Companies House accounts filing
A controlled filing workflow for the accounts types and document routes currently implemented in AAA WebFiling.
Annual accounts filing is not one universal form. The accounts a company can file depend on its legal and accounting circumstances. AAA WebFiling therefore separates the filing workflow from the professional decision about which accounts are appropriate.
The current platform provides guided data-entry workflows for supported micro-entity and dormant accounts scenarios, as well as a route for uploading a supported completed accounts document. Users remain responsible for confirming that the company qualifies for the accounts being filed and that the accounts are complete and approved.
Current accounts routes
Micro-entity workflow
Enter the information required by the platform's supported micro-entity accounts builder, complete the relevant statutory statements and approval details, review the generated filing material and submit when ready.
Dormant accounts workflow
A separate guided route handles supported dormant-company accounts data, including the approving director and approval date required by the workflow.
Completed document upload
For supported cases, upload a completed accounts document in an accepted XHTML/iXBRL-style format for packaging into the software-filing submission. The platform does not turn an incomplete document into legally complete accounts.
Annual Accounts
Prepare micro-entity or dormant accounts, or upload prepared iXBRL/XHTML.
Accounts deadlines
For subsequent annual accounts, a UK private company normally has 9 months after the end of its accounting reference period to deliver acceptable accounts to Companies House. First accounts can follow a different rule and should be checked separately.
As at 14 August 2026, Companies House lists private-company late filing penalties of £150 for accounts not more than 1 month late, £375 for more than 1 month but not more than 3 months late, £750 for more than 3 months but not more than 6 months late, and £1,500 for more than 6 months late. Consecutive late filing can double the penalty.
Read the filing-deadlines guide and official source links →
XHTML, iXBRL and software filing
Companies House software filing can include structured electronic accounts documents. AAA WebFiling's accounts engine supports generation for the implemented guided account types and a document-upload route for supported completed files. Before submission, the company number, accounts information and document content must all relate to the company being filed.
What this service does not claim
The public website does not claim that every statutory accounts type is available as a guided form, that a Companies House filing automatically files a Corporation Tax return with HMRC, or that transmission means final acceptance. The filing record retains Companies House status information so an acknowledgement, rejection or later status can be distinguished.