Our Executive Committee

Meet the members of the Executive Committee of Deloitte Belgium.

Piet Vandendriessche

Chief Executive Officer (CEO)

Piet Vandendriessche is the Chief Executive Officer of Deloitte Belgium. He first took up the position on 1 June 2016. As CEO, Piet leads and manages the Executive Committee and sets the strategic direction of the firm. He is also a member of the Board of DTTL Global and of the Deloitte EMEA Council.

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Piet Vandendriessche

Geert Verstraeten

Chief Operating Officer (COO)

Geert Verstraeten is Chief Operating Officer and Risk & Reputation Leader. Geert is a certified public accountant serving global public companies. He became audit partner in 1997. He provides attest and assurance services to his clients, dealing with financing, restructuring and acquisitions, and process improvement programmes. He is member of several advisory councils within and outside Deloitte. He currently represents the audit profession in the Disciplinary Court of Appeal.

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Geert Verstraeten

Joël Brehmen

Managing Partner Audit and Risk Advisory

Joël Brehmen has over 22 years of experience in finance and operational audits & advisory with large European and US corporations. As a certified auditor he is responsible for global audits of listed and family businesses in the manufacturing and consumer industry. He has lead finance and control advisory projects such as transaction services, governance projects, internal controls and compliance support. His experience allows him to combine a strong business understanding with finance expertise. Joël has built a broad CFO and boards network in Belgium and abroad.

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Eric Callewaert

Managing Partner Clients & Industries

Eric Callewaert has over 18 years of experience providing consulting services to organisations. Focusing on strategy and operations, Eric has managed multiple large transformation projects for clients in a variety of different industries.

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Lieve Creten

Managing Partner Financial Advisory and Talent
Member of Global Financial Advisory (GFA) Executive and responsible for Talent within GFA

Lieve Creten is responsible for Deloitte Financial Advisory in Belgium comprising M&A, crisis and Real Estate services. She started her career at Deloitte in 1989 and has been a partner since 2000. She has wide-ranging experience in M&A transaction services, including bid support, (vendor) due diligence, valuations, M&A negotiations, deal structuring, carve-out and merger integration services. Lieve serves both private equity and corporate clients and has significant experience with acquisition and vendor advice.

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Lieve Creten

Tom Declercq

Managing Partner Tax and Legal

Tom Declercq has been Managing Partner of the Belgian Global Employer Services Practice since 2005 and was GES EMEA Regional Leader from 2011 to 2014. He has over 20 years of experience in Belgian and international individual taxation and social security planning.

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Tom Declercq

Nikolaas Tahon

Managing Partner Accountancy and Private & Family Business

Nikolaas Tahon combines accountancy, financial, tax and legal expertise to advise SMEs and family companies. In his role as sparring partner of business owners and their management, Nikolaas focuses on financial and operational reporting and planning, financial performance analysis, defining areas of improvement and action plans, strategic decision making, and outlining the continuity of management and shareholding of family companies. Nikolaas is also responsible for the full range of Deloitte offerings to Private & Family Businesses.

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Nikolaas Tahon

Rolf Driesen

Managing Partner Consulting

Rolf is Managing Partner of the Consulting practice in Belgium, a practice with 800 consultants working across 3 Service Areas: Strategy & Operations, Human Capital and Technology.

The last 18 years, as Consulting partner, Rolf advised clients across a variety of industries to deliver their critical business transformation programs. These programs include shared services, outsourcing, offshoring and business portfolio changes and restructurings. He also leads the account relationship for 3 clients: Ontex Group, Euroclear and Terumo Europe.

Rolf holds a commercial engineering degree and a MBA from Vlerick. Prior to joining consulting he was scientific researcher at Vlerick and controller at Air Products and Chemicals responsible for the Bulk Business in the Benelux.

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Koen Vandaele
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