Key Factors Affecting Premiums for Medicare Supplement Plans
This article explores key factors influencing Medigap premium costs, including plan type, provider, application timing, and regional differences. Understanding these variables helps seniors choose cost-effective Medicare Supplement Plans tailored to their needs, ensuring comprehensive coverage and financial protection against rising healthcare costs.

As healthcare costs rise, retirees face increasing financial pressure to cover medical expenses. With healthcare costs expected to continue climbing, paying out-of-pocket expenses like Medicare co-insurance and deductibles can strain budgets. Enrolling in a Medicare Supplement Plan, or Medigap, offers a solution by helping cover those additional costs not paid by Original Medicare.
Medigap, available through private insurers, supplements Original Medicare (Part A and Part B) by covering co-insurance, deductibles, and some travel-related emergencies. It does not, however, cover long-term care, dental, vision, hearing aids, or private-duty nursing.
Some Medigap plans may also reimburse prescription drug costs. Unlike Medicare, which is managed federally, Medigap policies are sold by private companies. To qualify, you must be enrolled in Medicare Part A and Part B; those with Medicare Advantage plans are ineligible.
What impacts Medigap costs?
Premium rates vary widely by provider and location. Understanding what influences these costs is essential for choosing the right plan and finding the best price.
Continue reading to learn more.
Type of Medicare Supplement Plan
Private insurers set their own premiums for Medigap plans. Most states follow standardized plans, except Massachusetts, Minnesota, and Wisconsin. Common features include:
Coverage for hospice co-insurance and co-payments
First 3 pints of blood transfusions
Co-insurance and co-payments for Parts A and B
Some plans, like Medigap Plan G, offer additional benefits such as full Part A deductible reimbursement, skilled nursing coverage, and foreign travel emergency expenses, but typically at higher premiums.
Insurance Provider
Premium costs differ among insurers. For example, some providers offer discounts for non-smokers. Comparing benefits is vital before selecting a plan. Additionally, premiums can fluctuate over time based on the insurer’s pricing methods. The main pricing structures include:
Issue-age-rated – Premiums are determined by age at application, remaining stable afterward.
Attained-age-rated – Premiums increase as the policyholder ages.
Community-rated – Premiums are based on the region, with everyone paying the same regardless of age.
Economic factors like inflation can impact all price types.
Application Period
Applying during the 6-month Medigap open enrollment period beginning at Medicare Part B activation ensures guaranteed acceptance without medical underwriting. Applications outside this window may involve health assessments and increased premiums or coverage denial due to pre-existing conditions.
Leading Medigap Providers
Humana
Blue Cross Blue Shield
Cigna
United American
Mutual of Omaha
Continental Life
Anthem
Manhattan Life
Transamerica
UnitedHealthcare Medicare Solutions
Most Affordable States for Medigap Plans
Maine
Idaho
North Dakota
Oregon
Montana
Georgia
Virginia
Iowa
North Carolina
Vermont
Costliest States for Medigap Plans
Alaska
Massachusetts
Texas
Maryland
Wyoming
New York
Nevada
California
Mississippi
Rhode Island