About Us

A wise man once said, “in this world nothing can be said to be certain, except death and taxes.” While death can be an unforeseeable certainty, your income taxes don’t necessarily have to be an anxiety-ridden emergency, as it’s commonly perceived to be. For the majority of its existence, America didn’t even have an income tax until 1913 when the 16th amendment was ratified. Then in 1924, in a historical court case, the US Supreme Court ruled that “Congress has power to tax the income received by a native citizen of the United States domiciled abroad from property situated abroad.” This introduced the legal precedent that US citizens are taxed on their worldwide income, regardless of the location of the source of their income, residence or domicile, as described in clause D of the last page of every US passport. As the years passed by, additions to the law have made the situation for US citizens abroad even more complex and complicated, however once simple fact remains. Every US citizen whose annual, gross, worldwide income exceeds certain thresholds must file a US tax return every year. Failure to do so can result in federal civil and potential criminal penalties.

For US citizens residing outside of the US, completing your annual tax return can be a long, arduous task. We take the anxiety and uncertainty out of the annual obligation that international Americans are subject to. Millions of Americans living overseas don’t know what to do, what information to report, what forms to complete or how to contact the tax authorities in the States to stay compliant with the law. Furthermore, for US citizens that own and operate businesses in a tax jurisdiction outside of the US, issues can arise as to how to establish the proper entity structure, how to attract investment and how to pay yourself. Whether your income is 100% foreign sourced, or 100% US sourced while residing overseas, or a combination of both, we use the most up to date tools and resources to make sure our clients take advantage of all of the benefits that they possibly can in the US tax code. We are serious about making sure that all of our clients’ tax returns are completed accurately, and filed by the deadline every year. This enables our clients to maintain compliance with the US tax code, while paying only to right amount of income tax that they’re legally obligated to pay.

Our Team


Matthew Stevens 

Managing Director


Noi Headshot.jpg

Sudaduang (Noi) Pruengrung

Office Manager


Matthew has been helping people complete their US taxes for the last 18 years. He got his initial start working part-time at places like H & R Block while in college, and has grown into a consummate professional by helping US taxpayers all over the world from all walks of life. Matthew is passionate about developing customized strategies for his clients to minimize their US tax while adhering to the US tax code. Matthew is an Enrolled Agent with the IRS, has a BA in Business Economics from UC Santa Barbara, and an MBA from CSU Long Beach. 

Noi has been helping US Taxpayers in Thailand and throughout Asia stay compliant with the US Tax Code for nearly 30 years. As a legacy employee of Taxplan Ltd, Noi has spent decades coordinating the correspondence between our clients and the tax authorities in the US. As a diligent, dedicated professional, Noi is committed to holding the staff of Global US Tax Plan accountable so that our clients' needs our met with the utmost efficiency and compotency.

Moo HaM Headshot.jpg

Warodom Buathong

Marketing Director


PalMie Ice Photo Collage.jpg

Vanicha (Ice) Rawangkarn &

Nuperm (Palmie) Saithongmat

Administrative Support Specialists

Icing@GlobalUSTaxPlan.com &


Warodom is a charismatic, conscientious and ambitious leader on the Global US Tax Plan team. His focused attention and thorough work ethic enables our team to excel by helping his colleagues expand their skill set, helping our clients resolve their problems, and helping our company increase it's brand awareness. Warodom has a BA from Assumption University and an MA in Marketing Management from Middlesex University London.

Our office would not be able to function without our lovely support staff. Ice and Palmie continuously work hard day in and day out to make sure that our office functions smoothly. Ice and Palmie's delightful personalities and attention to detail helps us do what we do best, serve our clients with authenticity, reliability and integrity.