Best Medicare Supplement Plans for 2026

What is a Medicare Supplement plan?

Original Medicare (Parts A and B) covers most of your hospital and doctor costs — but not all of them. After Medicare pays its share, you're left with deductibles, copays, and coinsurance that can add up fast. In 2026, the Medicare Part A deductible alone is over $1,600 per hospital stay.

A Medicare Supplement plan — also called Medigap — is private insurance that fills those gaps. You pay a monthly premium, and in return the plan covers most or all of what Medicare doesn't. There are no networks, no referrals needed, and you can see any doctor in the country who accepts Medicare.

Plan G — The most popular choice in 2026

Plan G is the gold standard of Medigap coverage in 2026. It covers everything Medicare approves — minus the Part B deductible (about $240/year in 2026). After you meet that deductible once a year, Plan G pays 100% of your approved costs.

What Plan G covers:

• Medicare Part A deductible (hospital)
• Part A coinsurance and hospital costs up to 365 days after Medicare benefits end
• Part B coinsurance or copayment (after you pay the annual deductible)
• First 3 pints of blood
• Part A hospice care coinsurance or copayment
• Skilled nursing facility coinsurance
• Part B excess charges (if a doctor charges more than Medicare's approved amount)
• Foreign travel emergency (up to plan limits)

Average monthly premium: $120–$200 depending on your age, state, and insurer. Premiums vary significantly — always compare at least 3 quotes.

Plan G is the right choice if you want predictable costs and see doctors frequently. Once you hit your Part B deductible in January, you're covered for the rest of the year.

Plan N — Lower premiums, small trade-offs

Plan N covers most of the same things as Plan G, but you'll pay small copays at the doctor ($20 max per visit, $50 max for emergency room visits that don't result in inpatient admission). It also doesn't cover Part B excess charges.

Average monthly premium: $80–$140 — meaningfully cheaper than Plan G.

Plan N makes sense if you're in good health, don't see specialists often, and want lower monthly costs. If you mostly use preventive care and routine checkups, the copays rarely add up to the premium difference.

High-Deductible Plan G — For the healthy and budget-conscious

High-Deductible Plan G offers the same comprehensive coverage as standard Plan G, but you pay a deductible first — about $2,800 in 2026 — before the plan kicks in. In exchange, monthly premiums are dramatically lower: often $40–$80/month.

This plan works well for seniors who are generally healthy, rarely use healthcare beyond annual checkups, and want a financial safety net for catastrophic events without paying high premiums every month.

Do the math: if you save $100/month versus Plan G ($1,200/year), you'd need to reach your deductible once every 2.3 years to break even. For many healthy seniors, that never happens.

Side-by-side comparison

How to choose the right plan

The right plan depends on three things: how often you use healthcare, how much predictability you want, and what your budget is.

Choose Plan G if:

• You see multiple specialists regularly
• You want zero surprises — one deductible, then everything's covered
• You travel internationally and want emergency coverage
• Peace of mind is worth more to you than a lower monthly premium

Choose Plan N if:

• You're in good health and mostly do routine checkups
• Your doctors all accept Medicare assignment
• You want meaningfully lower premiums and don't mind small copays

Choose High-Deductible Plan G if:

• You're healthy and rarely visit the doctor beyond annual visits
• You have a health savings account (HSA) or savings to cover the deductible
• You're primarily buying for catastrophic protection, not routine coverage

When and how to enroll

The best time to enroll in a Medigap plan is during your Medigap Open Enrollment Period — the 6 months starting the month you turn 65 and are enrolled in Medicare Part B. During this window, insurers can't reject you or charge more due to pre-existing conditions.

Outside this window, insurers can use medical underwriting in most states — meaning they can deny coverage or charge higher premiums based on your health history. A handful of states (New York, Massachusetts, Connecticut) have guaranteed issue rights year-round.

To enroll, contact Medicare-approved insurers directly or use your state's State Health Insurance Assistance Program (SHIP) for free, unbiased counseling. Medicare.gov also has a plan finder tool.

Bottom line

For most seniors who want comprehensive, worry-free coverage, Plan G is the best choice in 2026. Pay the Part B deductible once a year (~$240), and everything else is covered — no networks, no referrals, no surprises.

If you're healthy and budget is tight, Plan N or High-Deductible Plan G can save you hundreds per year with minimal risk. Just do the math with your actual healthcare usage.

Whatever you choose, don't skip Medigap entirely. One unexpected hospitalization can easily cost $10,000–$20,000 out of pocket with Original Medicare alone. A supplement plan is one of the smartest financial decisions a senior can make.