Self-employment income:

• includes money you earn as a contractor, consultant, freelancer, or other independent worker.
• Is reported on 1099-MISC (Box 7), 1099-K (Box 1a), or as cash, check or credit card sales transactions.
• Requires you to complete Schedule C
• You can deduct expense related to the income.
• Requires you to pay self-employment tax.

1. Sign In - Continue your/take me to my return
2. Go to Federal Taxes (or Business, if shown), then Income & Expenses
   
3. Edit/Add/Update Self-Employment/Schedule C Income/Expenses
   
4. On the page titled Here's the business info we have so far, Add/Edit income items  
   
5. Next page is titled Your .... Business. You can enter income under business income and you can enter taxes paid under Other Common Business Expenses - Tax and License Expenses

https://www.irs.gov/publications/p535/ch05.html