How SSDI Work Credits and SSI Resource Limits Differ for Arizona Disability Applicants

Phoenix, United States – May 23, 2026 / Pekas Smith: Arizona Disability Attorneys /

PHOENIX, AZ. Social Security Disability Insurance (SSDI) and Supplemental Security Income (SSI) are two federal programs that share a common purpose but differ significantly in how they determine eligibility, calculate benefits, and structure funding. Each year, the overlap in their names contributes to a notable number of incomplete or misdirected applications. Pekas Smith, an Arizona disability law firm, has released a side-by-side breakdown of the two programs to help claimants in the state better understand their options.

SSDI functions as an insurance program, drawing its funding from payroll taxes paid over a worker’s career. Applicants must have accumulated enough work credits to qualify – typically 40 credits, with at least 20 earned during the 10 years prior to the onset of disability. Younger applicants may be eligible with fewer credits. Benefit amounts under SSDI are calculated based on the applicant’s lifetime earnings record and are not reduced by household income or personal assets. Those approved for SSDI become eligible for Medicare coverage after a 24-month waiting period measured from the established disability onset date.

SSI, by contrast, is a needs-based program funded through general tax revenues rather than payroll contributions. Work history is not a factor in determining eligibility, but applicants must fall within strict income and resource limits. Countable resources generally cannot exceed $2,000 for an individual or $3,000 for a couple. The federal benefit rate is set by statute and adjusted annually for cost of living. In Arizona, individuals approved for SSI are typically eligible for coverage through the Arizona Health Care Cost Containment System (AHCCCS), the state’s Medicaid program, with no waiting period required following approval.

Certain applicants may qualify for both programs at the same time – a situation referred to as concurrent benefits. This occurs when an applicant’s SSDI payment falls below the SSI income threshold. The Social Security Administration evaluates both programs through a single application, though the medical and non-medical criteria for each are assessed independently.

“Applicants sometimes apply for the wrong program, or assume they only qualify for one when they qualify for both. The distinction matters at the application stage because the documentation requirements differ. SSDI relies heavily on the earnings record, while SSI requires a detailed accounting of household income, assets, and living arrangements. Getting the right program identified upfront avoids unnecessary delay.” Jeremy D. Pekas, Founding Partner at Pekas Smith

Both programs apply the same medical definition of disability and follow the SSA’s five-step sequential evaluation process. The primary differences between SSDI and SSI lie on the non-medical side of the review. SSDI is an earned benefit connected to an applicant’s work history, while SSI is a means-tested benefit tied to current financial circumstances.

A detailed explanation of Supplemental Security Income in Arizona, including resource limits and the AHCCCS coverage that follows approval, is available on the firm’s website. Information on SSDI work credit requirements and Arizona eligibility rules is published separately, along with additional educational articles on the firm’s blog and general firm information.

About Pekas Smith

Pekas Smith is an Arizona disability law firm representing claimants in Social Security Disability Insurance (SSDI), Supplemental Security Income (SSI), and disability appeals matters. Founded by Jeremy D. Pekas and Tye Smith, the firm works with claimants at every stage of the SSA process, from initial application through federal court review.