Mark Anderson, US CPA in Thailand & US Expat Tax Help

  Filing season arrives every year, and for Americans living abroad, it brings a degree of complexity that no domestic tax software was ever designed to handle. The United States taxes its citizens on worldwide income regardless of where they live — and the rules governing exclusions, credits, foreign account reporting, and state obligations change annually. Before you file a single form, scheduling an expat CPA consultation is not simply good practice. In 2026, it is the single most important step you can take to protect your finances. This guide explains exactly what a US expat tax advisor does before filing season, what critical decisions get made in that consultation, and why the cost of skipping it can far exceed the cost of the consultation itself. What the US Tax System Actually Requires of Americans Abroad Many expats still believe that paying taxes in their host country satisfies their US obligations. It does not. The IRS requires US citizens and green card holders to fi...

  I've saved clients $6,000–$15,000 annually through S-Corp elections. But it's NOT right for everyone. Here's my decision framework after setting up 50+ expat S-Corps. Mark Anderson, CPA   ·  US Expat Tax & Business Specialist  ·  Bangkok, Thailand  ·  50+ S-Corps Established   Every few months, a self-employed expat sits across from me (virtually, these days) and says some version of the same thing: 'My accountant back home mentioned an S-Corp but said it was complicated. Is it worth it?' After setting up more than 50 S-Corps for American expats across Southeast Asia, Europe, and Latin America, I can tell you: sometimes it's the single best tax decision you'll make. And sometimes it's a complete waste of time and money. The difference comes down to a handful of factors that most generic tax guides never bother to explain. In this article, I'll walk you through exactly how S-Corp election works for expats, when it makes financial sense, how i...