Is High-Deductible Plan G Worth It in 2026?

High-deductible Plan G is worth it when the premium you save each year, compared with standard Plan G, is larger than the extra $2,667 you could owe in a bad year, or when you could absorb that amount without it hurting. In 2026 the deductible is $2,950, and because the $283 Part B deductible counts toward it, $2,667 is the true size of the bet you are making.

That is the whole decision, and it can be worked out on the back of an envelope once you have two real quotes. The rest of this post explains where the numbers come from, how the deductible has moved since the plan was introduced in 2020, how it compares with standard Plan G and Plan N, and the one rule about switching later that makes this a longer-term choice than it looks.

What is high-deductible Plan G?

Medicare Supplement plans are standardized by letter. Plan G, the standard version, pays everything Original Medicare leaves behind except the annual Part B deductible: the Part A hospital deductible, the daily coinsurance in a skilled nursing facility, the 20% Part B coinsurance, and Part B excess charges. Once you have paid the $283 Part B deductible for the year, a standard Plan G holder usually sees no further bills for Medicare-covered care (Medicare.gov).

High-deductible Plan G is the same plan with one change. CMS describes the deductible as the annual out-of-pocket expenses, excluding premiums, that a beneficiary must pay before the policy begins paying benefits (CMS.gov). Medicare.gov puts it more bluntly: you must pay for Medicare-covered costs, meaning coinsurance, copayments and deductibles, up to the deductible amount of $2,950 in 2026 before your policy pays anything.

After that point the two plans are identical. Every dollar of Medicare-covered cost-sharing above the deductible is paid the way standard Plan G would pay it, excess charges included.

Two eligibility details matter. First, CMS limits high-deductible Plan G to people who are new to Medicare on or after January 1, 2020, meaning those who turned 65 or first became eligible through disability or ESRD on or after that date. People who were already on Medicare before then were offered high-deductible Plan F instead, which is closed to newer beneficiaries. Second, Medicare.gov notes the high-deductible option is sold in some states rather than all. Florida uses the federal standardized plan letters, so it is sold here, and which carriers file it and at what price is what the state’s rate comparison tool shows.

What is the high-deductible Plan G deductible for 2026?

The 2026 deductible is $2,950. It is not a number carriers choose. Section 1882(p)(11)(C) of the Social Security Act set the figure at $1,500 for 1998 and 1999 and directed that it rise each year by the percentage change in the Consumer Price Index for All Urban Consumers, rounded to the nearest $10. CMS publishes the new amount each fall after the August CPI-U is released, usually in mid-September (CMS.gov).

Here is every year since high-deductible Plan G became available, from the annual CMS announcements:

Two things stand out. The deductible has risen by $610 in six years, about 26%, and most of that came in the two high-inflation years of 2022 and 2023. So a high-deductible Plan G bought in 2020 on the strength of a $2,340 worst case now carries a $2,950 worst case, and nothing about the policyholder changed. If inflation runs hot again, the deductible follows it the next January.

The 2027 figure will be announced this fall, once the August 2026 CPI-U is published. Any post or quote that shows you a 2027 deductible before then is guessing.

Does the Part B deductible count toward the high-deductible Plan G deductible?

Yes, and this is the single most important detail in the arithmetic. The Part B deductible is a Medicare-covered cost, so the $283 you pay in 2026 is credited toward the $2,950 rather than stacked on top of it (Medicare.gov).

Why that matters: a standard Plan G holder also pays the $283 Part B deductible, because no Plan G covers it. So the extra exposure you take on by choosing the high-deductible version is not $2,950. It is $2,950 minus $283, or $2,667. That is the maximum additional amount you can be out of pocket in any single year compared with a neighbour on standard Plan G, before premiums.

A worked example of how the deductible fills up in practice, using the 2026 Medicare figures (CMS.gov):

1. January: first doctor visit of the year. You pay the $283 Part B deductible. Deductible met so far: $283.
2. Spring: outpatient tests and specialist visits total $4,000 in Medicare-approved charges. Medicare pays 80%; you pay the 20%, which is $800. Met so far: $1,083.
3. Summer: a three-night hospital stay. Part A’s inpatient deductible is $1,736 per benefit period. Met so far: $2,819.
4. The next $131 of Medicare-covered cost-sharing completes the $2,950. From then to December 31, high-deductible Plan G pays everything standard Plan G would pay.

