Get your taxes done using TurboTax

If you do not intend to continue this line of work, meaning this was a one-time event, you can enter your 1099-NEC as other income.  If you intend to teach more lectures at this university, or other places, you are considered an independent contractor, and the IRS (not TurboTax) defines that work as self-employed work.  To report self-employed income on your tax return, you must file Schedule C.  You are not, however, required to have a name for your business.  You can simply leave the income (and expenses) for the work as shown with your name and social security number.

To delete your Schedule C and enter your 1099-NEC as other (sporadic) income in TurboTax Online please follow these steps:

1. Within your return in TurboTax Online search for Schedule C.
2. Click the Jump to Schedule C link in the search results.
3. If you get to a self-employment summary screen, delete the self-employment income line with the trash can icon.
4. If you get to the question Did you have any self-employment income or expenses? answer No. 
5. Go to the Wages & Expenses section of your tax return
6. Click Edit/Add for your form 1099-NEC
7. Input the details of your 1099-NEC and click Continue
8. Answer the questions and Continue until you get to the Does one of these uncommon situations apply? page
9. Choose This is not money earned as an employee or self-employed individual, it is from a sporadic activity or hobby (this is not common) and click Continue

If you intend to continue to teach in other places, you can see Am I considered self-employed? and What self-employed expenses can I deduct? for more details to report your Schedule C.