Medicare Advantage Out-of-Pocket Maximum vs Original Medicare
Last Updated: October 26, 2026
Quick Summary
The Medicare Advantage out of pocket maximum vs Original Medicare difference is that Original Medicare has no annual cap on your share of covered costs, while Medicare Advantage plans set a yearly maximum out-of-pocket limit. Once you reach that cap, the plan pays 100% of covered in-network costs for the rest of the year.
Original Medicare leaves you paying 20% coinsurance on most services with no point at which it stops.
Many Medicare Advantage plans set their MOOP below the federal maximum to compete for members.
Monthly premiums and most prescription drug spending generally do not count toward the medical MOOP.
Part D has its own separate annual out-of-pocket limit, apart from the medical MOOP.
Medigap is easiest to buy during your open enrollment window, when insurers cannot charge more for health.
Table of Contents
Medicare Advantage vs Original Medicare Costs: The Core Difference
The Medicare Advantage out of pocket maximum vs Original Medicare comes down to one fact: Original Medicare has no annual cap on your share of covered medical costs, while Medicare Advantage plans do, which is the core of the Medicare Advantage out of pocket maximum vs Original Medicare comparison.
A premium is a predictable payment; an out-of-pocket maximum is a worst-case ceiling.
Below, we'll show how each option handles cost sharing and what counts toward the Advantage cap.
How Each Option Handles Cost Sharing
Original Medicare splits costs with you through deductibles, copayments, and coinsurance, with no ceiling. Medicare Advantage plans replace that with a network, service-specific copays, and an annual limit on in-network spending.
The official comparison of Original Medicare and Medicare Advantage confirms the core point: Original Medicare has no yearly out-of-pocket limit unless you have other coverage. That "other coverage" is usually Medigap, and we'll get to it.
Feature | Original Medicare (Parts A & B) | Medicare Advantage (Part C) |
Annual out-of-pocket cap | None | Yes, an annual MOOP limit |
Monthly premium | Part B premium | Part B premium plus plan premium, sometimes $0 |
Provider network | Any provider who accepts Medicare | Plan network, in-network vs out-of-network rates |
Drug coverage | Separate Part D plan needed | Often bundled into the plan |
Extra benefits | Limited | May include dental, vision, hearing |
Best for | People who want broad provider access | People who want a defined cost ceiling |
Does Original Medicare Have an Out-of-Pocket Maximum?
No. Original Medicare has no out-of-pocket maximum, so there is no annual spending limit on your share of covered services (Costs). You pay your Part B premium, your deductible, then 20% coinsurance on most covered services, with no point at which that 20% stops (What does Medicare cost?).
That 20% sounds manageable until you apply it to a large bill. There is no cap protecting you, precisely the gap Medigap policies were designed to fill.
What You Pay Under Original Medicare Alone
Under Original Medicare alone, you face cost sharing on nearly every service, and exposure scales with the size of the bill. A hospital stay, surgery, or course of treatment carries coinsurance that grows with the cost of care rather than stopping at a fixed ceiling.
A common mistake is assuming the Part B premium is the whole story. The premium buys coverage; the deductible, copays, and coinsurance are what you actually pay when you use it.
How the Medicare Advantage Out-of-Pocket Maximum Works
The Medicare Advantage out-of-pocket maximum is a hard annual ceiling on in-network cost sharing for covered Part A and Part B services. Once you reach it, the plan pays 100% of covered in-network costs for the rest of the year. That protection is real, but how the limit is set and what it covers is where most people get surprised.
The Federal Maximum vs. a Plan's Own Limit
There are two different numbers people mean when they say "the MOOP."
The federal maximum. The Centers for Medicare & Medicaid Services (CMS) sets an annual cap on how high a plan's in-network MOOP may be.
The plan's own limit. Many plans set their MOOP below the federal maximum to compete for members.
Comparing plans on premium alone misses the point: the cap determines your worst-case year, and it is plan-specific. Confirm the current plan year's MOOP in the plan's Summary of Benefits and Coverage rather than relying on last year's figure.
