must be submitted using compliant software.

How to File Dormant Accounts Online Under the 2027 Rules

From April 2027, directors must use Companies House approved software to submit dormant accounts digitally. The process typically includes:

  • Preparing a simplified dormant balance sheet

  • Including statutory notes

  • Director approval and confirmation

  • Structured digital submission via software

Step-by-step guide: How to File Dormant Accounts

What Happens If You Ignore These Changes?

Failure to comply with dormant accounts deadlines can lead to automatic financial penalties, even if your company owes no tax.

  • Up to 1 month late – £150

  • 1–3 months – £375

  • 3–6 months – £750

  • Over 6 months – £1,500

Repeat late filing doubles penalties. Continued non-compliance may lead to strike-off action.


Full breakdown: Dormant Company Deadlines & Penalties Explained

What Directors Should Do Now

  • ✔ Check your next accounts filing deadline

  • ✔ Stop relying on WebFiling before March 2026

  • ✔ Move to compliant software well before April 2027

  • ✔ Ensure director details are ready for identity verification changes

Experience insight: Many directors assume dormant companies are unaffected by digital reform. In reality, dormant accounts are fully included in software-only filing requirements.

Your Options After April 2027

1. Buy Full Accounting Software

Often excessive for a dormant company with no transactions.


2. Use an Accountant

Reliable but typically higher cost for minimal dormant activity.


3. Use Specialist Dormant Accounts Filing Software

Purpose-built for filing dormant accounts online. No accounting knowledge required. Designed specifically for zero-transaction companies. Fully compliant with Companies House software-only rules.

Additional Dormant Company Resources

Final Word: Prepare Early for Software-Only Filing

The move to mandatory digital accounts filing is confirmed. Dormant companies are included. Filing dormant accounts online using compliant software will become the standard requirement from April 2027.


Stay compliant and future-ready:

Start Filing Now


Simple. Digital. Fully compliant dormant accounts filing.

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