7 min read · Last updated August 24, 2026
- Medicare Part D’s standard deductible rises from $615 in 2026 to $700 in 2027, and the annual out-of-pocket threshold that triggers free coverage for the rest of the year rises from $2,100 to $2,400, per the Centers for Medicare & Medicaid Services’ (CMS) 2027 Rate Announcement.
- The Part D coverage gap was eliminated in 2025 under the Inflation Reduction Act (IRA), not in 2027. The 2027 rule codifies that structure into permanent regulation; it does not create it.
- A beneficiary whose out-of-pocket drug spending would have crossed 2026’s $2,100 threshold can fall short of 2027’s $2,400 threshold on the identical prescriptions, paying coinsurance longer before free coverage starts.
- Beneficiaries who qualify for the Part D Low-Income Subsidy, also called Extra Help, pay a $0 deductible in both 2026 and 2027. The increase does not touch that group.
In this article
- What’s Actually Changing in 2027
- The Coverage Gap Didn’t Disappear in 2027. It Disappeared in 2025
- Do the Math on Your Own Drug Spending
- Who the New Deductible Doesn’t Touch
- Frequently asked questions
Divya Krishnan takes two brand-name maintenance medications, and starting January 1, 2027, she will pay $85 more before her Part D coverage contributes a cent toward either one.
That $85 comes from the standard Part D deductible, rising from $615 in 2026 to $700 in 2027. On the same date, the annual out-of-pocket threshold that triggers free coverage for the rest of the year rises too, from $2,100 to $2,400, according to the Centers for Medicare & Medicaid Services’ (CMS) 2027 Rate Announcement. Both numbers moved the same direction in the same year, inside a redesign most beneficiaries have heard described only as a savings program.
What’s Actually Changing in 2027
CMS’s own Attachment V lays out the year-over-year parameters for the standard Part D benefit plainly.
| Standard Benefit Parameter | 2026 | 2027 |
|---|---|---|
| Deductible | $615 | $700 |
| Out-of-pocket threshold (triggers $0 cost-sharing for the rest of the year) | $2,100 | $2,400 |
| Deductible for full-subsidy (Extra Help) beneficiaries | $0 | $0 |
| Coinsurance in the initial coverage phase, standard benefit | 25% | 25% |
Both parameters update every year by statutory formula, tied to the growth in Part D drug spending nationally. CMS labels its annual cycle by calendar year (CY) throughout its own paperwork, and describes the update mechanism directly in the same rate announcement: the agency updates “the defined standard benefit deductible amount and the annual out-of-pocket threshold by multiplying the CY 2026 amounts by the CY 2027 Annual Percentage Increase and rounding as specified by the statute.” Neither figure is a policy choice made fresh each year. Both are formula outputs, which is exactly why they rarely get explained beyond the headline dollar amount.
What makes 2027 worth a second look is not that the numbers moved. It is that both moved in the same direction the same year, and only one of the two, the deductible, gets much attention in plan marketing.
The Coverage Gap Didn’t Disappear in 2027. It Disappeared in 2025
A common but inaccurate claim circulating around the 2027 changes is that Medicare is eliminating the Part D coverage gap, the “donut hole,” as part of this update. It already happened, two years earlier.
CMS’s own fact sheet on the 2027 final rule states that the Inflation Reduction Act (IRA) of 2022 “directed CMS to implement these changes through 2026 via program instructions,” and that with that temporary authority expiring, “CMS is codifying these changes for 2027 and beyond, including eliminating the coverage gap phase, establishing a reduced annual out-of-pocket threshold, removing cost sharing for enrollees in the catastrophic phase, and incorporating the Manufacturer Discount Program that replaced the Coverage Gap Discount Program on January 1, 2025.”
Read that carefully and the sequence is the opposite of what it sounds like. The coverage gap ended in 2025, run on temporary CMS guidance. The 2027 rule writes that same structure into permanent regulation. It is a codification of an existing benefit, not a new one, and the deductible and threshold increases riding alongside it are the part that is actually new for 2027.
