A marketplace insurance plan is private health coverage you buy through the government-run Health Insurance Marketplace created by the Affordable Care Act. Every plan sold there has to cover a defined set of health services, cap your annual out-of-pocket spending, and follow ACA pricing rules. Many buyers also qualify for financial help that lowers monthly premiums, cost-sharing, or both. To enroll, you need to live in the United States, be a citizen or lawfully present immigrant, and not be incarcerated after a conviction.
Who Can Enroll
Three basic conditions decide whether you can buy a marketplace plan at all. You have to live in the U.S. You have to be a U.S. citizen, U.S. national, or lawfully present immigrant. And you can’t currently be incarcerated after a conviction.
Lawfully present immigrants include green card holders, refugees, asylees, people with valid work or student visas, and people with Temporary Protected Status, among other categories.1HealthCare.gov. Health Coverage for Lawfully Present Immigrants If you’ve been charged with a crime but not yet convicted, you’re still eligible.2Centers for Medicare & Medicaid Services. Incarcerated and Recently Released Consumers People on probation, parole, or home confinement after serving a sentence can also enroll.
Your job status doesn’t affect eligibility to buy a plan, but it can affect eligibility for the subsidies that make plans affordable. If your employer offers health insurance that meets the ACA’s minimum value standard and costs you less than 9.96% of your household income for self-only coverage in 2026, you won’t qualify for marketplace subsidies.3Internal Revenue Service. Updates to Questions and Answers About the Premium Tax Credit You can still buy through the marketplace, but at full price. If the job-based offer is unaffordable by that test, or doesn’t meet minimum value, you become eligible for financial help.4Internal Revenue Service. Minimum Value and Affordability
A few other lines matter. People enrolled in Medicare generally cannot buy a marketplace plan, and it’s illegal for anyone who knows you have Medicare to sell you one.5Medicare.gov. Medicare and the Marketplace If you qualify for Medicaid, you’d be covered there instead. And in states that didn’t expand Medicaid, people with income below 100% of the federal poverty level may still be able to shop on the marketplace, though subsidy eligibility depends on the specific situation.
What Every Marketplace Plan Has to Cover
Every plan sold through the marketplace, at any price, must cover ten categories of essential health benefits: outpatient care, emergency services, hospitalization, maternity and newborn care, mental health and substance use treatment, prescription drugs, rehabilitative services, lab tests, preventive care and chronic disease management, and pediatric services including dental and vision.6Centers for Medicare & Medicaid Services. Information on Essential Health Benefits Benchmark Plans No plan can impose annual or lifetime dollar limits on these services.
Your total out-of-pocket spending for the year is also capped. For 2026, the ceiling is $10,600 for an individual and $21,200 for a family, regardless of which plan you pick.7HealthCare.gov. Out-of-Pocket Maximum/Limit Once you hit that number in a plan year, the insurer pays 100% of covered in-network care for the rest of the year.
The Four Plan Tiers
Marketplace plans are sorted into four metal tiers based on how you and the insurer split average medical costs. The tier names describe cost-sharing, not the quality of doctors or hospitals in the network.8HealthCare.gov. Health Plan Categories: Bronze, Silver, Gold, and Platinum
- Bronze plans cover about 60% of costs. Lowest premium, highest deductibles and copays.
- Silver plans cover about 70%. Silver is the only tier eligible for cost-sharing reductions, which can push its coverage as high as 94% for lower-income enrollees.
- Gold plans cover about 80%. Higher premium, less out of pocket when you use care.
- Platinum plans cover about 90%. Highest premium, lowest out-of-pocket costs.
There is a fifth option, the catastrophic plan, available if you’re under 30 or qualify for a hardship or affordability exemption.9HealthCare.gov. Health Coverage Exemptions: Forms and How to Apply Catastrophic plans have very low premiums and a deductible equal to the annual out-of-pocket maximum ($10,600 for an individual in 2026). They aren’t eligible for premium tax credits.
Financial Help That Lowers What You Pay
Two separate forms of assistance can make marketplace coverage significantly cheaper. One lowers your monthly premium. The other lowers what you pay when you actually use care.
