UK Automatic Exchange of Information changes: who needs to register by 31st December 2025?

Written by  Thomas Adcock - Partner, Tax
Published on:  17 December 2025

You are probably already aware that the UK has recently adopted changes into legislation that require certain entities to register for the Automatic Exchange of Information (AEOI) regime that is operated by HMRC. This is often referred to as the Common Reporting Standard (CRS). Although this is not a tax matter HMRC, is acting as the part of Government responsible for administrating the regime.

The new rules are complex and there is currently uncertainty who must register. However, our current understanding is that all non-natural persons that use advisors and/or managers to invest funds should register. This will include companies, partnerships and trusts.  HMRC have produced several examples of investment entities that fall under the legislation.

 

The deadline for registration is 31st December 2025.

 

Who needs to register?

 

According to HMRC guidance, you should register for the AEOI if you:

What has changed?

 

The legislation changed the definition of entities and individuals that will need to register, which now includes most FCA Investment entities and some digital asset holding companies. The main change is the rules now apply to both financial institutions and UK representatives.

In the new rules, “Financial Institution” means a custodial institution, depository institution, an investment entity, or a specified insurance company.

With these changes, your entity may fall within the definition of an investment entity that it invests in, administers, or for which it manages financial assets or money on behalf of other persons.

We understand that HMRC requires anyone liable to register to do this themselves as it must be done via an entity’s Government Gateway Portal. If you do not have one, it can be set up as part of the registration process.

 

We recommend you review the definitions and speak to your FCA investment and/or legal advisors around the changes and how they can help you.  Unfortunately, we are unable to do this for you.

 

Penalties

 

HMRC may charge a penalty of £1,000 for failing to register on time, with further penalties of £300 per day if the failure continues after the initial penalty notice has been issued.

 

How to register

 

Registration can be made using the following:  https://www.gov.uk/guidance/register-for-automatic-exchange-of-information

Similar Insights

Interim Profits in CET1: What MiFID Investment Firms Need to Know

3rd July 2026
Written by: Jade Quaintance
Maintaining a strong capital position is fundamental for MiFID investment firms, not only to meet regulatory requirements, but to support long-term resilience and confidence. One area that frequently prompts discussion is how interim profits are...
link to Find Out More

Pillar 2: Multinational Top-up Tax and Domestic Top-up Tax Registration requirements

30th June 2026
Written by: Nikhil Oza
Companies with 31st December 2024 year-ends falling within...
link to Find Out More

Tronc and payroll in the hospitality sector

17th June 2026
Written by: Jaspreet Bassi
The handling of tips, gratuities, and service charges in the hospitality sector has undergone significant reform since October 2024. For employers, this has not simply introduced new rules but has materially increased both the complexity of compliance...
link to Find Out More

Sign up to Gravita's latest updates and newsletters

Stay up-to-date with our event invites, latest news and updates, straight from Gravita's experts.