Full answer: It depends. There is no single nationally 'most expensive' Medicare Advantage plan because CMS approves thousands of plans separately by county, and premiums, drug costs, and out-of-pocket maximums all vary by insurer and service area. In 2026, 67% of Medicare Advantage plans charge no monthly premium, while Regional PPOs average $89 a month, the highest average of any plan type, and about 3% of enrollees pay $100 or more monthly. Even a $0-premium plan can end up being the pricier choice in practice if it carries the maximum allowed out-of-pocket limit, $9,250 in-network or $13,900 combined in 2026, and a thin drug formulary.
Nearly 34 million Americans are enrolled in a Medicare Advantage plan in 2026, and premiums for those plans range from $0 a month to well over $100, depending on the plan type, insurer, and county. There is no single 'most expensive' Medicare Advantage plan nationally, because CMS approves thousands of plans separately by service area, and the sticker price on a premium is only part of the real cost.
Medicare Advantage shoppers rarely realize that plan type, not the premium alone, predicts total cost. This guide breaks down which Medicare Advantage plan types actually cost the most in 2026, what the $9,250 in-network out-of-pocket maximum means for your wallet, and how to avoid picking an expensive plan by accident. For plan-switching rules, see can I switch from Medicare Advantage to Original Medicare. If you're comparing extra benefits, check does Medicare Advantage cover dental.
Coverage Breakdown
Coverage by type| Plan Type | Average 2026 Premium | Typical Out-of-Pocket Max (2026) | Why the Cost Differs |
|---|
| Zero-premium Medicare Advantage (HMO or PPO) | $0/month beyond the standard 2026 Part B premium | Up to $9,250 in-network | 67% of MA-PD plans charge $0 because CMS pays the insurer per enrollee, not the member |
| HMO | $12/month average across all HMO enrollees (2026) | Averages $4,636 in-network | Narrower provider networks keep the average premium low |
| Local PPO | $18/month average across all local PPO enrollees (2026) | Averages $9,825 combined | Wider out-of-network access raises the average premium |
| Regional PPO | $89/month average, the highest of any plan type (2026) | Can reach $13,900 combined | A smaller enrollee pool spread across a wide multi-county area pushes premiums up |
| Any plan that charges a premium | $59/month average among the 25% of enrollees who pay one (2026) | Varies by plan | Usually paired with richer extras like dental, vision, hearing, or an over-the-counter allowance |
All figures include the standard 2026 Medicare Part B premium of $202.90 a month, which every Medicare Advantage enrollee pays regardless of their plan's own premium. Figures are enrollment-weighted averages from CMS's 2026 Medicare Advantage Landscape data.
Source: CMS 2026 Medicare Advantage Landscape File; KFF, Medicare Advantage in 2026: Premiums, Out-of-Pocket Limits, Supplemental Benefits, and Prior Authorization
Direct Answer
It depends. No single Medicare Advantage plan is universally the most expensive, because CMS approves separate plans by county and premiums vary by insurer and location. In 2026, 67 percent of Medicare Advantage plans charge no premium, while Regional PPOs average $89 a month, the highest of any plan type, and about 3 percent of enrollees pay $100 or more monthly. A $0 premium plan can still end up pricier overall if it carries the maximum $9,250 in-network out-of-pocket limit.
What Actually Drives Medicare Advantage Costs Up
Three numbers determine whether a Medicare Advantage plan turns out to be expensive: the monthly premium, the maximum out-of-pocket limit, and the prescription drug formulary. A plan advertising a $0 premium can still cost thousands more per year than a plan with a $50 premium if it has a higher out-of-pocket maximum or puts your medications on an expensive drug tier. Extra benefits like dental, vision, hearing aids, and over-the-counter allowances also drive premiums higher when insurers price them into the plan rather than fully subsidizing them with CMS payments.
