How to Choose a Medicare Supplement Plan in 2026

If you’re approaching 65 – or already there – you’ve probably heard the word Medigap tossed around more than once. Choosing the right Medicare Supplement plan can feel overwhelming, but it doesn’t have to be. With a little guidance, you can find a plan that fits both your health needs and your budget. This guide walks you through everything you need to know about how to choose a Medicare supplement plan in 2026.

What Is a Medicare Supplement Plan (Medigap)?

Original Medicare – Parts A and B – covers a lot, but it doesn’t cover everything. You’re still responsible for deductibles, copayments, and coinsurance. That’s where Medicare Supplement Insurance, commonly called Medigap, comes in.

Medigap policies are sold by private insurance companies and are designed to fill the “gaps” in Original Medicare coverage. They help pay for out-of-pocket costs like hospital stays, skilled nursing facility care, and medical services – giving you more predictable healthcare expenses.

To be eligible for a Medigap policy, you must be enrolled in both Medicare Part A and Part B. Medigap plans do not work with Medicare Advantage (Part C).

Understanding the Medigap Plan Letters: A, B, D, G, K, L, M, and N

Medigap plans are standardized by the federal government and labeled with letters. Each lettered plan offers a defined set of benefits – no matter which insurance company sells it. Here’s a quick breakdown of the plans available in 2026:

Plan	Key Benefits	Best For
Plan A	Basic benefits: hospital coinsurance, Part B coinsurance, first 3 pints of blood, hospice coinsurance	Healthiest seniors seeking minimal coverage
Plan B	Plan A benefits + Medicare Part A deductible	Those wanting basic coverage with hospital protection
Plan D	Plan B benefits + skilled nursing facility coinsurance + foreign travel emergency (80%)	Those who want solid mid-tier coverage
Plan G	Most comprehensive (except Part B deductible): covers Part A deductible, excess charges, foreign travel	Most popular for comprehensive coverage
Plan K	Cost-sharing plan – covers 50% of many benefits; lower premiums	Healthy seniors willing to share costs
Plan L	Like Plan K but covers 75% of cost-sharing; moderate premiums	Seniors wanting a middle ground
Plan M	Covers 50% of Part A deductible; includes skilled nursing + foreign travel	Those who prefer lower premiums
Plan N	Covers most costs with small copays ($20 office visits, $50 ER); lower premiums than Plan G	Relatively healthy seniors wanting solid coverage at lower cost

Note: Plans C and F are no longer available to those who became eligible for Medicare on or after January 1, 2020.

How to Compare Medicare Supplement Plans

Once you understand what each plan covers, the real work begins: finding the right fit for you. Here’s how to approach the comparison:

1. Start With Your Health Needs

Think about how often you visit doctors, whether you’ve had major health events in the past, and if you take prescription drugs regularly. If you see specialists often or have chronic conditions, a more comprehensive plan like Plan G may save you money in the long run even if the premiums are higher.

2. Compare Premiums Across Insurance Companies

Because plans are standardized, the benefits are identical across companies – but the premiums can vary significantly. Use Medicare’s Plan Finder tool at medicare.gov or contact a licensed insurance broker to get quotes from multiple companies.

3. Understand How Premiums Are Priced

Insurance companies use three methods to set Medigap premiums:

• Community-rated: Everyone pays the same premium regardless of age
• Issue-age-rated: Premium is based on your age when you buy – younger means lower
• Attained-age-rated: Premium increases as you get older – can get expensive over time

Ask each company how they price their premiums before enrolling.

4. Check the Insurer’s Financial Strength

You want a company that will be around when you need them. Look up ratings from A.M. Best, Moody’s, or Standard & Poor’s. Stick with carriers rated “A” or better.

5. Consider Your Open Enrollment Window

Your best opportunity to buy Medigap without medical underwriting is during your 6-month Medigap Open Enrollment Period, which starts the first month you’re 65 and enrolled in Part B. After this window, insurers can charge you more – or deny coverage – based on your health.

What to Watch Out For

Even savvy shoppers can fall into traps when shopping for Medigap. Here’s what to keep in mind:

• Don’t confuse Medigap with Medicare Advantage. They are very different products. Medigap supplements Original Medicare; Medicare Advantage replaces it.
• Medigap doesn’t cover prescription drugs. You’ll need a separate Part D plan for that.
• Not all plans are available in all states. Massachusetts, Minnesota, and Wisconsin have their own standardized systems.
• Watch for rate increases. Premiums can go up over time, especially with attained-age-rated plans.
• Be cautious with discount plans or non-standardized policies. If a plan sounds too cheap or unusual, read the fine print carefully.

Frequently Asked Questions

Can I switch Medigap plans later?

Yes, but outside your Open Enrollment Period, you may be subject to medical underwriting. In most states, insurers can deny coverage or charge higher premiums based on your health history. Some states have additional protections – check your state’s rules.

Does Medigap cover dental, vision, or hearing?

No. Standard Medigap plans don’t include dental, vision, or hearing coverage. You’d need separate insurance or a Medicare Advantage plan that bundles these extras.

Is Plan G really the best Medigap plan?

Plan G is the most popular for good reason – it covers nearly everything except the Part B deductible (about $257 in 2026). For many people, the peace of mind and near-zero out-of-pocket costs make it worth the higher premium. But if you’re in good health and don’t visit doctors often, Plan N might be a smarter, more affordable choice.

Do I need Medigap if I’m healthy?

That’s a personal call. Even healthy seniors can face unexpected hospitalizations or surgeries. A single hospital stay can cost thousands of dollars in Medicare cost-sharing. Many financial advisors suggest at least a mid-tier plan as protection against the unexpected.

What’s the difference between Medigap and a Medicare Supplement Plan?

They’re the same thing. “Medicare Supplement” is the official term; “Medigap” is the common nickname. Both refer to private insurance policies that fill the gaps in Original Medicare.

Conclusion: Take Your Time, Choose With Confidence

Choosing a Medicare Supplement plan is one of the most important financial decisions you’ll make in retirement – but it doesn’t have to be stressful. The key is to understand what each plan covers, compare premiums from multiple insurers, and choose a plan that fits where you are right now (while thinking ahead).

If you’re not sure where to start, consider working with a licensed Medicare advisor who isn’t tied to any single insurance company. They can walk you through your options at no cost to you.

Ready to find the right plan? Browse the rest of our Medicare & Health Insurance guides or drop your questions in the comments below – we’re here to help.

Recommended Reading: The New Retirementality – a highly rated guide to help you make the most of your retirement.