Medicare Advantage vs. Medigap: Which Is Better in 2026?

After 17 years helping Florida seniors choose Medicare coverage, I can tell you this: the Medicare Advantage vs. Medigap decision is the single most consequential choice you will make when you turn 65. Get it right and you save thousands. Get it wrong and you could be stuck with unexpected bills or locked out of the coverage you actually need.

There is no universal right answer. But there is a right answer for you -- and I am going to help you find it.

Medicare Advantage (Part C) replaces Original Medicare. A private insurance company manages your coverage, usually through an HMO or PPO network. You pay a monthly premium (often $0), but you pay copays and coinsurance every time you use care. Your costs are capped by an annual out-of-pocket maximum -- in 2026, that cap can be as high as $9,350 for in-network care.

Medigap (Medicare Supplement) works alongside Original Medicare. You keep Original Medicare as your primary coverage, and Medigap pays most or all of the gaps -- deductibles, coinsurance, and copays. You pay a higher monthly premium, but your out-of-pocket costs at the doctor or hospital are minimal or zero.

Medicare Advantage is a good fit if:

• You are relatively healthy and do not use a lot of medical services
• You want $0 or low premiums and are comfortable with copays when you do use care
• You have specific doctors who are in-network for the plan you are considering
• You want extra benefits like dental, vision, hearing, and gym memberships
• You stay in one area and do not travel frequently

In Florida, many Medicare Advantage plans offer $0 premiums with strong networks. For a healthy 65-year-old who sees a primary care doctor twice a year, the math often favors Advantage.

Medigap is the better choice if:

• You have chronic conditions -- heart disease, diabetes, COPD, cancer -- that require frequent care
• You want freedom to see any doctor without worrying about networks
• You travel frequently or split time between states (snowbirds, this means you)
• You want predictable costs and cannot afford a surprise $5,000-$9,000 bill
• You are planning ahead for a major surgery or ongoing treatment

With Medigap Plan G, once you pay the Part B deductible ($283 in 2026), Medicare and your supplement cover essentially everything else. Your monthly costs are predictable. Your access is unlimited.

The $0 premium is real. But so are the costs you pay when you actually use care.

A typical Medicare Advantage scenario for a senior with a serious illness:

• Hospital stay: $350-$500/day copay for days 1-6
• Specialist visits: $40-$60 per visit
• Outpatient surgery: 20% coinsurance
• Physical therapy: $30-$50 per visit

If you have a bad year -- a hip replacement, a cancer diagnosis, a cardiac event -- you could hit the full $9,350 out-of-pocket maximum. That is real money.

With Medigap Plan G, that same scenario costs you $283 (the Part B deductible) plus your monthly premium. That is it.

Medigap is not free either. The higher monthly premium adds up.

At $150/month, Medigap Plan G costs $1,800/year more than a $0-premium Advantage plan. Over 10 years, that is $18,000 in premiums -- assuming rates do not increase (they do).

If you stay healthy and rarely use care, you may pay more in Medigap premiums than you would have paid in Advantage copays.

The break-even point is roughly one significant health event every 2-3 years.

Here is something most people do not know: if you enroll in Medicare Advantage first and later want to switch to Medigap, you may be denied.

In Florida, Medigap insurers can use medical underwriting outside of your initial enrollment window. If you have developed diabetes, heart disease, or any other chronic condition since you first enrolled in Medicare, you may be rated up, charged more, or flat-out denied a Medigap policy.

Your guaranteed-issue window is when you first turn 65 and enroll in Part B. That is the only time you are guaranteed the right to buy any Medigap plan at standard rates, regardless of your health.

This is the most important reason to think carefully before choosing Medicare Advantage at 65.

I do not have a financial incentive to push you toward one or the other -- I am paid the same commission either way. Here is my honest take:

If you are healthy at 65 and budget is a concern, Medicare Advantage can work well. Just make sure your doctors are in-network and you understand the out-of-pocket maximum.

If you have any chronic conditions, travel frequently, or simply want peace of mind, Medigap Plan G is worth the higher premium. The freedom and predictability are worth it.

If you are on the fence, lean toward Medigap while you have guaranteed-issue rights. You can always switch to Advantage later (during Annual Enrollment Period). Switching the other direction is much harder.

I am an independent broker licensed in Florida. I represent every major Medicare Advantage and Medigap carrier -- Humana, Florida Blue, UnitedHealthcare, Aetna, Cigna, Mutual of Omaha, and more.

I will run the numbers for your specific situation, your doctors, your prescriptions, and your budget -- and give you an honest recommendation.

Call me at (386) 871-3858 or schedule a free consultation. There is no pressure and no cost.

William Gray is an independent Medicare insurance broker serving Florida seniors. FL License W690237.