Cheapest Medicare Supplement Plans for 2026: Cost Comparison

Overview of Medicare Supplement Plans and Costs

Medicare Supplement, or Medigap, plans are designed to help individuals cover the out-of-pocket costs left behind by Original Medicare (Parts A and B). Medigap policies are standardized across most states (labeled A through N), offering the same basic benefits no matter which insurer you choose. These benefits cover expenses such as deductibles, copayments, and coinsurance but do not include prescription drug coverage (that’s Medicare Part D) or long-term care. If you need to brush up on what Original Medicare covers, see What to Know About Medicare: Key Facts & Coverage and What’s the Difference Between Medicare A and B?.

As of 2026, the cheapest Medicare Supplement plans are typically Plan K, Plan L, High-Deductible Plan G (HDG), and Plan N. The monthly premiums for these affordable Medigap plans usually range from $24 to $90, though they can go higher depending on your state, age, gender, tobacco use, and the insurer’s pricing method (community-rated, issue-age, or attained-age).

Below is an overview of the average 2026 monthly premium ranges for a typical 65-year-old (actual Medicare Supplement monthly cost varies):

Plan	Low-End Premium	High-End Premium	Key Notes
Plan K	$51-$68	$247-$325	50% coinsurance until the annual out-of-pocket limit, then 100% coverage.
Plan L	$93-$103	$410-$646	25% coinsurance until limit; lower cost than most full-coverage plans.
Plan N	$83-$120	$586-$883	Small copays (up to $20/office visit, $50/ER); doesn’t cover excess charges.
High-Deductible Plan G	$24-$35	$242-$323	$2,950 deductible in 2026, then coverage is similar to standard G.
Standard Plan G	$110-$157	$794-$1,179	Covers nearly all gaps except Part B deductible (~$257 in 2026); popular for value.

Premiums reflect national averages, state-specific data (such as Arizona), and quotes from cities like Des Moines, IA. It’s important to note that Plan F and High-Deductible F are no longer available to newly eligible beneficiaries after 2019, so the most comparable comprehensive options are Plan G and HDG. Medicare Eligibility Age Requirements and Enrollment Guide details when you can sign up for these plans.

Top Affordable Medicare Supplement Plans: Plan K, L, N, and High-Deductible G

Medicare Supplement Plan K

Plan K is generally the cheapest Medicare Supplement plan available for new enrollees, thanks to its significant cost-sharing features. Policyholders pay only about 50% of many out-of-pocket costs until meeting an annual out-of-pocket limit ($7,060 in 2026). Once you reach this limit, Plan K covers 100% of further eligible expenses for the year. This plan is optimal for those wanting a low monthly premium and not expecting high medical usage.

Medicare Supplement Plan L

Plan L works similarly to Plan K but provides greater coverage – you pay only 25% coinsurance on most cost-sharing items, with a slightly lower out-of-pocket maximum ($3,530 in 2026). While premiums are higher than Plan K, they remain affordable Medigap options compared to more comprehensive plans.

Medicare Supplement Plan N

Plan N balances premium affordability with robust coverage. You pay a small copay for doctor office visits (up to $20) or ER visits (up to $50), but there’s no coverage for Part B excess charges. In states where excess charges aren’t common or are prohibited, Plan N may be especially appealing. Comparing Plan N vs Plan G cost: Plan G has higher premiums but offers more-complete coverage, while Plan N’s copays can help keep premiums much lower, making it a strong value play for healthy seniors.

High-Deductible Plan G (HDG)

The High-Deductible Plan G (“HDG”) is one of the cheapest Medigap options in 2026, with monthly premiums often starting as low as $24. However, this plan requires you to meet a $2,950 deductible (in 2026) before most benefits kick in. After that, it covers the same broad range as Plan G, including skilled nursing coinsurance, foreign travel emergencies, and most out-of-pocket gaps. HDG is especially worth considering for healthy people, infrequent health-care users, or those with Health Savings Accounts who want to keep monthly costs minimal.

