Short answer
A deductible is an accumulated amount you pay before your plan starts paying for covered services subject to it. A copay is a stated, fixed payment for a covered service—not an accumulated threshold. Meeting a deductible usually does not end your share of the costs: copayments or coinsurance may follow. 1 2
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At a glance
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| Question | Deductible | Copay |
|---|---|---|
| What does it describe? | An amount to reach through covered-service spending | A fixed payment for a covered service |
| What is the source example? | $2,000 deductible | $20 office-visit copay |
| What happens after the deductible is met? | The plan generally starts sharing applicable costs | The illustrated visit costs the patient $20 |
These examples describe different roles, not interchangeable charges. 1 2
What each thing is
The deductible answers how much you must pay toward applicable covered care before the plan begins paying. The copay answers what fixed amount you owe for a particular covered service under the applicable benefit. HealthCare.gov illustrates the copay with a doctor’s visit after the deductible has been met. 1 2
Key differences
The main difference is accumulation versus a service-level charge. Several covered services can contribute toward reaching a deductible; a copayment specifies the patient’s fixed share for a service. In HealthCare.gov’s office-visit example, meeting the deductible changes the patient’s payment from the full $100 allowable cost to a $20 copay. 1 2
How to tell them apart
Ask whether the amount is a threshold to meet or a fixed payment attached to a service. That identifies the basic distinction. Its limit: a deductible figure alone does not reveal which services are subject to it, because plans can cover some care before it is met and can have separate service-specific deductibles. 1
Where they overlap
Both describe the patient’s share of covered health care costs, and both can appear in one plan’s payment structure. They are not competing labels for the same expense. HealthCare.gov describes copayments or coinsurance as usual patient payments after the deductible, while the insurer pays the rest. 1
Edge cases
A plan can have more than one deductible. Some plans separate prescription-drug spending, while family plans often have both individual and family deductibles. Consequently, saying that someone has met ‘the deductible’ may leave an important question unanswered: which deductible, and for whose care? 1
Why the distinction exists
The terms separate two different questions about coverage: when plan payments begin for applicable services, and what fixed share the patient pays for a service. Keeping those questions separate explains why reaching a deductible can change the bill without making later covered care free. 1 2
Common misconceptions
A deductible does not mean the plan pays nothing for every service until that threshold is reached: HealthCare.gov identifies pre-deductible coverage exceptions. Nor is a copay a percentage of a bill; the source distinguishes fixed copayments from percentage-based coinsurance. A stated copay alone should not be treated as proof of what every visit will cost. 1 2
Examples
Case 1, from the source: a covered office visit has a $100 allowable cost and a $20 copay. After the deductible is met, the patient pays $20; before it is met, the illustrated patient pays $100. 2
Case 2, hypothetical: a family plan has a separate prescription-drug deductible. Meeting its medical deductible alone does not establish that its drug deductible has been met—the two thresholds must be distinguished. 1