For business owners with a relatively clear understanding of their business's main purpose, the IRS publishes a regularly updated list of principal business activity codes, which you can reference when filing taxes. This list is typically included in the instructions you would receive alongside busin...
The IRS mandates that some businesses include their Principal Business Code on their tax returns. PBCs are based on NAICS codes, and you can find them on Schedule C of the IRS tax code. Origination of NAICS The U.S. Office of Statistical Standards developed the idea of classifying businesses...
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