Medicaid basics: who qualifies and what it covers

Medicaid is the largest health insurer in the United States, covering roughly one in five Americans — and a lot of people who qualify never apply because they assume it's only for people with no income at all. In reality, a job loss, a new baby, a disability, or simply a modest income can open the door to comprehensive coverage with little or no premium and tiny copays. Knowing the basics is worth real money, especially in the years when money is tightest.

What Medicaid is (and isn't)

Medicaid is joint federal-state health coverage for people with limited income. It's administered by each state, so names, rules, and generosity vary — but every state's program covers a comprehensive set of benefits: doctor visits, hospital care, prescriptions, labs, maternity and newborn care, mental health, and more, typically with $0 premiums and copays of $0–$8. It is not Medicare (that's the age-65+ program), though some low-income seniors qualify for both.

The income rules and the expansion divide

In states that expanded Medicaid under the ACA, adults generally qualify with household income up to 138% of the federal poverty level — roughly $21,000 for a single person or $36,000 for a family of four in the mid-2020s (figures update yearly). In the handful of states that did NOT expand, non-disabled adults without children often can't qualify at any income, creating a 'coverage gap.' Children, pregnant people, seniors, and people with disabilities have their own — usually more generous — pathways in every state.

Life events that commonly open the door

• Pregnancy: every state raises income limits for pregnant applicants, often well above the standard adult threshold — pregnancy Medicaid covers prenatal care, delivery, and postpartum.
• A new baby: infants and children qualify at higher income limits than adults, frequently through CHIP if income is too high for Medicaid.
• Job loss or income drop: current-month income rules mean eligibility can start right away.
• Disability or a serious diagnosis: separate pathways (including for people also on Medicare) with different, often higher, limits.
• Aging and long-term care: Medicaid is the largest payer of nursing home care, with its own income and asset rules.

How Medicaid compares to a subsidized marketplace plan

The bottom line

Medicaid is comprehensive, nearly free coverage that far more people qualify for than realize — especially during pregnancy, after a job loss, or on a modest income in an expansion state. It uses current income, enrolls year-round, and one marketplace application screens you for it automatically. If money is tight or your situation just changed, apply before assuming you earn too much; the worst outcome is a 'no' that costs you nothing.