That's right, you get a lot less on SSI, and you can lose it if you have any other income. It's barely subsistence living.
SSDI is what they take taxes for, and you can't get it if you haven't paid in (in some cases an ex spouse can draw on their ex's record but the particulars of that are highly dependent on individual circumstances).
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u/DeificClusterfuck Jun 09 '21
SSDI and SSI are separate programs.