If the parent's Social Security number is in box 2 of the Form SSA-1099 then it would be reported on the parent's tax return. If that is the only income the parent received for the year then there is no need to file the parent's tax return.
Thanks, Donin. I think I wasn't clear:
I am filing my own taxes; this isn't about the parent's tax return and is not part of the estate.
My adult siblings and I each received checks for the parent's O/A/O.
I already have entered my own Social Security.
Where do I enter the O/A/O amount?
Do I just add it to my SS amount?
Well, you indicated you received two Form SSA-1099's. If both of the SSA-1099 have your Social Security number in box 2 then you would add the amounts in box 5 together and enter the total on your tax return. Is this what you received?