Obamacare and Medicaid are not the same thing. Obamacare is the common name for the Affordable Care Act (ACA), a federal law passed in 2010 that reshaped health insurance across the country. Medicaid is a government health insurance program for people with low incomes that has existed since 1965. The confusion makes sense, though, because one of the biggest things Obamacare did was expand Medicaid to cover millions more people.
What Obamacare Actually Is
The Affordable Care Act is a law, not an insurance plan. It created a set of rules and programs designed to get more Americans insured. Its major pieces include the health insurance marketplace (where you shop for private plans), financial assistance to help pay premiums, protections like banning insurers from denying coverage for preexisting conditions, caps on annual out-of-pocket costs, and the expansion of Medicaid eligibility.
When people say they “have Obamacare,” they usually mean they bought a private insurance plan through the marketplace at HealthCare.gov or their state’s exchange. These plans are sold by private insurance companies and must cover ten categories of essential health benefits: emergency services, hospitalization, maternity care, mental health and substance use treatment, prescription drugs, lab work, preventive care, rehabilitative services, pediatric services (including dental and vision for children), and outpatient care.
What Medicaid Actually Is
Medicaid is a joint federal and state insurance program that provides health coverage directly to eligible people at little or no cost. It has been around for decades, long before the ACA. Each state runs its own Medicaid program under federal guidelines, which means eligibility rules, covered services, and even the program’s name can vary from state to state.
Traditionally, Medicaid covered specific categories of people: low-income children, pregnant women, parents of dependent children, people with disabilities, and adults over 65. In many states, being low-income alone wasn’t enough. You also had to fit into one of those groups. Some people, like children in foster care or recipients of Supplemental Security Income (SSI), qualify automatically.
How Obamacare Changed Medicaid
This is where the two concepts overlap and where most of the confusion starts. The ACA originally required every state to expand Medicaid to cover all adults under 65 with household incomes up to 138% of the federal poverty level, regardless of whether they were parents, had disabilities, or fit any traditional category. For a single person, that threshold works out to roughly $20,000 a year.
A 2012 Supreme Court ruling made expansion optional for states rather than mandatory. As of now, 41 states (including Washington, D.C.) have adopted the expansion, and 10 have not. In states that haven’t expanded, many low-income adults still fall into a coverage gap: they earn too much for traditional Medicaid but too little to qualify for marketplace subsidies.
To encourage states to expand, the federal government picks up a much larger share of the cost for newly eligible adults than it does for traditional Medicaid enrollees. The federal government covered 100% of expansion costs from 2014 through 2016, and that share has phased down to 90%, where it remains today. For traditional Medicaid populations, the federal share varies by state but is typically between 50% and 77%.
Costs for You Under Each Program
The cost difference between a marketplace plan and Medicaid is significant. If you enroll through the marketplace, you pay a monthly premium for a private insurance plan. Financial help is available in the form of premium tax credits if your income falls within the eligible range. You’ll also have deductibles, copays, and coinsurance depending on the plan you choose.
Medicaid, by contrast, is free or nearly free. States can charge small copays, but these are limited to nominal amounts for people with incomes at or below 150% of the federal poverty level. There are no monthly premiums for most enrollees and no deductibles in the traditional sense. For prescriptions, copays for non-preferred drugs can go up to 20% of the drug’s cost for people with somewhat higher incomes, but costs are capped overall.
How Enrollment Works
The timing rules are completely different. Marketplace plans follow an annual open enrollment period, typically running from November 1 through January 15. Outside that window, you can only sign up if you experience a qualifying life event like losing other coverage, getting married, or having a baby.
Medicaid has no enrollment period. You can apply any time of year. If you qualify, coverage can sometimes be applied retroactively to cover medical bills from the months before you applied.
How to Tell Which One You Qualify For
When you apply through HealthCare.gov or your state’s marketplace, the system checks your income and household size and routes you to the right program. You don’t need to apply separately. If your income is below 138% of the federal poverty level and you live in an expansion state, you’ll typically be directed to Medicaid. If your income is higher, you’ll see marketplace plans with any subsidies you qualify for.
In states that haven’t expanded Medicaid, the traditional eligibility categories still apply. A single adult without children or a disability may not qualify for Medicaid regardless of how low their income is. This is the coverage gap that affects an estimated several million Americans.
Key Differences at a Glance
- What it is: Obamacare is a federal law; Medicaid is a health insurance program.
- Who runs it: Marketplace plans are sold by private insurers on federal or state exchanges. Medicaid is administered by each state under federal rules.
- Cost to you: Marketplace plans involve premiums, deductibles, and copays (with possible subsidies). Medicaid is free or close to it.
- Enrollment timing: Marketplace plans require enrollment during open enrollment or a special enrollment period. Medicaid accepts applications year-round.
- Income thresholds: Marketplace subsidies are available for people earning above 100% of the federal poverty level. Medicaid covers people at or below 138% of the poverty level in expansion states, with more restrictive rules elsewhere.
The simplest way to think about it: Obamacare is the law that created the marketplace and expanded Medicaid. Medicaid is one of several programs that exist under that law’s umbrella. They work together, but they are not the same thing.