Bronze, silver, gold, platinum — what the tiers actually mean
The metal describes one thing: what share of a standard population's costs the plan is built to cover. It says nothing about quality or which doctors are in network.
Marketplace plans are sorted into four metal tiers. The metal does not describe the quality of the plan, the size of the network, or how good the insurer is. It describes one thing: what share of a typical population's medical costs the plan is designed to cover. That figure is called actuarial value.
| Tier | Actuarial value | Premium | What you pay when you use it |
|---|---|---|---|
| Bronze | 60% | Lowest | Highest deductible and out-of-pocket costs |
| Silver | 70% | Moderate | Moderate — and see the cost-sharing note below |
| Gold | 80% | Higher | Lower deductible and copays |
| Platinum | 90% | Highest | Lowest when you need care |
Actuarial values carry a permitted variation of about two percentage points either way, and an "expanded bronze" plan may reach 65%. Actuarial value is measured across a standard population, not against your own expected use.
Actuarial value is not your share
A bronze plan covering 60% does not mean you pay 40% of your own bills. It means that across a large standard population, the plan would pay 60% of total covered costs. Your individual share depends entirely on how much care you use. Someone healthy on a bronze plan may pay a far smaller share than 40%; someone who has a bad year may hit the out-of-pocket maximum and pay a far smaller share still.
The silver trap, and why it runs both ways
Silver plans carry something the other tiers do not: cost-sharing reductions. If your household income is between 100% and 250% of the poverty guideline, and only if you choose a silver plan, the deductible, copays and out-of-pocket maximum are all reduced — sometimes to the point where a silver plan behaves like a gold or platinum one.
This produces the single most expensive mistake in marketplace shopping: a household in that income range buys bronze because the monthly premium is lower, and forfeits a cost-sharing reduction worth considerably more than the premium they saved. The subsidy is attached to the metal, and it is not transferable.
If your income is between 100% and 250% of the poverty guideline, price the silver plans before you price anything else. If it is not, cost-sharing reductions are irrelevant to you and the ordinary trade-off applies.
Why the credit does not change when the tier does
Your premium tax credit is fixed by the benchmark — the second-lowest-cost silver plan in your area — and not by what you buy. So the credit is the same whichever tier you choose. Move down to bronze and the credit covers more of a smaller premium, sometimes all of it. Move up to gold and you pay the difference yourself.
This is worth understanding before shopping, because it means the sticker prices you see are not the prices you compare. What matters is each plan's price after a credit that does not move. How the credit is calculated.
Catastrophic plans
A fifth category exists but is restricted: catastrophic plans are open only to people under 30, or to those with a hardship or affordability exemption. They carry very low premiums and very high deductibles, and — importantly — the premium tax credit cannot be applied to them. For most people who qualify for a credit, a bronze plan after the credit costs less than a catastrophic plan without one.
How to choose, briefly
- Income between 100% and 250% of the guideline: start with silver, because of cost-sharing reductions.
- Regular prescriptions or expected treatment: compare gold against silver on total annual cost, not on premium.
- Healthy, and the concern is a catastrophe rather than routine care: bronze, having checked what it costs after the credit.
- Whatever the tier, check the network separately. Metal tiers say nothing about which doctors are covered, and that is the thing people most often discover too late.