Choosing between Medicare Advantage and Medicare Supplement (Medigap) is one of the most important decisions you will make as a new Medicare beneficiary. Both options build on Original Medicare, but they work in fundamentally different ways, and the financial stakes in 2026 are higher than ever with rising premiums and deductibles.
This guide breaks down the key differences between Medicare Advantage and Medicare Supplement plans in 2026, including updated costs, coverage details, and a clear decision framework so you can make an informed choice.
Understanding the Basics: Two Different Approaches to Medicare Coverage
Before comparing costs and benefits, it helps to understand how each plan type works within the broader Medicare system.
Medicare Supplement (Medigap) is a private insurance policy that pairs with Original Medicare (Parts A and B). You keep Original Medicare as your primary coverage, and Medigap fills in the “gaps,” covering costs like deductibles, copayments, and coinsurance that Original Medicare does not pay.
Medicare Advantage (Part C) is an alternative to Original Medicare. When you enroll in a Medicare Advantage plan, a private insurance company delivers all your Part A and Part B benefits through their own network. Most Medicare Advantage plans also include prescription drug coverage and may offer extras like dental, vision, and hearing.
2026 Medicare Costs You Need to Know
Understanding the baseline costs of Original Medicare is essential because both Medicare Advantage and Medigap build on these numbers. Here are the official 2026 Medicare costs from CMS:
- Part B monthly premium: $202.90 (up from $185.00 in 2025)
- Part B annual deductible: $283 (up from $257 in 2025)
- Part A inpatient hospital deductible: $1,736 per benefit period (up from $1,676 in 2025)
- Part A daily coinsurance (days 61-90): $434 per day
- Part A skilled nursing facility coinsurance (days 21-100): $217 per day
These rising costs make supplemental coverage more important than ever. Without additional insurance, a single hospital stay could cost you thousands of dollars out of pocket.
Medicare Advantage in 2026: What You Get
Medicare Advantage plans are offered by private insurers approved by Medicare. In 2026, approximately 54% of all Medicare beneficiaries are enrolled in Medicare Advantage plans, reflecting their growing popularity.
Key Features of Medicare Advantage
- Low or $0 monthly premiums: Many Medicare Advantage plans charge no additional premium beyond your standard Part B premium of $202.90
- Maximum out-of-pocket (MOOP) limit: In 2026, the in-network MOOP cap is $9,350, meaning your annual costs are capped (Original Medicare has no such cap)
- Extra benefits: Most plans include prescription drug coverage (Part D), and many add dental, vision, hearing, fitness programs, and even meal delivery after hospital stays
- Network-based care: Most plans use HMO or PPO networks, requiring you to see doctors and hospitals within the plan’s network for full coverage
- Prior authorization: Some services may require plan approval before you receive them
Potential Drawbacks
- Provider restrictions: You must use in-network providers in most HMO plans (PPOs offer some out-of-network coverage at higher cost)
- Geographic limitations: Plans are tied to specific service areas, which can be a problem if you travel frequently or split time between states
- Variable costs per service: You pay copays and coinsurance for each doctor visit, test, or procedure, which can add up quickly during a serious illness
- Prior authorization delays: Needing plan approval can slow down access to certain treatments or specialists
Medicare Supplement (Medigap) in 2026: What You Get
Medigap policies are standardized by the federal government, meaning Plan G from one company covers the same benefits as Plan G from another. The only differences between companies are price, customer service, and financial stability.
