Copays vs. Coinsurance — What's the Difference?

If you've ever looked at a health plan, you've probably seen terms like:

• $30 Primary Care Copay
• 20% Coinsurance
• Specialist Copay
• Hospital Coinsurance

They all represent what the employee pays—but they work very differently.

What Is a Copay?

A copay is a fixed dollar amount you pay when receiving certain healthcare services.

For example:

• Primary Care Visit: $30
• Specialist Visit: $60
• Urgent Care: $75
• Prescription Drug: $15

No matter what the provider charges, your responsibility is the fixed copay (assuming the service isn't subject to the deductible).

Copays are simple and predictable.

What Is Coinsurance?

Coinsurance is different.

Instead of paying a fixed dollar amount, you pay a percentage of the allowed medical cost.

For example:

Hospital bill: $20,000

Insurance pays 80%

Employee pays 20%

Employee responsibility = $4,000

Unlike copays, coinsurance can vary significantly depending on the cost of the service.

Which Is Better?

Neither is necessarily better.

Copays provide certainty and are common for routine care.

Coinsurance encourages members to be more aware of healthcare costs because they share a percentage of the expense.

Many plans combine both.

For example:

• Physician visits may use copays.
• Hospital services often use deductibles and coinsurance.

Why Employers Should Understand This

Copays generally create a better employee experience because costs are predictable.

Coinsurance often lowers premiums but increases financial responsibility when employees need expensive care.

Choosing the right balance is an important part of designing a health plan.