What Counts Toward the MOOP and What Does Not
Not every dollar you spend counts toward the cap. The general rule:
Generally counts toward the MOOP
Deductibles, copayments, and coinsurance for covered in-network Part A and Part B services (hospital stays, outpatient care, physician visits, lab work, and similar).
Cost sharing for covered services from in-network providers, including specialists and facilities.
On plans that offer out-of-network coverage, cost sharing for covered out-of-network services counts toward the combined limit, which is set higher than the in-network limit.
Generally does NOT count toward the MOOP
Monthly premiums (the Part B premium and any plan premium).
Services the plan does not cover.
Most prescription drug spending, Part D has its own separate annual out-of-pocket limit (covered below).
Watch Out The practical takeaway: read the plan's Evidence of Coverage and Summary of Benefits and Coverage and confirm exactly which categories count before you assume a cap protects a particular expense. A cap on medical cost sharing is not a cap on everything you will spend.
If you are weighing how networks and caps behave when you leave your home area, our breakdown of the best Medicare plan for people who travel in 2026 explains how plan type affects both access and cost.
Worked Cost Scenarios: A Serious Diagnosis Under Each Option
Most comparisons stop at "Advantage has a cap, Original Medicare doesn't." True, but not useful for a budget. Here is how the math plays out across three kinds of years, using assumptions you can substitute with your own.
Low-Use Year (routine visits and a few prescriptions)
Original Medicare alone: Part B premium plus the Part B deductible and modest 20% coinsurance on a handful of visits. Total medical out-of-pocket commonly lands in the low hundreds of dollars.
Medicare Advantage: Part B premium plus $0 plan premium plus small copays for visits. Often the lowest total in a low-use year. CLICK HERE TO GET YOUR COVERED CALIFORNIA 1095 AND EVEN HAVE IT SENT DIRECTLY TO YOUR TAX PRACTITIONER →
Takeaway: In a good year, Advantage and Original Medicare alone tend to be cheapest; Medigap costs more because you prepay for protection you may not use.
Moderate-Use Year (several specialists, imaging, an outpatient procedure)
Original Medicare alone: Part B deductible plus 20% coinsurance on a few thousand dollars of Part B services, often several hundred to low four figures, with no ceiling if the year worsens.
Original Medicare + Medigap Plan G: Premiums plus the Part B deductible; the supplement absorbs the coinsurance. Predictable, but the premium is the same whether you use care or not.
Medicare Advantage: Copays accumulate toward the MOOP but usually stay well below it. Total out-of-pocket typically lands between the low-use and high-use figures.
Takeaway: The paths converge. Advantage's copays climb toward its cap; Medigap's premium does the work; Original Medicare alone exposes you to uncapped coinsurance.
High-Use Year (hospital admission, surgery, follow-up care)
Original Medicare alone: Part A deductible per benefit period plus 20% coinsurance on the Part B portion of the care, with no annual ceiling. On a large bill, your share can run into the thousands or more, and it keeps climbing with the cost of care.
Medicare Advantage: Once in-network cost sharing hits the plan's MOOP (for example, $6,000), the plan pays 100% of covered in-network care for the rest of the year. Your worst case is the MOOP plus premiums, provided you stay in network and the services are covered.
Takeaway: The difference isn't which path is cheaper in a good year, but what happens in a bad one. Original Medicare alone leaves the top end open. Advantage closes it at a defined number, subject to network and coverage rules. Medigap closes it too, at the cost of a fixed premium.
Pro Tip Run your own version: list your expected services, find each plan's MOOP and copay schedule, and compare (premiums + expected cost sharing) against (premiums + MOOP) for a worst-case year. The plan with the lowest premium is rarely the plan with the lowest worst case.
Medigap Out-of-Pocket Costs and How They Change the Math
Medigap, also called Medicare Supplement, is private coverage that pays some or all of your Original Medicare cost sharing, effectively capping your exposure by absorbing the deductibles and coinsurance Original Medicare leaves you owing.
