What Medicare Costs in 2027: The Categories Explained

Medicare's costs for 2027 break down into a small number of categories, and understanding the categories matters more than memorizing a dollar figure, because several of the actual numbers are plan-specific or income-specific rather than fixed nationally. Part A is usually premium-free if you or a spouse paid Medicare payroll taxes long enough. Part B has a standard monthly premium plus a possible income-related surcharge. Everything beyond that — Medicare Advantage, Part D, and Medigap — is priced by private plans and varies by where you live and which plan you choose. This piece walks through the structure. For the actual 2027 dollar amounts, Medicare.gov publishes the official figures once CMS finalizes them.

Part A: usually premium-free, but not automatically free of all cost

Part A covers inpatient hospital stays, skilled nursing facility care, hospice, and some home health care. Most people don't pay a monthly premium for Part A at all. That's because eligibility for premium-free Part A is based on your (or your spouse's) work history — specifically, having paid Medicare payroll taxes for a long enough period, generally the equivalent of about ten years of qualifying work. If you or your spouse meets that threshold, Part A comes with no monthly premium.

If you don't meet that work history requirement, you can still buy into Part A, but you'll pay a monthly premium for it, and the amount depends on how much work history you do have. Premium-free or not, Part A still carries its own deductible and cost-sharing structure for hospital stays and skilled nursing care, which is separate from any premium question. Medicare.gov's Part A costs page has the current figures for the deductible and daily cost-sharing amounts, which are set annually.

Part B: a monthly premium, plus IRMAA for higher earners

Part B covers outpatient and medical services — doctor visits, outpatient procedures, preventive care, durable medical equipment, and more. Almost everyone pays a monthly premium for Part B, and that premium is set annually by CMS, applying nationally as a baseline figure. It also typically comes with an annual deductible before Medicare starts sharing costs, followed by coinsurance on covered services.

If your income is above certain thresholds, you may pay more than the standard Part B premium through what's called the Income-Related Monthly Adjustment Amount, or IRMAA. IRMAA is a real part of the Medicare cost structure — it exists, it's based on your reported income from two years prior, and it applies in tiers, with higher-income beneficiaries paying progressively more. What we won't do here is guess at the specific 2027 income brackets or dollar surcharges, since those figures are set by CMS and should be confirmed directly. Medicare.gov's page on Part B costs and IRMAA has the official current numbers once published for the year.

Part C (Medicare Advantage): priced by the plan, not by the federal government

If you choose a Medicare Advantage plan instead of Original Medicare, your premium, deductible, and cost-sharing are set by the private plan you enroll in, not by a single national figure. Plans vary by county, by insurer, and by the specific plan design — some have low or no additional premium beyond Part B, others charge more in exchange for richer benefits. What's consistent across all Medicare Advantage plans is a required annual out-of-pocket maximum, a cap CMS requires every plan to include, though the specific dollar amount of that cap also varies by plan. There is no single "Medicare Advantage cost for 2027" that applies across the board — it's specific to the plan available in your area. See our fuller comparison of Medicare Advantage versus Medigap for how these cost structures differ in practice.

Part D: also plan-specific, with its own moving pieces

Stand-alone Part D drug plans, and the drug coverage bundled into most Medicare Advantage plans, are priced individually by each plan. Premiums, deductibles, and which drugs are covered on which cost tier all vary. Notably for 2027, a federal program that had been helping limit how much stand-alone Part D premiums could increase year over year is ending after 2026, which means some stand-alone Part D premiums are expected to shift upward for 2027 — see our full explanation of why Part D premiums are expected to rise for the details. As with Part B, we aren't going to publish a specific dollar premium figure here, because it depends entirely on which plan you have.

Medigap: priced by the insurer, and by when you enroll

Medigap, or Medicare Supplement insurance, is a policy you can buy alongside Original Medicare to help cover some of the cost-sharing Original Medicare leaves you responsible for — things like coinsurance and, depending on the plan letter, deductibles. Medigap premiums are set by private insurers and vary by the specific plan letter you choose, the insurer, your state, and in many states, your age and health at the time you apply. There is no federally set Medigap premium. If you're deciding between Medigap and Medicare Advantage, the cost comparison isn't just about the Medigap premium itself — it's about that premium plus Part B plus a separate Part D plan, compared against a Medicare Advantage plan's typically lower premium but network restrictions.

Why we aren't printing exact 2027 numbers here

CMS announces the coming year's Part B premium, Part B deductible, Part A deductible, and IRMAA brackets on its own schedule, and those figures aren't something to guess at or estimate in advance. Any article claiming to know the exact 2027 dollar amount for a federally set cost before CMS has published it is either working from an unconfirmed estimate or simply wrong. The categories above — what's fixed nationally, what varies by income, and what's set entirely by private plans — are stable and worth understanding regardless of which year's specific numbers apply. For the actual current figures, Medicare.gov's costs page is the source to check, and it's updated once CMS finalizes each year's amounts.

Putting it together

For 2027, expect this general shape: Part A is likely free of a monthly premium if you have sufficient work history, though it still carries deductibles and cost-sharing. Part B has a standard premium plus a possible income-based surcharge for higher earners. Medicare Advantage, Part D, and Medigap are all priced by private plans and vary by where you live and which plan you pick — there's no single "Medicare cost" figure that applies to everyone.

The bottom line

Medicare's cost structure has two layers: numbers CMS sets nationally, like the Part B premium and IRMAA thresholds, and numbers private plans set individually, like Medicare Advantage premiums, Part D premiums, and Medigap rates. Both layers change from year to year, and the specific 2027 dollar figures should come from Medicare.gov or your plan's own materials, not from an estimate. Understanding which category a given cost falls into tells you where to look for the real number and whether it's something that applies to everyone or just to your specific plan.

For official 2027 cost figures once published, see Medicare.gov's Medicare costs overview and CMS's Medicare program cost information.