The Basics of Social Security Disability Insurance (SSDI)

Takeaways

• Social Security Disability Insurance (SSDI) is an earned Social Security benefit for workers with a severe, long-term disability. You must have a sufficient work history and be unable to earn more than $1,690/month (in 2026). Disabled children under 22 may qualify through a parent's record.
• SSDI provides monthly payments based on past earnings and includes Medicare eligibility after a typical two-year wait. The Ticket to Work program offers a trial work period to test a return to work without immediate loss of benefits.

Social Security Disability Insurance (SSDI) is one of the major federal programs that provides monetary assistance to people with disabilities. Unlike with some other programs for people with disabilities, an SSDI applicant can qualify for benefits no matter how much money they have and, in many cases, no matter how much they earn. As of 2024, more than 7 million people across the U.S. were receiving SSDI benefits.

Although the lack of strict financial standards makes SSDI benefits easier to manage once they are obtained, not everyone with a disability can qualify for SSDI, so it pays to know the rules before filing an application for benefits.

Quarters + Disability = Benefits

SSDI is available to any worker who has a disability as defined by the federal government and who has paid into the Social Security system for a specified amount of time, depending on their age. To qualify as disabled, an SSDI applicant must show that they are almost completely unable to work any job.

The applicant must have a physical or mental impairment that makes it impossible for them to engage in any “substantial gainful activity (SGA).” Their impairment must be expected to last for longer than one year or result in death. If an applicant can engage in SGA, they will typically not be eligible for SSDI.

The Social Security Administration (SSA) generally defines SGA as being able to earn more than $1,690 a month (in 2026, for nonblind individuals) from working. (For blind individuals, it is $2,830 per month.)

This income restriction applies only to income earned by working. An applicant can receive any amount of unearned income from any source other than working and still qualify for SSDI. The SSDI benefit amount depends on the beneficiary’s income before they became disabled, the size of their family, and the amount they paid into the Social Security system.

Qualifying on a Parent’s Work Record

Most people whose disability began before age 22 may not have the necessary work record to qualify for SSDI on their own. However, they may qualify for benefits on a parent’s work record if:

• an applicant’s disability manifested itself before the applicant turned 22,
• the applicant is completely disabled,
• their parent paid into the Social Security system for the required number of quarters, and
• the parent is either dead, permanently disabled, or receiving Social Security retirement benefits.

In these cases, the person with the disability receives an SSDI benefit in addition to the Social Security benefits that their parent is collecting.

SSDI Recipients Get Medicare . . . Eventually

Although most people think of Medicare as health insurance for older Americans, SSDI recipients also qualify for Medicare benefits. Unfortunately, under current federal law almost all SSDI recipients must wait two years from the date that they become eligible for SSDI before they can begin to receive Medicare. (This restriction does not apply to people who have ALS or who require dialysis for end-stage renal disease.)

If a person with a disability is no longer working, it may be difficult or impossible for them to obtain health insurance during this waiting period, which could lead to life-threatening consequences. Although some SSDI recipients with low incomes may qualify for Medicaid, a large number of SSDI recipients go without health insurance during this waiting period. Over the years, Congress has attempted to rectify this problem, so far without success.

Restarting Work Does Not Immediately Cause a Loss of Benefits: Ticket to Work

Because SSDI applicants must not be able to engage in substantial gainful activity, many SSDI recipients may be reluctant to move back into the workforce for fear that they will immediately lose their SSDI benefit.

Fortunately, the SSA offers a program called Ticket to Work. It allows an SSDI recipient to begin working again without losing benefits. Under the program, when an SSDI recipient earns more than $1,210 a month (in 2026), they trigger the start of a trial work period, which lasts for five years. During this period, the SSDI recipient can earn more than $1,210 a month for eight more months (these months need not be consecutive).

Once the SSDI recipient has used up their nine total trial work months, they will not receive SSDI in any additional month during which they engage in SGA (i.e., when they make more than $1,690 a month).