Social Security Disability: SSDI and SSI
The Social Security Administration (SSA) operates two disability programs: Social Security Disability Insurance (SSDI) and Supplemental Security Income (SSI). Both provide monthly cash benefits to people with disabilities, but they have different eligibility requirements.
SSDI vs. SSI: Key Differences
SSDI (Social Security Disability Insurance)
Based on your work history and Social Security taxes paid
Requires sufficient "work credits" (typically 20 credits in the last 10 years)
Benefit amount depends on your lifetime earnings
Includes Medicare coverage after a 24-month waiting period
No asset or income limits
SSI (Supplemental Security Income)
Need-based program for disabled individuals with limited income and resources
No work history requirement
Federal benefit rate is approximately $943/month (2025), though many states supplement this
Resource limit of $2,000 for individuals, $3,000 for couples
Includes automatic Medicaid eligibility in most states
The Definition of Disability
The SSA uses a strict definition: you must be unable to engage in any "substantial gainful activity" (SGA) due to a medically determinable physical or mental impairment that:
Has lasted or is expected to last at least 12 months, or
Is expected to result in death
The current SGA amount is $1,550/month for non-blind individuals and $2,590/month for blind individuals (2025).
The Five-Step Evaluation Process
The SSA evaluates disability claims using a sequential five-step process:
Are you working? If you earn above the SGA level, you are generally not disabled
Is your condition severe? It must significantly limit your ability to perform basic work activities
Does your condition meet a listing? The SSA maintains a "Blue Book" of conditions that automatically qualify
Can you do your past work? If your condition prevents you from performing your previous job
Can you do any other work? Considering your age, education, skills, and residual functional capacity
How to Apply
Gather Your Documentation
Complete medical records from all treating providers
Lab results, imaging studies, and test results
Medications list with dosages and side effects
Work history for the past 15 years
Contact information for all doctors, hospitals, and clinics
Submit Your Application
Online at ssa.gov (recommended)
By phone at 1-800-772-1213
In person at your local Social Security office
The Timeline and Appeals Process
The initial application process typically takes 3-6 months. Approximately 65% of initial applications are denied. The appeals process has four levels:
Reconsideration (60 days to file): Your claim is reviewed by a new examiner
Hearing before an Administrative Law Judge (60 days to file): This is where most cases are won — approval rates are approximately 45-55%
Appeals Council Review (60 days to file): Reviews the ALJ's decision for legal errors
Federal Court Review: File a civil action in U.S. District Court
Tips for a Successful Claim
See your doctors regularly: Gaps in treatment undermine your claim
Be honest and thorough: Describe your worst days, not your best
Document functional limitations: How does your condition affect daily activities?
Follow prescribed treatment: Non-compliance can be used against you
Consider hiring a representative: Disability attorneys and representatives work on contingency (typically 25% of back benefits, capped at $7,200)
After Approval
SSDI has a 5-month waiting period before benefits begin
Back pay is available from the date of your application (SSDI) or filing date (SSI)
Your case will be reviewed periodically (every 1-7 years) to determine if you still qualify
You may be eligible for a trial work period to test your ability to work without losing benefits
Key Terms: Substantial Gainful Activity (SGA) — the earnings threshold for disability. Residual Functional Capacity (RFC) — what you can still do despite your limitations. Blue Book — SSA's listing of qualifying impairments. Consultative Examination (CE) — SSA-arranged medical exam.
Disclaimer: Social Security disability law is complex. Many applicants benefit from working with a disability attorney or accredited representative, especially at the hearing level.