How Medicare Supplement Premiums Rise With Age
September 17, 2026
Medicare Supplement Insurance policies, commonly called Medigap plans, often cost more each year as you get older when your policy uses attained-age rating, the pricing method most insurers use in 2026. Under attained-age rating, your premium goes up every year based on your current age, on top of any rate increase the insurer applies for medical costs and claims experience. Two other pricing methods, issue-age rating and community rating, handle age differently and typically produce slower premium growth over the years you own the policy.
Quick Answer
Most Medigap policies use attained-age rating, so your premium climbs every year simply because you're older, in addition to standard annual rate increases. Issue-age-rated policies set your price based on the age you were when you bought the plan, so age itself stops driving future increases. Community-rated policies charge everyone the same amount regardless of age, though rates can still rise with medical inflation. Ask the insurer which method a policy uses before you buy, because it shapes how much you'll pay for as long as you keep the plan.
Three Ways Insurers Price Medigap Policies
According to Medicare.gov, insurance companies price Medigap policies using one of three methods, and the method your carrier uses determines how much of your future premium increase is tied to your age.
- Attained-age rating: The premium is based on your current age and goes up each year as you age, separate from any general rate increase.
- Issue-age rating: The premium is based on your age when you first bought the policy and does not increase further just because you get older, though the insurer can still raise rates for everyone in that group.
- Community rating: Everyone in the same area pays the same premium regardless of age, though rates can still rise for other reasons.
Attained-age policies frequently start with a lower premium than issue-age or community-rated options, which is part of why they're common, but that starting price does not reflect the total cost over a decade or more of ownership.
Compare Medigap Pricing Methods
| Feature | Attained-Age | Issue-Age | Community-Rated |
|---|---|---|---|
| Premium tied to your current age | Yes, rises yearly | No | No |
| Typical starting premium | Lower | Moderate | Moderate to higher |
| Long-term cost growth | Highest | Moderate | Lowest from age |
| Can still rise from inflation or claims | Yes | Yes | Yes |
Why Attained-Age Pricing Costs More Over Time
Attained-age pricing compounds, so a policy that looked affordable at 65 can cost meaningfully more by 75 or 80, even if you never file a claim. Each year adds an age-based increase on top of the insurer's standard rate adjustment, and those two increases stack rather than offset each other. This pattern applies across Medigap plan letters, including popular options like Medigap Plan G vs Plan N and legacy coverage such as Medicare Supplement Plan F, though the dollar amounts differ by plan letter, carrier, and state.
Because federal law makes Medigap policies guaranteed renewable, the insurer cannot cancel your coverage or reduce benefits due to your age or health once you're enrolled. That protection covers your right to keep the policy, but it does not cap how much the premium itself can grow.
How to Limit How Much Your Premium Grows
Your strongest window to lock in favorable Medigap pricing is the six-month Medigap Open Enrollment Period that starts the month you turn 65 and are enrolled in Medicare Part B, described in more detail in our guide to Medicare enrollment periods. During this window, insurers generally cannot deny you a policy or charge you more based on health conditions, which matters if you want to shop for issue-age or community-rated coverage before attained-age increases add up.
Outside that window, switching Medigap policies usually requires medical underwriting in most states, so comparing pricing methods before you first enroll, reviewing the full senior plan guide, and understanding how Medigap differs from Medicare Advantage by checking a resource like switching from Medicare Advantage to Medigap can help you avoid locking into a plan that grows faster than your budget.
Before You Buy a Medigap Policy
- Ask the insurer directly whether the policy is attained-age, issue-age, or community-rated
- Request the policy's rate increase history for the past 3 to 5 years
- Compare the same plan letter (like Plan G) across at least 3 carriers in your state
- Confirm your Medigap Open Enrollment Period dates before you shop
- Factor in projected premium growth over 10 years, not just the starting price
Key Takeaway
A lower starting premium on an attained-age Medigap policy can cost more than a slightly higher issue-age or community-rated premium once you account for a decade of age-based increases. Ask about the pricing method first, and compare the growth pattern, not just the day-one price.
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Frequently Asked Questions
Yes. Even community-rated and issue-age policies can see annual rate increases from the insurer, though attained-age policies add an extra increase tied specifically to your age each year.
Switching to a new policy typically means new medical underwriting outside your Medigap Open Enrollment Period or a guaranteed issue right, and the new policy's price will reflect its own pricing method starting from that point, not your original enrollment age.
Not always at first, since attained-age policies often start with the lowest premium. Over many years, though, issue-age and community-rated policies frequently grow more slowly because they remove age as a yearly cost driver.
No. Availability varies by state and carrier, so you'll need to ask insurers directly which pricing methods they offer for the plan letter you're considering.