I usually work around 16 hours a week so I stay under SGA
Each year for the past 6-7 years I get an increase in my SSDI check as they base it on my work history including the past year.
What happens is around May or so I get a "larger" check as my benefits now include the wages I made the past year. June and the rest of the year is at the new higher rate.
This year it is close to September and I haven't gotten my "We check your wages to see if you are eligible for more SSDI $ due to your work history" letter yet.
For example suppose my SSDI was $500 and my wages for last year say an increase of $17.
Jan april $500
My may check would be $568
june Dec $517