Understanding Key Questions About SSDI Benefits
Explore common questions about SSDI, including eligibility criteria, work credit requirements, qualifying medical conditions, application procedures, and benefit calculations. This comprehensive guide helps individuals understand the essentials of SSDI benefits and how to access them effectively.

Understanding Key Questions About SSDI Benefits
Understanding Key Questions About SSDI Benefits
Social Security provides financial support to individuals with limited or no income. Specifically, Social Security Disability Insurance (SSDI) assists workers who become unable to work due to illness or injury before reaching retirement age. This program is often called "worker disability."
Who qualifies for SSDI?
Eligible applicants include citizens and legal residents who can demonstrate to the Social Security Administration (SSA) that they have a disability preventing work for at least one year.
Additionally, applicants generally need to have a specific work history and have paid Social Security taxes, known as FICA. If they haven't worked long enough or have low income and resources, they might qualify for Supplemental Security Income (SSI), provided they have earned enough work credits.
How many work credits are needed for SSDI eligibility?
To qualify for SSDI, individuals must accumulate enough work credits, earning up to four annually. The number needed depends on their age at the time of disability. For example, at age 50, an individual needs approximately 28 credits or about seven years of work, with at least five of those in the last decade.
What medical conditions qualify for SSDI?
Applicants must have a medical condition meeting SSA’s criteria for disability—severe, long-lasting, and hindering basic work activities. The condition must be expected to last at least one year, and the individual must be unable to perform substantial gainful activity (SGA) for at least 12 months.
How can I apply for SSDI?
Applications can be submitted online, via phone, or in person at local SSA offices. Before applying, applicants should complete the SSA Disability Report for adults, providing details about health, employment history, and family circumstances.
How is SSDI benefit amount determined?
Monthly SSDI payments are calculated based on the individual's earnings history, adjusted for inflation, known as the average indexed monthly earnings (AIME). The Primary Insurance Amount (PIA) is derived from a percentage of the AIME at different thresholds, updated annually. Benefits may also consider family maximum limits, varying from 100% to 188% of the PIA depending on family circumstances.