Updated September 16, 2020
SSI recipients will receive a $1,200 Economic Impact Payment with no further action needed on their part, unless you claim a child dependent who is 16 or younger. If you receive government benefits, aren’t required to file a tax return, and never received the additional $500 per qualifying child, use the Non-Filers: Enter Payment Info tool to update your information. SS, SSI, RR, and VA recipients must act before Wednesday, September 30 to receive their additional payment in October.
It is unclear whether SSDI recipients could qualify for this window to update their information, but it doesn’t hurt to try—at the end of the day, you should receive your additional $500 when you receive your refund in 2021 if you don’t get it sooner.