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Medicare Supplement Plans Cost 2027: Premiums by Plan, Age and Pricing Method

 

Reviewed by Russell Noga, Licensed Medicare Insurance Broker (all 50 states) — Last updated October 20, 2026

Key Takeaway

Medicare Supplement plans with the same letter have the same benefits, but prices can vary by more than $100 a month between companies. Your age, ZIP code and the company’s pricing method decide what you pay.

Medicare Supplement plans, also called Medigap, cost most people between about $120 and $270 a month. This guide shows average 2026 premiums by age for Plan G and Plan N, how insurance companies set their prices, what to expect for 2027 and the simple ways to pay less for the same coverage.

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How Much Do Medicare Supplement Plans Cost in 2027?

Medicare Supplement plans cost by age: average monthly Plan G and Plan N premiums at ages 65, 70, 75, 80 and 85

Premiums depend on the plan letter, your age and where you live. Here are average monthly premiums for the two most popular plans, based on 2026 industry sales data. Insurance companies are filing their 2027 rates now, and most changes take effect on your policy anniversary.

Age Plan G Plan N
65 $166 $123
70 $181 $139
75 $205 $165
80 $252 $185
85 $267 $219

Average monthly premiums from 2026 Medicare Supplement sales data. Not a national average of every plan. Your price depends on your ZIP code, gender, tobacco use, household discounts and the insurance company.

Good to know: Plan N averages about $40 to $50 a month less than Plan G at most ages. That can add up to $500 or more a year, minus any Plan N copays you pay.

What Affects Your Medicare Supplement Premium

Two people buying the same plan letter can pay very different prices. These are the factors insurance companies use.

✔
Age: most companies charge less at 65 and more as you get older
✔
ZIP code: prices vary by state and even by county
✔
Plan letter: plans with more coverage, like Plan G, cost more than Plan N or High-Deductible Plan G
✔
Gender and tobacco use: women often pay a little less, and tobacco users usually pay more
✔
Household discount: many companies take money off when two people in your home have a policy
✔
When you buy: during your Medigap Open Enrollment Period, companies cannot charge you more because of your health

3 Ways Insurance Companies Price Medicare Supplement Plans

Three ways Medicare Supplement plans are priced: community-rated, issue-age and attained-age premiums over time

 

Each insurance company uses one of three pricing methods. It matters because it decides how your premium changes as you get older.

Community-Rated

✔Same premium for everyone in the area
✔Age does not change your price
✔Can start higher at 65

Issue-Age

✔Priced on your age when you buy
✔Does not rise because you age
✔Buying earlier locks a lower base

Attained-Age

✔Priced on your current age
✔Rises as you get older
✔Often cheapest at 65

Watch the starting price: Attained-age plans often look cheapest at 65, but they rise every few years as you age. Ask how a plan is priced before you compare premiums side by side.

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Plan G vs Plan N vs High-Deductible Plan G: Yearly Cost

The cheapest premium is not always the cheapest plan. Here is how the total yearly cost compares at age 65, using the 2026 average premiums above and the 2026 Part B deductible of $283.

Plan Yearly premium You also pay Most you pay in a year*
Plan G About $1,990 Part B deductible ($283) About $2,275
Plan N About $1,475 Part B deductible, copays, excess charges About $1,760 plus copays
High-Deductible G Lowest premium Up to $3,050 deductible in 2027 Premium plus up to $3,050

*Plus your Part B premium. Plan G and Plan N figures use 2026 average premiums at age 65. Your premium will differ.

If you see the doctor often, Plan G usually gives the most predictable costs. If you are healthy and rarely see a doctor, Plan N or High-Deductible Plan G can save money. With High-Deductible Plan G, a hospital indemnity policy can pay cash toward the deductible if you are hospitalized. Compare all 10 Medicare Supplement plans to see how each one covers your costs.

Why Medicare Supplement Rates Go Up

Most insurance companies raise premiums once a year. Learn why in our guide to Medicare Supplement rate increases. Increases come from three places: rising medical costs, your age if the plan is attained-age, and the claims experience of the company’s members in your state.