What does not count: your premiums, prescription drugs under Part D, dental, vision, hearing, and anything Medicare does not cover. Part D has its own separate protection, the $2,100 out-of-pocket cap on covered drugs in 2026, and it runs completely independently of your Medigap deductible.

How does high-deductible Plan G compare with standard Plan G and Plan N?

Plan N is the other plan people shopping for a lower premium usually land on, so the three belong in one table. Plan N’s copays and its treatment of excess charges are from the standardized benefit chart; the 2026 dollar figures are CMS’s.

Notice the last row of cost-sharing. High-deductible Plan G has a hard ceiling on what a year of covered care can cost you. Plan N does not, because its copays repeat with every visit and excess charges are open-ended. In a light year Plan N usually costs less than the high-deductible plan; in a heavy one, the high-deductible plan’s ceiling is the thing you are paying for. Excess charges are legal in Florida and worth understanding before you pick Plan N; we cover them in what Medicare Part B excess charges are and which plans cover them.

When does high-deductible Plan G actually save money?

The test is one subtraction. Take the annual premium of a standard Plan G quote, subtract the annual premium of the high-deductible Plan G quote from the same carrier, and call the result your saving. Then:

• If your saving is more than $2,667, high-deductible Plan G costs less in every possible year, including the worst one. There is no scenario where standard Plan G comes out ahead on money.
• If your saving is less than $2,667, high-deductible Plan G wins in light years and loses in heavy ones. The break-even point is when your Medicare cost-sharing for the year reaches $283 plus your saving.

Premiums are set by carrier, county and age, so we will not print one here as if it were yours. To show the shape of the decision, the table below uses an illustrative saving of $1,200 a year, which is $100 a month. It is not a quote. Real 2026 Florida rates by county are published in the state’s Medicare Supplement rate comparison tool, linked in the Florida section below.

Read the last row carefully, because it is the one people get wrong in both directions. Even in a catastrophic year, the high-deductible plan does not cost you $10,000. It costs you $2,950, and after the premium saving the difference from standard Plan G is $1,467. That is a real cost, but it is a bounded one. Whether it is a good trade depends on how many light years you expect to bank $1,200 in, and on whether a $2,950 bill in a bad year would be an inconvenience or a crisis.

If you would like to put your own numbers against standard Plan G and Plan N, our Plan G vs Plan N comparison tool does that arithmetic, and the annual Medicare cost estimator totals a full year on Original Medicare with a Medigap plan, including the Part B premium of $202.90 a month in 2026.

Who is high-deductible Plan G a good fit for, and who should skip it?

Plan design should follow cash flow and temperament, not a guess about future health, because nobody can make that guess reliably. The profile that tends to suit the high-deductible version:

• You have a cash cushion. A $2,950 bill in a bad year is annoying rather than destabilising. If it would go on a credit card, that is your answer.
• You are early in Medicare and the saving is large. The premium gap between standard and high-deductible Plan G is widest when the standard premium itself is high, and every year the deductible is not reached is a year the saving is real money.
• You understand the deductible resets every January and will not be surprised by a bill in a year with a hospital stay.
• You want the ceiling. Compared with Plan N, the high-deductible plan caps a year of Medicare cost-sharing at a known number and still covers excess charges.

The profile that usually should not:

• A chronic condition with predictable, repeated care. Regular infusions, dialysis, frequent imaging or specialist care will reach $2,950 most years. At that point you are paying the deductible every year and the saving has to beat $2,667 to be worth it.
• A budget where the premium saving would be spent, not kept. The plan works when the saving sits in reserve for the deductible. If it is absorbed into monthly spending, the bad year arrives with nothing set aside.
• Anyone who finds a surprise bill genuinely stressful. Standard Plan G’s appeal is that after $283 the mail stops. For some people that predictability is worth more than the premium difference, and that is a perfectly rational choice.

None of this is advice about a specific person’s situation. It is the frame the decision fits in.

Can you switch from high-deductible Plan G to standard Plan G later?

This is the question to answer before you buy, not after, because the honest answer is: maybe, and it gets harder with time.

