HMRC has announced that it will close the online service for filing company accounts and corporation tax returns on 31 March 2026.

Online System For Filing Company Accounts To Close

Companies with an accounting period ending after 31 March 2025 will no longer be able to use HMRC’s free online service (unless they file before 1 April 2026) and will need to use commercial software to file their accounts and tax return instead.

Man looking at laptop

Why Is It Closing?

The decision to close the service comes as a result of technological advancements and new regulatory demands. HMRC feels that the current joint filing service doesn’t align with modern digital standards and recent changes to company law in the UK.

Additionally, the introduction of the Economic Crime and Corporate Transparency Act has meant tightening up corporate governance and anti-fraud measures. So, transitioning to a software-based filing model should not only improve data accuracy but also integrate with these new systems to improve security measures.
HMRC Letter

Who Does It Affect?

The free online filing service is restricted to smaller, relatively simple companies with turnover not exceeding £632,000, subject to a number of exclusions. It allows the company to submit the annual corporation tax return to HMRC and send the accounts to Companies House at the same time.

Following its closure, those companies, which could be a local residents’ association or a small incorporated charity, will need to use commercial software to comply with their online filing regulations. The software will need to allow the taxpayer to digitally file a corporation tax return (CT600) as well as the corporation tax computation and the company accounts for the same period in the specified ‘iXBRL’ format.
Business owner on phone

We’ll Help You Make The Change

If you or someone you know currently uses the online filing service to submit the annual accounts and tax return to HMRC for a small company, such as a local amateur sports club, we can help you choose a suitable software product, get in touch with our team of expert accountants today.