Is a Medicare Supplement Plan Worth the Cost?
When you first enroll in Medicare, you quickly discover that Original Medicare (Part A and Part B) does not cover everything. There are deductibles, coinsurance, and copayments that can add up quickly. This is where Medicare Supplement Plans, also known as Medigap, come into play. These private insurance policies are designed to fill the gaps left by Original Medicare. But is it worth getting a Medicare Supplement Plan? The answer depends on your health needs, budget, and tolerance for unexpected medical bills. In this article, we will break down the costs, benefits, and trade-offs so you can make an informed decision.
How Medicare Supplement Plans Work
Medicare Supplement Plans are standardized by the federal government. This means that a Plan G from one insurance company offers the same basic benefits as a Plan G from another company. The key difference is the monthly premium. These plans pay for some or all of the out-of-pocket costs that Original Medicare does not cover. For example, after you meet the Part B deductible, a Plan G policy will pay for your Part B coinsurance (20% of the Medicare-approved amount) for the rest of the year. This can save you thousands of dollars if you need surgery, hospitalization, or expensive outpatient treatments.
There are ten standardized Medigap plans labeled A through N. Each plan offers a different level of coverage. The most popular plans today are Plan G and Plan N because they provide a strong balance of coverage and cost. Plan F is also popular but is only available to people who became eligible for Medicare before January 1, 2020. If you are new to Medicare, you cannot enroll in Plan F. For a deeper look at one of these popular options, see our guide on AARP Medicare Supplement Plan G to understand how it covers the 20% coinsurance gap.
What Does a Medicare Supplement Plan Cover?
A Medicare Supplement Plan covers the following cost-sharing items, depending on the plan you choose:
- Part A coinsurance and hospital costs up to an additional 365 days after Medicare benefits are used up
- Part B coinsurance or copayment (this is usually 20% of the cost for services like doctor visits and outpatient care)
- Blood (first three pints)
- Part A hospice care coinsurance or copayment
- Skilled nursing facility care coinsurance
- Part A deductible
- Part B deductible (only covered by Plan F and Plan C, which are no longer available to new enrollees)
- Foreign travel emergency care (up to plan limits)
As you can see, the coverage is comprehensive. For most people, the biggest financial risk is the Part B 20% coinsurance, which has no annual cap. If you have a serious illness like cancer or need a joint replacement, that 20% can amount to tens of thousands of dollars. A Medigap plan eliminates that risk entirely for the covered services. We discuss this further in our article on AARP Medicare Supplement Plan N, which has a slightly different cost-sharing structure for doctor visits and emergency room visits.
The Cost of a Medicare Supplement Plan vs. the Financial Risk
The monthly premium for a Medigap plan varies by state, age, and insurer. On average, you can expect to pay between $100 and $300 per month for a Plan G. That is an annual cost of $1,200 to $3,600. Compare that to the potential out-of-pocket costs under Original Medicare alone. In 2026, the Part A deductible is $1,676 per benefit period, and the Part B deductible is $257 per year. But the real risk is the Part B 20% coinsurance. If you have a hospital stay that costs $50,000 (Medicare-approved amount), your 20% share would be $10,000. A single hospitalization could wipe out your savings.
Now consider this: if you pay $200 per month for a Medigap plan, that is $2,400 per year. Over ten years, that is $24,000. But without the plan, one major health event could cost you that much or more in a single year. The question of “is it worth getting a Medicare Supplement Plan” becomes a question of risk tolerance. If you have significant savings and can afford to pay 20% of large bills, you might choose to self-insure. But for most retirees on a fixed income, the predictable monthly premium is far easier to manage than a surprise $10,000 bill.
Comparing Medigap to Medicare Advantage
Many people wonder whether they should get a Medicare Supplement Plan or a Medicare Advantage plan (Part C). These are two very different approaches. Medicare Advantage plans replace Original Medicare and often have low or $0 monthly premiums. However, they come with network restrictions, copayments, and prior authorizations. A Medigap plan, on the other hand, allows you to see any doctor or hospital that accepts Medicare, anywhere in the country. There are no networks, and you generally do not need referrals or prior approvals.
