Home › Knowledge › Medicare Supplement (Medigap)
Vedanth Bhartee
Writer · Reviewed by Richard ChanUpdated Jun 12, 2026
7 min read
Medicare Supplement Plan F covers the Medicare Part B deductible, while Plan G requires the beneficiary to pay this deductible out-of-pocket before coverage begins.
Both Plan F and Plan G cover 100% of Medicare Part B excess charges, which are the extra costs if a doctor charges more than the Medicare-approved amount.
Plan F is only available to beneficiaries who were eligible for Medicare before January 1, 2020, making Plan G the most comprehensive option for newly eligible enrollees.
Navigating the transition into retirement should be about enjoying your golden years, not stressing over unpredictable medical bills. Securing the right Medicare Supplement plan—often referred to as a Medigap plan—is an essential step in shielding your life savings from the crushing weight of out-of-pocket healthcare costs. However, staring down a long list of confusing plan options can quickly leave even the savviest beneficiaries feeling entirely overwhelmed.
When beneficiaries start searching for true peace of mind, two titans always rise to the top: Medigap Plan F and Medigap Plan G. These are arguably the most robust, comprehensive safety nets available on the market, but deciding between the two requires a careful look at the fine print.
In this breakdown, we strip away the jargon to directly compare Medicare Plan F vs. Plan G, empowering you to make a confident, financially sound decision that perfectly aligns with your unique healthcare journey.
To understand the battle between Plan F and Plan G, you first need to grasp exactly what a Medigap plan actually does. Think of these policies as the heavy reinforcements to Original Medicare, which is composed of Part A (Hospital Insurance) and Part B (Medical Insurance). While Original Medicare is a fantastic foundation, it is riddled with coverage gaps that can drain your bank account. Without a supplement, you are left completely vulnerable to hefty Part A hospital deductibles and a lingering, uncapped 20% coinsurance for nearly every doctor's visit or outpatient service under Part B. Medigap plans sweep in to plug those holes, absorbing those costs and delivering a far more reliable healthcare experience.
The beauty of the Medigap system is its strict standardization. By federal law, every insurance company must offer the exact same basic benefits for a specific lettered plan. This means a Plan G sold by one massive insurer offers the identical coverage as a Plan G sold by a smaller, local provider. This levels the playing field, allowing you to ruthlessly compare policies based solely on premium costs and customer service. Among the ten standardized plans (labeled A through N), Plans F and G consistently dominate the market due to their unparalleled, sweeping coverage.
If you are looking for the absolute gold standard of health insurance, Medicare Supplement Plan F is the undisputed king. It is the most exhaustive, iron-clad Medigap plan ever created, designed to systematically wipe out virtually every single out-of-pocket cost left behind by Original Medicare.
The true superpower of Plan F lies in its complete coverage of both the Part A and Part B deductibles. This means that whether you are rushed to the hospital for an emergency surgery or just visiting your specialist for a routine check-up, you will never have to scrape together cash to meet a deductible before your coverage kicks in. You simply flash your card, receive your care, and walk out without a medical bill.
For seniors managing chronic, complex conditions that require endless doctor visits, ongoing physical therapy, or frequent hospitalizations, the financial protection of Plan F is nothing short of life-changing. With your healthcare costs reduced to a predictable, flat monthly premium, the anxiety of medical debt is entirely removed from the equation.
Furthermore, Plan F acts as a shield against the dreaded Medicare Part B "excess charges." In rare cases, a doctor is legally allowed to charge you up to 15% more than the Medicare-approved rate for a service. With Plan F, those sneaky excess charges are paid in full, guaranteeing absolute financial peace of mind.
Plan G is widely considered the heir apparent to Plan F, offering almost a mirror image of the exact same stellar coverage, but with one pivotal difference. Plan G fiercely covers your Part A hospital deductibles and all Part A and Part B coinsurance. However, it explicitly refuses to cover the annual Medicare Part B deductible. This means that at the start of every year, you are solely responsible for paying that relatively small deductible out of your own pocket before your Plan G benefits take the wheel for outpatient services.
Even with that one gap, Plan G does not skimp on the high-end protections. Just like Plan F, it fully covers Medicare Part B excess charges. If a rogue specialist attempts to bill you above the Medicare-approved limit, Plan G steps in to absorb the hit, protecting your wallet.
So, why do so many people prefer Plan G? The secret lies in the math. Because you agree to shoulder the Part B deductible yourself, insurance companies frequently reward you with drastically lower monthly premiums compared to Plan F. More often than not, the annual savings you bank from those cheaper premiums easily overshadows the cost of paying the Part B deductible, making Plan G a fiercely economical powerhouse.
Deciding between Medigap Plan F and Plan G ultimately comes down to balancing your desire for absolute convenience against your desire for long-term savings.
Plan F is the ultimate luxury choice, engineered for beneficiaries who demand a true "zero out-of-pocket" experience at the doctor's office. You pay a higher premium for the privilege of never looking at a medical bill. However, there is a massive catch: due to federal legislation, Plan F is strictly off-limits to anyone who became eligible for Medicare after January 1, 2020. If you are a new enrollee, Plan F is permanently off the table.
Plan G is the modern champion. It is universally available to all new Medicare enrollees and offers 99% of the coverage that Plan F provides. While you have the minor nuisance of paying the Part B deductible once a year, the significantly lower monthly premiums generally result in a smarter, more cost-effective long-term strategy.
To make the smartest decision for your future, zero in on these critical factors:
Ultimately, your choice is deeply personal, hinging entirely on your risk tolerance, your current medical reality, and your retirement budget.
Yes, but it isn't always easy. Unless you are within your initial 6-month Medigap Open Enrollment period or trigger a specific "guaranteed issue right," federal law allows insurance companies to aggressively scrutinize your health before letting you switch. This process, known as medical underwriting, means they can deny your application or charge you exorbitant rates if you have pre-existing conditions. If you do successfully switch, take advantage of the 30-day "free look" period to ensure the new Plan G fits your needs before permanently dropping your old Plan F.
One of the greatest triumphs of Medigap plans—including both Plan F and Plan G—is their absolute freedom. They are not tied to restrictive HMO or PPO networks. You have the ultimate power to seek care from any doctor, specialist, or hospital anywhere in the United States, as long as that provider accepts Original Medicare.
Yes, exactly one thing will change. If you abandon Plan F for Plan G, you will instantly lose coverage for the annual Medicare Part B deductible. From that day forward, you are responsible for paying that cost out-of-pocket every year. Additionally, if you undergo medical underwriting to switch, be hyper-aware that the new insurer might force you to wait up to six months before they agree to cover any pre-existing health conditions.