Senior U.S. international tax
judgment for global families
and their advisors.
IWTA is built around direct access to experienced U.S. international tax counsel. We advise global families, fiduciaries, family offices, attorneys, and private client advisors on the U.S. tax issues that arise when lives, assets, trusts, entities, and reporting obligations cross borders.
Jack Brister is the Founder and Principal of IWTA, a U.S. international tax advisory firm focused on global families, fiduciaries, and the private client professionals who serve them. His work centers on complex cross-border tax issues, including foreign trusts, U.S. reporting obligations, inbound planning, expatriation, and the U.S. tax consequences of international wealth structures.
Jack advises clients and collaborating professionals with a technical, practical, and confidential approach. He is often engaged where U.S. tax rules intersect with foreign trusts, non-U.S. family wealth, global mobility, and multi-jurisdictional planning.
We begin with the governing U.S. tax rules, reporting obligations, and planning consequences. Our goal is to provide analysis that is accurate, supportable, and useful to the advisor or family making the decision.
We work alongside attorneys, fiduciaries, family offices, and private client advisors. Our role is to clarify the U.S. tax issues while respecting existing client relationships and professional responsibilities.
Complex rules are translated into clear guidance, next steps, and documentation. We focus on what the client and advisory team need to know, decide, and do.