Key Features of Medigap
- Predictable costs: After paying your monthly premium, you have little to no out-of-pocket costs for Medicare-covered services
- Freedom to choose providers: You can see any doctor or hospital in the country that accepts Medicare, with no network restrictions
- No referrals needed: See any specialist directly without getting a referral from a primary care physician
- Nationwide coverage: Your plan works anywhere in the United States, making it ideal for travelers and snowbirds
- Guaranteed renewable: Your policy cannot be cancelled as long as you pay your premiums, regardless of health changes
Potential Drawbacks
- Higher monthly premiums: Medigap premiums typically range from $100 to $300+ per month depending on your age, location, and plan type, on top of your Part B premium
- No prescription drug coverage: You must purchase a separate Medicare Part D plan for drug coverage
- No extra benefits: Medigap does not include dental, vision, or hearing coverage
- Underwriting after initial enrollment: If you do not sign up during your Medigap Open Enrollment Period (the 6 months after you turn 65 and enroll in Part B), insurance companies in most states can charge higher rates or deny coverage based on health conditions
Side-by-Side Comparison: Medicare Advantage vs. Medigap in 2026
| Feature | Medicare Advantage | Medicare Supplement (Medigap) |
|---|---|---|
| Monthly Premium | Often $0 (plus $202.90 Part B) | $100-$300+ (plus $202.90 Part B) |
| Out-of-Pocket Maximum | Yes, up to $9,350 in-network (2026) | Varies by plan (Plan G: $283/year Part B deductible only) |
| Doctor/Hospital Choice | Network-based (HMO/PPO) | Any Medicare-accepting provider nationwide |
| Referrals Required | Usually yes (HMO), no (PPO) | No |
| Prescription Drugs | Usually included | Separate Part D plan required |
| Dental/Vision/Hearing | Often included | Not included |
| Travel Coverage | Limited (in service area only) | Nationwide (Plans C, D, F, G, M, N include foreign travel) |
| Best For | Budget-conscious, generally healthy beneficiaries who stay local | Beneficiaries who want predictable costs and provider freedom |
The Cost Question: Which Plan Type Saves You More Money?
This is the question most new Medicare beneficiaries ask first, and the honest answer is: it depends on your health and how much care you use.
If You Are Generally Healthy
Medicare Advantage may cost less in the short term. With a $0 premium plan, your only monthly expense is the $202.90 Part B premium. You will pay small copays for doctor visits and services, but these are manageable for routine care.
If You Have Chronic Conditions or Need Frequent Care
Medigap often provides better financial protection. With Plan G (the most popular Medigap plan in 2026), your only out-of-pocket cost for Medicare-covered services is the $283 annual Part B deductible. After that, Plan G covers 100% of your Medicare-approved costs for the rest of the year.
Compare that to Medicare Advantage, where copays of $20-$50 per specialist visit, 20% coinsurance for outpatient surgery, and daily hospital copays can push your total costs toward the $9,350 out-of-pocket maximum during a serious health event.
A Real-World Cost Example for 2026
Consider a Medicare beneficiary who has a 5-day hospital stay, three specialist visits, and an outpatient procedure during the year:
- With Medigap Plan G: $283 (Part B deductible) + approximately $150/month Medigap premium = roughly $2,083 total annual cost (beyond Part B premiums)
- With Medicare Advantage: Hospital copays + specialist copays + procedure coinsurance could total $3,000-$6,000+, depending on the plan
For healthy years, Medicare Advantage costs less. For years with significant medical needs, Medigap usually wins.
What Changed for 2026: Key Updates to Know
Several important changes affect both plan types in 2026:
- Part B premium increase: The standard premium rose to $202.90/month, a $17.90 increase that affects both Medicare Advantage and Medigap enrollees
- Higher Part A deductible: At $1,736 per benefit period, this makes Medigap coverage of the Part A deductible more valuable
- Part D redesign impact: The Inflation Reduction Act caps annual out-of-pocket drug costs at $2,000, benefiting both plan types but especially those with standalone Part D paired with Medigap
- Medicare Advantage network changes: Some insurers have narrowed their provider networks for 2026. Check that your preferred doctors remain in-network before choosing or staying with a plan
- Medigap rate trends: Medigap premiums have been rising 3-8% annually in many states. Shopping among carriers during enrollment windows can save you money without changing your coverage
Who Should Choose Medicare Advantage in 2026?
