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  • Tax
  • International tax
  • Human capital services

Richard Tonge




Executive summary

Richard is a Principal in our New York Human Capital Services practice and leads the Global Mobility Services practice in the United States. He has significant experience advising clients from start-ups to large privately held and listed multinational companies on the tax and social security issues for businesses with internationally mobile employees.


Working across a range of industries, he consults on assignment, mobility and tax policy, program management, international compensation and benefits and employment taxes issues. Richard joined Grant Thornton UK LLP's London office in 2006 and was promoted to Principal in 2018, having joined our New York City practice in 2016.


Richard has more than 16 years of experience advising clients in different stages of growth and international expansion. He has managed large assignee programs, having designed and redeveloped international assignment and tax policies and processes for businesses in industries from financial services, technology to consumer products. He has experience advising on multijurisdictional issues, including assignment structuring, tax and social security planning, payroll and employer obligations such as international equity issues, end of year compensation accumulation and reporting.


Richard has advised extensively on the emerging remote and hybrid working trends, supporting companies navigate the tax complexities and develop and implement effective policies. He leads the firm's hybrid workforce and business traveler tax analytics offering. Richard is a frequent commentator on global workforce issues impacting multinational employers, from mobility trends to hybrid workforce, having contributed to the Financial Times, Law360, Bloomberg and the Tax Executives Institute (TEI) as well as Grant Thornton publications.



Professional qualifications and memberships

  • Chartered Institute of Taxation
  • Association of Taxation Technicians
  • Enrolled Agent


  • MA, University of Warwick, BA, University of Durham

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