I have a person living with us with self employment income. She doesn't qualify as a dependent. Where or how do I enter her self employment income?

You do not enter it on your tax return.  She will have to file a separate tax return.

 

You have to file an income tax return if your net earnings from self-employment were $400 or more. If your net earnings from self-employment were less than $400, you still have to file an income tax return if you meet any other filing requirement listed in the Form 1040 and 1040-SR instructions.

 

Please see: What are My Self-Employed Tax Obligations?

 

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