If you’re interested in affordable Medigap options with high deductible Medigap plans, Plan HDG provides value – but only if you’re comfortable paying out-of-pocket costs up to the deductible first.

Medigap Costs by State: Example Premiums

Medicare Supplement monthly cost varies considerably by state, city, and insurer. For instance, Arizona’s 2026 premiums for a 65-year-old female are: Plan K ($37), Plan L ($76), Plan G ($110), Plan N ($90). Nationally in 2026, premiums tend to track closely with regional health costs and insurance regulations. For a clearer view, here’s a sampling of plan premiums across different cities:

Location	Plan N	HDG	Standard G
Des Moines, IA	$83-$586	$33-$286	$116-$794
Aurora, CO	$93-$698	$35-$323	$128-$1,179
Washington, D.C.	$95-$710	$24-$275	$124-$802

States like California and Washington, D.C., often have the highest Medigap premiums due to higher cost-of-living, while regions with more insurer competition may offer better rates. For those seeking $0 premium options in specific states, see the Minnesota Medicare Plans 2026: Top $0 Premium Options guide.

For the lowest rates, it’s advised to enroll during your six-month Medigap Open Enrollment window (when you first start Medicare Part B). During this period, coverage is guarantee-issued, and you cannot be denied due to pre-existing conditions or health status.

Factors That Influence Medicare Supplement Premiums

The price you pay for a Medigap plan depends on several key elements. To compare Medicare Supplement quotes accurately, consider how these factors may impact your premiums:

• Age, Gender, and Tobacco Use: Many insurers use “attained-age” pricing (premium increases as you age); men and tobacco users often pay higher rates.
• Location: Premiums are higher in states with more health-care spending and stricter regulations. For example, urban California and D.C. have some of the nation’s steepest rates, sometimes exceeding $700 per month for comprehensive plans.
• Insurance Company and Rate History: Financially strong, top-rated carriers (A or B++ ratings) may be less likely to impose large future rate hikes. It’s wise to review rate increase histories when getting quotes.
• Plan Type/Design: Choosing high deductible Medigap plans (like HDG) or cost-sharing models (Plans K and L) lowers premiums, whereas full-coverage plans have higher costs in exchange for reduced out-of-pocket expenses.
• Household Discounts: Some insurers offer a 5-15% premium discount if you and a spouse enroll together. Ask about available discounts when comparing policies.

Many shoppers find it helpful to speak with a licensed agent or use Medicare’s Plan Finder when evaluating options, to ensure they’re reviewing covered benefits and all monthly costs.

Tips to Find the Cheapest Medigap Plans

Here are actionable steps to identify and secure the cheapest Medicare Supplement plans for your needs in 2026:

• Use Medicare.gov, comparison tools, or work with a licensed agent to gather at least three to five lowest quotes from A-rated insurers. This increases your odds of finding an affordable Medigap plan suited to your budget.
• If you’re a low healthcare user, prioritize High-Deductible G, Plan N, K, or L. For those who desire broader coverage and are willing to pay higher premiums, consider Standard Plan G.
• Enroll during your Medigap Open Enrollment period (the six-month window after qualifying for Medicare Part B), as you’ll be guaranteed acceptance and can lock in the best rates without health underwriting.
• Review available household discounts, as well as each insurer’s history of rate increases, customer satisfaction, and financial stability.
• Use side-by-side benefit charts or online calculators to directly compare Medicare Supplement quotes for premiums, coverage, and out-of-pocket limits. Also, check annually for new rates, as premiums and discounts can shift year to year.

Actual policy costs may differ from published averages, so always get personalized quotes to ensure your premium reflects your age, zip code, and medical profile. If you want alternatives or wish to understand other non-standard plans, such as Private Fee-for-Service offerings, read What Is Medicare PFFS? Private Fee-for-Service Plans 2026.

Ultimately, Medigap buyers should focus on matching their predicted healthcare usage with their preferred budget, using HDG, N, K, and L as starting points for savings, and always reading the fine print on cost-sharing, out-of-pocket maximums, and coverage exclusions.