When is a business really a business? As Supreme Court Justice Potter Stewart said in 1964, “I know it when I see it.” The US Tax Court, however, maintains a slightly less subjective standard. The Roots were pretty sure they were running a bona fide business; the IRS, however, didn’t share the sentiment. And since we’re reading about them in a segment called “Lessons Learned,” one should assume it did not go the way the Roots would have liked.

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.


