Insights
What Is the Part D Out-of-Pocket Cap?
October 7, 2026
The Part D out-of-pocket cap is a yearly dollar limit on what a Medicare beneficiary pays for covered prescription drugs. Once the beneficiary reaches that threshold, catastrophic coverage begins and out-of-pocket costs drop significantly for the rest of the year. The exact cap amount is adjusted annually by CMS.
Which costs count toward the cap?
Only out-of-pocket spending on covered Part D drugs—your deductible, copays, and coinsurance—counts toward the cap. Payments made by the plan itself, Extra Help subsidies, and drug manufacturer discounts do not count as true out-of-pocket costs.
Here's what applies:
- Deductible paid by the beneficiary.
- Copays and coinsurance the member pays at the pharmacy.
- Coverage-gap (donut hole) spending by the member.
Excluded amounts:
- Premium payments for the Part D plan.
- Costs for drugs not covered by the formulary.
- Spending above any quantity or supply limits.
- Payments made by third parties (charities, discount cards, manufacturer coupons outside the Part D system).
Beneficiaries move through the deductible phase, initial coverage, and—if applicable—coverage gap before hitting the out-of-pocket threshold.
What happens after you reach it?
After reaching the cap, the beneficiary enters catastrophic coverage and pays either a small copay per prescription or a low percentage of the drug cost, whichever applies under current law. Most beneficiaries pay very little—often a few dollars per fill—for the rest of the calendar year.
Catastrophic coverage lasts through December 31. At that point the cycle resets: the deductible, initial coverage limit, and out-of-pocket maximum all start over on January 1.
Because annual prescription spending can vary, beneficiaries who reach the cap one year may not reach it the next, depending on their medication list and any formulary or pricing changes.
| Phase | What the beneficiary pays | Counts toward cap? |
|---|---|---|
| Deductible | 100 % of drug cost until deductible is met | Yes |
| Initial coverage | Plan copay or coinsurance per tier | Yes |
| Coverage gap (if applicable) | Member coinsurance; manufacturer discount applies but does not count | Member portion only |
| Catastrophic | Small copay or low % per script | N/A—already past cap |
Does the cap apply to every plan?
Yes, the out-of-pocket cap is a Medicare Part D program rule, so it applies to all stand-alone Part D plans and to the prescription benefit inside Medicare Advantage plans that include drug coverage (MA-PD). The threshold amount is the same across all plans in a given year, but each plan's formulary, tier structure, and pharmacy network will determine how quickly a member reaches it.
Plans may differ in:
- Formulary design: which drugs are preferred or require prior authorization.
- Tier copays: generic versus brand-name cost-sharing.
- Preferred pharmacy networks: lower copays at certain retail or mail-order pharmacies.
Agents should compare plan designs to estimate a client's total annual drug costs, not just the deductible or monthly premium.
How Affordable Medicare Quote handles this
Affordable Medicare Quote delivers Medicare leads to licensed agents who help beneficiaries understand Part D rules, including the out-of-pocket cap, and compare plan options. Leads are sourced through compliant channels and matched to the agent's licensed states and capacity. Whether you need live transfers, call backs, aged data, or raw files, Affordable Medicare Quote builds inventory around your requirements so you can focus on enrollment conversations.
Frequently asked questions
Do premiums count toward the out-of-pocket cap?
No. Monthly Part D or MA-PD premiums are separate and never count toward the out-of-pocket threshold. Only drug copays, coinsurance, and deductibles paid at the pharmacy apply.
Can the cap amount change mid-year?
No. The cap is fixed for the entire calendar year. CMS announces the new figure each fall during the Annual Election Period, effective January 1.
Does Extra Help change the out-of-pocket cap?
Beneficiaries who qualify for Extra Help (Low-Income Subsidy) pay reduced or zero copays and typically never reach the standard cap because their subsidized costs are so low.
How do I find the current year's cap amount?
Visit Medicare.gov or review the annual Medicare & You handbook. CMS publishes the threshold each October for the following calendar year.
What if a drug isn't covered by the formulary?
Spending on non-covered drugs does not count toward the cap. The beneficiary pays the full retail price, and those dollars never help them reach catastrophic coverage.
Get exclusive Medicare live transfers, call backs, aged, or raw data built around your licensed states and AEP capacity. Request inventory at affordablemedicarequote.com/contact/.
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