Yes, In fact, you’ll owe tax that you never had to pay as an employee. The self-employment tax (officially known as the SECA tax for Self-Employment Contributions Act tax) is the self-employed person's version of the FICA (Federal Insurance Contributions Act) tax paid by employers and employees for Social Security and Medicare, and it's due on your net earnings from self-employment.
Why am I paying self-employment tax?
https://ttlc.intuit.com/replies/4799028[Edited:02/15/2018 [6:28pm]]