Medicare in North Carolina 2027: Costs, Enrollment, and Advantage vs. Medigap

More than 2 million North Carolinians have Medicare, and every fall they get a chance to change how they're covered. Medicare open enrollment runs October 15 through December 7, 2026, for 2027 coverage. This year several things are changing at once: the Part D deductible and out-of-pocket cap are rising, the Part B premium is projected to go up again, and insurers have warned that many Medicare Advantage plans will cost more. This guide covers what Medicare costs in 2027, how income-based surcharges work, how to choose between Original Medicare with a Medigap policy and Medicare Advantage in North Carolina, the enrollment rules that trigger lifelong penalties, and how retirement income decisions affect what you pay. For the full retirement picture, see our guide to retiring in North Carolina.

Medicare Open Enrollment 2027 in North Carolina

Open enrollment is the one time each year when anyone with Medicare can switch plans without a special reason.

Key Dates

What You Can Change During Open Enrollment

Between October 15 and December 7 you can switch from Original Medicare to a Medicare Advantage plan or back, change from one Medicare Advantage plan to another, and join, drop, or switch a Part D drug plan. If you do nothing, your current plan renews, at its 2027 premium, copays, drug list, and network. Your plan was required to mail an Annual Notice of Change by the end of September that lists what's different. If you can't find it, the plan's website or Medicare's Plan Finder shows the same details. Medigap policies aren't part of open enrollment. They follow their own rules, covered below.

Free, Unbiased Help From SHIIP

North Carolina's Seniors' Health Insurance Information Program (SHIIP), part of the NC Department of Insurance, offers free one-on-one counseling on Medicare plans, drug coverage, and programs that lower costs. SHIIP counselors aren't insurance agents and don't sell or recommend specific companies. Call 1-855-408-1212 on weekdays from 8 a.m. to 5 p.m., or visit ncshiip.com to find a counselor in your county. Medicare itself answers at 1-800-MEDICARE (1-800-633-4227), and the Plan Finder at Medicare.gov compares every plan available in your ZIP code using your own drug list.

What Medicare Costs in 2027

Some 2027 amounts are final and some won't be announced until mid-November. Here's where each stands as of late October 2026.

Part A and Part B

Part A hospital insurance is premium-free for anyone with at least 10 years (40 quarters) of work under Social Security or a spouse with that record. Part B, which covers doctors, outpatient care, and tests, carries a monthly premium. CMS usually announces the next year's Part B premium and deductible in mid-November. The 2026 Medicare Trustees Report projects a standard 2027 Part B premium of about $209.50 a month, up from $202.90 in 2026, and a Part B deductible of about $292, up from $283. After the deductible, Part B pays 80% of approved costs and you pay 20%, with no annual limit unless you have a Medigap policy or Medicare Advantage plan. The Part A hospital deductible was $1,736 per benefit period in 2026, and the 2027 figure will rise.

Part D Drug Coverage

The 2027 Part D figures are final. They come from CMS's CY 2027 rate announcement:

The cap counts what you pay for covered drugs, not your monthly premium. Once you reach $2,400, you pay nothing for covered drugs for the rest of 2027. The $700 deductible is a ceiling; many plans charge less or nothing.

Help Paying Costs on a Limited Income

Two programs cut Medicare costs sharply for lower-income enrollees, and many people who qualify never apply. Medicare Savings Programs, run through NC Medicaid and your county Department of Social Services, can pay your Part B premium and, at the lowest income level, your deductibles and coinsurance too. Extra Help, run by Social Security, lowers Part D premiums, deductibles, and copays for people with income up to 150% of the federal poverty level and limited assets. That's about $23,940 a year for a single person under the 2026 guidelines. SHIIP can screen you for both programs in one call.

IRMAA: When Your Income Raises Your Premiums

Higher-income enrollees pay more for Part B and Part D through the income-related monthly adjustment amount, or IRMAA. This is where Medicare and tax planning meet.

How IRMAA Is Calculated

IRMAA is based on your modified adjusted gross income from two years earlier: your AGI plus tax-exempt interest. Your 2027 premiums depend on your 2025 tax return. Social Security gets the figure from the IRS automatically, so you don't apply for or report anything. It works in tiers, so being $1 over a threshold puts you in the higher tier for the entire year.

The 2026 IRMAA Tiers

The 2027 tiers, based on 2025 income, will be announced with the Part B premium in mid-November. The thresholds rise with inflation each year. Here are the 2026 tiers, based on 2024 income, to show how the structure works:

The surcharge applies per person. A married couple whose 2024 income came in at $220,000, just $2,000 over the first threshold, pays an extra $95.70 a month each, or about $2,300 a year combined, in 2026.

