Our Team


Managing Member & Founder
+1 (212) 256 -1142

Jack has more than 25 years of experience.  He specializes in U.S. tax planning and compliance for non-U.S. families with international wealth and asset protection structures which include foreign trusts, estates and foundations that have a U.S. connection; and foreign companies wanting to do business in the U.S. Jack also specializes in foreign investment in U.S. real property, and other U.S. assets, pre-immigration tax planning, U.S. expatriation matters, U.S. persons in receipt of foreign gifts and inheritances, foreign accounts and assets compliance, offshore voluntary disclosures, FATCA registration, executives working and living abroad and annual reporting.

Jack is a noted expert in his field and has been widely published, in addition to speaking at numerous international engagements, Jack has also been named a Citywealth Top 100 US Wealth Advisor.

Fitzberg Mensah

International Tax Manager

Fitzberg (Fitz) is a key member of our team and oversees the firm’s tax compliance service team. He has 8 years of international tax experience. He is of Ghanaian origins.  He and his family are from the City of Accra in Ghana (West Africa). In addition to English, his first language is Twi and he also speaks Ga

“IWTA has provided me with the opportunity to advance my career with the exemplary mentoring program.  Additionally, the work environment has given me the platform to be successful with a friendly and open-door policy.”

Jay Son

International Tax Associate

Jay is a key member of our tax compliance team.  He has gain significant experience working with larger firms.  He is of Korean and his family is from Daegu, South Korea. In addition to English Jay speaks fluent Korean.  

“I have enjoyed working with talented and thoughtful people at IWTA.  I love learning new things here – especially sophisticated skills in the international tax field”

Arthur Khasanov

International Tax Associate

Arthur is a key member of our tax compliance service team.  He has gained significant experience with Price Waterhouse Coopers (PwC) and a mid-size firm.  He is of Tatar origins.  He and his family are from Tashkent,Uzbekistan.  In addition to English he speaks fluent Russian.  

““I joined IWTA a short while ago. I previously had international tax experience from a large international firm and a mid-size firm. While at IWTA, I have conducted tax research and gathered information from top management which enabled me to address more complex international tax situations in a friendly work environment.”

DeVante Montéz

Finance Administrator

DeVante is a key member of our administrative team.  He has worked in the tax field for approximately 6 years.  

“There is a distinct contrast between a job and a career.  Within an efficient and harmonious organization such as IWTA, I have found my career path.  A path fueling my future and advancing my work experience, lifelong journey and personal goals.  Here at IWTA, there’s the potential for immense growth.”

Gioviana Kenol

Office Manager

Gioviana(Gio) is a key member of our administrative staff.  She helps keep the office running like a well-oiled machine.  She and her family are of Haitian heritage originating from Saint Marc, Haiti.  In addition to English, Gio speaks Haitian Creole and French. 

“Although I have only been with IWTA for a short time, I’ve already acquired immeasurable skills that will last me a lifetime. IWTA is a firm where team work really makes the dream work.”