- Monthly premium (2026 average: $14 across all enrollees, but $59 among the 25% who pay one)
- Out-of-pocket maximum (2026 ceiling: $9,250 in-network, $13,900 combined)
- Prescription drug deductible and formulary tier pricing (2026 Part D out-of-pocket cap: $2,100)
- Supplemental premiums for dental, vision, hearing, and fitness extras
- Star Rating and network size, which affect both access and cost-sharing
Original Medicare vs. Medicare Advantage: Which Costs More in 2026
Original Medicare (Medicare Part A and Medicare Part B) has no annual out-of-pocket maximum at all: a serious hospitalization or cancer treatment can generate unlimited cost-sharing unless you add a Medigap policy or a Medicare Part D drug plan. In 2026, the Part A inpatient deductible is $1,736 per benefit period and the Part B deductible is $283, plus a standard Part B premium of $202.90 a month and 20% coinsurance on most Part B services with no cap.
Medicare Advantage plans must cap total in-network cost-sharing at $9,250 in 2026, which is the tradeoff for narrower networks and prior authorization requirements. Medicare itself isn't subject to the ACA's essential health benefits mandate that applies to marketplace plans, but every Medicare Advantage plan must still cover everything Original Medicare covers. Unlike ACA-compliant marketplace plans, Medigap medical underwriting outside your Medigap open enrollment window can deny coverage for a preexisting condition, which is why Original Medicare plus Medigap isn't always the cheaper path either.
The Real Cost Driver Is Usually the Out-of-Pocket Maximum, Not the Premium
CMS caps Medicare Advantage out-of-pocket maximums at $9,250 for in-network care and $13,900 combined in 2026, down $100 from 2025's ceiling. The enrollment-weighted average plan actually sets its limit lower, $5,421 in-network and $9,825 combined for PPOs, but some of the priciest plans in high-cost markets sit right at the regulatory ceiling. A plan hitting that maximum is functionally more expensive than a $50-premium plan with a $3,000 out-of-pocket cap for anyone who needs significant care during the year.
Prescription drugs add a separate layer. Medicare Part D's out-of-pocket cap is $2,100 in 2026 under the Inflation Reduction Act, and insulin is capped at $35 a month. A Medicare Advantage plan with a weak drug formulary, meaning your specific medications sit on a high cost-sharing tier, can push your real annual cost well past what the premium alone suggests, even with the Part D cap in place.
How to Avoid Picking the Most Expensive Plan by Accident
General Medicare Advantage eligibility only requires that you are enrolled in Medicare Part A and Medicare Part B and live in the plan's service area, so nearly every plan in your county is technically available to you, including the expensive ones. The Medicare Plan Finder at medicare.gov lets you enter your prescriptions and preferred doctors, then ranks plans by estimated total annual cost, not just the sticker premium, which is the number that actually predicts whether a plan will be expensive for you personally.
- Enter every prescription drug you take, including dosage, into the Medicare Plan Finder before comparing plans
- Check the out-of-pocket maximum, not just the premium, for each plan you're considering
- Confirm your doctors and hospitals are in-network before enrolling
- Review the plan's Star Rating; 4 and 5-star plans have special mid-year enrollment options
- Call 1-800-MEDICARE or your State Health Insurance Assistance Program (SHIP) for a free plan comparison
Cost Without Any Medicare Advantage or Supplemental Coverage in 2026
Someone with only Original Medicare and no Medigap policy, no Medicare Advantage plan, and no Medicare Part D drug coverage faces the least protected cost picture in Medicare. A single hospital stay triggers the $1,736 Part A deductible per benefit period, Part B services carry 20% coinsurance with no annual cap, and prescription drugs are paid entirely out of pocket at retail price. For a beneficiary managing a chronic condition, that combination can easily exceed $10,000 to $15,000 in a single year, far more than even the priciest Medicare Advantage plan's out-of-pocket maximum.
Alternatives If You Want to Avoid High Medicare Advantage Costs
A Medigap (Medicare Supplement) policy paired with Original Medicare and a standalone Medicare Part D plan eliminates the cost-sharing unpredictability of Medicare Advantage, though Medigap premiums themselves run $100 to $300 or more a month depending on your state and the plan letter you choose. For beneficiaries with limited income, the Medicare Savings Program and Extra Help (the Part D Low-Income Subsidy) can eliminate premiums and cost-sharing almost entirely on Original Medicare, often making that combination cheaper than any Medicare Advantage plan.
