Medicare Supplement Cost in Rockford, IL: What You’ll Pay in 2026
There is no single price for a Medicare Supplement plan in Rockford. Every company that sells Plan G sells the same benefits, so the premium for a given letter depends on the insurer, your age, your ZIP code and, in some cases, your health. The same Rockford resident can get quotes that differ by tens of dollars a month for identical coverage. Getting your own side-by-side quotes for the same letter is the only way to find your real number, and that is the comparison we do for Rockford-area clients at Almond Insurance.
This guide explains what moves the price, what the plan letters buy you, and which other Medicare costs sit on top of the premium. It is written for people turning 65, people reviewing a plan they already have, and family members helping them.
TL;DR
- A Medicare Supplement (Medigap) premium is set by the insurer, the plan letter, your age and your location. The benefits for each letter are the same from every company, so price is the main difference.
- Plan G and Plan N are the letters most new enrollees compare. Plan G has a higher premium and leaves you with one yearly deductible. Plan N has a lower premium and adds small copays.
- Your Medigap premium is separate from the Part B premium, which is $202.90 a month in 2026 for most people.
- The six months after your Part B starts is the best time to buy, because the insurer cannot charge you more for your health.
- Compare quotes for the same letter across several insurers before you choose.
Table of Contents
- What a Medigap premium is (and is not)
- Why Rockford quotes differ for the same plan
- What each plan letter covers
- A worked example: Plan G versus Plan N
- The costs outside your Medigap premium
- Timing: the biggest lever on your premium
- How to compare Medigap quotes in Rockford
- Where Almond Insurance fits
- Is a Supplement the right fit compared with Medicare Advantage?
- FAQ
- Sources
What a Medigap premium is (and is not)
Medicare Supplement insurance, also called Medigap, is sold by private insurers. It pays part of what Original Medicare leaves you to pay: deductibles, coinsurance and, depending on the letter, some other gaps. You pay the Medigap premium to the insurance company each month, and it is separate from your Part B premium. Premiums also typically rise from year to year.
Two things follow from that. First, a quoted Medigap price never includes Part B. Second, a Medigap plan does not add dental, vision or drug coverage. Those are handled by other plans, such as Part D for prescriptions.
Why Rockford quotes differ for the same plan
Medicare.gov says Medigap premiums vary by insurer, plan and location. It also says that policies with the same letter provide the same benefits no matter which company sells them, so the main difference is price, which can be substantial from one company to the next. In Illinois, one state regulator’s 2027 plan guide gives an example of the same plan letter priced around double by two different companies. The exact gap changes every year, which is why a number you saw online last spring is not a number you can plan around.
Here are the factors that explain the spread.
How the insurer sets its prices
Insurers price Medigap in one of three ways, and Medicare.gov lists them as something to ask about before you compare:
- Attained-age pricing: the premium starts low and rises as you get older.
- Issue-age pricing: the premium is based on the age you were when you bought, and does not rise because you age (it can still rise with inflation and claims).
- Community-rated pricing: everyone pays about the same regardless of age.
A plan that looks cheapest at 65 can cost more than a competitor by 75 if it is priced by attained age. When we compare plans for a client, we look at how each premium is likely to behave over time, not only the first-year figure.
Discounts
Some insurers offer discounts, for example for a household with two people on the same company’s plans, or for paying a certain way. Medicare.gov lists discounts as one of the things that change cost. Ask each insurer what applies to you.
Your health and when you apply
This is the factor with the largest effect, and the one people most often miss. If you apply outside a protected window, most insurers can look at your health history and may charge more or decline you. That is called medical underwriting. During your Medigap Open Enrollment Period, they cannot. More on that below.
SELECT policies and high-deductible options
A Medigap SELECT policy uses a network of hospitals and sometimes doctors, and usually costs less in return. A high-deductible version of Plan G or Plan F has a much lower premium but you pay covered costs yourself until you reach a deductible. Medicare.gov lists both among the reasons prices differ.
What each plan letter covers
Medigap benefits are standardized by federal rules. In Illinois, the Department on Aging’s 2026 Medicare Choices guide says plans follow a common benefit structure, although not every company sells every plan. Here is how the letters most people ask about compare.
| Feature | Plan G | Plan N | Plan F |
|---|---|---|---|
| Part A deductible | Covered | Covered | Covered |
| Part B coinsurance | Covered | Covered, with copays of up to $20 for some office visits and $50 for ER visits without admission | Covered |
| Part B deductible ($283 in 2026) | You pay | You pay | Covered |
| Part B excess charges | Covered | Not covered | Covered |
| Open to new enrollees | Yes | Yes | Only if first eligible for Medicare before January 1, 2020 |
The benefit details come from the Florida regulator’s 2026 Medigap FAQ and the Medicare.gov benefit chart. Since benefits are federally standardized, they hold in Illinois as well. The $283 Part B deductible and $1,736 Part A deductible for 2026 are also stated in the Nebraska Department of Insurance fact sheet.
