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Out of Pocket Maximum vs Coinsurance Explained

Short answer

Out-of-pocket maximum and coinsurance are different parts of health insurance costs. The out-of-pocket maximum is the total you pay annually for covered services before insurance pays 100%, while coinsurance is the percentage of costs you pay after meeting your deductible but before hitting that maximum. Understanding both helps manage healthcare expenses.

What Is an Out of Pocket Maximum?

An out-of-pocket maximum is the most you will pay for covered healthcare services in a plan year. After you spend this amount on deductibles, coinsurance, and copayments, your insurance covers 100% of eligible costs. This cap protects you from very high medical bills. For example, if your out-of-pocket maximum is $5,000, once you’ve paid $5,000 through deductibles, coinsurance, and copays, you won’t pay anything more for covered care until the next year. It does not include your monthly premiums or costs for services not covered by your insurance. This limit provides financial predictability and security during costly medical treatments or emergencies. To learn more about how this works, see Out of Pocket Maximum Meaning and Importance.

What Is Coinsurance in Health Insurance?

Coinsurance is the percentage of a medical bill you pay after meeting your deductible but before reaching your out-of-pocket maximum. For example, if your coinsurance is 20%, you pay 20% of the cost of a service, and your insurer pays 80%. If a $1,000 procedure occurs after your deductible is met, you pay $200, and your insurer pays $800. Coinsurance continues until the total of your deductibles, copays, and coinsurance reach your out-of-pocket maximum. At this point, the insurer covers 100%. Coinsurance shares costs between you and your insurer, encouraging cost-conscious care decisions.

How Do Out of Pocket Maximum and Coinsurance Work Together?

Coinsurance payments count towards your out-of-pocket maximum. Here’s how they interact: you first pay your deductible in full. After that, coinsurance applies, meaning you pay a set percentage of each bill. These payments accumulate. Once the sum of your deductible, coinsurance, and any copays hits your out-of-pocket maximum, your insurance covers all further costs for the year. For instance, if your deductible is $1,000, coinsurance is 20%, and your out-of-pocket maximum is $5,000, you pay the first $1,000, then 20% of subsequent bills until you’ve paid $5,000 total. Then your insurer pays 100%. This structure balances upfront costs and ongoing sharing of expenses.

What Are the Key Differences Between Out of Pocket Maximum and Coinsurance?

FeatureOut of Pocket MaximumCoinsurance
DefinitionMaximum total amount you pay per year for covered servicesPercentage of costs you pay after deductible
When It AppliesAfter paying deductible, coinsurance, copays until limitAfter deductible, on each covered service cost
PurposeCaps your total spendingShares costs between you and insurer
Amount TypeFixed dollar amountPercentage of medical bills
Impact on PaymentStops all further payments once reachedRequires ongoing payments until max reached
IncludesDeductibles, coinsurance, copaysOnly coinsurance costs
Does Not IncludePremiums, non-covered servicesDeductible, copays

Who Benefits More from Each Feature?

Choosing a plan with a low out-of-pocket max may cost more in monthly premiums but offers peace of mind. A plan with higher coinsurance but lower premiums could be cost-effective if you rarely use medical services.

What Questions Should You Ask Before Choosing Between Plans With Different Coinsurance and Out of Pocket Maximums?

To choose the best plan for you, consider these questions:

  1. What is the out-of-pocket maximum, and does it include all your cost-sharing (deductibles, coinsurance, copays)?
  2. What is the deductible, and how does it relate to coinsurance?
  3. How much is the coinsurance percentage, and how often do you expect to use medical services?
  4. What are the monthly premiums, and how do they balance with out-of-pocket costs?
  5. Does the plan cover your preferred doctors and medications?
  6. Are copays included in the out-of-pocket maximum?
  7. What services are excluded from the out-of-pocket maximum?

Answering these helps align your budget with your likely healthcare use. For details on how deductibles and out-of-pocket maximums relate, see Out of Pocket Maximum vs Deductible: What’s the Difference? and Does Out-of-Pocket Maximum Include Copays.

Can You Switch Plans If You Don’t Like Your Out of Pocket Maximum or Coinsurance?

Yes. You can switch health insurance plans during open enrollment or qualifying life events like moving, marriage, or job changes. If your current plan’s out-of-pocket maximum or coinsurance doesn’t fit your healthcare needs or budget, review alternatives with different cost-sharing structures. Keep in mind:

Talk to your insurance provider or a licensed agent about options. If you switch outside open enrollment without a qualifying event, coverage may not be allowed.

How Can Understanding These Terms Save You Money?

Knowing the differences between coinsurance and out-of-pocket maximum helps you:

For a full understanding of out-of-pocket maximums and how they protect you, see How Out of Pocket Maximum Works for Health Insurance and Do I Pay Coinsurance After Out-of-Pocket Maximum.

Frequently asked questions

Is out of pocket maximum the same as coinsurance?

No. The out-of-pocket maximum is the total cap on your yearly spending for covered services, while coinsurance is the portion of costs you pay as a percentage after meeting your deductible. Coinsurance payments contribute toward reaching your out-of-pocket maximum.

How does out of pocket maximum work with coinsurance?

Coinsurance payments count toward your out-of-pocket maximum. After you pay your deductible, you pay coinsurance on covered services until your total spending hits the out-of-pocket max, after which insurance pays 100%.

Does the out-of-pocket maximum include copays?

Usually yes, but it depends on your plan. Most plans count copays toward the out-of-pocket maximum, but it's important to check your specific insurance details.

Can I negotiate my coinsurance rate or out-of-pocket maximum?

Typically, no. These terms are set by your insurance plan. However, you can shop for different plans during open enrollment or qualifying events that better fit your financial needs.

What happens if I don’t meet my deductible?

If you don’t meet your deductible, you generally pay 100% of covered costs until you reach it. Coinsurance only applies after the deductible is met.

Does premium count toward out-of-pocket maximum?

No. Monthly premiums are separate and not counted toward your out-of-pocket maximum, which only covers deductibles, coinsurance, and copays.

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Sources and further reading

General financial education, not individual financial, tax or investment advice. Check current figures with the official source before acting.