The Affordable Care Act created health insurance marketplaces where individuals and families who do not get coverage through an employer can shop for plans and, if eligible, receive financial help. Millions of Americans use these marketplaces, either through HealthCare.gov, which serves most states, or through a state-based exchange such as Covered California, Pennsylvania’s Pennie, or New York State of Health. The process is manageable if you take it in order.
When you can enroll
The annual open enrollment period on HealthCare.gov generally runs from November 1 to January 15. Enrolling by December 15 usually means coverage begins January 1, while enrolling later in the window typically starts coverage February 1. Several state-based exchanges keep their own deadlines, sometimes extending into late January, so check your state’s site.
Outside open enrollment, you need a qualifying life event to trigger a special enrollment period. Common examples include losing other health coverage, getting married, having or adopting a child, and moving to a new coverage area. You generally have 60 days from the event to pick a plan. People with household income below certain thresholds have also had access to monthly enrollment opportunities in recent years, though eligibility rules for that option have been subject to change, so confirm the current rules when you apply.
Understanding the metal tiers
Marketplace plans are grouped into tiers based on how costs are split between you and the insurer, not on the quality of care.
- Bronze. Lowest premiums, highest out-of-pocket costs. The plan covers roughly 60 percent of expected costs for a typical population.
- Silver. Moderate premiums and costs, about 70 percent actuarial value. Silver is the only tier eligible for cost-sharing reductions.
- Gold. Higher premiums, lower deductibles, about 80 percent actuarial value.
- Platinum. Highest premiums and lowest cost sharing, about 90 percent actuarial value, not available in every area.
- Catastrophic. Available to people under 30 or those with a hardship exemption. Very high deductibles, with three primary care visits and preventive care covered before the deductible.
All marketplace plans must cover the ten essential health benefits, including emergency services, hospitalization, maternity and newborn care, mental health and substance use services, prescription drugs, and preventive care. Insurers cannot deny you or charge more because of a pre-existing condition.
How the premium tax credit works
The premium tax credit lowers your monthly premium. Its size is based on your expected household income for the coverage year and the cost of the second-lowest-cost silver plan in your area, often called the benchmark plan. The government sets an expected contribution as a percentage of income, and the credit covers the difference between that amount and the benchmark premium.
You can take the credit in advance, paid directly to your insurer each month, or claim it when you file your federal tax return. If you take it in advance, you will reconcile the amount on IRS Form 8962. If your actual income ends up higher than estimated, you may have to repay some or all of the excess credit, so update your marketplace application when your income changes during the year.
The enhanced subsidies that removed the upper income limit for eligibility were scheduled under federal law to expire after 2025 unless Congress extended them. Because the rules for 2026 and later depend on legislation, look at the current figures in your application rather than relying on prior-year numbers.
Cost-sharing reductions
If your income falls between 100 percent and 250 percent of the federal poverty level and you choose a silver plan, you may qualify for cost-sharing reductions. These lower your deductible, copays, and out-of-pocket maximum. At the lower end of that range, a CSR silver plan can have an actuarial value higher than many gold plans, which is why picking bronze to save on premium can be a mistake for eligible households.
A methodical way to compare plans
- Estimate your income carefully. Use modified adjusted gross income, which for most people is adjusted gross income plus untaxed Social Security, tax-exempt interest, and excluded foreign income.
- List your doctors and prescriptions. Use the plan search tools to filter for networks that include your providers and formularies that cover your drugs.
- Check the network type. HMOs and EPOs usually cover only in-network care except emergencies. PPOs cover some out-of-network care at a higher cost. Narrow-network plans can be much cheaper but limit your choices.
- Compare total annual cost, not just premiums. Add 12 months of premiums to a realistic estimate of what you will spend on deductibles, copays, and coinsurance. For a person with ongoing treatment, the out-of-pocket maximum is often the most important number.
- Look at the out-of-pocket maximum. Federal rules cap it each year. Once you hit it, the plan pays 100 percent of covered in-network care for the rest of the year.
- Consider an HSA-eligible plan. Some bronze and silver plans qualify as high-deductible health plans, which allow you to contribute to a health savings account with pre-tax dollars.
Medicaid and CHIP screening
When you apply through the marketplace, your application is automatically screened for Medicaid and the Children’s Health Insurance Program. In states that expanded Medicaid under the ACA, most adults with income up to 138 percent of the federal poverty level qualify. In states that did not expand, some low-income adults may fall into a gap where they earn too little for marketplace subsidies but do not qualify for Medicaid. Children often qualify for CHIP at income levels well above adult Medicaid limits.
Avoiding common mistakes
- Missing the deadline. Set a calendar reminder for early December.
- Letting auto re-enrollment decide. If you do nothing, many exchanges re-enroll you in the same or a similar plan, but premiums and networks change each year. Shop again.
- Ignoring short-term plans’ limits. Short-term limited-duration plans are not ACA-compliant, may exclude pre-existing conditions, and do not qualify for subsidies.
- Using unverified brokers. Licensed agents and brokers can help for free, but confirm that they are registered with the marketplace and never share your login credentials.
Self-employed and gig workers
Freelancers, rideshare drivers, and small business owners without employees are some of the most frequent marketplace shoppers. Because income can swing from year to year, estimate conservatively and update your application if a big contract arrives. Self-employed people who are not eligible for an employer plan may also be able to deduct health insurance premiums on their federal return, subject to IRS rules that coordinate the deduction with the premium tax credit.
What to do after you enroll
Enrollment is not complete until you pay your first premium, sometimes called a binder payment. Watch for a welcome packet and member ID card from the insurer, create an online account with the plan, and confirm your primary care provider if the plan requires one. Keep Form 1095-A, which the marketplace sends early in the year, because you need it to file your taxes. If anything on the form looks wrong, contact the marketplace before you file.
Related reading: How State Minimum Auto Insurance Requirements Actually Work in the US.
Frequently Asked Questions
Can I get a marketplace subsidy if my employer offers insurance?
Usually not, if the employer plan is considered affordable and meets minimum value standards. A rule change that took effect in 2023 also looks at the cost of family coverage when deciding whether family members qualify.
What documents do I need?
Have Social Security numbers, immigration documents if applicable, pay stubs or tax returns, and information about any current coverage ready.
What if I choose the wrong plan?
You generally cannot switch mid-year without a qualifying event, so review networks and drug lists carefully before the deadline.
Do I have to pay a penalty if I go without coverage?
There is no longer a federal tax penalty for being uninsured, but California, Massachusetts, New Jersey, Rhode Island, and the District of Columbia have their own individual mandates with state penalties.
This article is for general informational purposes only and is not legal, medical, tax, or financial advice. Rules vary by state and change over time; confirm details with the relevant agency or a licensed professional.
