The two tests
Recent work. Credits are earned by paying Social Security tax on wages or self-employment income. Four credits is a full year. The recency rule is what disqualifies many applicants who worked for decades but stopped several years before becoming disabled.
Medical definition. SSA defines disability more strictly than other programs: the condition must prevent substantial work for at least 12 months or be expected to result in death. Partial or short-term disability does not qualify.
What the SGA limit does
Substantial gainful activity is a monthly earnings threshold. Earnings above it generally mean you are not considered disabled for benefit purposes, regardless of your condition. The 2027 figures are $1,770 for non-blind recipients and $2,950 for blind recipients.
The limit applies to gross earnings from work, not to investment income or a spouse’s income.
What happens after approval
Benefits begin after a five-month waiting period, and Medicare eligibility typically starts 24 months after entitlement. The annual COLA applies automatically: the 2027 increase is 3.6%, the same as for retirement benefits.
Where people go wrong
- Assuming a doctor’s note is enough. SSA evaluates functional capacity against a defined grid.
- Applying after several years out of the workforce, when the recency requirement is no longer met.
- Continuing to earn above the SGA limit while claiming inability to work.
If the work credits are not there, SSI is the separate needs-based program to check instead.