A UK subsidiary can skip its audit under section 479A when its UK parent guarantees its liabilities. FinTags checks the conditions, prepares the members' notice and the AA06 guarantee, and checks the parent accounts, for £60.
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A UK subsidiary can file unaudited accounts when its UK parent guarantees all its liabilities at the year end. There is no size limit.
We confirm the parent is UK-established, the subsidiary is consolidated and the exemption is disclosed.
We prepare the written notice for every member to sign, showing the subsidiary's name, number and section 479A.
We complete the parent's statement of guarantee, ready for the parent to sign.
Download the complete package, with a checklist and filing order, to file on or before your accounts.
A missing or mismatched document can invalidate the exemption. We check every piece before you file.
All five conditions must be met for the financial year. If one fails, the subsidiary needs an audit.
The subsidiary's balance sheet must also state that it was entitled to exemption from audit under section 479A.
The audit exemption saves the cost of a subsidiary audit, but the AA06 guarantee is a lasting commitment. Directors should weigh both before signing.
Timing matters. The members' notice, AA06 and parent accounts must reach Companies House on or before the date the subsidiary's accounts are filed.
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Section 479A of the Companies Act 2006 lets a UK subsidiary file unaudited accounts if its UK parent guarantees the subsidiary's outstanding liabilities at the financial year end. There is no size limit for this exemption.
The parent must be established under the law of any part of the UK. All members of the subsidiary must agree, the parent must give a section 479C guarantee, the subsidiary must be included in the parent's consolidated accounts, and those accounts must disclose that the subsidiary is exempt from audit.
A written notice that all members agree to the exemption, form AA06 (the parent's statement of guarantee), and the parent's consolidated accounts with the auditor's report. They must be delivered on or before the date the subsidiary's accounts are filed.
£60 per subsidiary, per financial year. This covers checking eligibility and preparing the audit exemption package. Filing with Companies House is not included. iXBRL tagging of the subsidiary's accounts is £20 for the first page and £4 per additional page. Prices exclude VAT.
AA06 is the Companies House form a parent undertaking uses to give a statement of guarantee for a subsidiary under section 479C. It is filed against the subsidiary's company number for the relevant financial year.
No. Once filed, the guarantee cannot be revoked. It stays in force until all the liabilities the subsidiary had at that year end are settled, and creditors can enforce it against the parent.
Yes. The subsidiary still prepares and files its accounts, but they can be unaudited. The balance sheet must include a statement that the company was entitled to exemption from audit under section 479A.
Yes. Every member of the subsidiary must agree to the exemption for the financial year. There is no prescribed form, but the notice must show the subsidiary's name, number and the section the agreement is made under.
Yes. Dormant subsidiaries that meet the same conditions can use an AA06 guarantee to be exempt from preparing or filing accounts (sections 394A and 448A). The AA06 must state which exemption is being claimed.
Yes. FinTags is an HMRC-recognised iXBRL solutions provider and an authorised agent for filing CT600 returns.
Last updated 22 October 2026. Sources: Companies House accounts guidance and Companies Act 2006, s479A
Groups and accounting firms can send us every subsidiary in one batch. Tell us your volume and year ends.
