Tel. (direct) : +32 10 41 71 99
Fax : +32 10 41 72 92


Olivier Willez

Olivier Willez joined Dear Krzewinski & Willez as a partner in March 2009. Previously, Olivier was a senior associate in the tax department of Loyens & Loeff Brussels.

Olivier graduated from the University of Louvain (U.C.L.1999) and also holds a master in tax management from the Solvay Business School, University of Brussels (U.L.B. 2001).

He focuses his practice on tax law (tax advice and tax litigation). As a tax attorney, his area of expertise covers both direct (individual and corporate income tax) and indirect taxes (VAT, registration duties, and wealth taxes). Olivier’s practice focuses on a broad range of international and domestic corporate tax issues. These issues include corporate restructuring, inward investments, holding and financing structures, transfer pricing, withholding tax requirements, double tax treaty matters, corporate and structured finance projects, mergers and acquisitions, real estate or management buy-outs. He also advises individuals on efficient remuneration techniques (salary splits, special status for expatriates in Belgium, etc) as well as on wealth optimisation planning.

He is the author of several publications on tax-related subjects and is a frequent speaker at tax conferences on a wide range of tax issues.
He has taught Belgian and international tax law at the University of Brussels (V.U.B.) – postmaster BICCS “Investing in Europe”.

Olivier is a member of the Brussels bar.

He speaks French, Dutch and English.


  • “Tax on Inbound Investment” (English), Getting the Deal Through, 2007
  • “New PRC-Hong Kong Double Tax Treaty Offers Planning Opportunities” (English), Belgium-Luxembourg Chamber of Commerce in Hong Kong, November 2006,
  • « Timing of Costs Deduction » (French), Actualités Fiscales, Februari 2005,
  • « The Participation Exemption Regime » (French), Revue de la Conférence du Jeune Barreau, April 2003,
  • « The Pension with Respect to the 80% Rule » (French), Revue Générale de Fiscalité, March 2002,

Conferences and seminars

  • « The new liability regime of directors in the New Belgian Companies and Associations Code”, presentation given in the framework of the seminar “The new Belgian Companies and Associations Code; which consequences for your clients?”, Artelegis, 20 June 2019, (with C. KRZEWINSKI & A. COSTANTINI, in co-operation with the notaries Nicaise, Colmant & Ligot).
  • October 2008: AIJA (Association Internationale des Jeunes Avocats) Conference in Shanghai – Tax panel « International tax structuring », English
  • April 2008, road show in Asia, “Belgium-Luxembourg, main tax features and developments – Structures for Chinese/Hong Kong investments in Europe and for foreign investments in China”, English
  • September 2008 : CME Services conference– « La société holding et la société à participation familiale luxembourgeoise », French
  • March 2008, Infotopics seminar, « Doing business abroad – tax issues », French
  • March 2008, presentation for Hong Kong Trade & Development Council “Investing in China through Hong Kong”, English
  • April 2007, Loyens & Loeff seminars in China (Shanghai, Shenzhen, Hangzhou and Beijing) « International tax structuring – Belgium and Luxembourg structures », French
  • January 2007, Infotopics Seminar, “Familial holding”, French
  • (Also organized) December 2006, Shanghai Association of International Economic and Technical Cooperation, SAIETC, ”Doing Business in Europe, Strategies and Opportunities”, English
  • November 2006, Hong Kong General Chamber of Commerce, HKGCC, Luncheon Seminar, ”International Tax Planning – Tax Strategies when Investing in Europe”, English
  • October 2006, Infotopics Seminar Brussels, ”Wealth Planning – Holding Companies”, French
  • June 2006, Belgian-Luxembourg Chamber of Commerce in Hong Kong, “Do and Don’ts of Expatriate Taxpayers”, English
  • May 2006, Loyens & Loeff Seminars (co-organised with White & Case), Beijing and Shanghai, « Hong-Kong, the International Gateway to Europe – The Double Tax Treaty between Hong Kong and Belgium », English
  • November 2005, Shanghai, official visit of the Belgian/Flemish Government, speech on « How to establish a business in Flanders », English
  • October 2005, Infotopics Seminar Brussels, « Wealth planning – Holding companies », French
  • October 2005, Infotopics Seminar Brussels, « Transfer pricing – OCDE principles », French
  • June 2005, Infotopics Seminar Brussels, « Re-invoicing in direct taxes », French
  • February 2005, Infotopics Seminar Brussels, « Holding companies – familial holding », French