Obamacare and Medicare are two separate programs with different rules and who they serve

Obamacare (the Affordable Care Act, or ACA) and Medicare are not the same thing. Medicare is a federal health insurance program for people 65 and older, regardless of income. Obamacare is a law that created new health insurance options for people under 65 who do not have coverage through an employer or another program. If you are on Medicare, you do not use Obamacare marketplaces to buy insurance — Medicare is your coverage.

The confusion happens because both programs expanded health insurance access and both involve the federal government. But they work in completely different ways, cover different groups of people, and have different costs and rules.

Key Takeaways

  • Medicare is for people 65 and older; Obamacare is for people under 65 without employer coverage.
  • Medicare is a single federal program you enroll in once; Obamacare offers multiple private insurance plans you choose from each year.
  • If you are on Medicare, you do not shop on the Obamacare marketplace — you stay with Medicare.
  • Some people may have access to for both programs at the same time, but they use Medicare as their primary insurance.

Who Medicare covers versus who Obamacare covers

Medicare covers people 65 and older, some younger people with disabilities, and people with end-stage renal disease. You do not have to be poor or have a low income to get Medicare — if you are 65, you are may be able to access. You also do not have to be a U.S. citizen, but you must have lived in the United States for at least five years.

Obamacare covers people under 65 who do not have health insurance through an employer, a union, Medicare, Medicaid, the Veterans Administration, or other government programs. Income matters for Obamacare — the lower your income, the more financial help you may receive to pay premiums and out-of-pocket costs. There is no income limit to buy Obamacare insurance, but people with higher incomes receive less help or none at all.

How the two programs work differently

Medicare is one program run by the federal government. When you turn 65, you enroll in Medicare Part A (hospital insurance) and Part B (doctor visits and outpatient care). You can also add Part D (prescription drug coverage) and choose a supplemental policy or a Medicare Advantage plan. Once you enroll, your coverage continues year to year unless you make changes during the annual enrollment period.

Obamacare is not a single insurance plan. Instead, it is a law that created a marketplace where private insurance companies sell plans. Every year during open enrollment (usually November through January), people under 65 choose which plan to buy. Plans vary in price, deductible, and which doctors and hospitals they cover. The plans are grouped into four metal levels — Bronze, Silver, Gold, and Platinum — based on how much the insurance company pays versus how much you pay.

Cost differences between Medicare and Obamacare

Medicare has a monthly premium for Part B (currently $164.90 per month for most people in 2024, though this changes yearly). You also pay a deductible when you use hospital or doctor services, and you pay copayments or coinsurance for most care. Many people on Medicare buy a supplemental policy to cover costs Medicare does not pay, which adds another monthly premium.

Obamacare plans have monthly premiums that vary widely depending on which plan you choose, your age, where you live, and your income. People with lower incomes receive tax credits that reduce the monthly premium. Obamacare plans also have deductibles, copayments, and out-of-pocket limits. The Bronze plans have lower premiums but higher deductibles; the Platinum plans have higher premiums but lower deductibles.

Neither program is "free," but both are designed to make health insurance more affordable than buying it on your own without any help.

What happens if you are under 65 and not yet on Medicare

If you are under 65 and do not have health insurance through work or another source, you can shop for Obamacare plans during open enrollment. You can also shop outside open enrollment if you have a may have access to life event — such as losing a job, getting married, having a baby, or moving to a new state. Each state runs its own marketplace or uses the federal marketplace at Healthcare.gov.

You will need to provide information about your household income, family size, and current coverage to see what plans are available and how much financial help you may have access to for. The marketplace will show you plans side by side so you can compare premiums, deductibles, and which doctors are in each plan's network.

What happens when you turn 65 and move from Obamacare to Medicare

When you turn 65, you stop using Obamacare and enroll in Medicare instead. You have a seven-month window to enroll — three months before the month you turn 65, the month you turn 65, and three months after. If you miss this window and do not have other may have access to coverage, you may pay a permanent penalty on your Medicare premiums.

Before you turn 65, you should contact Social Security or visit Medicare.gov to understand your enrollment options. You will need to decide whether to take Original Medicare (Parts A and B) plus a supplemental policy and Part D, or whether to choose a Medicare Advantage plan. This choice affects your costs and which doctors you can see, so it is worth understanding before you enroll.

People who have both Medicare and Medicaid at the same time

Some people may have access to for both Medicare and Medicaid. This happens when someone is 65 or older (or qualifies for Medicare for another reason) and also has a low enough income to may have access to for Medicaid in their state. These people are called "dual may be able to access." They use Medicare as their primary insurance and Medicaid as a secondary payer that helps cover costs Medicare does not pay.

Dual may be able to access people do not use the Obamacare marketplace. They are already covered by Medicare and Medicaid. Some states offer special Medicare Advantage plans designed for dual may be able to access people, which may include extra benefits like dental or vision coverage that regular Medicare does not provide.

Frequently Asked Questions

If I am on Medicare, do I need to do anything with Obamacare?

No. Once you are on Medicare, you do not use the Obamacare marketplace. Your Medicare coverage is separate. You do not need to enroll in an Obamacare plan, and you should not try to — Medicare is your health insurance.

Can I use my Obamacare plan after I turn 65?

No. Your Obamacare plan ends when you turn 65 and enroll in Medicare. You must enroll in Medicare during your seven-month enrollment window. If you do not enroll on time, you may face a permanent penalty on your Medicare premiums.

What if I cannot afford Medicare premiums?

If your income is low, you may may have access to for Medicaid, which can help pay your Medicare premiums and out-of-pocket costs. Contact your state Medicaid office or your local Area Agency on Aging to learn whether you may have access to. You can also ask about programs that help pay premiums for people on Medicare with limited income.

Is Obamacare insurance the same quality as Medicare?

Both are regulated health insurance, but they work differently. Obamacare plans are private insurance sold through a marketplace. Medicare is a federal program. The quality of care depends on which specific plan you choose and which doctors and hospitals are in that plan's network, not on whether it is Obamacare or Medicare.

Can I switch from Medicare back to Obamacare if I do not like Medicare?

Once you enroll in Medicare at 65, you cannot switch to Obamacare. Medicare is your coverage for life. You can change which Medicare plan you have (switching between Original Medicare and Medicare Advantage, for example), but you stay within the Medicare system.