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A health plan asks you to pay for care in three different ways, and the names blur together fast. Deductible, copay, coinsurance. Each one applies at a different point in the year, and a single hospital visit can involve all three.
The deductible comes first
The deductible is the amount you pay for covered services before the plan starts sharing costs. If your plan has a deductible, routine office visits might be covered with a simple copay while lab work, imaging, and hospital care sit behind the deductible. Plans handle this differently, so check the summary of benefits instead of assuming every service works the same way.
Premiums never count toward the deductible. Neither do services the plan does not cover. Our guide to how health insurance premiums are calculated explains where the premium itself comes from, which helps keep the two costs separate in your head.
Copays are the flat amounts
A copay is a set amount you pay at the time of a visit or when you pick up a prescription. The amount depends on the type of care. Primary care usually carries a lower copay than a specialist visit, and urgent care often sits somewhere in between. Some plans apply copays before you meet the deductible and some apply them after. The plan documents say which, in plain language, under cost sharing.
Coinsurance is a percentage
Once you have met the deductible, coinsurance usually takes over. You pay a percentage of the allowed cost for a service and the plan pays the rest. A percentage sounds small until the bill is large, which is why hospital care is where coinsurance hurts most. This is also where the out-of-pocket maximum matters, because it caps how much of this you can be asked to pay in a plan year.
How the three meet on one bill
Picture a planned surgery. You have already paid part of your deductible earlier in the year. You pay the rest of it on this bill. After that, coinsurance splits the remaining allowed amount between you and the plan. Later in the year, a follow-up visit to your regular doctor may only cost a copay. Same plan, three different payment rules, depending on the service and where you stand with the deductible.
If you are comparing two plans, the comparison in Bronze vs Silver health plans shows how these pieces change the total you pay across a year, not just the premium. People who qualify for extra help should also read how cost-sharing reductions on Silver plans lower the deductible and coinsurance amounts themselves.
A quick way to read any plan
Find four numbers on the summary page: the deductible, a typical copay or two, the coinsurance percentage for hospital care, and the out-of-pocket maximum. Those four numbers tell you more about a plan than the marketing name or the metal tier on its own.