Appealing IRMAA After Retirement

Because IRMAA looks back two years, many new retirees get a surcharge based on their last full year of salary. If your income dropped because of a life-changing event, you can ask Social Security to use a more recent year on Form SSA-44. Qualifying events include stopping or reducing work, marriage, divorce, a spouse's death, and the loss of a pension. Retiring is the most common reason, and the appeal is usually approved when you document it. A one-time spike from selling a house or a Roth conversion doesn't qualify, so those need to be planned in advance.

Original Medicare With Medigap vs. Medicare Advantage

This is the biggest decision in Medicare. In North Carolina about half of beneficiaries choose each path.

How Each Option Works

Original Medicare (Parts A and B) lets you see any doctor or hospital in the country that takes Medicare, with no referrals. On its own it leaves you with 20% coinsurance and no out-of-pocket limit, so most people add a Medigap supplement policy to cover those gaps and a separate Part D drug plan. Medicare Advantage (Part C) replaces Original Medicare with a private plan, usually an HMO or PPO with a provider network. Most plans include drug coverage and extras such as dental, vision, and hearing benefits, and many charge no premium beyond Part B. You pay copays as you use care, up to an annual out-of-pocket limit. CMS caps that limit at $9,850 for in-network care in 2027, and most plans set lower limits.

Comparing the Costs

Here is a rough annual comparison for a 65-year-old in North Carolina, using the projected 2027 Part B premium. Medigap and drug plan premiums vary by insurer, age, and ZIP code. Check the NC Department of Insurance's Medicare supplement premium comparison and Medicare's Plan Finder for your actual prices.

Medigap costs more every month but makes medical costs predictable. Medicare Advantage costs less up front, and you take on more risk in a year with a hospital stay or cancer treatment.

Networks and NC Hospital Systems

Medicare Advantage networks in North Carolina are built around the big hospital systems, including Atrium Health, Novant Health, UNC Health, Duke Health, ECU Health, WakeMed, and Cone Health. Contracts between insurers and those systems change, sometimes mid-year. Before picking a plan, confirm that your doctors and the hospital you'd use in an emergency are in network for 2027, not just 2026. If you spend winters in another state or travel often, a PPO or Original Medicare is safer than an HMO. Original Medicare works at any provider that takes Medicare, which is nearly all of them.

Switching Later Is Harder Than It Looks

You can leave Medicare Advantage for Original Medicare during any open enrollment, but getting a Medigap policy afterward is not guaranteed. In North Carolina, Medigap insurers must sell you any policy they offer, without health questions, only during your six-month Medigap open enrollment period. That period starts the month you're 65 or older and enrolled in Part B. North Carolina has no "birthday rule" letting you switch later without underwriting. After the six months, insurers can deny you or charge more based on your health, with a few federal exceptions. One example: if you join Medicare Advantage when you first get Medicare and leave within 12 months, you can still buy a Medigap policy. If you think you'll eventually want Medigap, buying it at 65 is the safest choice.

Part D Drug Coverage in 2027

Drug coverage is where plans differ most from year to year, so it's worth comparing even if you're happy with your plan.

The $2,400 Cap and How Drug Costs Add Up

Every Part D plan, stand-alone or built into Medicare Advantage, now has the same 2027 out-of-pocket cap of $2,400 on covered drugs. Before you reach it, you pay the plan's deductible (up to $700) and then copays or coinsurance set by the plan. Plans still differ in which drugs they cover (the formulary), which tier each drug falls in, and which pharmacies are preferred. Those differences can change your costs by hundreds or thousands of dollars before you hit the cap. Enter every prescription in Medicare's Plan Finder each fall; a drug dropped from your plan's 2027 formulary is the most common surprise.

Spreading Costs With the Prescription Payment Plan

If you take expensive drugs, you could hit the $2,400 cap in January or February. The Medicare Prescription Payment Plan lets you pay those costs in monthly installments over the rest of the year instead of all at once at the pharmacy. It doesn't lower the total, and there's no interest or fee. Sign up through your plan before or during the year. Once you're in, your enrollment renews automatically unless you opt out.

Drug Coverage If You Have Other Insurance

If you have drug coverage through an employer, a union, the VA, or the NC State Health Plan, ask whether it's "creditable," meaning at least as good as standard Part D. Your plan must tell you each year. With creditable coverage you can skip Part D without a penalty. Without it, the Part D late enrollment penalty adds 1% of the national base premium for every month you went without coverage, for as long as you have Part D.

Signing Up for Medicare: Enrollment Windows and Penalties

Most Medicare penalties come from missing your first enrollment window, and they last for life.

