How to Choose an ACA Marketplace Health Plan for 2027

If you don’t get health insurance through a job, Medicare or Medicaid, the ACA Marketplace (HealthCare.gov or your state’s exchange) is where most people buy coverage. For 2027 plans, premiums are higher, subsidy rules are tighter and some insurers have left. This guide explains deadlines, metal tiers, subsidies and how to pick a plan without overpaying.

Key dates for 2027 coverage

Deadlines differ by state and were the subject of litigation, so confirm yours on HealthCare.gov or your state exchange.

Special Enrollment Periods

Outside Open Enrollment, you generally need a qualifying life event — losing job-based coverage, moving, marriage, having a baby or adopting — which usually opens a 60-day window. People eligible for Medicaid or CHIP can apply any time.

Metal tiers explained

All Marketplace plans must cover the ACA’s essential health benefits — including preventive care, hospitalization, maternity, mental health and prescription drugs — and cannot deny you for pre-existing conditions.

Subsidies in 2027: what changed

• The enhanced premium tax credits of recent years have expired, so many people see higher net premiums.
• Premium tax credits are again generally limited to households with income between 100% and 400% of the federal poverty level. Above 400%, you pay the full price.
• Benchmark silver premiums rose about 13% on average for 2027.
• Limits on repaying excess advance tax credits were eliminated, so report income changes quickly to avoid a large tax bill.
• Cost-sharing reductions (lower deductibles and copays) remain available on silver plans for incomes up to 250% FPL.
• Some states (for example, New Mexico and California) add their own subsidies.
• Eligibility for tax credits narrowed for some lawfully present immigrants.

How to choose a plan (step by step)

1. Estimate your 2027 household income as accurately as possible.
2. Check subsidy eligibility on HealthCare.gov or your state exchange.
3. List your doctors, hospitals and prescriptions and filter plans that include them. Network type matters (HMO, EPO, PPO).
4. Compare total yearly cost, not just the premium:
   • Premiums × 12
   • + expected copays and coinsurance
   • + the deductible if you expect to use care
   • Worst case: premiums + out-of-pocket maximum
5. Consider an HSA-eligible Bronze plan if you are healthy and can save in a Health Savings Account.
6. Don’t auto-renew blindly — your current plan’s price or network may have changed.

Example: comparing two plans

The cheapest premium wins in a healthy year; a richer plan can win if you expect significant care.

Avoid these mistakes

• Buying a “health plan” from an unofficial site that is actually a short-term plan or discount card without ACA protections.
• Ignoring the network — out-of-network care can cost far more.
• Underestimating income to get a bigger subsidy; you may have to repay it at tax time.
• Missing the December 15 deadline if you need coverage on January 1.
• Letting a broker enroll you without confirming the plan details yourself.

Bottom line: for 2027 coverage, enroll by December 15, 2026 for a January 1 start, compare plans by total yearly cost and network, and check your subsidy carefully now that enhanced tax credits have expired. Need help comparing any insurance? See how to compare insurance quotes.

General information, not personalized insurance or tax advice. Confirm deadlines and eligibility at HealthCare.gov or your state exchange.