Captive insurance remains one of the most closely examined tax planning strategies in use today, not because it is inherently flawed, but because small missteps can carry outsized consequences. Many taxpayers assume that careful formation and proper documentation are enough to protect the intended tax outcome. A recent Tax Court decision, Kadau v. Commissioner, serves as a reminder that those assumptions deserve closer scrutiny. The court’s analysis did not hinge on whether captive insurance can work, but on how a specific arrangement actually functioned in practice. For tax professionals advising clients who rely on micro-captives, the case raises important questions about where structures tend to break down, why some arrangements attract IRS attention while others do not, and what really separates a defensible captive from one that invites challenge.

A Court Just Bought Your Clients More Time on Clean Energy Tax Credits Here’s How to Use It
A federal district court just struck down an IRS rule that had been closing the door on a pretty compelling tax savings opportunity available to your clients today, the Section 48E Clean Electricity Investment Tax Credit. The ruling, handed down on June 6, 2026, reinstated a key pathway that allows investors to lock in credit eligibility for large-scale wind and solar projects a pathway the IRS had tried to eliminate just last year. The window is not wide open. July 4, 2026 is still the critical deadline, and the government will almost certainly appeal. But for advisors who act quickly, this ruling creates a genuine, time-sensitive planning opportunity. Here is what you need to understand, and what you should be doing right now.


