A penalty specifically for taxpayers who have made a mistake on their return. That's how I explain the accuracy related penalty to taxpayers. This penalty carries a punch as well, with 20% of the tax the IRS didn't receive due to the taxpayer making a mistake. This seems harsh out of context. The reason for this harshness is because the IRS considers these "mistakes" to be intentional due to taxpayer negligence. This is one of the reasons at my firm that we encourage our clients to take their time when filling out the intake form and gathering their documents. Omitting an income document can be costly in the end to both you and your client. The IRS will hit your client with penalties that they could have avoided, and you may compromise the integrity of your firm.

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.