The trade-off is the premium: a monthly Medigap premium on top of your Part B premium, ongoing whether or not you use care. For a fuller side-by-side, see our comparison of Medicare Supplement versus Medicare Advantage.
Enrollment Timing and Underwriting Rules
Medigap is easiest to buy during your Medigap open enrollment window, which generally begins when you are 65 or older and enrolled in Part B. During that window, insurers generally cannot refuse you or charge more because of your health. Outside it, in most states, insurers can medically underwrite, so a health condition can mean a higher premium or a denial. Readers facing enrollment deadlines can find Medicare enrollment help near me.
Prescription Drug Costs and the Separate Part D Limit
Prescription drug coverage runs on its own track. Original Medicare does not include drug coverage, so you add a standalone Part D plan; Medicare Advantage plans often bundle it in.
That separation matters: reaching your medical cap doesn't stop your drug costs, and reaching your drug limit doesn't stop your medical cost sharing. Budget for both, and check each plan's formulary and pharmacy network, an uncovered drug can mean paying full cost yourself.
Which Coverage Fits Your Situation: A Decision Framework
Use a simple screen before comparing specific plans.
You want the widest provider access and predictable costs: Original Medicare plus Medigap, accepting the added premium.
You want a defined annual ceiling and lower monthly costs: Medicare Advantage, accepting network rules.
You have a serious diagnosis or expect high-cost care: weigh the Advantage MOOP against Medigap premiums carefully; both cap exposure, differently.
If you are still weighing the two structures side by side, our guide on how to choose between Original Medicare and Medicare Advantage goes deeper on the trade-offs.
Reviewing Your Medicare Options With an Independent Agency
Plan availability, MOOP amounts, and networks change every year, so compare current plans rather than last year's numbers. An independent agency can pull options from multiple carriers and match them to your doctors, prescriptions, and budget.
Newport Benefits is an independent agency with access to all major carriers and provides objective guidance tailored to individual needs and budgets. Newport Benefits Insurance Solutions offers employer group health insurance plans.
Frequently Asked Questions
Does Original Medicare have an out-of-pocket maximum?
No. Original Medicare (Part A and Part B) has no annual out-of-pocket maximum, so there is no point at which your cost sharing stops for the year. You continue paying deductibles, coinsurance, and copayments for covered services with no annual spending limit. The only way to cap that exposure is to add supplemental coverage, typically Medigap, or to enroll in a Medicare Advantage plan that carries its own maximum out-of-pocket limit.
What costs count toward a Medicare Advantage out-of-pocket maximum?
In general, your in-network cost sharing for covered Medicare Advantage plan benefits counts toward the MOOP: copayments, coinsurance, and deductibles for hospital stays, doctor visits, and other covered services. Costs that typically do not count include monthly premiums, prescription drug costs under the separate Part D limit, and services the plan does not cover. Out-of-network spending may count differently or not at all, so check the plan's Evidence of Coverage for the exact rules.
Does a Medicare Advantage out-of-pocket maximum include prescription drug costs?
Usually not. The MOOP applies to medical services covered under the plan, while prescription drugs fall under Part D, which has its own separate annual out-of-pocket limit. If your Medicare Advantage plan includes drug coverage (a MA-PD plan), the drug portion is tracked against the Part D limit, not the medical MOOP. That means your true worst-case annual exposure is the medical MOOP plus whatever you spend on drugs up to the Part D cap.
Can Medigap help cover Original Medicare out-of-pocket costs?
Yes. Medigap (Medicare Supplement) plans pay some or all of the cost sharing Original Medicare leaves behind, such as the Part A deductible, the Part B coinsurance, and hospital copayments, depending on the letter plan you choose. That reduces your exposure, but Medigap itself charges a monthly premium on top of your Part B premium.
Which may cost less: Medicare Advantage or Original Medicare with Medigap?
It depends on the plan and your circumstances.
The cost difference between these two paths is real, and it is decided by your health, your providers, and your tolerance for a worst-case year. Get started with Newport Benefits and compare Medicare plan options with guidance built around your situation, not a sales script.
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