If you receive SSDI — or you're applying — the term Substantial Gainful Activity (SGA) isn't just bureaucratic language. It's the earnings threshold that Social Security uses to decide whether you're working "too much" to qualify as disabled. In 2025, that number has been updated, and understanding what it means (and what it doesn't) is essential before you earn a single paycheck while on benefits.
Substantial Gainful Activity is the SSA's standard for measuring whether a person's work activity is significant enough to disqualify them from SSDI. The SSA looks at two things:
If your monthly earnings from work exceed the SGA threshold, SSA generally considers you capable of engaging in substantial work — which can affect your eligibility or your ongoing benefits.
The SGA threshold adjusts annually based on changes in the national average wage index. For 2025, the amounts are:
| Category | Monthly SGA Limit (2025) |
|---|---|
| Non-blind individuals | $1,620/month |
| Blind individuals (statutory blindness) | $2,700/month |
These figures represent gross earnings before taxes or deductions. If your countable monthly earnings stay below these thresholds, SSA does not consider you to be engaging in SGA.
The higher limit for blind recipients reflects a long-standing statutory distinction — Congress has historically set a more generous threshold for people whose disability is statutory blindness.
SGA works differently depending on where you are in the SSDI process.
If you are currently working when you apply for SSDI and your monthly earnings exceed the SGA limit, SSA will typically deny your claim at the very first step of the five-step sequential evaluation — before even reviewing your medical records. Earning above SGA is considered evidence that you can work at a substantial level, which is the core test for disability.
If your earnings are below SGA, SSA moves forward and evaluates your medical condition, work history, and functional limitations.
Once you're approved for SSDI, the rules shift. SSA doesn't immediately cut off your benefits the moment you start working. Instead, you're entitled to a Trial Work Period (TWP) — nine months (not necessarily consecutive) within a rolling 60-month window during which you can test your ability to work without losing benefits, regardless of how much you earn.
In 2025, any month in which you earn more than $1,110 counts as a trial work month. (This threshold also adjusts annually and is separate from the SGA amount.)
Once you've used your nine trial work months, SSA begins applying the SGA test in earnest. During the Extended Period of Eligibility (EPE) — which lasts 36 months after the TWP — your benefits can be suspended or reinstated month to month depending on whether your earnings exceed SGA.
If your earnings rise above $1,620/month (in 2025) during the EPE, your benefits stop for that month. If they fall back below SGA, benefits can resume without a new application.
Not every dollar you earn counts the same way. SSA may exclude certain amounts when calculating countable earnings:
These exclusions mean that two people earning identical gross wages could have very different countable earnings for SGA purposes.
The SGA limit is a fixed number — but how it applies to any given person depends on factors that vary widely:
Someone working part-time at $1,400/month gross may have countable earnings well below SGA after IRWEs are deducted. Someone self-employed at the same gross amount might face a different calculation entirely. The threshold is the same for everyone in a given category — but what feeds into that threshold is not. 📋
The SGA amount isn't just a gate for eligibility. It also connects to:
The $1,620 figure is easy to look up. How it interacts with your specific earnings, expenses, benefit start date, and work history is where the program gets complicated — and where the gap between knowing the rule and knowing your outcome becomes real. 🔍