Average Cost of Medicare Supplement Insurance

Age is one factor that Medicare Supplement Insurance (Medigap) companies can use when determining your monthly plan premium. Your Medigap premium is how much you pay per month to be a member of the plan.

As you compare Medigap plans, it may be helpful to consider how your age could affect your Medigap premium costs over time.

How Much Does Medigap Cost?

The average monthly cost for a Medicare Supplement plan is $149.50 in 2026, though average costs for individual plans vary.¹

The table below displays the average cost of Medicare Supplement Insurance Plan G, Plan F and Plan N by age.

Bear in mind that the premium averages listed above are just that — averages. There may be plans available in your area that cost less than the average listed above for your age.

Other factors such as gender, smoking status, health and where you live can also affect Medigap plan rates. Medicare Supplement Insurance premiums tend to increase with age.

Plan G, Plan F and Plan N are the most popular Medicare Supplement plans in 2026.²

• 39% of Medigap beneficiaries have Plan G
• 10% of Medigap beneficiaries have Plan N
• 36% of Medigap beneficiaries have Plan F

Is Medigap Plan G Better Than Plan F and Plan N?

While there can be a sizable difference in average premiums between Plan F vs. Plan G vs. Plan N, there are only a few differences in the Medicare costs these three popular plans can pay for.

• Plan F pays for all of the out-of-pocket Medicare costs the 10 standardized Medigap plans can cover, including the Medicare Part B deductible.

• Plan G does not cover the Medicare Part B deductible. Aside from that, it offers coverage for all of the same out-of-pocket Medicare costs that Medigap Plan F covers.

• Plan N doesn't cover the Part B deductible or Part B excess charges, and you may be required to pay a $20 copay for some doctor's office visits and up to a $50 copay for trips to the ER that don't result in inpatient admission. In exchange for these moderate copays, Plan N premiums are generally lower than other Medigap plans.

In 2026, the Part B deductible is $283 per year, or roughly $24 per month.

Important: Plan F is not available to new Medicare beneficiaries who became eligible for Medicare on or after January 1, 2020. If you already had Medicare before that date, you can still apply for Plan F if the plan is available in your area.

Do Medigap Premiums Increase with Age?

Yes, there are three different age-related pricing models that Medicare Supplement Insurance companies use to determine their Medigap plan rates in 2026 and future years.

Each type of cost model can affect the average price of a given Medigap plan.

• Community-rated Medigap plans
  With community-rated Medigap plans, every member of the plan pays the same rate, regardless of age.

  For example, an 82-year-old who enrolls in a community-rated Plan G will pay the same Medigap premiums as a 68-year-old beneficiary who has the same Plan G in the same market.

• Issue-age-rated Medigap plans
  With issue-age-rated Medigap plans, premiums are based on your age at the time you enrolled in the plan.

  You will typically pay less for an issue-age-rated plan if you enroll in the plan when you're younger. Your premiums also won't increase based on your age.

• Attained-age-rate Medigap plans
  Attained-age-rated Medigap plans set their premiums based on your current age. As you age, your Medigap plan premiums will gradually increase each year.

Medigap premiums can increase over time due to inflation and other factors, regardless of the pricing model your insurance company uses.

Compare Medigap Plan Costs in Your Area

Again, factors such as gender, smoking status, health, where you live and when you apply for Medicare Supplement insurance can all affect your plan premium.

A licensed insurance agent can help you compare Medicare Supplement Insurance plan costs in your area so that you can find a plan that fits your coverage needs as well as your budget.