Plan G: one deductible, then predictable
Plan G pays nearly everything Original Medicare leaves behind except the Part B deductible. According to one insurer’s 2026 Plan G booklet, that includes the $1,736 Part A deductible, hospital coinsurance of $434 a day for days 61 to 90, and 100% of Part B excess charges. After you pay the $283 Part B deductible once a year, Medicare-approved care is covered. For people who want few surprises, that is the draw.
Plan N: lower premium, small copays
Plan N covers the same hospital costs, but it does not pay Part B excess charges, and it has copays of up to $20 per office visit and up to $50 per emergency room visit. The $50 copay is waived if you are admitted to the hospital. If you see doctors a handful of times a year and your doctors accept Medicare’s approved amount, Plan N can be a good fit.
Plan F: only for those eligible before 2020
Plan F covers the Part B deductible, but it is not sold to people who became eligible for Medicare on or after January 1, 2020. If you are turning 65 now, you will be comparing G and N, not F. If you already have Plan F, you can keep it.
High-deductible Plan G
The high-deductible version of Plan G has the same benefits as regular Plan G once you pay a $2,950 deductible in 2026. It has a lower monthly premium, so it suits people who are generally healthy and want protection against a large bill. We explain the math in Is $2,950 Worth It? Medicare’s High Deductible Plan G.
A worked example: Plan G versus Plan N
The cheapest premium is not always the cheapest year. Here is how to think about it, using only the 2026 cost-sharing amounts above and leaving the premium as a placeholder, because your quotes will be your own.
Suppose a Rockford client has six doctor office visits in a year and one emergency room visit without admission.
- Plan G: you pay the $283 Part B deductible. Nothing else for those visits, since Plan G covers the Part B coinsurance.
- Plan N: you pay the $283 Part B deductible, plus up to $20 for each of six office visits (up to $120) and up to $50 for the ER visit. That is up to $170 in copays on top.
So in a busy year, Plan N costs up to $170 more in out-of-pocket costs than Plan G. Whether Plan N wins depends on how much lower its monthly premium is. If the Plan N quote is more than about $14 a month lower than the Plan G quote for the same company (about $170 divided by 12), Plan N likely comes out ahead in a year like this one. If the premiums are close, Plan G is the steadier choice. In a year with a hospital stay, a few more visits or a provider who charges above Medicare’s approved amount, the picture shifts toward Plan G, because Plan N does not cover excess charges.
This kind of arithmetic is easy to get wrong when you are looking at a dozen quotes. When we sit down with someone, we run it with their doctor visits and prescriptions in mind.
The costs outside your Medigap premium
Budgeting only for the Medigap premium is the most common mistake we see in first-time budgets. Add these:
- Part B premium: CMS set the standard Part B premium at $202.90 a month for 2026. Higher-income households pay more. CMS publishes the new figures each autumn, so check the current year’s amount.
- Part D premium: Medigap plans do not cover prescriptions. A separate drug plan has its own premium and cost sharing. Our Part D prescription review looks at the drugs you actually take.
- Dental, vision and hearing: not covered by Medigap.
For a full breakdown of the other Medicare numbers, see Medicare Costs in 2026: Premiums, Deductibles and Caps. For our deeper look at supplement pricing, see Medigap Costs in 2026: What You’ll Pay and Why.
Timing: the biggest lever on your premium
Your Medigap Open Enrollment Period generally lasts six months after your Part B starts, once you are 65 or older. During it you can buy any Medigap policy sold in Illinois, even with health problems. CMS guidance says that in this window an issuer may not deny, condition or price coverage differently because of health status.
Miss the window and you may face medical questions. A condition such as heart disease or diabetes can mean a higher premium or a denial with some companies. That is why the six months matter more than any discount.
A few other situations give you rights as well:
- Losing Medicaid: the Illinois Department of Insurance says people whose Medicaid ended in certain circumstances after June 16, 2023 have a 63-day guaranteed-issue right. This is a targeted rule, not an extension of everyone’s open enrollment.
- Other guaranteed-issue events: see Medigap Guaranteed Issue Rights: When You Can Buy.
