Our Team

Antoine Guillaud

President of IMS, Advisor to the French Ministry of Foreign Commerce

Expert Comptable

Antoine Guillaud, President of IMS and founding partner of IAS, is an Expert Comptable with more than 20 years of experience assisting foreign companies establish themselves in the US market.

Before founding International Management Solutions in 1998, Antoine was a partner at McGladrey & Pullen in Chicago in the International Services department. Prior to his post in the USA, Antoine worked in England for three years with Robson Rhodes, now member of Grant Thornton, and five years in Paris with Salustro Reydel, now a member of KPMG.

In addition to his established career in the industry, Antoine Guillaud has served on the Board of Directors of the French American Chamber of commerce of Chicago and is a Conseiller du Commerce Exterieur de la France (Advisor to the National Committee of French Foreign Trade).

Connect on LinkedIn

Hugues Retif

Senior Manager, Director of Operations, Chicago Office

French accounting Master’s Degree

Hugues has assisted French companies to set up their business in the USA for more than 15 years. He has an extensive experience in accounting and was working with the CPA firm Barclais prior to joining IMS in Chicago.

Hugues also worked at Natixis Pramex International in New York, the subsidiary of a premier French investment bank.

Connect on LinkedIn

Charlotte Labat

Senior Manager, Bordeaux Office

Expert Comptable

Charlotte has more than 20 years of professional experience in the field, including 14 years with IMS. She has worked 7 years at the IMS Chicago office. Now based in France, Charlotte additionally acts as Senior Manager of the Bordeaux office and provides support to our European clients.

Connect on LinkedIn

Ben Troch

Client Manager, Benelux

Master Degree of Taxation & Master Degree of Laws in Belgium

Ben has over 3 years of experience working with international as well as European clients, especially in the field of income taxation and international mobility. Prior to his move to the U.S., Ben worked as a Senior Tax Consultant within the PwC People & Organization department in Brussels.

In his role as Tax Senior, Ben provides various Tax & Consultancy Services. He is based in the Chicago office but is also frequently present in our New York office.

Ben is available to provide our European customers with the best support possible.

Connect on LinkedIn

Michael Richter

Managing Partner, IAS


Michael has over 15 years of experience in the audit of US subsidiaries of foreign companies, in particular with French and German companies. Before starting his career as an auditor, Michael was an engineer and worked in industry for 11 years.

He joined IAS upon creation as the partner in charge of Audit and the Managing Partner of IAS.

Connect on LinkedIn