Expertise

Nils is a Belgian tax lawyer and Partner and Head of Tax for the Middle East at Addleshaw Goddard. He is recognised as one of the leading tax practitioners in the GCC, ranked as a Rising Star by the International Tax Review for three consecutive years (2023-2025) and ranked by Chambers Global 2026.

As Head of Tax for the Middle East, Nils leads Addleshaw Goddard's Middle East tax practice, advising clients across all six Gulf Cooperation Council member states. He advises multinational corporations, regional conglomerates, family offices, financial institutions and government-related entities on the full spectrum of tax matters, combining technical depth with a commercially grounded, solution-oriented approach built on nearly a decade of on-the-ground GCC experience.

Nils's practice spans every dimension of tax work in the region. On the direct tax side, he advises on corporate income tax, international tax planning, double tax treaties, economic substance regulations, transfer pricing and the implications of Pillar Two for multinational groups. His indirect tax practice covers GCC VAT, customs and excise tax. He advises private clients and family offices on tax planning for global mobility, wealth and asset management, and trust and foundation structures. On the transactional side, he supports clients on M&A structuring, tax due diligence and the drafting and review of tax provisions in share purchase agreements, asset purchase agreements and business transfer agreements. He also has an active tax controversy and disputes practice, representing clients in administrative and judicial appeals across the GCC, including proceedings before the UAE Tax Disputes Resolution Committee, the Saudi tax authorities and the civil courts in Oman. Nils also supports clients on tax compliance matters, including tax registrations, corporate tax return preparation, and obtaining tax residency certificates.

A Bloomberg Tax Author and contributor to the Bloomberg Tax Country Guides for the UAE and Saudi Arabia, Nils is a regular commentator on GCC tax matters in leading regional and international business publications and broadcast outlets. He regularly delivers tax training for clients, government authorities and professional development bodies, co-authored reference works on Belgian VAT published by Tiberghien Lawyers and Larcier, and is a contributing author to the forthcoming IBFD GCC VAT Compass. Nils is a member of the International Fiscal Association and serves on the IFA UAE Technical Committee. At Addleshaw Goddard, he leads the firm's Middle East tax practice with a focus on building an integrated, full-service tax offering alongside the firm's corporate, finance, real estate and disputes teams.

Experience

Nils' experience includes:

  • Advised [NV1.1]a large US-headquartered industrial manufacturing group with multiple UAE entities and branches on the implementation and optimisation of the UAE Corporate Income Tax regime, including entity-by-entity position mapping under the standard and Free Zone regimes, transfer pricing disclosures and Pillar Two applicability analysis.
  • Advised a leading Gulf sovereign wealth fund on the UAE corporate income tax and VAT treatment of several ADGM special purpose vehicles, including a formal tax opinion on available exemptions and the structuring of investment vehicles under the UAE corporate tax regime.
  • Advised a major regional automotive distribution hub as ongoing UAE corporate tax counsel, including a detailed opinion resolving conflicting Big Four advice on the interpretation of the beneficial recipient requirement for qualifying income under the Free Zone regime, covering substance requirements, de minimis thresholds and the VAT treatment of exports and designated zone transactions.
  • Advised a multinational energy developer on a wide-ranging international restructuring involving the redomiciliation of holding companies into the UAE and Free Zone migrations, spanning more than ten jurisdictions across Africa, the Middle East and Central Asia, including consolidated analysis of capital gains tax, withholding tax, stamp duties and treaty implications.
  • Advised a UAE government-related entity administering a strategic incentive programme on the VAT treatment of research and development grants allocated to private-sector recipients, including the characterisation of sovereign versus commercial activities and the application of special government refund and exemption mechanisms.
  • Advised a US multinational healthcare business on seller-side Saudi Arabia M&A tax support in connection with the divestment of its Saudi healthcare business, including transaction tax structuring, bespoke drafting input to the share purchase agreement on key Saudi tax risk areas, and tailored approaches to tax warranties and indemnities to reflect Saudi enforcement realities.
  • Advised one of the UAE's largest family-owned business conglomerates on a corporate tax-driven restructuring of a significant commercial real estate portfolio, integrating UAE corporate income tax, VAT, real estate transfer tax and estate planning considerations, including the use of foundation-type vehicles for holding and succession planning.
  • Advised a global private equity sponsor on the post-acquisition reorganisation of a luxury goods group following a landmark acquisition, including redesigning the international holding and operating structure, relocating key entities and aligning the structure with the UAE corporate tax regime and evolving international tax rules.
  • Represented a multinational pharmaceutical company before the Saudi General Secretariat of Tax Committees and ZATCA's settlement committee in connection with transfer pricing assessments, and concurrently initiated a Mutual Agreement Procedure under an applicable Saudi double tax treaty to address cross-border double taxation risk and pursue parallel international resolution.
  • Represented a large manufacturing group in a significant UAE VAT dispute following a Federal Tax Authority assessment challenging the VAT treatment of supplies between the group's foreign head office and its UAE branch, resulting in penalties in the multi-million dirham range. Prepared and submitted a detailed reconsideration request combining UAE legislative interpretation with comparative jurisprudence from the Court of Justice of the European Union.
Publications
  • Bloomberg Tax Author — contributed to the Bloomberg Tax Country Guide and VAT Navigator for the United Arab Emirates and Saudi Arabia, covering corporate income tax, VAT and indirect tax developments across the GCC
  • Contributing author to the forthcoming IBFD GCC VAT Compass, a comprehensive reference work on VAT across the Gulf Cooperation Council member states
  • Co-authored the Belgian VAT chapter in the Tiberghien Tax Law Manual and the Larcier VAT Manual, two leading Belgian tax reference works
  • Regular commentator in Gulf Business, The National, Khaleej Times, AGBI and ACCA AB Magazine on GCC tax developments, including UAE corporate tax, e-invoicing, Saudi real estate tax reform and Oman tax policy
  • Op-ed contributor to Gulf Business on the UAE's evolution from a zero-tax jurisdiction to a globally competitive corporate tax framework
  • Regular guest on a leading UAE business radio programme, covering topics including UAE Corporate Tax, Small Business Relief, tax residency risks for UAE residents, the Free Zone corporate tax regime and penalty frameworks
  • Creator of a video series on UAE Corporate Income Tax aimed at in-house professionals navigating the new regime
  • Regular contributor to regional and international tax podcasts and webinars on GCC tax developments
  • Regular speaker at industry events, client seminars and professional development programmes across the GCC, including the DIFC Academy, LexisNexis, the International Fiscal Association, the EU Trade Counsellors' Meeting and various Business Councils in Dubai
Training delivered

