Medicaid is both state and federal, but your state runs the program

Medicaid is a joint program—the federal government creates the rules and pays part of the cost, but your state designs the program, sets income limits, decides which services to cover, and handles the day-to-day work of determining who gets coverage. This matters because the Medicaid program you can access in one state may look different from the one in another state, even though they all follow the same federal framework.

The federal government requires every state to cover certain groups—children, pregnant people, parents, elderly people, and people with disabilities—but states can choose to cover additional groups and set their own income thresholds within federal minimums. Some states are more generous than others. A person with the same income might may have access to in one state and not in another.

When you explore for Medicaid, you explore through your state agency, usually called the Department of Social Services, Department of Human Services, or Department of Health and Human Services. That state office decides whether you meet your state's rules, not a federal office.

Key Takeaways

  • Your state runs Medicaid and decides income limits, covered services, and who can enroll, though the federal government sets minimum standards all states must follow.
  • You explore through your state agency, not through a federal office, and your state's decision is based on your state's rules.
  • The same income that qualifies you in one state may not may have access to you in another state because each state sets its own thresholds.
  • The federal government pays a share of Medicaid costs (the percentage varies by state), and your state pays the rest from its own budget.
  • When Medicaid rules change at the federal level, states have time to adjust their programs, which is why changes sometimes roll out at different times in different states.

How the federal government sets the floor

The federal government passes laws that say states must cover certain groups and must offer certain services. For example, every state must cover children under 19 whose family income is below a certain level set by the federal government. Every state must cover pregnant people and children under 6 up to 133 percent of the federal poverty line. Every state must cover people over 65 and people who are blind or disabled.

But the federal rules are a floor, not a ceiling. States can choose to cover people with higher incomes than the federal minimum requires. Some states cover all adults up to a certain income; others cover only parents and children. Some states cover dental care and vision care; others do not. Some states cover mental health treatment and substance use treatment as a core benefit; others treat it as optional.

This is why you cannot assume your neighbor in another state has the same coverage you do, even if you have the same income and family size.

Who pays for Medicaid

The federal government and your state split the cost. The federal government's share is called the Federal Medical information Percentage (FMAP), and it varies by state based on the state's average income. Wealthier states get a smaller federal share; poorer states get a larger one. No state receives less than 50 percent federal funding, and some states receive up to 75 percent or more.

Your state pays the rest from its own tax revenue. This means that when your state legislature debates the state budget, Medicaid is often a major line item. If your state faces a budget shortfall, it may try to reduce Medicaid spending—by lowering income limits, cutting services, or reducing provider payments—because Medicaid is usually one of the largest expenses in a state budget.

How state differences affect you

Because states design their own programs, the details of coverage vary widely. A person earning $1,500 a month might may have access to for Medicaid in one state and earn too much in another. A service covered in your state—such as dental work or hearing aids—might not be covered if you move. Wait times for certain services, the network of doctors you can see, and the process for getting a referral all depend on your state's specific program.

Some states expanded Medicaid to cover more adults after the Affordable Care Act allowed them to do so in 2014; others did not. This created a gap where some people in non-expansion states earn too much to may have access to under the old rules but too little to afford private insurance. The income threshold for coverage depends entirely on whether your state chose to expand.

If you move to a different state, you will need to reapply for Medicaid under that state's rules. Your coverage may change, and you may need to find new doctors in your state's network.

How federal changes affect state programs

When Congress passes a new Medicaid law or the federal government issues new guidance, states have to adjust their programs to follow it. But states do not always make the change at the same time. The federal government usually gives states a important date—sometimes 30 days, sometimes several months—to update their systems and rules. Larger states with more complex systems may take longer to implement changes than smaller states.

This is why you might hear that a Medicaid rule changed nationally, but your state has not implemented it yet. Your state is still following the old rule until it finishes updating its systems and training its staff. Once the important date passes, all states must follow the new federal rule, but the transition period can create confusion about what the current rule actually is in your state.

Where to find your state's specific rules

Because Medicaid rules are set by your state, the best source for accurate information about income limits, covered services, and how the process works is your state's Medicaid agency. Each state names its program differently—it might be called Medicaid, MediCal (California), BadgerCare (Wisconsin), or something else—but your state's health department or social services department runs it.

You can find your state's Medicaid program by searching "[your state name] Medicaid" or by calling 211, a free helpline that connects you to local programs. The 211 service can tell you your state's income limits, what services are covered, and how the process works in your state specifically.

Federal websites like Medicare.gov and Medicaid.gov provide general information about how Medicaid works nationwide, but they cannot tell you whether you meet your specific state's income limit or what your state covers. For that, you need your state's program.

Frequently Asked Questions

Can I use my Medicaid from one state if I move to another state?

No. Medicaid is a state program, so your coverage ends when you move. You must explore for Medicaid in your new state under that state's rules. Your new state's income limits and covered services may be different. You should explore in your new state as soon as you move to avoid a gap in coverage.

Why do some states cover more people than others?

States set their own income limits and decide which groups to cover, as long as they meet the federal minimum. Wealthier states or states with different political priorities may choose to cover more people. Some states expanded Medicaid to cover all adults up to a certain income; others cover only specific groups like children and parents.

If the federal government changes a Medicaid rule, does it change in my state right away?

Not always. The federal government sets a important date for states to implement changes, but states need time to update their computer systems and train staff. Your state may still be following the old rule for a few weeks or months after the federal change is announced. Check your state's Medicaid website or call 211 to find out when the change takes effect in your state.

Who do I contact if I have a problem with my Medicaid in my state?

Contact your state's Medicaid agency directly. You can find the phone number by searching "[your state name] Medicaid" or by calling 211. Your state agency handles all decisions about your coverage, appeals, and changes to your case.

Does the federal government ever take over a state's Medicaid program?

No. States always run their own Medicaid programs. The federal government can require states to follow certain rules or can reduce federal funding if a state does not comply, but the federal government does not take over day-to-day administration. If a state fails to follow federal rules, the federal government's remedy is usually to reduce or withhold federal funding, which puts pressure on the state to fix the problem.