Why Medicare Supplement Premiums Jumped So Much in 2026

If your Medicare Supplement premium went up more than you expected this year, you are not imagining it. 2026 has brought some of the steepest Medigap rate increases in recent memory, and the timing is painful — right as household budgets are already stretched by everyday inflation.

How Unusual Is This, Really?

For most of the last decade, a typical annual Medigap increase sat in the low single digits — a 3% to 5% bump was normal, and anything above 10% was rare enough to raise eyebrows. That is no longer the pattern. Rate filing data from actuarial firms tracking Plan G nationally shows increases in the 12% to 26% range among several major carriers in early 2026 filings alone. A handful of state-specific filings went even further, with some carriers approved for increases above 40%, and one regional Alaska carrier filing above 55%.

More than 12 million Americans carry a Medicare Supplement policy — roughly 43% of everyone on traditional Medicare. This is not a niche issue; it is landing on millions of retirees simultaneously, often in the same year they are also absorbing a higher Part B premium.

What Is Actually Driving It

A few forces are compounding at once:

• Healthcare utilization is climbing as the Medicare population ages and uses more services
• Medical cost inflation is running well above general inflation, driven by labor costs, facility fees, and pharmacy costs
• "Closed block" pricing pressure — when a carrier stops selling a plan to new enrollees, the remaining pool ages together with no new, healthier members joining to balance the risk
• Some carriers priced plans aggressively low for years to win market share, and are now correcting those below-cost premiums with sharper increases

2026 Plan G Increases at a Glance

It Varies a Lot by Carrier and by State

Rate increases were not uniform. Some large national carriers filed double-digit increases across many states at once, simply because their size means a single filing touches a huge number of policyholders. Other carriers — including a few names known for more conservative, actuarially disciplined pricing — kept their increases closer to historical norms. Geography mattered just as much: certain states saw average increases well above 20%, while a handful of others stayed closer to 7%.

What You Can Actually Do About It

• Shop other carriers, if your health allows it. Because Medigap plans are standardized, a Plan G from one carrier covers exactly the same benefits as a Plan G from another. If you can pass medical underwriting, switching to a lower-priced, equally rated carrier can make a real dent in your premium.
• Look at High-Deductible Plan G. Same ultimate coverage as standard Plan G, but you meet an annual deductible first in exchange for a dramatically lower monthly premium — often less than half of standard Plan G.
• Check your state's protections. A few states offer year-round guaranteed issue, meaning you can switch plans without answering health questions at all. Others have a "birthday rule" that opens a short annual window to switch without underwriting.
• Get a full comparison from an independent broker. This costs nothing — brokers are paid by the carrier, not by you — and a broker representing dozens of companies can show you rate history, not just today's premium, so you are not caught by surprise again next year.

The Bigger Takeaway

The carrier you choose at 65 matters more than the sticker price in year one. A carrier with a track record of small, steady increases is a fundamentally different long-term bet than one that started cheap and is now correcting hard. If your renewal notice caught you off guard this year, it is worth having a broker run a side-by-side comparison before you simply accept the new number.