Your Initial Enrollment Period

Your initial enrollment period lasts seven months: the three months before the month you turn 65, your birthday month, and the three months after. If you already get Social Security, you're enrolled in Parts A and B automatically. Otherwise you sign up through Social Security online, by phone, or at a local office. Enrolling in the months before your birthday month starts coverage on the first of your birthday month. If you're leaving marketplace coverage for Medicare, our NC health insurance marketplace guide explains why you need to end that plan yourself.

Working Past 65

If you or your spouse are still working and covered by an employer plan at a company with 20 or more employees, you can delay Part B without penalty. You then get an eight-month special enrollment period after the job or coverage ends, whichever comes first. COBRA and retiree coverage don't count as active employment coverage, so don't wait for COBRA to end. If you contribute to an HSA, stop contributions six months before you enroll in Medicare or start Social Security. Part A coverage is backdated up to six months, and contributions made during that time trigger a penalty. Our NC HSA guide covers the rules.

Late Enrollment Penalties

If you miss your window without other qualifying coverage, you can sign up during the general enrollment period from January 1 to March 31 each year. Coverage starts the month after you enroll. The Part B penalty adds 10% to your premium for each full 12 months you could have had Part B but didn't, and it lasts as long as you have Part B. Two years late means paying 20% more every month for the rest of your life.

How Retirement Income Affects What You Pay for Medicare

Because IRMAA uses income from two years back, the withdrawals, sales, and conversions you make in your early 60s set your Medicare premiums in your mid-60s.

Roth Conversions, RMDs, and Charitable Distributions

Roth conversions are a popular strategy in the years between retirement and required minimum distributions, but each converted dollar counts toward MAGI. A conversion that pushes a single filer $5,000 over the first IRMAA threshold costs about $1,150 in extra premiums two years later, on top of the income tax. Sizing conversions to stop just under a threshold is usually worth the trouble. Required minimum distributions starting at 73 add to MAGI too. Qualified charitable distributions sent straight from an IRA to charity, available from age 70½, count toward your RMD but stay out of MAGI. Our NC RMD guide and retirement income tax guide cover how North Carolina taxes each source.

Social Security, the COLA, and Your Part B Premium

Most people have Part B premiums deducted from their Social Security checks. The 2027 cost-of-living adjustment is 3.6%, announced October 14, 2026. For the average retiree that's about $75 more a month, while the projected Part B increase is about $6.60. A "hold harmless" rule prevents your Part B increase from cutting your net Social Security check below the prior year's amount, but it doesn't protect people who pay IRMAA or who are new to Medicare. North Carolina doesn't tax Social Security benefits at all; see how Social Security is taxed in NC.

Deducting Medicare Premiums

Medicare premiums count as medical expenses. Part B, Part D, Medigap, and Medicare Advantage premiums all qualify, as do Part A premiums if you buy Part A. If you itemize, they're deductible along with other medical costs above 7.5% of AGI on both your federal and NC returns. If you have self-employment income, you can deduct Medicare premiums as self-employed health insurance, an adjustment to income that doesn't require itemizing and is capped by your net profit. Retired North Carolina state employees should compare their options in our NC State Health Plan 2027 guide. The State Health Plan offers its own Medicare plans to retirees, and individual plans may not be a better deal.

Frequently Asked Questions

When is Medicare open enrollment for 2027?

October 15 through December 7, 2026. Changes take effect January 1, 2027. If you're in a Medicare Advantage plan, you get a second chance from January 1 through March 31, 2027, to switch to a different Medicare Advantage plan or return to Original Medicare, once.

How much is Medicare Part B in 2027?

CMS will announce the official amount in mid-November 2026. The Medicare Trustees project about $209.50 a month, up from $202.90 in 2026, with a deductible of about $292. Higher-income enrollees pay more through IRMAA, based on their 2025 tax return.

Is Medicare Advantage or Medigap better in North Carolina?

Neither is better for everyone. Medigap with a Part D plan costs more each month but gives predictable costs and lets you see any provider that takes Medicare, which suits people with ongoing health conditions or who travel. Medicare Advantage costs less up front and often adds dental and vision, but has networks and higher costs in a bad year. Since NC insurers can turn down Medigap applicants after the first six months, decide carefully at 65.

Does North Carolina have a Medigap birthday rule?

No. North Carolina doesn't have a rule allowing you to switch Medigap policies around your birthday without health questions. After your six-month Medigap open enrollment period, insurers can use medical underwriting, except in situations covered by federal guaranteed-issue rights, such as losing employer retiree coverage or your Medicare Advantage plan leaving your area.