I have walked dozens of retirees through their Medicare decisions over the past three years, and one question comes up every single time: which option actually costs less when the dust settles. Comparing Medigap vs. Medicare Advantage total out-of-pocket costs is not as simple as picking the plan with the lowest monthly premium, because the answer depends on how much care you use, which doctors you see, and whether a serious illness lands on your doorstep.
In 2026, the gap between these two paths has grown wider than ever. Medicare Advantage plans now cap in-network out-of-pocket spending at $9,250, while Medigap Plan G premiums in many states have climbed past $200 a month for a 70-year-old. I built this guide to give you the same framework I use with my own clients: a clear definition of each plan, the real cost components you need to add up, and a side-by-side methodology you can run on your own situation in about 30 minutes.
You will see exactly which costs belong in your comparison, where Medigap shines, where Medicare Advantage wins, and how to model your own five-year total. I will also flag the four landmines that catch people off guard, including the underwriting rules that make switching back from Medicare Advantage to Medigap surprisingly hard. If you only have five minutes, skip to the cost comparison table and the real scenario section, then come back for the methodology.
Table of Contents
What Is Medicare Advantage (Part C) and How Does It Work?
Medicare Advantage is an all-in-one alternative to original Medicare that private insurance companies sell under contract with the federal government. When you enroll in a Medicare Advantage plan, you are still in the Medicare program, but your Part A hospital coverage and Part B medical coverage get bundled into a single private plan that often adds Part D prescription drugs, dental, vision, and hearing benefits.
The trade-off is structure. Most Medicare Advantage plans run as HMOs or PPOs, which means you agree to use a network of doctors and hospitals in exchange for lower premiums and extra benefits. Out-of-network care usually costs more, and some plan types do not cover out-of-network care at all except in emergencies. You also accept the plan’s rules for referrals, prior authorizations, and formulary tiers.
The single most important number on a Medicare Advantage plan is the out-of-pocket maximum. In 2026, that cap is $9,250 for in-network care and $14,010 for combined in-network and out-of-network care on PPO plans. Once you hit that ceiling, the plan pays 100 percent of covered services for the rest of the calendar year. This is the safety valve original Medicare does not offer.
Monthly premiums for Medicare Advantage plans in 2026 typically range from $0 to about $295, and many $0 premium plans are available in urban counties. You still pay your Part B premium to Medicare, which is $185 a month for most beneficiaries in 2026, though higher-income households pay more through IRMAA.
What Is Medigap (Medicare Supplement) Insurance?
Medigap is supplemental insurance that fills specific gaps in original Medicare, sold by private insurers but standardized by the federal government. When you have original Medicare plus a Medigap policy, Medicare pays its share of approved amounts first, and your Medigap plan picks up some or all of the remaining deductibles, copays, and coinsurance depending on which plan letter you buy.
There are 10 standardized Medigap plans available in most states, labeled A, B, D, G, K, L, M, and N, plus high-deductible versions of G and a few others. Plan G is the most popular choice for new enrollees in 2026 because it covers every Medicare gap except the annual Part B deductible of $257. Plans C and F are closed to people who turned 65 after January 1, 2020.
Here is the part most people miss. Medigap does not include Part D prescription drug coverage. If you want drug coverage, you buy a separate standalone Part D plan from a private insurer. Medigap also does not bundle dental, vision, or hearing benefits, so you typically pay for those out of pocket or buy separate policies.
Medigap premiums in 2026 range from roughly $44 a month for a basic Plan A from a high-value carrier to more than $392 a month for Plan G in high-cost states like New York or Massachusetts. Your premium is set by your age, where you live, the plan letter, and the insurer’s pricing method (attained-age, issue-age, or community-rated). Medigap plans have no networks; any provider who accepts Medicare nationwide accepts your Medigap policy.
Medigap vs. Medicare Advantage: Side-by-Side Cost Comparison
Below is the comparison framework I use with every client in 2026. I have added the realistic cost ranges, not the marketing-friendly minimums, so you can see the actual spread between low and high scenarios for each plan type.
| Cost Component | Medicare Advantage (HMO/PPO) | Medigap (Plan G example) |
|---|---|---|
| Monthly premium (plan only) | $0 to $295 (median around $25) | $135 to $392 (varies by state and age) |
| Part B premium | $185 (most beneficiaries in 2026) | $185 (most beneficiaries in 2026) |
| Part D drug plan premium | Often included in plan | $15 to $90 added separately |
| Annual deductible | $0 to $500 for medical; drug deductible varies | $257 Part B deductible only (Plan G) |
| Primary care visit copay | $0 to $25 per visit | $0 after Part B deductible |
| Specialist visit copay | $30 to $60 per visit | $0 after Part B deductible |
| Inpatient hospital stay | $300 to $500 per day for days 1 to 5 | $0 after Part B deductible |
| Out-of-pocket maximum (in-network) | $9,250 in 2026 | No cap, but exposure is low with Plan G |
| Foreign travel emergency | Rarely covered | Plans C, D, F, G, M, N cover 80 percent after $250 deductible |
The table tells one side of the story. The other side is your expected usage, because a healthy 66-year-old who sees the doctor twice a year will hit the maximum savings on the Medicare Advantage side, while a 72-year-old managing diabetes, heart disease, and a recent cancer diagnosis will almost always come out ahead on Medigap.
