13xieju
New Member

My employee did not withhold my FICA (social security and medicare). I already filed my taxes. What should I do?

My employee thought I was on student visa and did not have to pay FICA. However, I passed the substantial presence and need to pay FICA. 

I only realized this after I already filed my taxes and my W2 says 0 withheld for FICA. What should I do in this case? Will IRS find out about this? Should I just wait for IRS to respond?