What's the business code used for?
by TurboTax • 
Updated March 19, 2026 2:51 PM
Business codes are used by the IRS to categorize your business for statistical purposes only. The code you enter won't affect the outcome of your tax return.
In Wages & Income, go to Self-employment income and expenses, and select Add/Edit.
Under your business information, select Edit.
Under Business summary, select Edit next to Your [business name] info.
In the Tax Details section, select Edit under Business code.
Update your business code on the Let’s look up your business code screen.
