Your Medigap Buyer’s Guide: Ranking the Best Supplemental Plans for 2026

If you’re approaching Medicare or re-evaluating your current coverage, there’s a good chance you’ve come across the alphabet soup of Medicare Supplement (Medigap) plans. It can feel overwhelming at first—but here’s the good news: nearly everyone ends up choosing from just three plans. Out of the ten standardized Medigap options available, Plan F, Plan G, and Plan N dominate the market for a reason. They strike the right balance between premium cost and out-of-pocket protection. At MedicareSchool.com, we help thousands of people each year navigate these choices—so you can feel confident that you’re making the right decision for your needs and budget. In this guide, we’ll walk through how these top three Medigap plans stack up in 2026, what kind of coverage they offer, how they differ, and when it makes sense to choose each one.

First, a Quick Refresher: What Is Medigap?

Medigap (also called Medicare Supplement insurance) is a type of coverage that works alongside Original Medicare (Parts A and B). It helps cover the “gaps”—those costs that Medicare doesn’t fully pay for, like hospital deductibles, coinsurance, and the 20% you’d otherwise owe for doctor visits, surgeries, and outpatient care. If you choose the Medigap path, you’ll also need to enroll in a separate Part D prescription drug plan, since Medigap policies don’t include drug coverage.

Why F, G, and N Are the Top Medigap Plans in 2026

Out of the ten lettered Medigap plans, the vast majority of people choose one of three: F, G, or N. Why? Because these three plans offer the most comprehensive coverage options—with different levels of flexibility and cost-sharing. Here’s a snapshot of how they compare:

Plan	Covers All Medicare Gaps?	Available to New Enrollees?	Copays?	Covers Excess Charges?	Monthly Premium
F	Yes	No (only for those eligible before 2020)	No	Yes	$$$
G	All but Part B deductible	Yes	No	Yes	$$
N	Most gaps	Yes	Yes (up to $20/visit)	No (you pay if billed)	$

Let’s break each one down in more detail.

Plan F: Maximum Coverage, Limited Availability

Plan F covers 100% of the gaps in Medicare. You’ll never see a bill for a covered service. This includes:

• The Part A hospital deductible
• The Part B deductible
• The 20% coinsurance for outpatient care
• Skilled nursing facility care
• Excess charges
• Foreign emergency travel (up to $50,000 lifetime)

  But here’s the catch: Plan F is only available to people who started Medicare before January 1, 2020. If that’s not you, you’ll need to look at Plan G or N. Even for those who are eligible, Plan F is usually the most expensive option. You’re paying for convenience—and while it’s great not to worry about bills, it may not be the best value anymore. Best for: Those who want full coverage and are eligible due to their Medicare start date.

Plan G: The Most Comprehensive Plan for Most People

Plan G is the top choice for people who started Medicare after 2020, and with good reason. It covers everything Plan F does, except for the Part B deductible, which is $283 in 2026. After you pay that once per year, you’re covered in full. There are no copays. You can see any provider who accepts Medicare, and you won’t need referrals or pre-authorizations. Pros of Plan G:

• Predictable and nearly complete coverage
• No pre-authorization headaches
• Portable across state lines
• No network restrictions

  Best for: Anyone who wants top-tier coverage with minimal out-of-pocket costs—and who isn’t eligible for Plan F. Plan N: Lower Premiums with Some Trade-Offs Plan N is a popular alternative for people who want good coverage but are okay with a little more cost-sharing to save on monthly premiums. With Plan N, you’ll still be fully covered for big-ticket items like hospital stays, surgeries, and skilled nursing. But you’ll pay:

• The annual Part B deductible
• Up to $20 per office visit
• A $50 copay for ER visits (if you’re not admitted)
• Any Part B excess charges (if your doctor doesn’t accept Medicare’s standard rates)

  Still, most people find these added costs rare—and the premium savings significant. Best for: Healthy individuals who don’t mind a few small copays and want to lower their monthly costs.

What About the Other Plans?

Technically, there are ten Medigap plans. But the others—like Plans A, B, K, L, and M—are rarely chosen because they either offer very limited coverage or don’t strike a good balance of price and protection. Plans C and F are only available to people who were eligible before 2020, which further narrows the field. That’s why F, G, and N are the only three plans most people ever need to consider.

When to Enroll: Don’t Miss Your Medigap Open Enrollment Window

The best time to buy a Medigap policy is during your six-month Medigap Open Enrollment Period. This window starts the month your Medicare Part B goes into effect, and during this time:

• You can enroll in any Medigap plan without medical underwriting
• You can’t be denied for pre-existing conditions
• You’ll receive the best possible pricing and access

  After this window, most people will need to go through medical underwriting if they want to switch plans. That means your health history will be reviewed, and you could be denied or charged more.

Can You Switch Medigap Plans Later?

Yes—but it’s more complicated. Outside your initial enrollment window, you’ll need to medically qualify to switch Medigap plans in most states. This process includes health questionnaires and a review of your current prescriptions. If your health has changed, it could limit your options. A few states (like California, Oregon, New York, and Connecticut) have special rules allowing you to change plans more easily during certain times of year. But for most people, your first enrollment window is your best shot at securing the plan you want—at the best possible price.

Choosing the Right Plan for You

If you want a simple way to think about it:

• Choose Plan F if you’re eligible and value full coverage, regardless of premium.
• Choose Plan G if you want broad coverage with only a small annual deductible.
• Choose Plan N if you’re healthy, budget-conscious, and don’t mind some copays.

  All three plans provide strong coverage and freedom to see any doctor or hospital that accepts Medicare.

Still unsure? That’s where we come in.

At MedicareSchool.com, our licensed advisors can help you compare pricing across dozens of insurance carriers—all offering the exact same plan benefits—so you don’t overpay for coverage you can get elsewhere for less. Call us at (800) 864-8890 or book your free Medigap plan review here. Choosing the right plan could save you hundreds per year—and give you peace of mind for decades to come. You’ve worked hard to get here, let’s make sure you have a plan that works hard for you.