Part of what replaced the old coverage gap discount is worth naming too. Since 2025, drug manufacturers provide a 10 percent discount on brand-name drugs during the initial coverage phase, on top of the 65 percent Part D plans pay, leaving the beneficiary’s own coinsurance share at 25 percent, per KFF’s analysis of the redesign. That 25 percent enrollee share is the number that keeps showing up in every version of this math, in 2026 and again in 2027.
Do the Math on Your Own Drug Spending
The deductible and the threshold hit different beneficiaries differently, so run your own numbers rather than trusting either headline figure alone.
If your total drug costs for the year stay under the deductible, the $85 increase is the whole story: you pay the first $700 yourself in 2027 instead of $615, before your plan’s cost-sharing starts.
If your spending runs higher, the threshold is where the real exposure sits. Say your annual out-of-pocket drug spending, meaning the deductible plus your 25 percent coinsurance share in the initial coverage phase, would have reached $2,150 under 2026’s rules. That crosses the old $2,100 threshold, and the rest of the year’s covered drugs come at no cost to you. Under 2027’s $2,400 threshold, that identical $2,150 in spending falls $250 short. You keep paying your 25 percent coinsurance share, prescription by prescription, until your own payments add up to the full $2,400, not the old $2,100.
A beneficiary who would have finished the year inside Medicare’s catastrophic protection under 2026’s parameters can spend the same year outside it under 2027’s, on the exact same prescriptions.
Krishnan’s own two prescriptions run about $2,800 a year combined. Under 2026’s rules: $615 deductible, then 25 percent coinsurance on the remaining $2,185, or $546.25, for a total of $1,161.25 out of pocket. Under 2027’s rules, on the identical $2,800: $700 deductible, then 25 percent coinsurance on the remaining $2,100, or $525, for a total of $1,225. She never comes close to either year’s out-of-pocket threshold. The deductible alone costs her $85 more, and because that $85 shifts out of the 25 percent coinsurance base, her coinsurance share falls $21.25 in the other direction. The net is $63.75 more in 2027, for the same two prescriptions.
Who the New Deductible Doesn’t Touch
CMS’s own table draws a clean line most articles skip: beneficiaries enrolled in the Part D Low-Income Subsidy, commonly called Extra Help, pay a $0 deductible in 2026 and a $0 deductible in 2027. The increase from $615 to $700 does not apply to them at all, because it was never their number to begin with.
If your income and resources are low enough to qualify for Extra Help, the deductible change in this article is not something you need to plan around. For everyone else, the $85 deductible increase applies no matter what you spend. The $300 threshold increase only costs you if your own annual out-of-pocket spending would have landed between $2,100 and $2,400, which is the range worth checking against what already counts toward that threshold before assuming either number applies to you.
Frequently asked questions
What is the Medicare Part D deductible for 2027? The standard Part D deductible rises to $700 in 2027, up from $615 in 2026, per CMS’s 2027 Rate Announcement. Beneficiaries pay this amount themselves before their plan’s cost-sharing on covered drugs begins, unless they qualify for the $0 deductible under Extra Help.
What is the Medicare Part D out-of-pocket threshold for 2027? The annual out-of-pocket threshold, the point at which covered drugs become free for the rest of the year, rises to $2,400 in 2027, up from $2,100 in 2026. This is the dollar amount you personally have to pay, through the deductible and your coinsurance share, before catastrophic coverage begins.
Did Medicare eliminate the Part D coverage gap in 2027? No. The Inflation Reduction Act eliminated the coverage gap phase starting in 2025, run on temporary CMS program instructions. The 2027 final rule codifies that same structure into permanent regulation rather than creating it. Do not treat coverage-gap elimination as a new 2027 benefit.
Do Extra Help recipients pay the higher Part D deductible in 2027? No. Full-subsidy beneficiaries enrolled in Extra Help pay a $0 deductible in both 2026 and 2027, according to CMS’s published benefit parameters. The $615-to-$700 increase applies only to beneficiaries paying the standard, non-subsidized benefit.
How can I tell if the 2027 changes will cost me more or less? Add up your typical annual out-of-pocket drug spending under the current $615 deductible and $2,100 threshold, then rerun the same math against $700 and $2,400. If your spending regularly lands near either threshold, the shift can change how many months you spend paying coinsurance before free coverage starts.
Deductible rising to $700 and the safety net moving to $2,400 in 2027?
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