A realistic breakdown of 2026 premiums, deductibles, and coverage gaps under each path — not a sales pitch for either one.
Every year, someone asks whether Medicare Advantage or Original Medicare is the better deal, as if there's one right answer for everyone. There isn't. The honest answer depends on how often you see specialists, whether your doctors are in-network, how much travel you do, and whether you can afford an unpredictable bad year versus a predictable premium.
What follows is a realistic breakdown of where the money actually goes under each option in 2026, not a sales pitch for either one.
Original Medicare is Part A (hospital insurance) and Part B (medical insurance) run directly by the federal government. Most people don't pay a Part A premium if they or a spouse paid Medicare taxes for at least 10 years. Part B is different — nearly everyone pays a monthly premium for it.
Higher earners also pay more. If your income is above certain thresholds set annually by the Social Security Administration, an Income-Related Monthly Adjustment Amount (IRMAA) is added on top of the standard Part B and Part D premiums. The exact income brackets change yearly, so it's worth checking your specific figure on SSA.gov rather than relying on a number you saw somewhere else.
Medicare Advantage (Part C) plans are sold by private insurers approved by Medicare. Instead of the government paying providers directly, the insurer receives a fixed monthly payment per member and manages your care within a network.
If you stay on Original Medicare, a Medicare Supplement (Medigap) policy can pick up some or all of the leftover 20% coinsurance and deductibles. Medigap only pairs with Original Medicare, never with Medicare Advantage, and premiums vary widely by state, age, and the specific lettered plan (A through N) you choose.
One detail that surprises a lot of people: outside your initial Medigap enrollment window, insurers in most states can use medical underwriting to deny you a policy or charge more based on your health history. A handful of states now guarantee some annual access regardless of health, but it's still the exception rather than the rule, so timing your Medigap decision matters as much as timing your Medicare enrollment.
Start by listing your current doctors and asking whether they're in-network for the specific Medicare Advantage plans you're considering — not just "does this insurer operate in my state." Then look at how often you traveled out of state in the last two years. Frequent snowbirds and RV travelers tend to lean toward Original Medicare plus Medigap, while people who stay local and want dental coverage bundled in often prefer Medicare Advantage.
None of this is medical or financial advice tailored to your situation. A licensed agent, a SHIP counselor (free and unbiased, funded by the government), or Medicare.gov's plan finder can run the actual numbers using your ZIP code and prescriptions.
Medicare Advantage plans are scored annually on a five-star scale covering member satisfaction, customer service, and clinical quality measures. A plan's marketing budget has nothing to do with its star rating, and two plans from the same well-known insurer can carry very different scores in different counties. A 5-star plan also opens a special enrollment window that lets you switch into it once a year outside the usual Fall Annual Enrollment Period, so it's worth checking the current rating on Medicare.gov's Plan Finder rather than assuming a familiar name means a well-rated plan.
Switching from Medicare Advantage back to Original Medicare is allowed during the Medicare Advantage Open Enrollment Period (January 1 through March 31) or the Fall Annual Enrollment Period (October 15 through December 7). The complication isn't switching back to Original Medicare itself — it's picking up a Medigap policy afterward. Outside your original enrollment window, insurers in most states can medically underwrite a new Medigap application, meaning a health condition you developed while on Medicare Advantage could result in a higher premium or a denial. This is one of the most consequential details in the entire Medicare system, and it's rarely explained clearly before someone signs up for their first Medicare Advantage plan.
No. Federal rules prohibit selling a Medigap policy to someone enrolled in a Medicare Advantage plan, and it isn't useful even where allowed, since Medigap is designed to fill gaps in Original Medicare's cost-sharing specifically.
Most do, bundled in as MA-PD plans, but not all. If a plan doesn't include Part D coverage, joining a separate stand-alone drug plan alongside certain types of Medicare Advantage plans can actually cause you to be disenrolled, so this is worth confirming before you sign up.
Availability depends on county, and rural areas sometimes have fewer plan choices or smaller provider networks than urban and suburban areas. Original Medicare, by contrast, is accepted anywhere in the U.S. that takes Medicare at all.