Nils regularly delivers tax training to clients, industry bodies and professional development programmes:

  • DIFC Academy - School of Law: delivered training on UAE Corporate Tax Law covering the new corporate tax regime and practical implications for businesses
  • LexisNexis: delivered training on UAE Corporate Tax Law for legal and finance professionals
  • IBFD: lecturer for IBFD professional development courses on international taxation
  • Free Zone Authorities: delivered tax training sessions for Free Zone clients and stakeholders on UAE Corporate Income Tax, Free Zone regime eligibility and VAT compliance
  • Legal industry event: co-presented the tax session on GCC tax developments for in-house legal teams, covering audits, controversy, workforce matters and M&A transactions
  • EU Trade Counsellors’ Meeting: presented on UAE tax developments for EU diplomatic and trade representatives
  • Regular speaker for various Business Councils representing local business communities in Abu Dhabi and Dubai.
Languages
  • English
  • Dutch
Recognition

Chambers Global 2026 — Tax, UAE

Ranked Up and Coming. Client testimonials include: “He demonstrates exceptional expertise in UAE tax matters, providing precise and practical advice.”

International Tax Review — World Tax Rising Star (2023, 2024, 2025)

Recognised as a Rising Star for three consecutive years. Described as a practitioner whose work has already stood out to peers and clients and who is recognised as a potential market leader of the future.

Testimonials

“We trust Nils with the most complex and challenging matters and we are highly satisfied with his detailed, well-reasoned insights. His expertise provides us with a sense of security.” - Tax respondent, Chambers Global Guide

“Nils can cover everything we need, showing that he listens and sticks to the points we discuss.” - Tax respondent, Chambers Global Guide

“Nils Vanhassel is always available when you need him and his overall knowledge of the region is very valuable.” - Tax respondent, Chambers Global Guide

“He demonstrates exceptional expertise in UAE tax matters, providing precise and practical advice.” - Tax respondent, Chambers Global Guide

“He has very strong technical skills and is very good to work with.” - Tax respondent, Chambers Global Guide

Education

University of Ghent

  • Bachelor of Laws (LL.B.)
  • Master of Laws (LL.M.) — Tax, Corporate and Financial Law

Brussels Tax College (Fiscale Hogeschool Brussel)

  • Postgraduate Diploma, Tax Law (Fiscaal Recht en Fiscale Praktijk)

International Bureau of Fiscal Documentation (IBFD)

  • Advanced Professional Certificate in International Taxation (APCIT)
Memberships
  • Member, International Fiscal Association (IFA)
  • Member, IFA UAE Technical Committee — focused on building consensus on UAE tax technical questions, presenting on corporate tax developments and engaging with the broader UAE tax community on emerging issues