High Deductible Plan G: Is the Lower Premium Worth the Risk?

How High Deductible Plan G Works in 2026

High Deductible Plan G (HDG) is a Medicare Supplement (Medigap) policy that mirrors the benefits of standard Medicare Supplement Plan G, but with one big twist: the plan does not pay anything until you have first paid a sizable annual deductible out of your own pocket.

For 2026, CMS set that deductible at $2,950, the same amount applied to the high-deductible versions of Plans F and J. That figure is an $80 increase from $2,870 in 2025 and represents a roughly 34% rise over the past six years (from $2,200 to $2,950), since the deductible is recalculated each year using the CPI-U. The deductible runs on a calendar year and resets every January 1.

Here is the basic flow:

1. You stay enrolled in Original Medicare (Parts A and B), just like with any other Medigap policy.
2. Medicare pays its share first on hospital and outpatient claims.
3. You pay the gaps Medicare leaves behind (the Part A deductible, the Part B deductible, your 20% coinsurance, copays, and so on).
4. Every dollar you pay toward those Medicare-approved gaps counts toward your $2,950 HDG deductible.
5. Once you reach $2,950 in qualifying out-of-pocket costs, HDG kicks in and covers everything standard Plan G would cover for the rest of the calendar year.

What counts toward the $2,950 deductible

This is where most consumers get confused. The HDG deductible is not separate from the cost-sharing you would normally pay. It is essentially a running tally of all Medicare-approved out-of-pocket spending. The following all count:

• Your Part A hospital deductible ($1,736 in 2026, per benefit period)
• Hospital coinsurance ($434/day for days 61-90, $868/day for lifetime reserve days) and skilled nursing facility coinsurance ($217/day for days 21-100) in 2026
• The annual Part B deductible ($283 in 2026)
• Your 20% Part B coinsurance for doctor visits, labs, imaging, and outpatient procedures
• Part B excess charges where applicable

What does not count: your monthly Medigap premium, your $202.90 standard Part B premium, Part D drug costs, dental, vision, hearing, and anything Medicare does not cover. For a broader look at where Original Medicare leaves you exposed, see what Medicare doesn't cover.

The Math: Lower Premium vs. Higher Out-of-Pocket Exposure

The trade-off with HDG is straightforward in principle: you pay a much lower monthly premium in exchange for accepting more financial risk if you actually use medical care. The question is whether the math works in your favor.

Real 2026 quote data shows just how cheap HDG can be. MoneyGeek's 2026 analysis pegs the national average HDG premium at roughly $61 per month for a 65-year-old, compared to about $220 for standard Plan G. Actual quotes for a 65-year-old female from the lowest-priced carrier in each market include $29.39 in Topeka, KS, $30.60 in Charlotte, NC, $34.15 in Lansing, MI, $38.12 in San Francisco, CA, and $67.77 in Bradenton, FL. Most enrollees see monthly premium savings of $100 to $150 versus standard Plan G, or roughly $1,200 to $1,800 per year.

A sample comparison

Here is a realistic 2026 scenario for a 67-year-old non-smoker in an average-cost market:

The breakeven calculation is simpler than it looks. If HDG saves you about $1,440 per year in premium, HDG remains the cheaper plan as long as your Medicare-approved out-of-pocket costs stay below roughly $1,510 for the year ($2,950 deductible minus $1,440 in premium savings). Blow past that, and standard Plan G wins.

One more consideration worth flagging in 2026: Telos Actuarial data shows Plan G rate increases averaging 14.1% across the industry, with Q1 2026 filings from the six largest carriers ranging from just over 12% to more than 26%, and outliers like Chubb at 45% and Asuris Northwest in Alaska at 55.6%. HDG has been an exception. Telos reports HDG open-block increases averaging just 10.1% in 2026, the first time HDG has crossed into double digits but still meaningfully below Plan G. HDG blocks also absorb smaller absolute-dollar increases because they start from a lower base. A 10% hike on a $60 HDG policy is $6 per month, while a 14% hike on a $200 standard Plan G is $28 per month. For a deeper dive on typical Medigap pricing patterns and projected 2026 carrier increases, see our 2026 Medigap cost guide.

Who Should Choose High Deductible Plan G (and Who Should Avoid It)

HDG is not a one-size-fits-all product. It is a calculated bet on continued good health, and that bet pays off for some enrollees and backfires badly for others.

