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Employee Plans Compliance Unit (EPCU) – Data Analysis Validation Missing or Invalid Business Code Project

EPCU is contacting Forms 5500-EZ or 5500-SF filers whose returns did not list a valid business code for plan years 2011 and 2012.

Why did I receive an EPCU Compliance Check Letter?

Your plan’s Form 5500-EZ or Form 5500-SF for plan years ending in 2011 and 2012 did not list a business code or listed an incomplete or invalid code on line 2d.

What is the EPCU attempting to determine?

We’re trying to determine the plan sponsor’s principal business code designed to classify an enterprise by the type of activity in which it is engaged. The letter will inform plan sponsors how to amend their returns to include the business code.

Our primary goal is to correct and verify the business codes on the selected returns, so that we have useful information. Additional goals are to identify the underlying causes for missing codes and to make recommendations to improve our systems.

What actions do I need to take?

Please provide a timely response to the information request by reviewing the provided list of business codes (they are based on the North American Industry Classification System) and reporting the code that best describes the nature of the plan sponsor’s business.

You should also file an amended return and list the appropriate business code on line 2d. Our letter contains brief filing information and sources of additional information you may need. You should file your amended return with the Department of Labor (Form 5500-SF) or the IRS Service Center (Form 5500-EZ).

If you have questions

Please feel free to email us and we will be glad to answer any questions you have about the project and how it relates to you. Please include “Business Codes” in the Subject line of the message. We regret that we cannot respond to technical questions unrelated to your compliance check.


The Internal Revenue Service performs systemic line-by-line checks on numerous filed returns to ensure the information received is valid and consistent.

Additional resources

Page Last Reviewed or Updated: 08-Sep-2015