SSI vs SSDI Arkansas: Key Differences for Disabled Adults

The Fundamental Difference

SSI (Supplemental Security Income) and SSDI (Social Security Disability Insurance) are both administered by the Social Security Administration. They both require a qualifying disability. But they are funded differently, have different eligibility rules, and connect to different health insurance programs.

SSI is a needs-based program. Eligibility depends on having limited income and resources (under $2,000 in countable assets). It is funded from general tax revenue, not Social Security payroll taxes. The maximum federal benefit rate for an individual is $994/month in 2026.

SSDI is an insurance program. Eligibility depends on the individual having paid enough Social Security payroll taxes through employment or, for DAC, on a qualifying parent's earnings record. There is no asset limit. Monthly payment amounts vary based on the worker's earnings history.

For most young adults with disabilities in Arkansas, the initial benefit at age 18 is SSI — because they have no work history of their own. SSDI enters the picture later, through the Disabled Adult Child (DAC) pathway.

Eligibility Side by Side

How the DAC Pathway Works

Most adults with developmental disabilities do not qualify for SSDI on their own work record because they have little or no employment history. The Disabled Adult Child (DAC) benefit is the bridge.

When a qualifying parent retires, becomes disabled, or dies, their adult child with a disability can receive benefits on the parent's Social Security record. The DAC benefit is calculated as a percentage of the parent's earnings:

• 50% of the parent's Primary Insurance Amount if the parent is living
• 75% if the parent is deceased

For many families, this means the adult child transitions from SSI ($994/month maximum) to a DAC benefit that could be $1,200 to $1,800/month or more, depending on the parent's earnings history.

What Happens to Medicaid When SSI Ends

This is the transition that creates the most anxiety. SSI connects to Medicaid automatically in Arkansas. SSDI/DAC connects to Medicare — but only after a 24-month waiting period. So there is a potential gap where the individual has SSDI income but neither Medicaid nor Medicare.

Arkansas provides two protections:

1. Section 1634(c): If SSI ends solely because of the DAC benefit, Medicaid can continue. Contact the local DHS office promptly, submit the DAC award letter and historical SSI records within 30 days of SSI termination, and ask DHS to apply this protection.
2. Section 1619(b): If SSI ends because of earned income from employment (not DAC), Medicaid continues as long as the individual still needs it and meets the 1619(b) conditions.

These protections have different eligibility rules. Follow SSA and DHS notices and keep records of any request or referral.

Can Someone Receive Both?

Yes, in some situations. If the DAC benefit amount is below the SSI threshold, the individual can receive both — a reduced SSI payment after applicable income exclusions, plus the DAC benefit. Medicaid can continue under applicable rules, and Medicare begins after the Medicare waiting period.

This concurrent-benefit situation often occurs when the parent had a modest earnings record. The DAC benefit might be $500/month, and SSI may supplement it after applicable exclusions; both health programs can eventually apply.

The Arkansas SSI at 18 & Adult Disability Benefits Guide includes a benefit comparison worksheet for calculating exactly how SSI, DAC, Medicaid, and Medicare interact based on the parent's earnings record and the individual's current income.

See more Arkansas guides →