What is the UTT regime?
The Notification of Uncertain Tax Treatment by Large Businesses (UTT) regime was introduced via Schedule 17 to the Finance Act 2022. It requires large businesses to notify HMRC of legal interpretation uncertainties in their tax positions if:
- the tax advantage exceeds £5 million, and
- either they adopt a position contrary to HMRC’s published view or make provision in their accounts recognising uncertainty. (gov.uk)
The regime applies to Corporation Tax, Value Added Tax, and Income Tax (including through PAYE) returns filed on or after 1 April 2022. (gov.uk)
What’s changing: the UTT Extension Consultation
A new consultation published about four weeks ago proposes clarifications and adjustments to UTT’s scope and how it operates:
- Defining “uncertain tax treatment” more clearly—refining what triggers a notification. (gov.uk)
- Exemptions where HMRC is already aware of the uncertainty—if discussion has happened with HMRC or the matter is guidance-covered, no separate UTT notification may be needed. (gov.uk)
- Business size & thresholds remain—tax advantage threshold still £5 million. (gov.uk)
Implications: What Businesses Need to Do Now
Here are the actionable steps large businesses should take:
- Review your tax governance to identify positions where tax treatment is unsettled or possibly differs from official HMRC guidance.
- Check what has already been communicated to HMRC—maybe a prior conversation or guidance means you don’t need to file a new UTT.
- Ensure accounting provisions reflect uncertainty properly—if provision is made recognising potential loss, that may trigger notification requirement.
- Track changes in HMRC’s guidance so you aren’t surprised when public positions are updated and your treatments diverge.
- Document everything clearly—so that it's easier to demonstrate whether you believed HMRC was aware or whether your UTT obligations were triggered legitimately.
Practical Example
A multinational software company predicts that its VAT rate on cloud-based service bundles might be reclassified. It includes a £6 million provision in its financial statements reflecting doubts. Under UTT regime, because tax advantage depends on lower VAT, it must notify HMRC if the threshold of £5 million is exceeded.
But if HMRC has already published guidance stating that cloud bundles will be standard-rated, and the company’s position is contrary, then notification required unless it reasonably believes HMRC is aware.
Conclusion
The proposed extension to the UTT regime may not drastically expand its scope, but it raises the need for large businesses to sharpen their risk assessment, recordkeeping, and communication with HMRC. Being proactive will help avoid penalties, surprises, or exposure arising from uncertain tax treatments.