Tax Disputes and Investigations
The global tax landscape has undergone radical change in recent years. In the face of growing pressure to crack down on perceived tax avoidance by multinationals and high net worth individuals, tax authorities including HMRC are becoming increasingly proactive. All taxpayers now face an increasingly complex and hostile environment, with unprecedented levels of scrutiny over their tax affairs.
Against this backdrop, tax disputes are on the rise and can cause both financial loss and reputational harm.
Why use CMS for Tax Disputes and Investigations
As part of the CMS global network with tax capability in over 70 offices, the CMS Tax Disputes & Investigations team is well-placed to advise on all forms of (direct and indirect) contentious tax matters.
Our dedicated specialists have a wealth of experience guiding both individuals and corporates (across a wide range of sectors) through all aspects of tax dispute prevention, management and resolution.
Areas of expertise
Work undertaken by the CMS Tax Disputes & Investigations team includes:
- Tax litigation and alternative dispute resolution
- HMRC enquiries and compliance checks
- HMRC civil information powers
- Tax offences and serious investigations
- Voluntary tax disclosures and penalty mitigation
- Tax-related (commercial) disputes
- Tax risk evaluation and mitigation schemes
Contact the CMS Tax Disputes & Investigations team now for advice
Without proper management, even seemingly straightforward enquiries or compliance checks can quickly spiral out of control. If you are concerned about an ongoing (or potential) tax dispute or investigation, please contact a member of our team as soon as possible to help protect your position.
Aside from tax disputes and investigations, CMS can also help with wider tax services, as well as all other types of disputes and investigations.
UK Tax Disputes Digest (Winter 2026)
Welcome to the Winter 2026 edition of our UK Tax Disputes Digest: a high-level summary of key developments in contentious tax over the last few months for tax and legal in-house professionals.
Tax Controversy 2025 - Chambers and Partners Global Practice Guide
Nicola Hine and Sam Dames offer key perspectives on emerging trends and developments in tax disputes and recent HMRC guidance. With the right strategy, tax challenges can unlock new possibilities.
Legal experts for Tax Disputes and Investigations