Ideal candidates for HDG

• Healthy enrollees with few annual doctor visits and no significant chronic conditions
• Budget-conscious shoppers who want the lowest possible Medigap premium
• Catastrophic-only buyers who view Medigap as protection against worst-case scenarios, not first-dollar coverage
• Enrollees with cash reserves who can comfortably absorb a $2,950 surprise medical bill
• Younger Medicare beneficiaries (ages 65 to 70) whose premium savings compound over many years

Who should avoid HDG

• People with diabetes, COPD, heart disease, or other chronic conditions that drive regular specialist visits
• Anyone expecting major surgery, joint replacement, or cancer treatment in the near future
• Enrollees on a fixed income who cannot easily come up with $2,950 in any given year
• People who would lose sleep worrying about a large bill before coverage kicks in

Top Carriers Offering High Deductible Plan G in 2026

Not every Medigap insurer offers HDG, and availability varies by state. The carriers most consistently selling competitive HDG policies in 2026 are well-established national names that also dominate the standard Plan G market. NerdWallet names Mutual of Omaha as best for HDG in 2026, and independent advisors highlight Aetna and UnitedHealthcare as top national options as well. To compare insurer strength head to head, see our ranking of the best Medigap companies.

When shopping, focus less on brand and more on the actual rate for your ZIP code, age, and tobacco status. Two carriers can quote HDG rates that differ by $30 or more per month for the exact same coverage, since benefits are standardized by federal law. For a wider review, see our best Medicare Supplement plans of 2026 and our deep dive on the HealthSpring/Cigna Medigap review.

Common Misconceptions About the HDG Deductible

The biggest source of confusion is how the HDG deductible relates to the Medicare Part B deductible. Many shoppers assume they are separate buckets. They are not.

Myth 1: "I'll pay the $283 Part B deductible and a $2,950 HDG deductible." Wrong. The $283 you pay for the Part B deductible counts directly toward the $2,950 HDG deductible. You are not double-paying.

Myth 2: "My Medigap premium counts toward the deductible." No. Premiums never count toward the HDG deductible. Only out-of-pocket spending on Medicare-approved Parts A and B services counts. Your $202.90 monthly Part B premium does not count either.

Myth 3: "HDG has worse coverage than standard Plan G." Coverage is identical once the deductible is met. The only difference is when the plan starts paying. After you meet $2,950, HDG behaves exactly like standard Plan G for the rest of the calendar year, including foreign travel emergency benefits. To see how all the plan letters stack up, browse our Medigap plans comparison chart.

Myth 4: "Drug costs and dental count toward the deductible." They do not. Part D prescriptions, dental, vision, and hearing services have nothing to do with the HDG deductible. If you want drug coverage, you still need a standalone Part D plan.

Myth 5: "I can switch to standard Plan G if I get sick." Possibly, but it usually requires medical underwriting outside your initial Medigap Open Enrollment Period. If you develop a serious condition on HDG, you may be stuck there. This is why HDG is best chosen as a long-term commitment, not a short-term experiment. If you are weighing your options now, our comparison of Medigap vs. Medicare Advantage and of Plan N versus Plan G can help frame the choice. State rules also matter, so check the Medigap rules by state before locking anything in.

Frequently Asked Questions

What is the High Deductible Plan G deductible for 2026?

For calendar year 2026, the annual deductible for High Deductible Plan G is $2,950, as set by CMS. This same amount applies to the high deductible versions of Plans F and J. The figure is adjusted annually based on the Consumer Price Index, so it generally increases each year, up $80 from the $2,870 amount in 2025.

Does the Part B deductible count toward my HDG deductible?

Yes. The $283 Medicare Part B deductible for 2026 counts directly toward the $2,950 HDG deductible. You only pay it once, and it serves both purposes simultaneously. The same applies to your $1,736 Part A hospital deductible, Part B coinsurance, and other Medicare-approved cost-sharing.

How much can I save with HDG versus standard Plan G?

Most enrollees save $100 to $150 per month, or roughly $1,200 to $1,800 per year, on premiums alone. The actual savings depend on your state, age, gender, and tobacco status, with HDG quotes running as low as about $30 per month in low-cost markets and $70 to $110 in high-cost states like Florida and New York. The catch is that if you use enough medical care to hit your deductible, those premium savings get partially or fully erased.

Is High Deductible Plan G a good choice if I'm healthy?

For most healthy enrollees with low expected medical use, HDG offers excellent value because you collect premium savings every year regardless of usage. The risk is that your health can change, and switching back to standard Plan G later may require medical underwriting. If you have meaningful cash reserves and stable health, HDG is worth strong consideration.

Can anyone enroll in High Deductible Plan G?

High Deductible Plan G is available to anyone who became eligible for Medicare on or after January 1, 2020. People eligible before that date may still purchase High Deductible Plan F instead. As with all Medigap plans, you get the best pricing and guaranteed acceptance when you enroll during your six-month Medigap Open Enrollment Period that begins when you turn 65 and enroll in Part B. A licensed Medigap broker or direct carrier can confirm availability in your ZIP code.