Medicare Copays vs Coinsurance
Copayments and coinsurance explained and how they affect your costs
Written by Walter Johnson, Licensed Insurance Agent
This article is for educational purposes only and is not a solicitation for insurance
OFFICIAL 2026 EDUCATIONAL RESOURCE BY WALTER JOHNSON, LICENSED INSURANCE AGENT (CA #0J15814).
Copayments and coinsurance explained and how they affect your costs
Written by Walter Johnson, Licensed Insurance Agent
This article is for educational purposes only and is not a solicitation for insurance
Medicare copays vs coinsurance explained. Learn the difference, how each works, and what you’ll pay for healthcare services.
Medicare Copays vs Coinsurance
Copayments and coinsurance are two ways you share the cost of healthcare services under Medicare.
Understanding the difference between them helps you better estimate your out-of-pocket costs.
Start here: 👉 Medicare Costs
What Is a Copayment?
A copayment (copay) is a fixed amount you pay for a healthcare service.
For example:
You may pay a set fee for a doctor visit
You may pay a flat amount for prescription drugs
The cost does not change based on the total price of the service.
What Is Coinsurance?
Coinsurance is a percentage of the cost of a service that you pay.
For example:
Medicare may pay 80%
You pay the remaining 20%
This means your cost can vary depending on how expensive the service is.
How Medicare Uses Copays and Coinsurance
Different parts of Medicare use these cost-sharing methods in different ways.
Part B typically uses coinsurance (usually 20%)
Medicare Advantage plans often use copayments for services
Understanding which applies helps you estimate your costs more accurately.
Learn more: 👉 How Medicare Works
Examples of Copays vs Coinsurance
Copay example:
You pay $20 for a doctor visit
The cost stays the same regardless of the total bill
Coinsurance example:
A service costs $1,000
Medicare pays 80% ($800)
You pay 20% ($200)
Your cost changes based on the total service cost.
When You Pay These Costs
You typically pay copays or coinsurance after meeting your deductible.
These costs apply each time you receive care, depending on your plan.
Learn more: 👉 Medicare Deductibles Explained
How These Costs Affect Your Budget
Copayments provide more predictable costs
Coinsurance can vary and may be higher for expensive services
Understanding the difference helps you plan for healthcare expenses more effectively.
Learn more: 👉 How Much Does Medicare Cost Per Month
Copays and Coinsurance in Medicare Advantage
Medicare Advantage plans often use copayments instead of coinsurance.
These plans may offer:
Fixed costs for services
Annual out-of-pocket maximums
However, costs and rules vary by plan.
Learn more: 👉 How Medicare Advantage Plans Work
Why This Matters
Understanding copays and coinsurance helps you:
estimate your out-of-pocket costs
avoid unexpected expenses
choose the right coverage
Next Step
Now that you understand copays and coinsurance, the next step is reviewing total out-of-pocket costs under Medicare.
Continue to: 👉 Medicare Out-of-Pocket Costs
Related Guides
• Medicare Costs
• Medicare Deductibles Explained
• How Much Does Medicare Cost Per Month
• How Medicare Advantage Plans Work