Tom Karnik | Fieldfisher
Skip to main content
Professional background

Professional background

I advise both companies and private individuals across all industry sectors on a range of direct and indirect taxation disputes. In particular, I advise on professional negligence claims against former advisers due to failed tax planning and/or structuring and commercial litigation where the subject matter is tax related. Many of these claims involve overseas tax elements and structures across multiple jurisdictions.

In addition, I advise on employment taxation issues (including IR35) and on disclosures of tax irregularities to HMRC. 

My recent and current cases include:

  • A professional negligence claim on behalf of a high net worth individual and their company against their former solicitors in relation to negligent tax structuring of royalty income.
  • A professional negligence claim on behalf of a high net worth individual against their former solicitors in relation to negligent advice as the beneficiary of a trust and associated tax consequences.
  • Acting for Defendants in commercial litigation related to a failed tax avoidance scheme.
  • Acting for a technology company in making a voluntary disclosure to HMRC due to pension irregularities.
  • Providing ongoing IR35 compliance advice to a company.

Authored pieces

All Resources
A cityscape featuring modern buildings and a river is overlaid with numbers and mathematical symbols. The image has a purple and blue color scheme, creating a futuristic, data-driven atmosphere.
Tax & Structuring
Insight

VAT and public bodies: obtaining a competitive edge?

01.12.2025
Understanding Northumbria Healthcare NHS Foundation Trust (the "Trust") v HMRCThe Supreme Court has considered when public bodies providing services akin to those private operators provide (in this case, car parking) will find themselves required to charge VAT on those services.
Learn more