If you travel frequently or live in multiple states during the year, a Medicare Supplement Plan is usually the better choice. The flexibility is unmatched. Additionally, if you have chronic conditions that require seeing specialists, a Medigap plan gives you the freedom to choose without worrying about network rules. However, the trade-off is the higher monthly premium. For some people, the lower premium of a Medicare Advantage plan is more attractive, especially if they are healthy and rarely use healthcare services. But keep in mind that if your health declines, you may not be able to switch from Medicare Advantage to a Medigap plan without medical underwriting (which could result in a denial or higher premium).
When Does It Make Sense to Buy a Medicare Supplement Plan?
There is a specific window of time when buying a Medigap plan is easiest and most affordable. This is called the Medigap Open Enrollment Period. It begins when you are both 65 or older and enrolled in Medicare Part B. This period lasts for six months. During this time, insurance companies cannot deny you coverage or charge you a higher premium based on pre-existing conditions. This is called guaranteed issue. If you wait until after this period to buy a plan, you may be subject to medical underwriting, and you could be denied or charged a higher rate.
If you are in good health and have the financial means, buying a plan during your open enrollment period is almost always worth it. It locks in your coverage regardless of future health changes. After the open enrollment period, you may still be able to buy a plan, but it will be harder and more expensive. Some states have additional protections, but in most states, you will face underwriting. Therefore, the best time to decide is when you first become eligible.
Which Medigap Plan Should You Choose?
With so many plan options, it can be confusing. Here is a simple breakdown to help you decide:
- Plan G: This is the most popular plan for new enrollees. It covers everything except the Part B deductible ($257 in 2026). After you pay that deductible, the plan covers 100% of your Part B coinsurance for the rest of the year. It is a great balance of cost and coverage.
- Plan N: This plan has a lower monthly premium than Plan G, but you pay a small copayment for some services. For example, you pay up to $20 for some doctor visits and up to $50 for emergency room visits (if not admitted). It is a good option if you want to save on premiums and are comfortable with small copays.
- Plan F: Only available to those eligible before 2020. It covers the Part B deductible as well. If you are already enrolled in Plan F, you can keep it.
- High-Deductible Plan G: This plan has a very low monthly premium, but you must pay a deductible (around $2,800 in 2026) before the plan starts paying. It is a good option for those who want catastrophic coverage only.
For more details on Plan G from a specific provider, read our review of ACE Medicare Supplement Plan G to see how it compares on pricing and customer service.
Frequently Asked Questions
Is it worth getting a Medicare Supplement Plan if I am healthy?
Even if you are healthy today, accidents and unexpected illnesses happen. The purpose of a Medigap plan is to protect you from financial catastrophe. If you can afford the monthly premium, it is often worth it for the peace of mind alone. You can think of it as an insurance policy for your health insurance.
Can I get a Medicare Supplement Plan with a pre-existing condition?
Yes, but only during your Medigap Open Enrollment Period. During that six-month window, insurance companies cannot deny you or charge you more because of a pre-existing condition. After that period, you may be subject to medical underwriting, and you could be denied or charged a higher premium.
Do Medicare Supplement Plans cover prescription drugs?
No. Medicare Supplement Plans do not cover prescription drugs. You will need to enroll in a separate Part D prescription drug plan if you want drug coverage. You can enroll in a Part D plan at the same time you buy a Medigap policy.
Can I switch Medicare Supplement Plans later?
Yes, but you may face medical underwriting if you switch to a different plan or a different insurance company. Some states have special rules that allow you to switch during certain periods without underwriting. In general, it is best to choose the right plan the first time.
How do I enroll in a Medicare Supplement Plan?
You can enroll through a licensed insurance agent, directly from an insurance company, or through online comparison tools. NewMedicare.com can help you compare plans and connect with licensed agents who can assist with enrollment. For more information, you can also read our guide on AARP Medicare Supplement Plan F to see how one popular provider structures its plans.
Deciding whether a Medicare Supplement Plan is worth the cost comes down to your personal situation. If you value predictable costs, freedom to choose any doctor, and protection from high medical bills, a Medigap plan is an excellent investment. The monthly premium is a small price to pay for financial security in your retirement years. Take advantage of your open enrollment period to lock in the best rates and coverage. And if you are still unsure, speak with a licensed agent who can walk you through your options based on your health and budget. For personalized assistance, call us at 833-203-6742.