- Medigap Plan G or Plan N paired with a standalone Part D plan for predictable Original Medicare cost-sharing
- Medicare Savings Programs (QMB, SLMB, QI) for beneficiaries under state income limits
- Extra Help / Low-Income Subsidy for Part D premiums and copays
- Dual-eligible Special Needs Plans (D-SNPs) if you also qualify for Medicaid
- Your State Health Insurance Assistance Program (SHIP) for free, unbiased plan comparison help
Frequently Asked Questions
What is the average cost of a Medicare Advantage plan in 2026?
CMS estimates the average monthly premium across all Medicare Advantage enrollees is $14 in 2026, down from $16.40 in 2025. That average blends the 67% of plans that charge no premium with the smaller share that do. Among only the plans that charge a premium, about 25% of enrollees, the average runs $59 a month. Your actual premium depends on the specific plan and county you're comparing.
Which type of Medicare Advantage plan has the highest premium?
Regional PPOs have the highest average premium among Medicare Advantage plan types in 2026, at $89 a month, compared with $12 for HMOs and $18 for local PPOs. Regional PPOs cover a wider multi-county or multi-state service area with fewer enrollees to spread costs across, which tends to push premiums higher than narrower-network HMO plans.
Can a $0-premium Medicare Advantage plan still be expensive?
Yes. A $0-premium plan can carry the maximum allowed out-of-pocket limit, $9,250 in-network in 2026, and place your specific medications on a high-cost drug tier. If you need significant care during the year, that plan can end up costing far more out of pocket than a plan with a modest monthly premium but a lower out-of-pocket cap and better drug coverage.
What is the Medicare Advantage out-of-pocket maximum for 2026?
CMS caps Medicare Advantage plans at $9,250 for in-network services and $13,900 for combined in-network and out-of-network services in 2026, both down $100 from 2025. The enrollment-weighted average plan sets its limit lower than the ceiling, around $5,421 in-network, but plans in high-cost markets often sit closer to the maximum allowed.
Is Original Medicare cheaper than Medicare Advantage?
It depends on your health needs. Original Medicare has no out-of-pocket maximum, so a major hospitalization or cancer treatment can generate unlimited cost-sharing without a Medigap policy. Medicare Advantage plans cap total in-network costs at $9,250 in 2026. For someone who rarely uses care, Original Medicare's lower baseline costs can win; for someone managing a serious chronic condition, Medicare Advantage's cap often protects more.
What alternatives exist if Medicare Advantage costs too much?
Medigap paired with a standalone Medicare Part D plan removes most cost-sharing unpredictability, though Medigap premiums themselves run $100 to $300 or more monthly. Beneficiaries with limited income may qualify for a Medicare Savings Program or Extra Help, which can eliminate premiums and cost-sharing almost entirely. A dual-eligible Special Needs Plan is another option for anyone who also qualifies for Medicaid.
Do Special Needs Plans cost more than regular Medicare Advantage plans?
Not necessarily. Most Dual Eligible Special Needs Plans (D-SNPs) charge $0 premium because the enrollee's state Medicaid program covers the cost-sharing. Chronic-condition (C-SNP) and institutional (I-SNP) plans are typically priced similarly to standard Medicare Advantage plans available in the same county; premium level depends more on plan type and location than on SNP status alone.
How can I compare Medicare Advantage plan costs before enrolling?
Use the Medicare Plan Finder at medicare.gov, enter every prescription you take, and let it rank plans by estimated total annual cost rather than premium alone. Also check each plan's out-of-pocket maximum, confirm your doctors and hospitals are in-network, and call 1-800-MEDICARE or your State Health Insurance Assistance Program (SHIP) for a free, unbiased comparison before the Annual Enrollment Period ends December 7.
