Laurent Decaen Partner - Head of Advisory Luxembourg City +352 40 12 99 49 26


Laurent has over 25 years audit and assurance experience for the financial sector (USA, United Kingdom, Luxembourg and France) including insurance, banking, asset management activities (UCITS, hedge funds, private equity and real estate structures) and public entities. Since June 2019 he is Leader of Advisory of Grant Thornton Luxembourg.

Laurent has an extensive international experience in audit services, and especially for the financial sector and the PFS (Professionals of the Financial Sector). He is serving numerous international organisations including investment managers, fund administrators, promoters of private equity and real estate structures in addition to PFS.

Serving a fast growing private equity sector in Luxembourg, he has helped launch Grant Thornton’s valuation services in Luxembourg, bringing his international business experience to deal makers, promoters, asset managers and administrative agents demanding those services.

He has a strong practical experience of auditing SIF (Specialised Investment Funds) at the international level. He has a wide expertise in IFRS standards (notably IAS 39, financial instruments and IFRS 4, insurance contracts) for international groups. He also has a strong knowledge of US GAAP.

Laurent started as an Auditor in 1990. He had previous professional experiences at Mazars Luxembourg as Managing Partner, and previously at Mazars (UK), Deloitte (Luxembourg) and KPMG (USA and France) prior to joining Grant Thornton in 2013.



  • Institut des Réviseurs d’Entreprises (Luxembourg)
  • AICPA (« American Institute of CPAs ») 
  • MSCPA (« Massachusetts Society of Certified Public Accountants »)
  • ICAEW (« Institute of Chartered Accountants in England and Wales »)
  • Réviseur d’Entreprises Agréé (Luxembourg)
  • Expert-comptable (France)
  • Certified Public Accountant (USA)
  • Chartered Accountant (UK)
  • MBA - Pace University, Lubin School of Business (New-York)