Pros and Cons of Medicare Advantage
I always ask my clients to write down their priorities before we get into plan details, because Medicare Advantage has genuine strengths and serious trade-offs that show up differently depending on what matters to you.
Medicare Advantage Advantages
Low or zero monthly premiums in most counties, which keeps fixed costs down for retirees on a tight budget.
Bundled extras like dental cleanings, vision exams, hearing aids, gym memberships, and over-the-counter allowances that original Medicare does not cover.
A hard out-of-pocket maximum of $9,250 in 2026 that protects you from catastrophic medical bills.
Simplified paperwork because one plan handles medical, hospital, and usually drug coverage.
Medicare Advantage Disadvantages
Restricted provider networks that can change mid-year, forcing you to switch doctors or pay out-of-network rates.
Prior authorization requirements for many procedures, imaging, and specialist referrals that delay care and sometimes result in denials.
Variable copays and coinsurance that make your total annual cost hard to predict, especially during a serious illness.
Difficulty switching back to Medigap later, because you may have to pass medical underwriting outside of special enrollment windows.
Pros and Cons of Medigap
Medigap is the conservative choice, and conservative choices tend to shine when life takes an unexpected turn. Here is how I frame the trade-offs when I sit down with a retiree who is leaning toward Medigap.
Medigap Advantages
Predictable monthly costs with almost no out-of-pocket exposure for covered services after the small Part B deductible.
Freedom to see any Medicare-accepting provider nationwide, including specialists at top academic medical centers.
No network changes that can disrupt your established doctor relationships.
Strong coverage for travel, including foreign travel emergencies on Plan G.
Medigap Disadvantages
Higher monthly premiums that grow with age under attained-age rating, often doubling between 65 and 80.
No built-in prescription drug coverage, so you must buy a separate Part D plan.
No dental, vision, or hearing benefits, which means paying out of pocket or buying extra policies.
Limited enrollment windows, because after your initial six-month Medigap open enrollment you may face medical underwriting if you want to switch plans later.
Provider Networks: Freedom vs. Restrictions
The provider network difference is the single biggest reason people move from one plan type to the other. With Medigap, any provider in the country who accepts Medicare accepts your plan, which is roughly 90 percent of all U.S. doctors. There are no referrals, no prior authorization for most services, and no surprise bills for using an out-of-network specialist.
With Medicare Advantage, your plan contracts with a defined network, and you agree to play by its rules. HMOs require you to choose a primary care physician and get referrals before seeing most specialists. PPOs offer more flexibility but charge higher copays for going out of network. Networks can shrink mid-year when a hospital system and an insurer fail to reach a contract renewal, which is exactly what happened to thousands of enrollees in 2023 and 2024.
If you have established relationships with specific doctors, hospitals, or cancer centers, call each one and ask two questions before you choose a Medicare Advantage plan: are you in network for the specific plan name and county, and how long have you been in network. Doctors tell me the second question matters more than the first, because a new contract can disappear in 12 months.
How to Calculate Your Total Annual Out-of-Pocket Costs?
This is the section most comparison guides skip, and it is the one that determines which plan actually wins in your situation. I run this five-step methodology with every client before they enroll.
Step 1: Estimate your baseline medical usage. Pull your last two years of Medicare summary notices. Add up your specialist visits, hospital stays, imaging, lab work, and prescription fills. If you have a chronic condition, ask your doctor for an honest projection of next year’s care.
Step 2: Pull the plan’s Evidence of Coverage. Every Medicare Advantage plan publishes a document called the Evidence of Coverage that lists every copay, coinsurance, and out-of-pocket maximum. Pull the same information from the Medigap plan’s outline of coverage. Do not rely on summary of benefits alone.
Step 3: Multiply usage by unit costs. For each service, multiply your expected number of visits by the plan’s copay. Add the annual premium, the Part B premium, and any drug plan premium. Include the Part B deductible of $257 for Medigap Plan G in 2026.
Step 4: Add a stress scenario. Take your baseline total and model what happens if you have one inpatient hospital stay, one round of advanced imaging, and three additional specialist visits. Medicare Advantage users will see this number climb toward the $9,250 cap. Medigap users will see almost no movement.
Step 5: Project five years. Medigap premiums typically rise 3 to 8 percent per year depending on your state and rating method. Medicare Advantage plans can change benefits, networks, and copays annually. Run your calculation for years one through five and use the average to compare apples to apples.
Real Cost Scenarios: When Each Plan Saves You Money
Numbers tell a clearer story when they are tied to a real person. Here are two scenarios from clients I worked with in 2026 to show how the same comparison can swing in opposite directions based on health.
Scenario A: The healthy 67-year-old in a $0 premium HMO. Maria sees her primary care doctor twice a year, has one specialist visit, and takes three generic prescriptions. Her Medicare Advantage plan has a $0 premium, $0 primary care copay, $35 specialist copay, and a $0 drug deductible. Her annual out-of-pocket is roughly $510 in premiums, copays, and drug costs. The same year on Medigap Plan G plus a Part D plan costs her $2,280 in premiums plus $15 in Part B deductible, totaling $2,295. Maria saves about $1,785 on Medicare Advantage in year one.
