What is Obamacare? Who qualifies and how to sign up
Obamacare is the Affordable Care Act. It is still the law, and you can still sign up. Here is who qualifies, how it works and what changed.

Last checked October 18, 2026 · Written by licensed advisors · Sources are numbered and listed under Notes and sources
What is Obamacare?
Obamacare is the nickname for the Affordable Care Act, or ACA. It is a federal law signed in 2010. People also use the word for the health plans sold under it.
Every Marketplace plan covers pre-existing conditions and the same core benefits. Many people also get a tax credit that lowers the monthly bill.1
- Obamacare: the nickname
- Affordable Care Act (ACA): the 2010 federal law
- The Marketplace: where you shop for plans
- HealthCare.gov or Get Covered Illinois: the websites
What is the health insurance Marketplace?
The Marketplace is the website where you compare and buy ACA plans. In most states it is HealthCare.gov. Illinois runs its own, called Get Covered Illinois.
You can shop there on your own. You can also have a licensed advisor do it with you, at no charge to you.2
Who qualifies for Obamacare?
You qualify if you live in the U.S., you are a citizen, national or lawfully present, you are not incarcerated, and you do not have Medicare.
A tax credit is separate. It is for household incomes from 100% to 400% of the poverty line. In states that expanded Medicaid, including Illinois, lower incomes usually go to Medicaid instead.
If you are not sure whether your immigration status counts, ask an immigration attorney or an accredited representative. We explain plans. We can’t advise on status.34
How do I sign up for Obamacare?
Apply on HealthCare.gov, or on Get Covered Illinois if you live in Illinois. Open enrollment on HealthCare.gov runs November 1 to January 15.
Choose a plan by December 15 for coverage that starts January 1. Plans chosen from December 16 to January 15 start February 1. State marketplaces set their own dates.
Outside open enrollment you need a qualifying life event, such as losing other coverage.56
- 1. GatherIncome and who is in your household
- 2. ApplyHealthCare.gov, or Get Covered Illinois in Illinois
- 3. ComparePlans, doctors and prescriptions
- 4. ChooseOn HealthCare.gov: by December 15 for January 1 (key step)
- 5. PayThe first premium starts your coverage
What to do: Call us before you apply. We check your income estimate, your doctors and your prescriptions first.
Is Obamacare ending?
No. The Affordable Care Act is still the law, and Marketplace plans are still sold for 2027.
What changed is the money. The extra tax credits ended after 2025. Above 4× the poverty line there is no tax credit. Starting with tax year 2026, there is no cap on paying back extra credit.
The most a plan can make you pay in 2027 is $12,000 for one person.789
- 2010The Affordable Care Act becomes law
- End of 2025The extra tax credits end
- 2026Tax credits stop above 4× the poverty line, and repayment has no cap
- 2027Plans are still sold on the Marketplace (key step)
What to do: Read what changed for 2027 and what to do about each change.
How much does Obamacare cost?
It depends on your income, age, county and plan. With a tax credit, you are expected to pay a set share of your income toward a benchmark silver plan. In 2027 that share runs from 2.15% to 10.22%.
The credit covers the rest. Above 4× the poverty line you pay the full price.7
What to do: See worked examples by income in the cost guide, or ask us for your own numbers. Example figures are not a quote.
Related guides
Obamacare Hotline and/or Medicare Po Polsku are private companies not affiliated with any local, state, or federal government agency. This guide is general information, not tax or legal advice.

