The short answer
Medicare Advantage plans can be inexpensive in a healthy year — often a low or zero premium. The real question is what they cost in a bad year, because that's when the tradeoff shows up. Instead of a steady supplement premium, you pay copays and coinsurance as you use care, up to the plan's annual out-of-pocket maximum. In a serious health year, you can reach that maximum.
So the honest way to compare Advantage against Original Medicare with a supplement isn't the premium — it's the worst-case cost. That's the number that protects you when you're sick.
How the out-of-pocket maximum works
Every Medicare Advantage plan has a yearly cap on what you pay in-network for Medicare-covered services. Once your copays and coinsurance add up to that cap, the plan covers the rest for the year. That cap is a real protection — but it can be several thousand dollars, and it resets every January.
The catch is that the cap only applies to covered, in-network services. Out-of-network care (on plans that allow it) can carry a separate, higher limit, and some costs don't count toward the cap at all. Our guide to the hidden costs of $0-premium Advantage plans breaks this down.
What a serious year looks like
Picture a year with a cancer diagnosis or a hospital stay and surgery. Under Medicare Advantage, you'd pay copays for the hospital days, the specialist visits, the imaging, the chemotherapy administration — and those add up quickly toward your out-of-pocket maximum. Many people in a serious year end up paying close to that full cap.
By contrast, Original Medicare with a comprehensive Medigap plan tends to have a higher monthly premium but very little cost when you use care, which is why people who prioritize predictability lean that way. To model your own numbers, our cost estimator helps, and a hospital indemnity plan is one way Advantage members offset a heavy year.
Frequently Asked Questions
Does Medicare Advantage have an out-of-pocket maximum?
Yes. Every Medicare Advantage plan caps what you pay in-network for covered services each year. Once you hit it, the plan covers the rest until it resets in January.
How much can Medicare Advantage cost in a bad year?
In a serious health year you can pay close to the plan's out-of-pocket maximum, which is often several thousand dollars, through accumulated copays and coinsurance.
Is Medicare Advantage or Medigap cheaper overall?
It depends on your health. Advantage often costs less in a healthy year; Original Medicare with a Medigap plan usually costs less in a high-use year because you pay little at the point of care.
How can I limit Medicare Advantage costs in a bad year?
Understand your plan's out-of-pocket maximum, stay in network, and consider supplemental coverage like a hospital indemnity plan to offset copays during a heavy year.
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