Guidance

How to report Pillar 2 Top-up Taxes

Find out how to tell HMRC about your Pillar 2 Top-up Taxes (these are Multinational Top-up Tax and Domestic Top-up Tax).

When to report

Once your group has registered to report Pillar 2 Top-up Taxes, you’ll need to submit your returns on or before the deadlines. This 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.

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.

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 a third party software that offers Pillar 2 services

How to report

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

HMRC is working with software developers to provide you with the ability to submit UK tax returns using suitable products. We’ll update this page when more information is available.

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 reported

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

Updates to this page

Published 1 September 2025

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