For more than 35 years, we have been providing full-service accounting, tax and consulting services to international clients throughout the USA, Mexico and Canada.




We are your bridge to navigating the financial, tax and business landscape of North America and pride ourselves in offering services tailored to our clients’ needs.

We have been assisting international companies in a wide range of industries since 1986. Our strength is guiding our clients to structure and grow their subsidiaries abroad. More specifically, we act as a link between parent and subsidiary companies in regards to financial reporting, tax services and management consulting.

Massat’s knowledge, a perfect mastery of the American, French and Mexican tax system and rules.
— Rachel Brunet,