Get your taxes done using TurboTax

You're correct, QSBS stock sales are excluded per section 1202.  Normally it would be reported on form 1099-B, but if you didn't receive one, here is what to do:

1. On the Federal tab, search for 1099-B and hten Jump to form 1099-B.
2. Select "this is a small business stock"
3. When it asks you if you want to adjust the cost basis check the top box that says "Help me figure out my cost basis" 
4. Go through steps.
5. At the end, look for the "qualified small business 1202 exclusion" options

Here are screenshots:

@randomuser2249