The Firm

Diligent legal services which address difficult legal matters in multiple areas


The world has been gradually transformed into a place with less boundaries and more global mobility. Affluent families and prominent professionals can now move between places, launch new businesses and conduct investment strategies across the globe with ease and efficiency. GS Monteiro Law is a law firm with a mission to serve the needs of our clients in the landscape of this new era of globalization.

Our core belief is centered on the notion of sophistication and excellence in our work product, with a personalized relationship with the client. The firm is strategically engineered to apply our multicultural team of attorneys and our global network of professionals, to create an environment in which we can discuss ideas and solutions with our clients in their accustomed manner of conducting their family and business affairs.


GS Monteiro Law is focused on helping our international and domestic clients navigate the complex legal environment in the U.S. Our goal is to be recognized as the “trusted advisor” for affluent Latin American families and prominent individuals in need of tax, trust and wealth planning in the United States.

To accomplish this mission, we strive to provide our clients with the ability to express their challenges, needs and aspirations in a friendly environment. Beyond that, with our multidisciplinary approach, our firm designs client-specific solutions that anticipate the evolving international legal landscape.


Gessimbergue (“Gessie”) Monteiro


Gessimbergue (“Gessie”) Monteiro is the founding attorney at G.S. Monteiro Law, focused primarily on international tax, trust and wealth planning.

Mr. Monteiro concentrates his practice in the following areas: U.S. and international taxation, U.S. and international estate planning, sophisticated trust planning, pre-immigration tax planning, wealth preservation and investment planning, business succession planning, and U.S. and international tax and reporting compliance.

Mr. Monteiro advises (ultra) high-net-worth Latin American families and prominent individuals on the implementation of their (pre-immigration) tax planning in preparation for their move to the United States. Mr. Monteiro represents (ultra) high-net-worth Latin American families and their family offices on the design of cutting-edge strategies and implementation of tax-efficient structures for wealth preservation and investment management, including planning with directed trusts. Mr. Monteiro is a trusted advisor for affluent Latin American families in the process of transferring their legacy and family values to the next generations where Mr. Monteiro is focused on the implementation of their cross-border estate planning, including the creation of (foreign grantor) trusts. Mr. Monteiro assists (ultra) high-net-worth Latin American families and their financial and real estate advisors in the implementation of planning, including restructuring existing corporate structures for the acquisition or transfer of U.S. real estate by foreign persons.


Tax Section of the Florida Bar

Society of Trust & Estate Practitioners, Miami Branch (“STEP”)

Greater Miami Tax Institute (“GMTI”)

Bar & Court Admissions

Florida Bar

Brazilian Bar Association


University of Miami School of Law, LLM in Taxation.

University of Miami School of Law, J.D.

Universidade Paulista L.B. (Law)




Conversant in Spanish