When Americans speak of leaving America, they generally are expressing a desire to live elsewhere in the world for cultural reasons or due to cost of living. These people are called expatriates, aka expats. For clarity, a mere visit to another country does not make you an expat. To be an expat, the move needs to be long-term and often includes working or retiring in the new country. Expats live somewhere outside the U.S., but still have a tax obligation to the U.S. and possibly the country they move to. That will be the focus of this article.

Kwong v. United States: A Pandemic-Era Decision That Could Reshape Tax Deadlines, Penalties, and Refund Opportunities
The 2025 court decision, Kwong v. United States, is quietly gaining traction among tax professionals for exactly these reasons. Its implications could be far-reaching, potentially opening the door to refund claims, penalty abatements, and revived tax deadlines that many assumed were long closed. But there’s a catch: the opportunity to act may be time-sensitive, and the window to preserve claims could begin closing in just a few short weeks. Here’s what the court actually decided and why it matters now.


