Copay vs Coinsurance Calculator

Copayments and coinsurance are two different ways your plan splits the bill with you, and the difference shows up directly in what you pay at the point of care. Sorting out which one applies, and when, is essential for budgeting and for comparing health insurance plans that may look similar on paper but charge you very differently in practice.

The calculator compares the two over a year of visits. The copay side is your copay times the number of visits; the coinsurance side is the average allowed cost of a visit times your coinsurance rate times the number of visits. The lower total is shown as the better option, with the difference as your savings. It assumes your deductible is already met and does not apply an out-of-pocket maximum; before the deductible is met, you generally pay the full allowed amount under either design.

It helps to hold the two terms apart, because a copay and coinsurance behave in distinct ways. Coinsurance typically only kicks in after the deductible is satisfied, while certain services such as preventive care may be fully covered with no deductible or copay at all. Your plan documents spell out exactly which rules apply to which services, so it's worth checking them against your own situation.