About Us

Firm Profile

Welcome to American Expatriate Tax!  We specialize in U.S. expatriate and foreign national taxation and are a part of Contexo Mobility & Tax Consulting Ltd, which was founded in Hong Kong in 2014 and relocated to London in January 2023.  Together, we help companies and individuals navigate through the complexities of global mobility and related tax issues.  Here is where you will find a blend of expertise from Big 4 accounting firms and Fortune Global 500 companies but the attention of a boutique consulting practice.

Our business plan is simple – we build our practice one client at a time based on long-lasting business relationships.  We pride ourselves on the uniquely holistic approach we take on global mobility, professional services you will find attentive, advice on which you can rely, solutions that are pragmatic and comprehensive, and U.S. expatriate tax services that are efficient.

We treat our clients' personal data with the utmost care.  Our client portal with 256-bit encryption (bank-level security) offers you a convenient and secure way to share tax data and documents with us anytime from anywhere, whether you are in Hong Kong, Shanghai, Singapore, London, or the UAE.

We are an Active Member of the National Association of Enrolled Agents (NAEA) in the United States.  Our professional staff are Enrolled Agents, the only federally-licensed tax practitioners who both specialize in taxation and have unlimited rights to represent taxpayers before the Internal Revenue Service; each professional staff is required to undergo a minimum of 30 hours of Continuing Professional Education every year in tax compliance, tax planning, accounting, and other related subject matters, to enhance professional proficiency in taxation and stay abreast of the latest developments.


Executive Profile

Jensen Leung, our founder and Managing Director, brings decades of international experience in international tax and global mobility since 1996 from working in the United States, United Arab Emirates, China, Singapore, and Hong Kong.  During his career in tax consulting with Big 4 accounting firms for 11 years and, subsequently, leadership roles in global mobility with some of the best known Fortune Global 500 companies, he has developed and implemented strategically-aligned mobility programs, structured cross-border corporate transactions and tax-efficient compensation packages, managed expatriate tax advisory, tax compliance, as well as international payroll, contributed to various greenfield and M&A projects, and supported countless mobile employees and senior executives.  He has proven successes in using this unique mix of professional and personal experience to his clients’ advantage.

Prior to founding American Expatriate Tax and Contexo Mobility, Jensen was the Global Head of Mobility, Executive Director, of Nomura and was responsible for formulating and executing mobility strategies that support the global investment bank of Japan’s largest securities firm with international expansion.  He had also held regional mobility leadership positions with Barclays, BP, as well as Flextronics and led a number of flagship engagements when he was with Big 4 accounting firms.

Jensen has a BBA in Organizational Behavior & Management from the University of Houston and has been an Enrolled Agent, licensed to practice before the Internal Revenue Service, since 1999.  He also contributes actively to the development of expatriate tax and global mobility professionals.  He has been speakers at regional and national conferences held by the American Payroll Association, Deloitte, and Forum for Expatriate Management.  He served on the committees of Worldwide ERC in Asia Pacific as well as the Forum for Expatriate Management’s Hong Kong Chapter and was on Deloitte Hong Kong’s Client Advisory Board.  In addition, he is an All-Star contributor to Intuit's Tax Pro Community and has been quoted in various industry publications.

You may follow the link below for Jensen’s LinkedIn profile and click here for a sample of Jensen’s testimonials.
View Jensen Leung's profile on LinkedIn


What Others Say About Us

We were very happy we chose to work with Contexo Mobility for the past few years as it has made the process of filing taxes so much simpler for us. Their attention to detail, knowledge and feedback have been particularly helpful to us. Great customer service and responsiveness too! I'd highly recommend using them if you are looking for help with your taxes - we for sure will continue to do so!

Great service and attention to details…

For the past 3 years, Jensen has provided me with EXCELLENT tax services, and I would highly recommend him to anyone. Throughout the course of working with Jensen, I have been blown away by his encyclopedic knowledge of tax codes (and thus his ability to prepare my returns in the most efficient way possible), his quick and thorough responses to all of my emails (and I send a lot of emails) and his competitive pricing. I have been, and I continue to be overwhelmingly satisfied by the quality of his customer service, the depth of their tax knowledge and thoroughness of his processes. If you want to sleep soundly at night knowing that your taxes have been prepared correctly, completely and in the most efficient way possible, you’ll want to choose Jensen.

Excellent Tax Service…

Testimonial 4

Director, Payroll Operations

Testimonial 3

Director, Global Mobility Services

Testimonial 2

Vice President, Global Mobility & Stock Plan

Testimonial 1

Global Head of Equity and Deferred Compensation