When to report

Once your group has registered to report Pillar 2 Top-up Taxes, you’ll need to submit your UK tax return and information return on or before the deadline, unless the group meets the conditions for a below-threshold notification.

The deadline is 18 months after the end of the first accounting period. From the second period onwards the submission deadline will be 15 months after the end of the accounting period.

An information return (also known as a GIR, or GloBE information return) is separate to your UK tax return.

What happens if you report late

If you do not submit your returns by the deadline, you may have to pay penalties. Read the Multinational Top-up Tax and Domestic Top-up Tax manual for more information.

HMRC would usually apply late filing penalties for submissions of UK tax returns, overseas return notifications and information returns received after their due date.

However, under HMRC’s ‘transitional approach’ no late filing penalties will be charged if the submission is made before 1 August 2026.

What you will need

You will need to have completed your registration for Pillar 2 Top-up Taxes.

You will also need:

• Pillar 2 ID (you’ll get this on the confirmation page after you’ve registered)
• access to compatible software that offers Pillar 2 services

Remember to check the accounting period carefully before submitting. Once any submission has been made for an accounting period, you cannot change that accounting period.

How to report

You must use compatible software to make your Pillar 2 Top-up Taxes submissions.

You must submit your UK tax return and one of the following by the submission due date:

• information return
• overseas return notification

Your Pillar 2 Top-up Taxes dashboard (accessed through your business tax account) will have details of due dates, and any returns overdue.

Below-threshold notification

From your Pillar 2 dashboard, you can submit a below-threshold notification if the group:

• does not have consolidated annual revenues of 750 million euros or more in at least 2 of the previous 4 accounting periods
• is not expected to make consolidated annual revenues of 750 million euros or more within the next 2 accounting periods

After you’ve submitted your returns

HMRC will email you when we receive each of your returns.

If you send an information return

We will email you again when we have processed your return. The email will say if we have accepted the return or if you need to fix any errors.

If there are errors, you must fix them and send the return again.

If weyou’ve receivedpreviously yoursent firstan information return asand it’s failed validation checks

We’ve recently made some changes to the information returns service to prevent some failed validation errors occurring incorrectly.

Check Report Pillar 2 top-up taxes — service availability and issues to find out about further planned changes to the service.

Contact your submissionsoftware date.provider for information on how to resubmit a previously failed return. You may need to make some corrections to it first, before you resubmit.

Next Steps

Find out how and when to pay Pillar 2 Top-up Taxes.