I'm trying to find out if FICA taxes (Social Security and Medicare) are paid on short term capital gains from selling private stock. The answers around the web are conflicting.
These links say there is no difference between short term capital gain income and regular income, they don't mention FICA taxes:
https://turbotax.intuit.com/tax-tips/investments-and-taxes/guide-to-short-term-vs-long-term-capital-...
http://time.com/money/collection-post/2791159/how-are-stocks-taxed/
Here I read that FICA taxes aren't due on capital gains, but the answer doesn't explicitly state short term capital gains:
https://www.nerdwallet.com/ask/question/capital-gains-income-tax-social-security-42895
On the Social Security website I read that the sell of stocks are not exempt from the earnings test, which implies they count as regular earnings, and require social security taxes:
https://www.ssa.gov/OP_Home/handbook/handbook.18/handbook-1812.html
