All Supplement plans require an additional monthly premium separate from the premium you pay for Part B coverage. The amounts will vary depending on which letter policy you choose because there are so many variables that must be plugged in.
Coverage for deductibles, copayments, coinsurance, and out-of-pocket maximums are different, allowing you to customize the plan that best meets your needs and affordability.
For example, Medicare Supplement Plan F has the most benefits and therefore higher associated costs. Current monthly premiums for a Plan F can range from around $100 to $400, depending on the carrier and your location.
By comparison, Plan A has the fewest benefits and has premiums that range from $60 to just over $300.
Keep in mind premiums can change from year to year depending on which pricing method a carrier uses (community-rated, issue-age-rated, or attained-age-rated).