Mark Abbs | industry commentator

CEO, Fenton International

Cross-border Tax | Global Mobility | Global Talent | AI & Tax

With over three decades advising on international tax, global mobility and cross-border people issues, Mark’s commentary draws on experience advising multinational employers, senior executives, HR, C-Suites and boards — and on having held senior leadership positions himself. He writes on AI and tax, reward and global talent, the changing workplace, cross-border employments, global mobility compliance and governance — areas where the technical landscape rarely stands still.

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Verified Third-Party Evidence

Published research, articles, interviews and media where Mark Abbs is named by an independent external source.

Research & White-papers

  • Taxation of Internationally Mobile Executives (TIME) — co-authored with Exeter Business School, in collaboration with BKR International.

  • Global Talent 24: A Spotlight on the Life Sciences Sector (2024)

  • Global Talent 22: Global Trends, Risks and Solutions (2022)

  • Talent 2021: Global Trends, Risks and Solutions in the Life Sciences & Pharmaceutical Sectors

  • Smart Moves Series — three whitepapers on cross-border employment tax and global mobility

  • Key Issues Employers Should Consider When Sending People to Work Overseas

Interviews & Features

  • Relocate Magazine — "Where People and Purpose Mean Business" (Autumn/Winter 2022), feature interview

  • Global Talent, Cambridge Business Park

  • HRD Connect — "Hidden Tax Risks for HR", exclusive interview

  • BRave Business Podcast with Declan Curry — Globally Remote Working

Specialist Authority Areas

International tax, UK tax, Federal, State, Local & City taxes, cross-border employment tax, global mobility, international payroll, international social security, tax treaty analysis, tax residence, tax equalisation, tax protection, non-resident directors, global equity taxation, cross border treatment of long term incentives (stock options, RSUs, deferred compensation, ISOs, NQSOs, EMI), employer compliance, permanent establishment risks, carried interest across borders, international pensions, global talent, global mobility policy and strategy.

Published Articles

  • Chapter on expatriate taxes — Tolley's Guidance (LexisNexis)

  • "A Global Issue" — Tax Adviser Magazine (Chartered Institute of Taxation and Association of Taxation Technicians, June 2017), with Vanesha Kistoo, on international payroll concessions for mobile employees

  • Technical papers on non-resident directors, cross-border social security, tax equalisation, international payroll, international treaties and credits

National

  • The Times — quoted on government pensions policy

  • Invited to attend a private reception at No. 11 Downing Street, hosted by the British Library.

Conference Speaking

  • ECA International — guest speaker

  • BKR International — presented at multiple international conferences

  • Taylor Vinters, Oxford — Global Talent Trends in Life Sciences (November 2019)

  • Scottish-German Business Exchange — spoke on the future of the workplace, hosted by Edinburgh University, with the Scottish Government and British Chamber of Commerce in Germany

  • Spanish Chamber of Commerce in the UK — "Tips for Spanish Companies Sending Expats to UK" and "Don't Get Into Trouble With UK Tax — Risks and Opportunities"

  • French Chamber, Italian Chamber, German Chamber, Austrian Chamber of Commerce in the UK — presentations on cross-border tax and global mobility topics

  • Host of Expat Conference for HR professionals, including guest speakers from the Home Office on Immigration