If you're receiving SSDI — or planning to apply — one of the most important numbers to understand is how much income you're allowed to earn. The Social Security Administration doesn't ban all work while on SSDI, but it does set strict thresholds that determine whether your benefits are at risk. Here's what those limits look like in 2024 and how they actually work in practice.
The SSA measures work activity using a standard called Substantial Gainful Activity, or SGA. If your earnings from work exceed the SGA threshold, the SSA may consider you capable of working — which can affect your eligibility for benefits.
2024 SGA Thresholds:
| Category | Monthly Earnings Limit (2024) |
|---|---|
| Non-blind SSDI recipients | $1,550/month |
| Blind SSDI recipients | $2,590/month |
These figures adjust annually with wage inflation, so the numbers for 2025 and beyond will likely be different. The blind threshold is higher because Congress specifically set it that way under the Social Security Act.
Important: SGA applies to earned income from work — wages and self-employment. It does not count investment income, rental income, or other unearned sources the same way.
Gross wages don't tell the whole story. The SSA may allow certain deductions before comparing your earnings to the SGA limit. These are called Impairment-Related Work Expenses (IRWEs) — costs you pay out of pocket for items or services that allow you to work, directly related to your disability.
Examples include:
If your gross pay exceeds $1,550 but you spend $300/month on disability-related work expenses, the SSA may calculate your countable earnings as $1,250 — below the SGA line.
This is one reason why two people with identical paychecks can have very different outcomes under SSDI rules.
SSDI includes a built-in safety valve called the Trial Work Period (TWP). During this window, you can test your ability to work without immediately losing benefits — regardless of how much you earn.
2024 Trial Work Period threshold: Any month in which you earn more than $1,110 counts as a trial work month.
You're entitled to 9 trial work months within any rolling 60-month window. During those 9 months, the SSA generally continues your full benefit even if your earnings exceed SGA.
Once you've used all 9 trial work months, the SSA evaluates whether you're engaging in SGA. That's when the income limits in the chart above become directly relevant.
After your Trial Work Period ends, you enter a 36-month Extended Period of Eligibility (EPE). During this window:
This is the "safety net within the safety net." It gives beneficiaries flexibility without forcing them to re-navigate the full application process every time their income fluctuates.
These two programs are often confused, but their income rules work very differently.
| Feature | SSDI | SSI |
|---|---|---|
| Income limit standard | SGA threshold | Strict income + asset limits |
| 2024 monthly income limit | $1,550 (non-blind) | ~$943/month (federal benefit rate) |
| Earned income treatment | SGA-based | Dollar-for-dollar reduction with exclusions |
| Asset limit | None | $2,000 individual / $3,000 couple |
| Eligibility basis | Work history / credits | Financial need |
If you're on SSI rather than SSDI, the income chart looks entirely different. SSI uses a formula that reduces your benefit based on what you earn, rather than cutting it off at a single threshold.
Some people receive both programs simultaneously — called concurrent benefits — in which case both sets of rules apply at once.
For SGA purposes, the SSA is primarily focused on earned income — money from working. But "working" includes more than a W-2 job. Self-employment income is also subject to SGA analysis, though the SSA applies a different calculation that looks at both net earnings and the value of your work activity.
Unearned income — Social Security retirement benefits, pension payments, dividends — generally does not count toward SGA for SSDI. This is different from SSI, where most income sources affect your benefit.
The chart above gives you the landscape. What it can't tell you is where you personally land within it. Several variables affect that:
Someone earning $1,600/month with $200 in documented IRWEs may remain under SGA. Someone earning $1,400/month in self-employment may face a more complex analysis. Someone in their Trial Work Period may have no immediate risk at all at $2,000/month.
The 2024 income limits chart gives you the rules of the game. How those rules apply to your specific earnings, benefit status, and documented expenses is a different question entirely — one that depends on details the chart itself can't capture.