The IRS came out with guidance last month on making Deferred Social Security tax payments.  They mention making payments via EFTPS, which seems the easiest (only?) route.  I tried doing this so that I can provide guidance to my clients as well as screenshots.  One thing I noticed is that when you select the Tax Period, I used December 2020 (which seemed logical since the guidance says you need to apply to 2020), and I got an error that says it's an invalid period.  According to EFTPS, the only valid periods for deferred SS tax payments are March 2020 to November 2020.  Seems odd that they give individuals 9 different months to select.  I was planning to tell my clients to use November 2020.  I can't imagine it matters which month they select between March & November. 

Curious if anyone else has encountered this and how they are advising clients.