Medicaid: 72 Million Enrollees, Federal Matching, and the 2026 Cut Battle
Medicaid is the largest health insurance program in the US by enrollment. It covers one in five Americans through a partnership between the nt-size:1rem;max-width:640px;margin:0 0 8px;"> Medicaid is the largest health insurance program in the US by enrollment. It covers one in five Americans through a partnership between the federal government and states. Understanding it is essential to understanding the Republican reconciliation fight — and the 2026 midterm stakes.
- Medicaid covers 72 million Americans — one in five — and is the largest health insurer in the US by enrollment, covering children, low-income adults, people with disabilities, and seniors in nursing homes
- It is jointly funded by federal and state governments: the federal match (FMAP) ranges from 50% for wealthier states to 83% for the poorest; ACA expansion population gets 90% federal match
- Republicans are pursuing $500B-$1T in Medicaid cuts through the 2026 reconciliation package — primarily via work requirements and per-capita caps — which CBO estimates would cause millions to lose coverage
- Arkansas implemented work requirements in 2018 — 18,000 lost coverage within months, mostly due to documentation failures, not because they weren't working; courts struck down the requirements
What Medicaid Covers and Who It Covers
Medicaid was created in 1965 alongside Medicare as part of Lyndon Johnson's Great Society. It is a joint federal-state program: the federal government sets minimum standards, funds a substantial share of costs, and states administer the program — with some flexibility to expand coverage or add services.
Who Medicaid covers: Low-income children (about 40% of all US children are on Medicaid or CHIP), pregnant women, parents of Medicaid-eligible children, people with disabilities (who account for a disproportionate share of costs), elderly nursing home residents (Medicaid pays roughly 60% of all US nursing home costs), and — in expansion states — low-income adults without children earning up to 138% of the federal poverty level.
Long-term care: Medicaid is the primary payer for long-term care in the US. Medicare covers only short-term skilled nursing care. When a senior's assets are exhausted paying for nursing home care, Medicaid takes over — a reality that affects middle-class families more than is widely understood. Roughly 6 in 10 nursing home residents are on Medicaid.
How the FMAP Matching System Works
| State Type | Example States | Federal Match (FMAP) | ACA Expansion Match |
|---|---|---|---|
| High-income | California, New York, Massachusetts | 50% | 90% |
| Median | Ohio, Pennsylvania, Michigan | ~64% | 90% |
| Low-income | Mississippi, West Virginia, Alabama | ~77-83% | 90% |
Note: ACA expansion population (adults 19-64 up to 138% FPL) always receives 90% federal match, regardless of state income level, to incentivize expansion adoption.
Why It Matters for 2026
Republican reconciliation proposals include per-capita caps (replacing open-ended federal matching with fixed amounts per enrollee), work requirements for ACA expansion adults, and reducing or eliminating the enhanced 90% match for the expansion population. CBO estimates these changes would cause 10-20 million people to lose Medicaid coverage over 10 years and reduce federal spending by $500B-$1T. States with large expansion populations would face immediate budget crises.
Democrats have made Medicaid cuts the primary 2026 campaign issue in competitive House and Senate districts. Polling shows Medicaid is more popular than the ACA as a brand — including in Republican-leaning districts. The specific combination of Medicaid cuts + tax cuts for high earners is an easy contrast message. Multiple Republican House members in swing districts have publicly stated they will not vote for Medicaid per-capita caps, creating an ongoing internal party standoff.
Medicaid expansion has been disproportionately adopted in rural areas and red states with high poverty rates. States like West Virginia, Montana, and Louisiana have significant Medicaid expansion populations. Rural hospitals, which operate on thin margins and rely heavily on Medicaid reimbursement, face closure risk under deep cuts — a concern that has made some Republican senators from rural states skeptical of the deepest cut proposals in the reconciliation bill.
Frequently Asked Questions
What is the difference between Medicaid and Medicare?
Medicare is a federal health insurance program for people 65 and older and certain disabled individuals, regardless of income. It is entirely federally funded. Medicaid is a joint federal-state program for low-income individuals of all ages — children, pregnant women, adults with disabilities, and low-income seniors. Many low-income seniors (called "dual eligibles") are enrolled in both. Medicare eligibility is based on age or disability; Medicaid eligibility is based on income.
What did the ACA do to Medicaid?
The ACA created a new Medicaid eligibility category: all adults under 65 with incomes up to 138% of the federal poverty level, regardless of whether they had children. The ACA originally required all states to expand; the Supreme Court ruled in 2012 (NFIB v. Sebelius) that states could not be coerced, making expansion optional. The federal government offered a 90% match rate to incentivize expansion. As of 2026, 40 states plus DC have expanded; 10 states (mostly in the South) have not, leaving millions in a "coverage gap" earning too much for traditional Medicaid but too little for ACA marketplace subsidies.
What are per-capita caps and how are they different from block grants?
Under per-capita caps, the federal government limits its contribution to a fixed amount per enrollee per year (with inflation adjustments), rather than the current open-ended matching system where the federal share grows automatically as enrollment and costs grow. Block grants give states a fixed total sum regardless of enrollment. Per-capita caps are more targeted (they scale with enrollment) but still limit federal exposure during economic downturns when Medicaid enrollment typically spikes. Critics argue both approaches shift recession-time costs to states, which have balanced budget requirements — meaning cuts during economic downturns are inevitable, precisely when coverage demand peaks.
