If you're receiving SSDI benefits — or applying for them — one number shapes nearly every decision about working: the Substantial Gainful Activity (SGA) limit. In 2025, that threshold matters more than ever for understanding what SSA will and won't allow when it comes to earning income.
Substantial Gainful Activity is the term SSA uses to describe a level of work activity that is both substantial (involving significant physical or mental effort) and gainful (done for pay or profit). It's not just about how much you earn — SSA also considers the nature of the work itself — but in practice, the monthly dollar threshold is the line most claimants focus on.
If your earnings exceed the SGA limit, SSA generally considers you capable of supporting yourself through work, which affects both eligibility for benefits and continuation of benefits once you're approved.
For 2025, the SGA thresholds are:
| Category | Monthly SGA Limit (2025) |
|---|---|
| Non-blind SSDI recipients | $1,620/month |
| Blind SSDI recipients | $2,700/month |
These figures adjust annually based on changes in national average wages, so the numbers you see for prior years will be lower. Always verify the current year's threshold directly with SSA, as these amounts are updated each January.
The higher limit for blind recipients is set by statute and has historically been more generous than the standard SGA threshold.
SGA isn't a single gate — it comes into play at multiple points in the SSDI process.
When you first apply, SSA checks whether you are currently engaging in SGA. If your earnings exceed the monthly limit at the time of application, SSA will typically deny the claim at Step 1 of the five-step sequential evaluation — before even reviewing your medical records. This is the fastest path to a denial and the one most easily avoided by understanding the threshold before you file.
Once you're receiving SSDI, SGA becomes the benchmark for whether your benefits should continue or stop. SSA conducts Continuing Disability Reviews (CDRs) periodically, and work activity is one of the things they examine. Earning above SGA during a CDR period can trigger a cessation of benefits.
Here's where the rules get more nuanced. SSDI includes 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 immediately losing benefits, regardless of how much you earn.
In 2025, a month counts as a trial work month if you earn more than $1,110. That threshold is separate from the SGA amount.
After your nine trial work months are used, SSA applies the SGA test again. If you're still earning above $1,620/month, your benefits can be suspended or terminated. But the Extended Period of Eligibility (EPE) — a 36-month window following the TWP — gives you the ability to have benefits reinstated quickly in any month your earnings drop below SGA, without filing a new application.
Not every dollar you receive counts the same way. SSA can make work incentive deductions that reduce your countable earnings:
These deductions can meaningfully shift whether your earnings cross the SGA line — but calculating them accurately requires looking at your specific costs, work arrangement, and documentation.
The SGA threshold is a fixed number, but how it applies to any given person depends on several factors:
If you're self-employed, SSA doesn't simply look at your gross receipts. They evaluate your work using three tests: the significant services and substantial income test, the comparability test, and the worth of work test. This makes SGA determination for self-employed individuals considerably more complex than for traditional W-2 employees.
The 2025 SGA amount of $1,620 tells you where SSA draws the line. It doesn't tell you how your specific earnings, deductions, work history, or benefit status interact with that line. Two people earning $1,650 a month can have very different outcomes depending on their IRWEs, whether they're in a trial work period, and how SSA classifies their work arrangement.
That gap — between knowing the rule and knowing how it applies to your situation — is where individual circumstances do all the work.