How Much Is Medicare Supplement Insurance in 2025

If you are approaching 65 or already enrolled in Original Medicare, you have likely asked yourself how much is Medicare supplement insurance going to cost. The short answer is that Medigap premiums range from roughly $50 to over $300 per month depending on your plan choice, location, age, and insurer. But the real question is not just the premium. It is about what you get for that money and how to avoid surprise out-of-pocket costs later. Understanding the full picture of Medigap pricing can save you hundreds of dollars each year and protect your finances during a health crisis.

What Determines the Cost of a Medicare Supplement Plan

Medicare supplement plans, also called Medigap, are standardized by the federal government. That means Plan G from one insurance company covers exactly the same benefits as Plan G from another company. However, the monthly premium can vary dramatically between insurers. The main factors that influence how much is Medicare supplement coverage include your age at enrollment, your gender, your ZIP code, and whether the insurer uses a community-rated, issue-age-rated, or attained-age-rated pricing model.

Community-rated plans charge the same premium to everyone regardless of age. Issue-age-rated plans set your premium based on how old you are when you first buy the policy, and that rate only increases with inflation and medical trends. Attained-age-rated plans start lower but increase every year as you get older, which can make them more expensive over the long term. When comparing plans, you should ask each insurer which pricing method they use. A seemingly cheap plan today could double in cost over a decade if it is attained-age rated.

Another factor is the discount for household or spouse policies. Many insurers offer a 5 to 10 percent discount if you and your spouse both enroll in a Medigap plan with the same company. Some also offer discounts for paying annually instead of monthly, enrolling online, or being a nonsmoker. These discounts can reduce how much is Medicare supplement insurance by a meaningful amount each year.

Average Premiums for Popular Medigap Plans

To give you a realistic idea of costs, here are average monthly premiums for the three most popular Medigap plans based on 2025 data from a typical 65-year-old male in a mid-cost state like Ohio.

• Plan G: $120 to $180 per month. This plan covers everything except the Part B deductible ($257 in 2025). It is the most popular choice because it offers near-complete coverage with a predictable premium.
• Plan N: $90 to $140 per month. Plan N requires small copays for doctor visits ($20) and emergency room visits ($50) and does not cover Part B excess charges. It is a good lower-cost alternative if you do not mind occasional copays.
• Plan F: $140 to $210 per month. Plan F covers everything including the Part B deductible, but it is only available to people who became eligible for Medicare before January 1, 2020. If you are new to Medicare, you cannot buy Plan F.

These averages can shift by $50 or more depending on where you live. For example, a Plan G premium in Florida might be $160, while the same plan in New York could be $250. The best way to know exactly how much is Medicare supplement coverage in your area is to use a comparison tool or speak with a licensed agent who can pull rates from multiple carriers at once.

How Deductibles and Out-of-Pocket Limits Affect Your Total Cost

While the monthly premium is the most visible cost, your total expense also depends on what the plan does not cover. For Plan G, you must pay the Medicare Part B deductible of $257 each year before the plan starts paying. For Plan N, you also pay that deductible plus copays of up to $20 per doctor visit and $50 per ER visit. If you visit the doctor frequently, those copays can add up to several hundred dollars annually.

Medigap plans do not have annual out-of-pocket maximums like Medicare Advantage plans do. That is both a strength and a weakness. A Medicare Advantage plan caps your spending at around $8,000 per year, but Medigap has no such cap. However, because Medigap covers most cost-sharing, your actual out-of-pocket costs are usually limited to deductibles and copays. The trade-off is that Medigap premiums are higher than Medicare Advantage premiums, but you gain the freedom to see any doctor nationwide that accepts Medicare.

When evaluating how much is Medicare supplement insurance going to cost you, add the annual premium plus the Part B deductible and any copays. For Plan G, that total is roughly $1,700 to $2,400 per year. For Plan N, it is about $1,200 to $1,800 per year. These figures are far below the catastrophic costs of a hospital stay without supplemental coverage, which can easily exceed $10,000.

When to Enroll to Get the Best Price

Your Medigap open enrollment period is a six-month window that begins the month you turn 65 and enroll in Part B. During this period, insurance companies cannot deny you coverage or charge you more for pre-existing conditions. This is the only time you have guaranteed issue rights for any Medigap plan. If you wait until after this window closes, you may face medical underwriting and higher premiums or be denied coverage entirely.

Missing the open enrollment period is the most common reason people end up paying more for Medigap. If you have a health condition like diabetes or heart disease, insurers can legally charge you a higher rate or refuse to sell you a policy after your open enrollment ends. That is why it is critical to shop for plans as soon as you enroll in Part B. Waiting even a few months can change how much is Medicare supplement insurance for you permanently.

