The Cohan rule is named for George M. Cohan. George Michael Cohan (1878 – 1942) was a theatrical producer. In the decade before World War I, he was called the “man who owned Broadway” and is considered the father of American musical comedy. In 1940 he was awarded the Congressional Gold Medal for his contribution to morale during World War I with his songs “You’re a Grand Old Flag” and “Over There,” the first time the medal was awarded to someone in an artistic field. But his most enduring legacy may be the tax rule that shared its name.

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.