Medicare.gov says you will not be able to switch your Medigap policy outside your six-month Medigap Open Enrollment Period except in specific situations, and that if you do switch you may have to pay more for the new policy and answer some medical questions (Medicare.gov). In plain terms, moving from high-deductible Plan G to standard Plan G after your window closes is a new application, and the carrier is generally allowed to underwrite it. A cancer diagnosis, a heart condition or insulin-dependent diabetes can mean a decline.

The pattern that catches people is predictable: someone healthy at 65 takes the high-deductible plan to save on premium, does well for eight years, receives a diagnosis at 73 that guarantees they will hit the deductible every year, and then discovers that the plan they would now prefer is the one they can no longer qualify for. The plan itself is not the problem. Timing is.

Three things soften this:

• The 30-day free look. If a carrier approves a switch, Medicare.gov gives you 30 days on the new policy before you have to cancel the old one. You pay both premiums for that month, and you should not cancel the first policy until you have decided to keep the second.
• Guaranteed-issue rights. Certain events, such as a Medicare Advantage plan leaving your county or an employer plan ending, create a window in which a carrier must sell you specific Medigap plans without underwriting. They are narrow and event-driven, and we walk through them in what happens if you miss your Medigap open enrollment window.
• Some carriers allow a move within their own plans without full underwriting. This is carrier policy, not federal law, and it changes. Do not build a plan around it without confirming the current rule with the carrier in writing.

The safer way to think about it: choose the plan you would be content to still hold at 80. If the answer is the high-deductible version, buy it with confidence. If the answer is standard Plan G, buy that during your open enrollment period, when nobody can ask a health question.

What is different about high-deductible Plan G in Florida?

Three Florida-specific facts change the arithmetic here compared with most of the country.

Florida requires issue-age rating. The Florida Department of Financial Services states that all Florida Medicare Supplement policies must be sold on an issue-age basis, meaning an individual’s premium will not increase due to age as they get older (Florida DFS). Medicare.gov’s definition of issue-age pricing is the same: the premium is based on the age you were when you bought the policy and does not change as you get older, though it may still rise for inflation and other factors (Medicare.gov). For a high-deductible Plan G bought at 65, that means the premium saving you calculate today is locked to your entry age rather than shrinking each birthday, as it would under attained-age pricing in many other states. The deductible itself still climbs with the CPI-U every year; the rating rule protects the premium side, not the deductible side. We explain the three rating methods in do Medicare Supplement premiums go up with age.

Florida permits Part B excess charges. A handful of states ban them; Florida is not one of them. That is the strongest argument for choosing high-deductible Plan G over Plan N if you want a lower premium: once the deductible is met, the high-deductible plan pays excess charges in full, while Plan N never does.

Florida publishes the rates. The Florida Department of Financial Services runs a Medicare Supplement rate search where you can pull current filed premiums by plan letter, age and county before you speak to anyone (apps.fldfs.com). Pull standard Plan G and high-deductible Plan G for your age in Hillsborough, Pinellas, Sarasota or wherever you live, subtract, and you have the one number this whole post turns on. The state also requires a six-month open enrollment period beginning the month you turn 65 and enrol in Part B, during which no carrier can price or decline you on health, which matches the federal rule.

What to do before you decide

A short order of operations that takes an afternoon:

1. Get the two premiums for your age and county from the Florida rate search or from a licensed agent, for the same carrier. Subtract to find your annual saving.
2. Compare the saving with $2,667. Above it, the high-deductible plan wins in every year. Below it, find your break-even point by adding $283 to the saving, and ask honestly which side of that line most of your years will land on.
3. Decide where the $2,950 would come from in a bad year. If the answer is a specific account, the plan is workable. If the answer is a credit card, it is not.
4. Decide the plan you want to hold at 80, not just at 65, because underwriting stands between you and a later change.
5. Buy inside your open enrollment window if you can, whichever Plan G you pick, so the choice is made on price rather than on health questions.

The verified 2026 Medicare figures this post relies on, including the $283 Part B deductible and the $1,736 Part A deductible, are collected in the 2026 Medicare numbers, verified.

Virginia Barausky works through this comparison with Tampa Bay and Florida clients regularly, with the county rates in front of her rather than a national average. If you would like standard Plan G, high-deductible Plan G and Plan N priced against your own numbers, schedule a call. There is no cost and nothing to decide on the first conversation.