If both parties of a joint tax filing died in 2017, do I use their SS # or assigned Tax ID number?

[poppogirl]

I am filing for my parents who both died in 2017.  Not sure if I should use Social Security Numbers or Tax ID numbers.

[LeeM · Accepted solution]

First, my condolences for your loss. You should use their Social Security numbers for their personal return.

[BobinCT]

She seems to have the desktop version.