Income Effects
Supplemental Security Income (SSI):
Because SSI is a needs-based program, the amount of income a person receives directly impacts the benefit. SSI has strict rules about how income is counted, and not all income is treated the same way. For example, the first $20 of most income is excluded, and only about half of earned wages (after certain deductions) are counted when figuring out how much to reduce the monthly benefit. This means that individuals can often work part-time and still keep some or all of their SSI, though their benefit may decrease as their earnings increase. In addition to wages, other types of income—such as financial support from family members or free housing—can also affect SSI eligibility and payment amounts. Because of this, it’s important for recipients to regularly report income changes to the Social Security Administration to avoid overpayments or interruptions in benefits.
Social Security Disability Insurance (SSDI):
SSDI benefits, on the other hand, are not reduced based on unearned income, savings, or assets, since eligibility is tied to a person’s work history rather than financial need. However, earned income from working can affect SSDI. The Social Security Administration uses the concept of Substantial Gainful Activity (SGA) to determine whether someone is working too much to be considered disabled. In 2025, for example, earning over a set monthly limit ($1,550 for most people, higher for individuals who are blind) may put SSDI eligibility at risk. To encourage work attempts, SSA offers work incentives such as a Trial Work Period and Extended Period of Eligibility, which allow beneficiaries to test their ability to work without immediately losing their benefits. This structure provides a safety net, giving people a chance to return to work while still protecting their benefits until they are fully stable in employment.