The Health Insurance Marketplace (also called the Exchange) is the official platform where you can shop for, compare, and enroll in ACA-compliant health insurance plans. It’s also where you apply for Premium Tax Credits and Cost-Sharing Reductions based on your household income.
Most states use the federal Marketplace at HealthCare.gov. Some states run their own: California (Covered California), New York (NY State of Health), Florida (Florida Blue), and others. Subsidies are available on both.
You can only enroll through the Marketplace during specific windows:
Plans purchased off-Marketplace (directly from an insurer) are ACA-compliant but do not qualify for subsidies. If you think you may qualify for financial assistance, always enroll through the Marketplace.
Any U.S. citizen or lawfully present immigrant who isn’t eligible for employer-sponsored coverage that meets minimum value standards, and isn’t enrolled in Medicare or Medicaid, can use the Marketplace. Eligibility for subsidies is based on income and household size. A broker can confirm your eligibility and run your subsidy estimate at no cost to you.
Buying off-Marketplace is fine for coverage, but you give up your eligibility for Premium Tax Credits and Cost-Sharing Reductions. For most families, those subsidies are the biggest financial benefit of ACA coverage — so unless you have a specific reason to go off-Marketplace, enrolling through the Exchange is almost always the better financial decision.
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