What are the ACA health insurance metal tiers (bronze, silver, gold, platinum)?

The ACA divides marketplace health plans into four metal tiers — bronze, silver, gold, and platinum — based on how costs are split between you and the insurer. Bronze plans have the lowest premiums but highest out-of-pocket costs; platinum plans have the highest premiums but lowest out-of-pocket costs. Silver plans also unlock cost-sharing reductions for eligible lower-income enrollees.

Educational content — not insurance advice

ClearValue Lending is not affiliated with HealthCare.gov, HHS, or any insurer. This page is general financial education, not insurance advice. For specific plan comparisons, use HealthCare.gov's plan comparison tool or contact a licensed insurance broker.

The ACA requires all marketplace health plans to be sorted into four metal tiers: bronze, silver, gold, and platinum. The tiers are defined by actuarial value — the percentage of average healthcare costs the plan is designed to cover for a typical enrollee. The remaining percentage is your expected out-of-pocket share through deductibles, copays, and coinsurance. HealthCare.gov's plan categories page explains the framework in detail.

The four tiers at a glance

Bronze (60/40): Plan pays ~60% of average costs; you pay ~40%. Lowest monthly premiums, highest deductibles and out-of-pocket costs. Best if you are healthy and rarely use healthcare but want protection from catastrophic costs.
Silver (70/30): Plan pays ~70% of average costs; you pay ~30%. Mid-range premiums. Silver is the only tier eligible for cost-sharing reductions (CSRs), which can dramatically lower deductibles, copays, and out-of-pocket maximums for enrollees with income between 100% and 250% of the federal poverty level.
Gold (80/20): Plan pays ~80% of average costs; you pay ~20%. Higher premiums, lower out-of-pocket costs. Better if you use healthcare regularly — the math often favors gold over silver for frequent users.
Platinum (90/10): Plan pays ~90% of average costs; you pay ~10%. Highest premiums, lowest out-of-pocket costs. Suitable for those with predictably high healthcare utilization.

Why silver is special — cost-sharing reductions

Cost-sharing reductions (CSRs) are available only on silver plans and only for marketplace enrollees whose income is between 100% and 250% of the federal poverty level (FPL) and who receive a Premium Tax Credit. CSRs effectively upgrade a silver plan to gold- or platinum-level cost sharing (lower deductibles, lower out-of-pocket maximums) without changing the label. If you qualify for CSRs, a silver plan may give you gold-level benefits at silver-level premiums. HealthCare.gov's CSR guide has the income thresholds.

How to choose a tier

The right tier depends on how much healthcare you expect to use and your budget for premiums vs. out-of-pocket costs. The fundamental trade-off: bronze = bet on staying healthy (low premium, high exposure); platinum = hedge against heavy use (high premium, low exposure). Run a total-cost comparison: monthly premium × 12, plus realistic out-of-pocket spending under each tier's deductible and cost-sharing structure.

HealthCare.gov sources

Actuarial values by tier: bronze plans have an actuarial value of approximately 60%; silver 70%; gold 80%; platinum 90%. These are averages — actual out-of-pocket costs vary by specific plan design. — HealthCare.gov — Plan Categories (Metal Levels)
Cost-sharing reductions are available only on silver plans through the marketplace for people who qualify for a Premium Tax Credit and whose income is between 100% and 250% of the federal poverty level. — HealthCare.gov — Save on Out-of-Pocket Costs

Key takeaways

Bronze = lowest premium, highest out-of-pocket; platinum = highest premium, lowest out-of-pocket.
Silver is the only tier where cost-sharing reductions (CSRs) are available — they can dramatically lower deductibles for qualifying lower-income enrollees.
If your income qualifies for CSRs, compare a CSR-enhanced silver plan against gold before defaulting to bronze.
All tiers cover the same 10 essential health benefits — the tier affects cost-sharing, not benefit scope.