The Centers for Medicare & Medicaid Services has set the ceiling for what a Medicare medical savings account plan may charge as a deductible in 2027, and the number is large. The agency’s calendar year 2027 rate announcement, dated April 6, 2026, puts the maximum at $18,900. That figure is a limit rather than a typical bill; individual plans may set lower deductibles, and the announcement does not say what any specific plan will choose.
What the CY 2027 Rate Announcement says about MSA plans
The sentence is short and unambiguous. In the CY 2027 Medicare Advantage Rate Announcement, CMS writes under the heading for Medical Savings Account plans: “The maximum deductible for MSA plans for CY 2027 is $18,900.” The word that matters is maximum. The announcement sets an upper bound, and nothing in the document turns that bound into an average or a default.
The same document says the deductible comes from a statutory formula, not from a negotiation with insurers or a judgment call by the agency. The sections of the announcement that address the figure do not walk through that calculation, so the exact arithmetic behind $18,900 is not laid out in the text CMS published alongside it.
How the rate announcement fits the wider 2027 Medicare Advantage numbers
The deductible cap is one line in a much larger annual document. The headline number in the same announcement is the national per capita Medicare Advantage growth percentage for 2027, which CMS puts at 4.40 percent for combined aged and disabled beneficiaries. It sits in the same announcement as the deductible ceiling.
The announcement also compares per capita actuarial values across years. For calendar year 2026 the Part A value is listed at $41.82 a month and the Part B value at $191.17 a month. For 2027 those rise to $45.23 and $205.54. The announcement lists them as actuarial values, not as premiums or as anything a beneficiary pays, and they are reported here only because the same release also fixes the deductible ceiling for MSA plans.
Why an MSA plan deductible is a different kind of number
A Medicare medical savings account plan is a Medicare Advantage option that pairs a high-deductible health plan with a savings account. CMS publishes a dedicated consumer document, Your Guide to Medicare Medical Savings Account (MSA) Plans, last revised in 2012, which is the agency’s own explanation of the plan type for beneficiaries weighing it against other coverage choices. It carries no 2027 figures, and the rate announcement is where those live.
The plan type is built around a large deductible by design, and the rate announcement is where CMS fixes how large that deductible may be each year. A ceiling of $18,900 is the 2027 answer.
The announcement itself does not state how many plans will use the full amount, how many MSA plans will be offered for 2027, or how much money Medicare will deposit into the accounts. Those details come from individual plan filings and the plan benefit materials that arrive closer to the annual open enrollment period, not from the rate announcement. Anyone reading the $18,900 figure as the cost of an MSA plan is reading it wrongly; it is the legal ceiling on one component of that cost.
The Part D specialty-tier threshold that arrived in the same planning cycle
A second 2027 number belongs to the same planning cycle but a different part of the program. CMS’s CY 2027 Part D bidding instructions, dated February 6, 2026, set the specialty-tier eligibility threshold at $1,080. The announcement-level label is a specialty-tier eligibility threshold. The figure comes from the bidding instructions, the document CMS issues to plan sponsors preparing their 2027 bids, and it is a threshold for tier eligibility, not a price for any drug.
The two figures are unrelated in mechanism. One caps a deductible in a savings-account plan; the other sets a cost level for sorting drugs inside Part D formularies. They share a calendar, since both are 2027 parameters published months ahead of the fall enrollment season, and both come straight from CMS documents rather than from plan marketing.
What the 2027 documents leave unstated
The two CMS documents are precise about the numbers they carry and silent about the rest. The rate announcement does not say that any plan will charge $18,900. The rate announcement does not say that any plan will charge $18,900, and neither document is a price list. What both establish is the outer boundary inside which insurers can design 2027 products.
The rate announcement was published April 6, 2026, and the bidding instructions on February 6, 2026, so both predate the plan-specific details that insurers file later in the year. The figure that matters for anyone comparing options is the one printed in a specific plan’s own materials. The rate announcement’s role is narrower and firmer: CMS states, in its own words, that “the maximum deductible for MSA plans for CY 2027 is $18,900,” and that sentence is the sourced anchor for every plan that follows.
Tracking Medicare drug and plan costs in one place
Medicare enrollees comparing coverage for the coming year often have scattered notices, drug lists and cost-help rules to sort through. A single organised kit can keep those pieces together.
The Medicare Cost & Coverage Protection Kit includes the new Part D out-of-pocket cap explainer and a medication and cost tracker, so a reader can line up a drug list against the cap and keep running totals.
Open The Medicare Cost & Coverage Protection Kit and its medication and cost tracker →
This article was produced with AI assistance and checked against the primary sources linked above.
David M. Keller is a finance writer based in Columbus, Ohio, covering personal finance and consumer-focused economic topics. He earned his degree in journalism from Ohio University and began his career reporting on local business and economic trends for a regional media outlet. Since then, he has contributed to a variety of online publications, focusing on clear, practical coverage of topics such as cost of living, debt, and everyday financial decision-making.
