One of the most important questions people ask about Medicare is whether there’s a limit to how much they can spend on healthcare each year.
After all, with many types of insurance, there comes a point where the plan begins covering 100% of eligible costs once you’ve spent enough out of pocket. Naturally, many Medicare beneficiaries assume the same thing applies to Medicare.
The answer depends on the type of Medicare coverage you have.
In some cases, Medicare does include an annual maximum out-of-pocket limit. In other cases, there is no built-in cap at all. Understanding the difference is extremely important because it can have a major impact on your financial exposure during a serious illness or medical event.
Let’s break down how this works.
What Is a Maximum Out-of-Pocket Limit?
A maximum out-of-pocket limit is the most you’ll pay during a plan year for covered healthcare services. Once you reach that limit, the insurance plan generally pays 100% of covered medical expenses for the rest of the year.
This type of protection is important because it helps prevent catastrophic medical bills from continuing indefinitely.
Many employer health plans and individual marketplace plans include annual out-of-pocket maximums. However, Medicare works differently depending on whether you have Original Medicare or a Medicare Advantage plan.
Original Medicare Does Not Have a Built-In Out-of-Pocket Maximum
One of the biggest surprises for many beneficiaries is that Original Medicare does not include a built-in annual out-of-pocket limit for Part A and Part B services.
Original Medicare consists of:
- Part A (hospital insurance)
- Part B (medical insurance)
While Medicare helps cover many healthcare expenses, beneficiaries are still responsible for deductibles, copays, and coinsurance. Under Part B, for example, Medicare typically pays 80% of approved outpatient medical costs after the deductible is met, leaving you responsible for the remaining 20%.
That 20% has no annual cap under Original Medicare alone.
For routine healthcare expenses, this may not seem like a major issue. But if you experience a serious illness, extensive outpatient treatment, surgery, or ongoing chemotherapy, those costs can add up quickly.
In other words, there is technically no limit to what you could spend out of pocket under Original Medicare by itself.
Why This Matters
The lack of an out-of-pocket maximum is one of the main reasons many people choose additional coverage.
A major hospitalization or expensive medical treatment could potentially leave someone with thousands (or even tens of thousands!) of dollars in coinsurance costs over time.
For example, under Part B, you generally pay 20% of the Medicare-approved amount for covered services. If you undergo a very expensive outpatient procedure or require ongoing specialist care, your share can become significant.
This is especially important for retirees living on fixed incomes, where large unexpected healthcare expenses can create financial strain.
Medicare Advantage Plans Do Have Out-of-Pocket Maximums
Unlike Original Medicare, Medicare Advantage plans are required to include an annual maximum out-of-pocket limit for covered Part A and Part B services.
This is one of the major differences between the two types of coverage.
With a Medicare Advantage plan, once your spending on covered medical services reaches the plan’s maximum limit, the plan generally pays 100% of covered in-network costs for the remainder of the year.
This cap provides an important layer of financial protection.
However, there are a few things to keep in mind.
First, the maximum out-of-pocket amount varies from plan to plan. Some plans have lower limits, while others are much higher.
Second, these limits typically apply only to covered medical services within the plan’s network. Out-of-network costs may work differently depending on the type of plan.
Finally, prescription drug costs under Part D are handled separately and do not usually count toward the medical out-of-pocket maximum.
Medigap Plans Help Fill the Gap
For people who prefer Original Medicare but still want protection from high out-of-pocket costs, Medigap plans are often part of the solution.
Medigap (Medicare Supplement) plans are designed to help pay some of the costs that Original Medicare leaves behind, such as:
- Coinsurance
- Copays
- Deductibles
Some Medigap plans provide very comprehensive coverage, significantly reducing your exposure to large medical bills.
While Medigap plans do not technically create an official “out-of-pocket maximum” in the same way Medicare Advantage plans do, they can dramatically limit your actual healthcare spending by covering many of Medicare’s gaps.
This is one reason many people choose Original Medicare paired with a Medigap plan instead of relying on Original Medicare alone.

What Counts Toward a Medicare Advantage Out-of-Pocket Maximum?
This is an area that can sometimes create confusion.
Generally, the following types of costs count toward a Medicare Advantage plan’s maximum out-of-pocket limit:
- Copays
- Coinsurance
- Deductibles for covered medical services
However, not every healthcare expense counts toward that limit.
Monthly premiums usually do not count. Prescription drug costs are also typically tracked separately under Part D coverage. In addition, services that are not covered by the plan won’t apply toward the maximum.
That’s why it’s important to review a plan’s details carefully rather than assuming all healthcare spending contributes toward the cap.
Which Option Is Better?
There’s no one-size-fits-all answer when comparing Original Medicare and Medicare Advantage.
Some people prefer the predictability of Medicare Advantage plans, knowing there is a built-in annual spending limit for covered medical services.
Others prefer the flexibility of Original Medicare combined with a Medigap plan, which may offer broader provider access and lower out-of-pocket costs depending on the situation.
The right choice depends on factors like:
- Your budget
- Your health needs
- Your preferred doctors and hospitals
- Your comfort level with provider networks
- Your tolerance for financial risk
Understanding how out-of-pocket exposure works is a key part of making an informed decision.
Why Reviewing Your Coverage Matters Every Year
Healthcare needs and plan costs can change over time. A plan that worked well one year may not be the best fit the next.
That’s why it’s important to review:
- Your plan’s out-of-pocket maximum
- Copays and coinsurance
- Provider networks
- Prescription drug coverage
- Overall healthcare usage
Even small changes can impact your total healthcare spending over the course of a year.
If you have questions about Medicare costs or want help comparing coverage options, the team at Carolina Senior Benefits can help you better understand your choices and find a plan that fits your needs and budget.
