I have been in the US since August 2016 under F1 status. I'm currently working as STEM OPT.
After I filed my 2020 taxes, I learned that F1 status are exempt from FICA taxes so I talked to my employer and they changed my tax status so that for year 2020, I got a w2-c and for 2021, they gave me a refund and no longer withheld FICA taxes since May 2021.
However, recently I learned that I'm no longer exempt from FICA taxes beginning 1/1/2021 since I'm considered a resident alien for tax purposes starting 2021.
I talked to my employer but I quit and changed my employer recently so they told me they can't fix it since I'm no longer getting paychecks from them.
What is the best way to fix this and pay back the FICA taxes that was supposed to be withheld from my income this year?
Should I just wait until next year when I file my 2021 tax return and fix it then? Or is there a way to pay IRS the FICA taxes that I was supposed to pay right now?
Also, I understand that my previous employer may not be able to take away the FICA taxes from my paycheck but should they still issue me a w2-c for this year or no?
