Whistleblowing & Tax Investigations - Managing Risk in the New HMRC Landscape

Introduction

HMRC’s strengthened whistleblower reward regime, introduced in April 2026, represents an important shift in the UK tax enforcement landscape. The introduction of clearer financial incentives for individuals who provide information relating to suspected tax non-compliance is likely to increase both the volume and seriousness of disclosures made to HMRC.

This webinar will provide a practical overview of HMRC’s whistleblower regime and its implications for businesses, advisers and organisations managing tax risk.

Expert speaker Rachel Cook will examine how insider disclosures may trigger wider enquiries or investigations, even where concerns ultimately prove unfounded and why businesses must increasingly proceed on the basis that internal tax positions and decision-making processes may later be scrutinised externally.

Consideration will also be given to the growing importance of contemporaneous documentation, governance procedures and internal escalation mechanisms, together with the practical implications for voluntary disclosure and early strategic advice where concerns arise.

Ideal for accountants, lawyers, tax advisers, compliance professionals, in-house counsel, MLROs and corporate governance professionals, this webinar will offer a practical insight into how HMRC’s evolving approach may affect the management of tax risk and the steps businesses and advisers can take to strengthen governance and prepare for increased scrutiny.

What You Will Learn

This webinar will cover the following:

• The key features of HMRC’s strengthened whistleblower regime
• How financial incentives may affect internal reporting and disclosures to HMRC
• Why whistleblower reports may trigger wider HMRC enquiries or investigations
• The practical implications for businesses, advisers and in-house teams
• Why contemporaneous documentation and governance processes are increasingly important
• The importance of clear internal escalation and reporting procedures
• Practical steps businesses and advisers can take to mitigate risk
• The increasing importance of early strategic advice where concerns arise
• The role of voluntary disclosure and the risks of delay
• Common issues arising during the early stages of HMRC enquiries and investigations
• The wider business implications of insider-driven scrutiny

This pre-recorded webinar will be available to view from Tuesday 16th June 2026

Alternatively, you can gain access to this webinar and 2,400+ others via the MBL Webinar Subscription. Please email webinarsubscription@mblseminars.com for more details.