Changes to online filing of accounts at Companies House

tiemadmin • 10 March 2025

The Online Accounts and Company Tax Return (CATO) service is scheduled to close on 31 March 2026. ​

This service has enabled businesses to file their company accounts and tax returns simultaneously with both Companies House and HMRC. However, due to its outdated nature and misalignment with modern digital standards and recent changes in UK company law under the Economic Crime and Corporate Transparency Act (ECCT Act), the decision has been made to discontinue it.​

Key Actions for Businesses:

  • Download Past Filings: It's advisable to download and save at least three years of your company's account filings before 31 March 2026 , as access to previous submissions will not be available after this date.​
  • Explore Software Options: Begin researching and selecting suitable commercial accounting software that meets the filing requirements for both Companies House and HMRC. Transitioning to software-based filing can offer enhanced features, improved accuracy, and better integration with your financial records.​

This shift aligns with the broader Making Tax Digital (MTD) initiative, aiming to streamline tax compliance through digital tools. While adapting to new software may present challenges, the benefits include increased efficiency and reduced errors in tax filings.​

For detailed guidance and updates, visit the official GOV.UK website.​

By proactively preparing for this transition, businesses can ensure continued compliance and take advantage of the efficiencies offered by modern digital filing systems.

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