✔
Each state reviews rate increases before they take effect
✔
Companies with a history of smaller increases can cost less over time, even if they start a little higher
✔
If your rate jumps, you can apply for the same plan letter with another company
✔
Outside open enrollment, switching companies may require answering health questions

Before you switch: Never cancel your current plan until a new company has approved your application in writing.

Other Medicare Costs to Budget For

Your Medicare Supplement premium is only part of your health care budget. Plan for these costs too.

Part B Premium

✔$202.90 a month in 2026
✔2027 amount announced this fall
✔Paid on top of your plan

Part D Drug Plan

✔Separate drug coverage
✔Deductible up to $700 in 2027
✔Out-of-pocket cap of $2,400

Dental, Vision, Hearing

✔Not covered by Medicare Supplement
✔Standalone plans available
✔Budget for routine care

You can review the official Part B and Part D amounts at Medicare.gov.

How to Lower Your Medicare Supplement Costs

1
Buy during your open enrollment window. Your 6-month Medigap Open Enrollment Period guarantees the best rates without health questions.
2
Compare several insurance companies. The same plan letter can cost $100 or more a month less with another company.
3
Ask about household discounts. Covering two people in the same home often lowers both premiums.
4
Check the pricing method. A plan that is cheapest at 65 may not stay cheapest at 75.
5
Match the plan to your health. Plan N or High-Deductible Plan G can cost less if you rarely see a doctor.

The Bottom Line

The plan letter sets your benefits, but the insurance company sets your price. A licensed insurance agent at MedigapWise can compare premiums from several companies in your ZIP code at no cost.

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Medicare Supplement Plans Cost — Frequently Asked Questions

➤ How much do Medicare Supplement plans cost in 2027?

Most people pay somewhere between about $120 and $270 a month for a Medicare Supplement plan, depending on the plan letter, age, ZIP code, gender and tobacco use. Plan G usually costs more than Plan N, and High-Deductible Plan G usually costs the least.

➤ What is the average cost of Medicare Supplement Plan G?

Industry sales data from 2026 puts the average Plan G premium at about $166 a month at age 65, rising to about $205 at 75 and $267 at 85. Your price can be higher or lower depending on where you live and which company you choose.

➤ How much cheaper is Plan N than Plan G?

Plan N usually costs about $40 to $50 a month less than Plan G at the same age. In exchange, you pay up to $20 for some office visits, up to $50 for ER visits that do not lead to an admission, and any Part B excess charges.

➤ Why does the same Medicare Supplement plan cost different amounts?

Every plan with the same letter has the same benefits, but each insurance company sets its own premium. Companies also use different pricing methods, discounts and rate increase histories, so comparing several companies is the best way to save.

➤ Do Medicare Supplement premiums go up with age?

With attained-age pricing, yes, your premium rises as you get older. Issue-age and community-rated plans do not go up because of age, but any plan can go up because of inflation and rising health care costs.

➤ What is the cheapest Medicare Supplement plan?

High-Deductible Plan G and Plan K usually have the lowest monthly premiums. They cost less because you pay more out of pocket before the plan pays in full, up to $3,050 for High-Deductible Plan G in 2027.

➤ Is the Part B premium included in my Medicare Supplement premium?

No. You pay your Medicare Part B premium separately, in addition to your Medicare Supplement premium. The standard Part B premium is $202.90 a month in 2026, and CMS announces the 2027 amount in the fall.

➤ Can I lower my premium after I enroll?

You can apply with a different insurance company for the same plan letter at a lower price. Outside your open enrollment window or a guaranteed issue right, you may have to answer health questions to switch.

➤ When do Medicare Supplement rates change?

Each insurance company files its rates with the state, and most adjust premiums once a year, often on your policy anniversary. You can get current quotes at any time.

➤ Does it cost anything to compare Medicare Supplement prices with MedigapWise?

No. Comparing prices with our licensed insurance agents is free, your premium is the same as buying directly from the insurance company, and you are never required to enroll.

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