Substantial Gainful Activity (SGA) is the amount of money you can earn from wages and still be eligible for Social Security disability benefits. The SGA amount is important for two classes of people:
A person applying for disability benefits must have (or be expected to have) a period of 12 consecutive months with wages below SGA (subject, of course, to the rules for unsuccessful work attempts and Impairment Related Work Expenses).
A person receiving Title II disability benefits can earn up to the SGA amount and still receive benefits (be sure to also take a look at the trial work rules).
The SGA amount for 2021 is $1,310. Each year it is adjusted for inflation. For 2022, it will be $1,350. Here is a table showing SGA amounts by year.