Reviewed by: Dr. Michael Grant, MD, Geriatric Medicine & Health Policy Written by: Senior Health Insurance Editorial Desk Last Updated: May 21, 2026
Medicare Supplement plans—also known as Medigap plans—help cover the “gaps” in Original Medicare (Parts A and B). These gaps can include copayments, coinsurance, and deductibles that can become expensive for retirees on fixed incomes.
In 2026, Medigap plans remain one of the most important tools for reducing out-of-pocket healthcare costs in retirement. However, choosing the right plan can be confusing because benefits are standardized but pricing varies widely by insurer, location, and age.
This guide breaks down the best Medicare Supplement plans, how they compare, and how to choose the right one for your healthcare needs and budget.
What Is a Medicare Supplement Plan? A Medicare Supplement (Medigap) plan is private insurance that works alongside Original Medicare.
It helps pay for costs such as: – Medicare Part A hospital deductibles – Part B coinsurance – Skilled nursing facility costs – Excess charges (in some plans) – Foreign travel emergency care (in select plans) Medigap does NOT replace Medicare. Instead, it fills financial gaps.
Most Popular Medicare Supplement Plans in 2026 Medigap plans are labeled by letters (A, B, D, G, K, L, N). Not all plans are available to new enrollees, but several remain widely used.
Plan G — Best Overall Coverage
Medicare Supplement Plan G is currently the most popular Medicare Supplement plan for new beneficiaries. It offers near-comprehensive coverage, except for the Medicare Part B deductible.
What Plan G Covers: – Part A hospital coinsurance – Part B coinsurance (after deductible) – Skilled nursing facility care – Hospice care coinsurance – Excess charges (rare but possible) – Foreign travel emergency (limited)
Why it’s popular: Plan G offers the most complete coverage available to new Medicare enrollees without paying the higher premiums of Plan F (no longer widely available to new users).
Best for: Retirees wanting predictable healthcare costs, frequent doctor or specialist visits, people with chronic conditions.
Plan N — Best Budget-Friendly Option Medicare Supplement Plan N is a lower-premium alternative that still provides solid coverage, though with some out-of-pocket costs.
What Plan N Covers: – Hospital costs under Medicare Part A – Most Part B coinsurance – Skilled nursing care – Emergency foreign travel coverage
What you may pay: Small copays for doctor visits, emergency room copay if not admitted, Part B excess charges (in rare cases).
Why it’s popular: Plan N is ideal for people who want lower monthly premiums and are comfortable with occasional small copays.
Best for: Healthy retirees, budget-conscious seniors, people who rarely visit doctors.
Plan F — Most Comprehensive (Limited Availability) Medicare Supplement Plan F is the most comprehensive Medigap plan available, but it is generally only accessible to people who became eligible for Medicare before 2020.
What Plan F Covers: All Medicare Part A and B costs, deductibles and coinsurance, excess charges, foreign travel emergency care.
Why it’s declining: New Medicare enrollees are no longer eligible for Plan F, making it less common in 2026.
Best for: Long-term Medicare beneficiaries, those already enrolled before eligibility cutoff.
Plan G vs Plan N: Key Differences
Plan G and Plan N are the two most commonly compared Medigap plans today. Plan G offers broader coverage with fewer out-of-pocket costs, while Plan N offers lower premiums but more cost-sharing.
Plan G is typically preferred by people with frequent medical visits, while Plan N is better for healthier individuals who want to save on monthly premiums.
How Medicare Supplement Plans Work with Medicare
Advantage Medigap is NOT compatible with Medicare Advantage plans. You must choose one: Original Medicare + Medigap (Supplement plan) OR Medicare Advantage (Part C).
Medigap is ideal for: Predictable healthcare costs, nationwide provider access, frequent medical care.
Medicare Advantage is often chosen for: Lower monthly premiums, bundled drug coverage, extra benefits (vision, dental, etc.).
How Much Do Medicare Supplement Plans Cost in 2026?
Prices vary based on age, location, insurance company, tobacco use, plan type.
General estimates:
– Plan N: Lower monthly premiums, higher out-of-pocket use – Plan G: Higher monthly premiums, lower out-of-pocket costs – Plan F: Highest coverage, but not widely available to new enrollees . Even though benefits are standardized, pricing differences between insurers can be significant.
How to Choose the Best Medigap Plan
1. Consider Your Health Needs: Frequent doctor visits → Plan G; Occasional care → Plan N; Already enrolled before 2020 → Plan F.
2. Compare Monthly Premiums vs Out-of-Pocket Costs: Lower premiums often come with higher copays and deductibles. Always calculate total yearly healthcare spending—not just monthly cost.
3. Check Provider Acceptance: Medigap allows you to see any doctor who accepts Medicare nationwide, but always confirm provider participation.
4. Look at Rate Stability: Some insurers increase premiums more aggressively over time. Choosing a stable insurer can save money long-term.
5. Consider Enrollment Timing: The best time to enroll is during your Medigap Open Enrollment Period, when you have guaranteed acceptance without medical underwriting.
Common Mistakes to Avoid
Many Medicare beneficiaries make costly errors such as: Choosing based only on monthly premium, ignoring long-term healthcare needs, switching plans without understanding underwriting rules, confusing Medicare Advantage with Medigap, missing enrollment deadlines.
Frequently Asked Questions (FAQ)
– What is the best Medicare Supplement plan in 2026? Plan G is widely considered the best overall Medigap plan because it offers extensive coverage with minimal out-of-pocket costs.
– What is the cheapest Medicare Supplement plan? Plan N is usually the most affordable option, with lower monthly premiums but some copays and limited cost-sharing.
– Can I switch Medicare Supplement plans later? Yes, but you may need to go through medical underwriting unless you are in a protected enrollment period.
– Does Medigap cover prescription drugs? No. You need a separate Medicare Part D plan for prescription drug coverage.
– Is Plan F still available in 2026? Plan F is generally not available to new Medicare enrollees, but existing beneficiaries may still keep it.
– Do Medicare Supplement plans work nationwide? Yes. Medigap plans allow you to see any doctor or hospital in the U.S. that accepts Medicare.
– Is Plan G better than Plan N? Plan G offers more comprehensive coverage, while Plan N has lower monthly premiums. The better option depends on your healthcare usage and budget.
– When is the best time to buy a Medigap plan? The best time is during your Medigap Open Enrollment Period, which starts when you first enroll in Medicare Part B.
Recommended External Sources Centers for Medicare & Medicaid Services (CMS) Medicare.gov Official Site National Institutes of Health (NIH) AARP Medicare Resources KFF (Kaiser Family Foundation)