Medicare Advantage may be the right choice if you:
- Want to keep your monthly costs as low as possible
- Are comfortable using a network of doctors and hospitals
- Value having dental, vision, and hearing coverage included
- Do not travel frequently or split time between different states
- Are generally healthy and do not anticipate significant medical expenses
- Prefer an all-in-one plan that bundles medical and drug coverage
Who Should Choose Medicare Supplement in 2026?
A Medigap policy may be the better fit if you:
- Want the freedom to see any doctor or specialist who accepts Medicare
- Travel frequently, live in multiple states, or spend winters in a different region
- Have chronic health conditions that require regular specialist visits or hospitalizations
- Prefer predictable monthly costs with minimal surprises
- Are willing to pay a higher monthly premium in exchange for comprehensive coverage
- Want the peace of mind that comes with knowing almost all your medical costs are covered
Can You Switch Between Medicare Advantage and Medigap?
Switching between these plan types is possible, but there are important restrictions to understand:
- Medicare Advantage to Medigap: If you leave a Medicare Advantage plan and return to Original Medicare, you may need to pass medical underwriting to get a Medigap policy (unless you qualify for a guaranteed issue right). In most states, insurance companies can deny coverage or charge higher premiums based on your health status.
- Medigap to Medicare Advantage: You can switch to Medicare Advantage during the Annual Enrollment Period (October 15 through December 7) or during a valid Special Enrollment Period.
- Trial right: If you enrolled in a Medicare Advantage plan for the first time when you were first eligible for Medicare and you drop it within 12 months, you have a guaranteed right to buy any Medigap policy sold in your state.
This asymmetry is one of the most important factors in your decision. Once you leave Medigap for Medicare Advantage, getting back to Medigap at a reasonable price may be difficult if your health has changed. For a detailed walkthrough of the entire process, see our step-by-step guide to switching from Medicare Advantage to Medigap.
Frequently Asked Questions
Is Medicare Advantage or Medicare Supplement cheaper in 2026?
Medicare Advantage typically has lower monthly premiums (often $0 beyond your Part B premium of $202.90), but higher out-of-pocket costs when you use healthcare services. Medicare Supplement has higher monthly premiums ($100-$300+) but much lower costs when you need care. For healthy years, Medicare Advantage costs less. For years with significant medical needs, Medigap usually provides better financial protection.
Can I have both Medicare Advantage and a Medigap policy at the same time?
No. Federal law prohibits having both Medicare Advantage and Medigap coverage simultaneously. You must choose one approach or the other. If you have Medigap and want Medicare Advantage, you would drop your Medigap policy. If you leave Medicare Advantage for Original Medicare, you would then apply for Medigap.
What is the most popular Medigap plan in 2026?
Plan G is the most popular Medicare Supplement plan in 2026. It covers nearly all out-of-pocket costs associated with Original Medicare, with the only exception being the annual Part B deductible ($283 in 2026). Plan G replaced Plan F as the top choice after Plan F was closed to new enrollees in 2020.
Do Medicare Advantage plans cover prescription drugs?
Most Medicare Advantage plans include prescription drug coverage (these are called MA-PD plans). If you choose Medigap instead, you need to purchase a separate Medicare Part D prescription drug plan. The 2026 Part D redesign caps annual out-of-pocket drug costs at $2,000 for both standalone Part D and Medicare Advantage drug plans.
What happens if I move to a different state with Medicare Advantage?
Medicare Advantage plans are tied to specific geographic service areas. If you move out of your plan’s service area, you qualify for a Special Enrollment Period to choose a new plan in your new location. With Medigap, your coverage travels with you anywhere in the United States since it works with Original Medicare’s nationwide provider network.
When is the best time to enroll in a Medigap plan?
The best time to enroll is during your Medigap Open Enrollment Period, which lasts 6 months starting the month you turn 65 and are enrolled in Medicare Part B. During this window, insurance companies cannot deny you coverage or charge more based on pre-existing conditions. After this period, you may face medical underwriting in most states.