A 66-year-old Ohio woman pulls three quotes for Medigap Plan G. One costs $118 a month. Another is $167. The highest comes in at $214. The benefits are the same.
That is one of Medigap’s stranger features. In most states, lettered plans are standardized, so every standard Plan G covers the same basic benefits regardless of which insurer’s name appears on the card. What can vary dramatically is the premium and, just as important, how that premium is priced as she gets older. She picks the $118 policy and congratulates herself on saving more than $1,100 a year. The question she did not ask is what happens to that rate at 70, 75 and 80.
Three Pricing Methods, One Plan G
Medicare recognizes three ways insurers can price Medigap policies: community-rated, issue-age-rated and attained-age-rated. A community-rated policy generally charges the same premium regardless of age. An issue-age policy bases the rate on how old the buyer is when the policy is purchased, so later birthdays do not create age-based increases. Neither structure freezes the premium; rates can still rise for inflation, medical costs and other permitted factors.
Attained-age works differently. The premium is based on the policyholder’s current age, so it can increase as she gets older, in addition to whatever broader rate increases the insurer receives approval to impose. That makes the cheapest quote today an incomplete comparison.
The Age Curve Can Hide Behind a Great Introductory Price
An attained-age Plan G can look especially attractive to a younger Medigap buyer because she is being priced at her current age. As the years pass, age becomes another force pushing the premium upward. An issue-age policy that starts higher can therefore narrow the gap later. A community-rated policy follows yet another path.
None is automatically cheapest over a lifetime because future carrier-wide increases are unknowable. But the pricing method tells her whether aging itself is built into the rate trajectory. That is the part worth asking about before saving $49 this month. And because all three carriers’ standard Plan G policies cover the same Medicare gaps, she is not paying extra for richer Plan G medical benefits. She is comparing insurers, pricing structures and the cost of keeping that coverage over time.
Switching Later May Be Harder Than She Thinks
If her premium eventually becomes uncompetitive, she may want to move to another insurer. Federal law does not guarantee that freedom indefinitely. A one-time six-month Medigap open enrollment period begins when someone is 65 or older and enrolled in Medicare Part B. During that window, insurers cannot deny coverage or charge more because of health. Outside it, absent another guaranteed-issue right, a new insurer may ask medical questions, decline the application or charge more.
States can provide additional protection. California and Idaho, for example, give existing Medigap policyholders annual birthday windows to move to qualifying equal-or-lesser coverage without medical underwriting. Washington gives many existing Medigap holders unusually broad switching rights. The rules differ substantially, which makes state law part of the initial shopping decision rather than an afterthought.
Plan G Still Covers the Same Gaps
In 2026, Plan G covers major Original Medicare cost sharing including the $1,736 Part A hospital deductible, $434 daily hospital coinsurance for days 61 through 90, $868 lifetime-reserve-day coinsurance and $217 daily skilled nursing facility coinsurance for days 21 through 100. The enrollee remains responsible for the $283 Part B deductible.
Those benefits do not become richer because one insurer charges $214 and another charges $118. Premium behavior is where the stories separate. (we mapped the surcharges and coverage traps in a free guide here: Medicare’s Hidden Bills).
Ask About Tomorrow’s Rate Before Buying Today’s
Before signing:
- Ask which pricing method the policy uses and get the answer in writing.
- For attained-age coverage, request the insurer’s current rates at several older ages so you can see how much of the premium curve comes from age. Treat those as a snapshot, not a forecast, because general rates can still change.
- Check your state’s switching protections before assuming you can simply replace the policy later if the premium gets too high.
Every Plan G shopper sees the monthly premium. The smarter comparison is whether age itself is waiting inside that number to raise it later.
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