Definition
What Is a Copay?
Last updated
A copay, or copayment, is a fixed dollar amount you pay for a covered prescription or health care service, set by your insurance plan, that you generally pay at the time you receive the service or fill the prescription. The amount can vary depending on the type of drug or service, and different formulary tiers usually carry different copay amounts.
How it affects what you pay
Your copay is one of the most predictable costs in prescription drug coverage, because it's a flat amount rather than a percentage, unlike coinsurance (CMS, Glossary of Health Coverage and Medical Terms). A generic drug on a lower formulary tier typically carries a smaller copay than a brand-name drug on a higher tier. Copays generally count toward your annual out-of-pocket maximum, though whether they count toward your deductible first depends on your specific plan design. Because the copay is fixed by your plan rather than tied to the pharmacy's actual cost, it's occasionally possible for a copay to be higher than a pharmacy's cash price for the same drug, especially for older, inexpensive generics.
Example
Consider a hypothetical plan with a three-tier formulary: a generic drug might carry a smaller flat copay, a preferred brand-name drug a larger flat copay, and a non-preferred brand-name drug the largest flat copay. Under this kind of structure, the tier a drug falls into, not its actual retail price, determines what the patient pays at the counter. This is a general illustration, not a real plan's actual copay amounts.
Copay versus coinsurance
A copay is a flat dollar amount, while coinsurance is a percentage of the allowed cost of the drug or service (HealthCare.gov Glossary, Copayment). Many plans use copays for prescription drugs and coinsurance for other medical services, though some plans use coinsurance for higher-tier specialty drugs instead of a flat copay. Check your plan's Summary of Benefits and Coverage to see which cost-sharing method applies to your specific medications.
Comparing your copay against the cash price
Because copay amounts are set by your plan's contract with its pharmacy benefit manager rather than the pharmacy's actual cost, it's worth asking your pharmacist for the cash price alongside your copay, particularly for common generics. See our guide on cash price vs insurance copay for a full comparison approach. You can also compare prescription prices on BetterBuyRx to check typical cash pricing for your medication ahead of a refill.
When your copay changes
Copay amounts can change at your plan's annual renewal, if your plan changes its formulary tiers mid-year, or if your prescribed drug's tier placement changes. Search your medication on BetterBuyRx periodically, especially around renewal time, to make sure you're not missing a cheaper option.
Frequently asked questions
Is a copay the same every time I fill a prescription?
It's usually a fixed amount for a given drug tier, but the amount can vary by which tier your specific drug falls into on your plan's formulary, and it can change if your plan's benefit design changes at renewal.
Does my copay count toward my deductible?
It depends on your plan. Some plans apply copays toward the deductible, others apply copays only after the deductible is met, and high-deductible plans often require you to pay full cost until the deductible is met before copays apply.
Can my copay ever be higher than the cash price?
Yes, this can happen, particularly with some low-cost generic drugs. It's reasonable to ask your pharmacist for both the copay and the cash price before you pay.
Sources
Compare prices & find savings
This page is for cost and savings education only. It is not medical advice. Talk to your doctor or pharmacist about your specific medications and coverage. Prices vary by pharmacy, location, quantity, and eligibility.
Related terms & guides
- Cash Price vs Insurance Copay: Which Can Be Cheaper?
When paying cash for a prescription can beat your insurance copay, why it happens, and how to check both prices before you pay.
- What Is Coinsurance?
Coinsurance definition: how the percentage-based cost share works for prescriptions, how it differs from a copay, and how it affects your bill.
- What Is a Deductible?
Deductible definition: what you pay before insurance kicks in for prescriptions, how it resets, and how it interacts with copays and coinsurance.