Guide
SSDI vs SSI: Key Differences
Social Security runs two disability programs. They share a medical standard but the rules for who can collect — and how much — are very different.
At a glance
| SSDI | SSI | |
|---|---|---|
| Who qualifies | Workers with enough work credits | Disabled people with low income/resources |
| Funded by | FICA payroll taxes | General tax revenue |
| 2026 max benefit | ~$4,018/mo | $967/mo (individual) |
| Health coverage | Medicare (after 24 months) | Medicaid (usually immediately) |
| Back pay reaches | Up to 12 months before filing | From application date forward |
SSDI (Social Security Disability Insurance)
SSDI is an earned benefit. You qualify by working long enough — generally 20 of the last 40 quarters — and paying Social Security taxes. Your monthly payment is based on your lifetime earnings.
SSI (Supplemental Security Income)
SSI is a needs-based program for disabled adults and children with very limited income and resources (generally under $2,000 for an individual). You don't need a work history to qualify.
Can you receive both?
Yes — many claimants qualify for "concurrent" benefits, especially when their SSDI payment is low. We'll evaluate both programs in your free case review.