What is a check from united states treasury for soc sec for ins?

You will be getting a separate letter about this.

Neither the IRS nor SSA notifies TT.

<a rel="nofollow" target="_blank" href="https://www.quora.com/What-does-SOC-SEC-FOR-INS-mean">https://www.quora.com/What-does-SOC-SEC-FOR-INS-mean</a>

but what is it for??

Sounds like a Social Security Disability Insurance payment. It is not from the IRS.

The quora.com link not very helpful

hmm it is not disability...

Please call the Social Security Admin when they open on Monday.
We are an income tax forum here.