Illinois’s birthday rule
The National Association of Insurance Commissioners’ state chart lists Illinois as having a birthday rule: a window of 45 days from your birthday in which you can switch to another plan with equal or lower benefits. This matters because if your premium climbs, you may be able to move to a cheaper insurer without being turned down for your health. Because the rule has conditions, confirm how it applies to your policy before relying on it.
How to compare Medigap quotes in Rockford
- Pick the letters first. Decide whether you are weighing G, N or high-deductible G. Compare only the same letter across insurers.
- Get quotes with your ZIP code and date of birth. Rockford ZIP codes can price differently from nearby areas, and your age sets the starting rate.
- Ask how each insurer prices. Attained age, issue age or community rated. This decides what you pay in five or ten years.
- Ask about discounts. Household and payment discounts differ by company.
- Check the SELECT option. If a network plan is cheaper, confirm your hospitals are in it.
- Confirm your timing. Are you in your six-month window, or will the insurer ask health questions?
- Add the rest of the bill. Part B, Part D and any other coverage.
Medicare.gov’s own advice is to compare the same letter across insurers, get a company quote, and contact the state insurance department or SHIP, the state health insurance assistance program, for local help.
The heavy lifting is steps two through five. We do them as part of our Medicare Supplement and Medigap guidance, which is designed to explain the options in plain language and then leave the decision to you.
Where Almond Insurance fits
We are a Medicare insurance agency in Rockford, and our approach is local and family-focused, with plain-language conversations instead of jargon. We compare Medicare Supplement, Medicare Advantage and Part D plans for people in Northern Illinois and Southern Wisconsin, help with enrollment, and do yearly coverage reviews. Consumers do not pay us directly for the advice. We are paid by the insurance carrier when a client enrolls in a plan through us.
If you are turning 65, or want to see whether your current plan still fits, start with our Medicare plan comparison help. If you are not yet sure which path you are on, our new-to-Medicare guidance walks through the order of decisions. Caregivers are welcome to join the conversation, and you pay nothing if you only want information.
Is a Supplement the right fit compared with Medicare Advantage?
A Supplement sits on top of Original Medicare, lets you see any provider that accepts Medicare, and carries a monthly premium in exchange for lower and more predictable out-of-pocket costs. Medicare Advantage is a different kind of plan that replaces Original Medicare and works through a network. Which one fits depends on your doctors, prescriptions, travel and budget. Our article on Medicare Advantage costs shows the other side of the ledger, and if you are on a tight income, Medicare Savings Programs in Illinois can help with Medicare costs.
FAQ
What is the average cost of a Medicare Supplement plan in Rockford?
There is no official average for Rockford, and published ranges vary widely by plan letter, age and insurer. Medicare.gov confirms that the same letter can cost very different amounts from company to company. The reliable number is a set of quotes for your age, ZIP code and plan letter.
Is Plan G or Plan N cheaper?
Plan N usually has the lower monthly premium, but you pay copays of up to $20 for some office visits and up to $50 for ER visits, and Part B excess charges are not covered. Plan G costs more each month and leaves you with only the $283 Part B deductible in 2026. Compare the premium gap against your expected visits.
Can I buy Plan F in 2026?
Only if you were first eligible for Medicare before January 1, 2020. People who became eligible on or after that date can choose Plan G, Plan N and other plans, but not Plan F. High-deductible Plan G is the closest alternative to high-deductible F.
Does my Medigap premium include Part B and drug coverage?
No. You pay the Medigap premium to your insurer, the Part B premium separately ($202.90 a month in 2026 for most people), and any Part D premium to a drug plan. Budget for all three.
When is the best time to buy a Medicare Supplement?
During the six months after your Part B starts, when you are 65 or older. In that window an insurer cannot deny you or charge more because of your health. Outside it, you may be asked health questions unless a guaranteed-issue right applies.
Sources
- Get Medigap costs, Medicare.gov
- Buying a Medigap policy, Medicare.gov
- Compare Medigap Plan Benefits, Medicare.gov
- 2026 Medigap Frequently Asked Questions, Florida Office of Insurance Regulation
- Medicare Choices Guide for 2026, Illinois Department on Aging
- Medicare Supplement Fact Sheet 2026, Nebraska Department of Insurance
- Med Supp Plan G Booklet 2026
- Med Supp Plan N Booklet 2026
- 2026 Medicare Parts A & B Premiums and Deductibles, CMS
- Program Memorandum on Medigap open enrollment, CMS
- Consumer notice on Medicare coverage after Medicaid disenrollment, Illinois Department of Insurance
- State Medigap Rules: Birthday Rule chart, NAIC