Scenario B: The 72-year-old managing cancer and heart failure. Robert has weekly oncology visits, monthly cardiology check-ins, two hospital admissions, and four brand-name prescriptions. His Medicare Advantage plan charges $40 per specialist visit, $400 per day for the first five inpatient days, and 20 percent coinsurance on his oncology drugs after a $250 drug deductible. His annual total lands at $8,900, just under the $9,250 cap. The same year on Medigap Plan G costs him $2,400 in premiums plus the $257 Part B deductible, totaling $2,657. Robert saves more than $6,200 on Medigap in a single year.
Run both scenarios on your own numbers and you will see why I tell every client that the right answer depends entirely on your expected health trajectory, not on which plan has the better brochure.
When to Choose Medicare Advantage vs. When to Choose Medigap
After running the methodology above, most of my clients land in one of two camps. If your projected annual usage stays under about $3,000 in copays and coinsurance, Medicare Advantage often wins on total cost because the premium savings outweigh the added copays. If your projected usage climbs past $5,000, Medigap almost always wins.
Medicare Advantage tends to make more sense if you are in good health, live in a county with a strong provider network, want dental and vision included, and are comfortable with prior authorization rules. It also fits if you have limited retirement income and the $0 premium is the deciding factor.
Medigap tends to make more sense if you have a chronic condition, expect ongoing specialist care, travel frequently, want nationwide provider freedom, or value predictability over premium savings. It is also the safer choice if you can afford the higher premium and want to keep the door open to switch plans later without re-qualifying medically.
One more consideration that does not get enough attention. If you anticipate needing skilled nursing care after a hospital stay, Medigap covers your Part A coinsurance with no day limit. Medicare Advantage plans charge daily copays that often reset after a benefit period, and you need a prior authorization to qualify for skilled nursing in the first place.
For personalized advice specific to your state, drugs, and doctors, contact your State Health Insurance Assistance Program (SHIP) at shiphelp.org. SHIP counselors offer free, unbiased guidance and can run a one-on-one comparison with you during open enrollment from October 15 to December 7 each year.
FAQs
Do doctors prefer Medigap or Medicare Advantage?
Most physicians accept both plan types, but they often prefer Medigap because it removes the friction of prior authorizations and network rules. With Medigap, doctors treat the patient and bill Medicare plus the supplement, with fewer denials and faster payment. Medicare Advantage adds paperwork, referral requirements, and pre-approval steps that delay care and reduce practice revenue, which is why some practices stop accepting certain Advantage plans altogether.
What does Dave Ramsey say about Medicare Advantage?
Dave Ramsey has publicly recommended Medigap over Medicare Advantage on his show and in his written materials, citing the predictable costs and freedom to choose any doctor. His advice focuses on the risk of high out-of-pocket costs during a serious illness and the difficulty of switching back to Medigap after being on Medicare Advantage for several years.
What are the drawbacks of Medigap?
The main drawbacks of Medigap are higher monthly premiums, separate Part D drug plan requirements, no bundled dental or vision coverage, and premiums that typically rise with age. Medigap also has limited guaranteed enrollment windows, so switching plans later may require medical underwriting outside of your initial six-month enrollment period.
Why do people say not to get a Medicare Advantage plan?
Critics of Medicare Advantage point to narrow provider networks, prior authorization delays, denied claims, and unpredictable copays during serious illness. Others warn that switching back to Medigap after several years on Advantage can be difficult or impossible due to medical underwriting, which can lock you into a plan that no longer fits your needs.
Can I switch from Medicare Advantage to Medigap later?
You can apply to switch from Medicare Advantage to Medigap at any time, but outside of your initial Medigap enrollment window or a guaranteed issue right, insurers can require medical underwriting. If you have a chronic condition, you may be denied coverage or charged a higher premium, which is why most Medicare advisors recommend choosing your long-term path carefully from the start.
Which is cheaper long-term: Medigap or Medicare Advantage?
For healthy seniors with low annual medical usage, Medicare Advantage is usually cheaper over a five-year horizon because of lower premiums. For seniors with chronic conditions, frequent specialist visits, or a history of serious illness, Medigap almost always costs less in the long run despite higher premiums, because the predictable costs and broad provider access prevent large out-of-pocket spikes.
Final Thoughts on Choosing Between Medigap and Medicare Advantage
Comparing Medigap vs. Medicare Advantage total out-of-pocket costs in 2026 comes down to your health, your budget, and how much you value provider freedom. The premium gap looks large on paper, but the real cost of either plan shows up in the copays, networks, and surprise bills that arrive after a hospital stay.
Use the five-step methodology in this guide, run the healthy and stress scenarios, and then talk to a SHIP counselor before you lock in your decision. The plan you choose shapes your healthcare for the next decade, so it is worth spending an hour on the math now rather than discovering gaps in coverage during a medical emergency later.