Rita Ryan is the Founder of RRITS and a seasoned Tax Attorney with more than 18 years of experience advising clients on cross-border personal/business taxation, international investment structuring, multi-jurisdictional estate planning, and U.S. tax compliance obligations arising from global activities and holdings. She is widely regarded for her ability to navigate complex international tax regimes and translate evolving regulatory requirements into practical, strategic guidance.

In addition to her client-facing work, Rita serves as a trusted advisor to fellow tax professionals, providing specialized support in identifying international reporting obligations, advising on complex filings, and reviewing workpapers and forms to ensure technical accuracy in an increasingly dynamic international compliance environment.

Prior to founding RRITS, Rita served as Chief Financial Officer and Head of Private Client Services at M+, where she focused on integrated tax, business, and wealth preservation planning for high-net-worth business owners and their families. Earlier in her career, she founded and led Wolf & Co.’s International Tax Services Practice, advising both individuals and entities on the tax planning and compliance aspects of international ownership structures. Rita began her legal career in private practice as an Associate Attorney at Vacovec, Mayotte & Singer, LLP, concentrating on international and domestic taxation, estate planning, and tax controversy matters.

Rita is also an Adjunct Professor in the Graduate Tax Program at Boston University School of Law, where she co-founded and co-teaches the course Foreign Information Reporting and Withholding. In addition, she regularly teaches advanced international tax topics for Tax Practice Pros, LumiQ, and the National Association of Enrolled Agents, contributing to the education of practitioners nationwide.

Frank Agostino is one of the most accomplished tax controversy attorneys in the country, with more than four decades of litigation experience and a string of landmark victories that have reshaped IRS enforcement and Tax Court procedure — including Commissioner v. Zuch before the U.S. Supreme Court (2025) and Chai v. Commissioner in the Second Circuit (2017).

Because of Frank’s stellar reputation in the tax bar, he has been ranked in Chambers in Band 1 for Tax: Fraud Nationwide (USA) and in Band 1 for High Net Worth Private Client: Tax.

A former IRS District Counsel attorney and Special Assistant U.S. Attorney, Frank has also taught tax controversy at Seton Hall and Rutgers Law, and currently serves on the Advisory Board of the Journal of Tax Practice and Procedure.

Marina Hernandez is a Certified Financial Planner™, Enrolled Agent, and Global Financial Planner with a specialized focus on U.S.–Swiss cross-border planning. She founded MHTax in 2009 and Swiss American Wealth Advisors in 2020 to provide integrated tax and wealth guidance to international families seeking clarity, simplicity, and objective advice.

Since 2016, Marina has served as an instructor with Tax Practice Pro and has been teaching with the Global Financial Planning Institute since 2020. She is passionate about equipping Enrolled Agents, CPAs, CFP® professionals, and other advisors with the technical expertise and practical insight needed to serve globally mobile clients, including Americans living abroad and foreign nationals relocating to the United States.

Outside of her professional work, Marina supports educational initiatives for underserved children in the U.S. and South America. She also enjoys traveling with her husband to visit their children, extended family, and friends around the world.

John began his tax career in 1987 and passed the IRS Special Enrollment Exam in 1995. A National Tax Practice Institute fellow and SUNY Oswego graduate, he specializes in taxation for non-resident aliens, U.S. citizens living abroad, S corps, legal marijuana businesses, and cryptocurrency.

John is passionate about giving back to the profession. Every year on Giving Tuesday, Tax Practice Pro offers a free ethics webinar, and its weekly Tax Update webinars keep tax professionals informed on the latest developments. These programs combine practical guidance, strategies, and insights to help practitioners work smarter, faster, and with confidence.

Whether you’re just starting your career or expanding an established practice, Tax Practice Pro and John Sheeley, EA provide the education, coaching, and community support tax professionals need to succeed.