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.

10 Ways Certified Tax Planners Can Prepare for Increased IRS Focus on Documentation During Audits
The IRS is ramping up scrutiny of high-net-worth individuals and businesses, increasing audit rates by over 50% for those earning above $10 million. Recent IRS initiatives backed by Inflation Reduction Act funding have intensified enforcement on wealthy taxpayers, large partnerships, real estate investors, and tech businesses. IRS agents are digging deeper during audits and expecting taxpayers to produce more documentation to support every position on their returns. To help clients navigate this environment, certified tax planners must take proactive steps to bolster documentation and audit readiness. Below are ten authoritative strategies, complete with industry examples, IRS policy references, and best practices, to prepare for the increased IRS focus on documentation.