Premium Tax Credits
The premium tax credit reduces your monthly insurance payment. For the 2026 plan year, you qualify if your household income falls between 100% and 400% of the federal poverty level. For a single person, that’s roughly $15,960 to $63,840; for a family of four, about $33,000 to $132,000.10U.S. Department of Health and Human Services, Office of the Assistant Secretary for Planning and Evaluation. 2026 Poverty Guidelines Exceed 400% by a dollar and you lose the credit entirely, paying full price for your plan.11Internal Revenue Service. Eligibility for the Premium Tax Credit
This hard cutoff at 400% of the poverty level is sometimes called the subsidy cliff. From 2021 through 2025, temporary legislation eliminated the cliff and capped everyone’s required premium contribution at 8.5% of household income. That expansion expired at the end of 2025 and was not renewed by Congress, so the cliff returned for 2026. If you received a subsidy in recent years with income just above the old threshold, check your eligibility carefully before assuming it continues.
Most people take the credit in advance, so their monthly premium drops immediately. You can also pay full price each month and claim the whole credit on your tax return. The advance option is more common because it makes coverage affordable month to month, but if your actual annual income comes in higher than what you estimated, you may owe some of that credit back at tax time.
Cost-Sharing Reductions
Cost-sharing reductions lower what you pay when you actually get medical care: deductibles, copays, and coinsurance. To get them, you have to enroll in a Silver-tier plan and have a household income between 100% and 250% of the federal poverty level.12Office of the Law Revision Counsel. 42 USC 18071 – Reduced Cost-Sharing for Individuals Enrolling in Qualified Health Plans The reductions are automatic once you pick a qualifying Silver plan, and the lower your income, the more generous they are. At the lowest income bracket (100% to 150% of the poverty level), a Silver plan with cost-sharing reductions covers roughly 94% of medical expenses, comparable to Platinum coverage at a Silver premium.13Centers for Medicare & Medicaid Services. Actuarial Value Calculator Methodology
This is where plan shopping trips people up. A Bronze plan looks cheaper on the premium line, but if your income qualifies you for cost-sharing reductions, a Silver plan often costs less overall once medical bills are factored in. The reductions don’t exist on any other tier.
When You Can Sign Up
The annual Open Enrollment Period for 2026 coverage runs from November 1 through January 15. Enroll or switch by December 15 and your coverage starts January 1. Enroll between December 16 and January 15 and it starts February 1.14HealthCare.gov. When Can You Get Health Insurance Miss January 15 and you’re locked out until the next fall unless a qualifying life event opens a Special Enrollment Period.
If you’re already enrolled and do nothing, you’re typically auto-renewed into the same plan or a similar one. Auto-renewal is not always the best choice, though. Premiums, provider networks, and drug formularies change every year, so twenty minutes of comparison during Open Enrollment can save real money over the year ahead.
Outside Open Enrollment, a Special Enrollment Period gives you 60 days to pick a plan after a qualifying event.15HealthCare.gov. Getting Health Coverage Outside Open Enrollment Common triggers include:
- Losing existing coverage: a job-based plan ending, aging off a parent’s plan at 26, or individual coverage ending. Voluntarily dropping coverage doesn’t count.
- Household changes: marriage, birth or adoption of a child, or losing coverage through divorce.
- Moving: to a new ZIP code or county, to the U.S. from abroad, or to or from a school or seasonal work location.
- Other events: gaining citizenship, leaving incarceration, losing Medicaid or CHIP eligibility (which opens a 90-day window instead of 60), or being affected by a natural disaster.
Losing job-based coverage, including at the end of COBRA, qualifies. Having COBRA available to you doesn’t block you from picking a marketplace plan instead, and subsidies may make the marketplace option meaningfully cheaper than paying full COBRA premiums.16U.S. Department of Labor. FAQs on COBRA Continuation Health Coverage for Workers But if you elect COBRA and then drop it voluntarily before it runs out, that generally does not trigger a new Special Enrollment Period. The decision is best made when you first lose the job-based plan.
States That Still Require Coverage
The federal individual mandate penalty was reduced to $0 starting in 2019, but a few states and the District of Columbia still impose their own penalties for going without qualifying health insurance. As of 2026, California, Massachusetts, New Jersey, Rhode Island, and Washington, D.C., all enforce penalties generally set at the greater of a flat dollar amount per adult or 2.5% of household income above the filing threshold. Vermont requires residents to maintain coverage but doesn’t impose a financial penalty. If you live in one of these places, going uninsured costs you at tax time on top of the risk of uncovered medical bills.