Clare Halligan
People

Clare Halligan

Director

Areas of expertise

Tax disclosures; tax investigations; tax disputes; mediation 

Experience

Clare works in our Tax Dispute Resolution team, helping people and businesses resolve contentious tax matters with HMRC. 

Where a tax error has been identified, Clare and her team help clients make voluntary disclosures to HMRC through either the Worldwide Disclosure Facility, HMRC's Digital Disclosure Service or through the Contractual Disclosure Facility (COP 9). 

Clare also supports clients navigate HMRC enquiries and tax investigations up until conclusion. Her enquiry experience covers personal tax enquiries, tax investigations (COP9 and COP8), corporate enquiries such as Patent Box and R&D tax credits, cross tax enquiries and Partnership enquiries. Where a tax dispute unfolds, she also has mediation experience (ADR). 

Professional qualifications/membership

  • Chartered Tax Advisor (CTA)
  • Trust and Estate Practitioner (TEP)
  • Member of Chartered Institute of Taxation (CIOT)
  • Member of the Society of Trust and Estate Practitioners (STEP)
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Event

Pre-Budget webinar update

Toby Tallon Alex Berman Laura Hayward Joe Johnson

Multiple Speakers

Toby Tallon, Alex Berman, Laura Hayward, Joe Johnson

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Article

Latest Budget predictions and speculation

Our roundup of the latest reports on what changes might be on the way in the Autumn 2025 Budget.

Contact Clare