One of my greatest frustrations as a tax writer is that I just don’t have the time to cover everything that I notice. Early in my blogging career, when I was younger and had more energy, I set myself on a Monday, Wednesday, Friday schedule like the college professors I envied. Even that did not keep up with everything I noticed, so periodically I would do a post that had short blurbs about interesting things I didn’t dig further on. Here is an example from 2010 of a post that covers an entity not considered a church by the IRS, S corp shareholder basis issues, definition of alimony and two Chief Counsel Advices on TEFRA issues. So here are some things for 2025, that I opened a file on but never managed to make an article with.

Small Mistakes With Huge Costs for Your Client’s Tax Returns
We’ve all been there. A client walks into your office and, somewhere in the conversation, you realize that a seemingly minor oversight, a missed deadline, a form nobody filed, an election nobody mentioned, has spiraled into a five- or six-figure tax problem. In my years of practice, some of the most expensive mistakes I’ve seen weren’t the result of aggressive planning gone wrong. They were small, quiet errors. The kind that happens when a deadline slips, an election isn’t made, or a form gets overlooked entirely. The tax code is unforgiving in these situations, and the IRS has little sympathy for “I didn’t know.” This article walks through some of the most common, and most costly, small mistakes that can devastate your client’s tax situation, along with practical guidance for avoiding them.


