Status of State Medicaid Expansion Decisions – Image for illustrative purposes only (Image credits: Pexels)
Forty states plus the District of Columbia have embraced Medicaid expansion under the Affordable Care Act, extending coverage to roughly 20.4 million low-income adults as of mid-2025.[1][2] This provision targets individuals with incomes up to 138% of the federal poverty level, about $21,000 for a single person in 2025. Yet ten states remain outside the fold, creating a coverage gap that affects nearly 1.4 million uninsured people who earn too little for marketplace subsidies but do not qualify for traditional Medicaid.[1]
Unpacking the ACA’s Medicaid Provision
The Affordable Care Act, enacted in 2010, sought to broaden Medicaid eligibility to nearly all adults below 138% of the federal poverty level. A 2012 Supreme Court decision made participation optional for states, sparking a patchwork of decisions that continues today. Participating states receive an enhanced federal matching rate, starting at 90% for expansion populations.
Over the years, expansion delivered substantial gains in coverage. Total Medicaid and CHIP enrollment swelled by more than 19 million people from late 2013 to December 2025, even amid post-pandemic eligibility redeterminations that trimmed rolls.[1] Voter initiatives proved pivotal in several cases, driving adoption through ballot measures in places like Maine, Utah, Idaho, Nebraska, Oklahoma, Missouri, and South Dakota.
Expansion Across the Map: A Regional Breakdown
Western states lead with 12 adopters, including Alaska, Arizona, California, and recent entrants like Montana and Utah. The Midwest follows closely with 10 states such as Illinois, Michigan, and South Dakota. Southern adoption lags, though 10 states plus D.C. now participate, highlighted by North Carolina’s rollout in December 2023.[2]
The Northeast stands nearly unified at nine states, from Connecticut to Vermont. No new expansions occurred in 2024 or 2025, stalling momentum after North Carolina became the 40th state to join.[1] Enrollment in Virginia’s program, effective since 2019, exceeded 613,000 by mid-2025, while North Carolina quickly reached nearly 693,000.
The Holdouts: 10 States Defy the Trend
Ten states have not fully adopted expansion, though Georgia and Wisconsin offer limited alternatives. Georgia’s “Pathways to Coverage” program, launched in 2023 with work requirements, enrolled only about 15,000 by early 2026 – far short of the 450,000 eligible under full expansion. Wisconsin covers adults up to 100% of the poverty level without claiming enhanced federal funds for the full 138% threshold.[1]
| State | Status | Key Notes |
|---|---|---|
| Alabama | Non-Expansion | No major legislative progress in 2026. |
| Florida | Non-Expansion | Ballot initiative relaunched for 2028 vote. |
| Georgia | Partial Expansion | Work-required program; low enrollment. |
| Kansas | Non-Expansion | HB 2600 proposes 2027 start, pending. |
| Mississippi | Non-Expansion | HB 114 with work requirements debated. |
| South Carolina | Non-Expansion | Steady opposition. |
| Tennessee | Non-Expansion | Block grant waiver alternative; no childless adult gap. |
| Texas | Non-Expansion | Largest share of coverage gap. |
| Wisconsin | Partial Coverage | Up to 100% FPL, no enhanced funding. |
| Wyoming | Non-Expansion | Legislative resistance persists. |
Consequences: Higher Uninsured Rates and a Stubborn Gap
Non-expansion states face stark disparities. Uninsured rates for adults under 65 reached 15.5% there in 2023, nearly double the 8.9% in expansion states. Three-quarters of the 1.4 million in the coverage gap live in Texas, Florida, and Georgia alone.[1]
Thirteen states enacted trigger laws to potentially unwind expansion if federal funding dips below 90%. Post-unwinding, expansion enrollment dropped from 24.8 million in 2023 to 20.4 million by June 2025, underscoring ongoing challenges.
Looking Ahead: Work Rules and Political Battles
Federal work requirements arrive in 2027 for expansion enrollees – 80 hours monthly of work, school, or volunteering, with exemptions and semiannual checks. Nebraska starts early on May 1, 2026. Georgia’s partial program already mandates similar rules, limiting uptake.[2]
In Florida, advocates relaunched a ballot push for 2028. Bills in Kansas and Mississippi signal potential movement, though full adoption remains uncertain. For now, the map underscores a divided nation on health coverage, with implications for millions hanging in the balance.
As states navigate fiscal pressures and policy shifts, the expansion’s legacy endures in broader access for the working poor – yet the final contours depend on choices yet to come.