There are a few other situations where you have guaranteed issue rights, such as losing employer coverage, moving out of your plan’s service area, or dropping a Medicare Advantage plan within the first year. These are called trial rights and they give you a second chance to buy a Medigap plan without underwriting. Use them carefully because they are limited.

Comparing Medicare Supplement vs. Medicare Advantage Costs

Many people confuse Medigap with Medicare Advantage, but they work very differently. Medicare Advantage plans often have $0 monthly premiums and include drug coverage, but they require you to use a network of doctors and hospitals. Medigap plans have monthly premiums but let you see any doctor who accepts Medicare anywhere in the country. The choice between them often comes down to how much you value flexibility versus upfront cost.

If you are healthy and rarely go to the doctor, a Medicare Advantage plan may seem cheaper. But one serious illness or accident could expose you to thousands of dollars in copays and coinsurance. Medigap, by contrast, covers nearly all of that risk. The question of how much is Medicare supplement insurance becomes less about the monthly premium and more about the financial protection it provides. Many people find that paying $150 per month for Plan G is worth the peace of mind that a hospital stay will not bankrupt them.

For a deeper look at specific plan options, you can read our guide on AARP Medicare Supplement Plan G which explains the coverage details and typical costs. If you are considering Plan N, we also have a detailed breakdown of AARP Medicare Supplement Plan N to help you compare copay structures.

How to Lower Your Medigap Premium

Even though Medigap prices are regulated, you can still take steps to reduce your monthly cost. First, shop around. The same Plan G can cost $100 from one company and $180 from another. Because the benefits are identical, you should always pick the lowest-priced carrier that has a strong financial rating and good customer service. Second, consider a high-deductible Plan G. This plan has a much lower monthly premium, often $40 to $60, but you pay a $2,800 deductible before coverage kicks in. It works well if you want catastrophic protection without a high monthly payment.

Third, ask about discounts. Some insurers give a 5 percent discount for setting up automatic payments, a 7 percent discount for paying annually, or a 10 percent discount for enrolling online. Fourth, compare spouse policies. Two separate individual policies from the same company may be more expensive than a joint policy that covers both spouses. Finally, if you are still working past 65 and have employer coverage, you can delay Part B without penalty if you have creditable coverage. When you retire and enroll in Part B, you trigger a special enrollment period that gives you Medigap guaranteed issue rights again.

For those who want a more affordable option with similar coverage, ACE Medicare Supplement Plan G is a lesser-known but highly rated plan that often comes in at a lower price point than national carriers. It is worth checking rates from smaller regional insurers because they sometimes offer better pricing than the big names.

Frequently Asked Questions

How much is Medicare supplement insurance per month on average?

The national average for Plan G is roughly $130 to $180 per month for a 65-year-old. Plan N averages about $100 to $140 per month. Your exact rate depends on your age, location, and the insurer’s pricing method.

Can I switch Medigap plans later without a penalty?

You can switch plans at any time, but if you are outside your open enrollment period, you will likely need to pass medical underwriting. That means the insurer can charge you more or deny you based on your health. The only exception is during guaranteed issue windows, such as when you move out of your plan’s service area.

Does Medigap cover prescription drugs?

No. Medigap plans do not cover prescription drugs. You need to enroll in a separate Part D drug plan to get medication coverage. Some older Medigap plans that included drug coverage are no longer available to new enrollees.

Is Medigap worth it if I am healthy?

Yes, because health can change suddenly. A single hospital stay or surgery can cost tens of thousands of dollars under Original Medicare alone. Medigap protects you from those high costs. Many people find the monthly premium is a small price to pay for guaranteed coverage of all Medicare-approved services.

How do I find the best rate for Medigap?

Use a licensed insurance broker or an online comparison tool that shows rates from multiple carriers. You can also call each insurer directly and ask for a quote. Be sure to compare the same plan letter from different companies to get an apples-to-apples price.

If you are also considering other plan options, you can review the coverage details of AARP Medicare Supplement Plan F to see if the extra premium for deductible coverage is worth it for your situation.

Understanding how much is Medicare supplement insurance is the first step toward making a confident decision. The premiums are predictable, the benefits are standardized, and the protection is comprehensive. By shopping during your open enrollment period, comparing rates from multiple insurers, and choosing the right plan for your budget, you can secure affordable Medigap coverage that gives you peace of mind for years to come. For personalized help comparing plans and finding the lowest rate in your area, call a licensed agent or use a trusted comparison service. The time you invest upfront can save you thousands of dollars over the life of your policy.