In 2026, Medicare Part D limits what you pay out of pocket for covered prescription drugs to $2,100 for the year, and every drug plan must let you spread those costs across monthly payments.
Quick answer
Starting January 1, 2026, once you have paid $2,100 out of pocket for covered Part D drugs, your plan pays 100% of the cost of your covered drugs for the rest of the calendar year. This hard annual cap replaced the old “donut hole” coverage gap, which was eliminated in 2025 (when the cap was $2,000). Separately, the Medicare Prescription Payment Plan lets anyone with Part D coverage pay those out-of-pocket costs in monthly installments instead of all at once at the pharmacy counter. It is free and voluntary, but it does not lower your total drug bill.
Key takeaways
- The 2026 annual out-of-pocket cap for covered Part D drugs is $2,100, up from the $2,000 cap that began in 2025.
- The standard Part D deductible for 2026 is $615; after you meet it, you pay 25% coinsurance until you reach the $2,100 cap.
- Once you hit the cap, you pay $0 for covered drugs for the rest of the year.
- The coverage-gap “donut hole” no longer exists.
- The Medicare Prescription Payment Plan spreads your out-of-pocket drug costs across the year in monthly bills from your plan — it is free, voluntary, and offered by every Part D and Medicare Advantage drug plan.
- The payment plan helps with cash flow but does not save you money or lower your total costs.
How the 2026 Part D out-of-pocket cap works
The Inflation Reduction Act rebuilt the standard Part D benefit. For 2026, your spending on covered drugs moves through three phases. You start by paying your deductible, then a share of each prescription, and finally nothing once your out-of-pocket spending reaches the annual cap.
| Benefit phase | What you pay in 2026 |
|---|---|
| Yearly deductible | 100% of your covered drug costs until you have spent $615 |
| Initial coverage | 25% coinsurance for covered Part D drugs |
| Catastrophic coverage | $0 — begins once your out-of-pocket spending reaches the $2,100 annual cap |
According to the Centers for Medicare & Medicaid Services (CMS), the $2,100 figure is the original 2025 cap of $2,000 adjusted upward for the annual growth in average Part D drug spending. Because it is indexed each year, expect the cap to rise again in future years — always confirm the current figure on the official Medicare page before you rely on it.
What counts toward the $2,100 cap
Your deductible, copayments, and coinsurance for covered drugs count toward the cap. Certain payments made on your behalf — such as manufacturer discounts and the Extra Help program — also count. Your monthly plan premium does not count, and drugs your plan does not cover do not count. Medicare also warns that discount cards used instead of your plan (for example, manufacturer coupons or cash-price cards) do not count toward your deductible or out-of-pocket maximum.
The Medicare Prescription Payment Plan
The Medicare Prescription Payment Plan — sometimes called M3P — is a payment option that works alongside your existing drug coverage. Instead of paying the pharmacy each time you fill a prescription, you pay $0 at the counter and your plan sends you a monthly bill that spreads your out-of-pocket costs across the calendar year (January through December).
A few things to know:
- Every plan must offer it. Anyone with a Medicare drug plan, or a Medicare Advantage plan that includes drug coverage, can choose this option.
- It is free and voluntary. There is no cost to participate, and you can opt out.
- You still pay your premium. Each month you continue to pay any plan premium separately, plus your monthly payment-plan bill for prescriptions.
- It does not lower your costs. You pay the same total over the year — you are just spreading it out.
Who benefits most
The payment plan tends to help people who face a large drug bill early in the year, when paying hundreds or thousands of dollars in January or February would be a hardship. If your drug costs are low, or spread evenly across the year, the payment plan may not help much — and because it does not reduce your total, some people prefer to keep paying at the pharmacy.
How to sign up
Contact your Part D or Medicare Advantage drug plan — not the pharmacy — to opt in. You can join before the plan year starts or at any point during the year. Your plan can walk you through how your monthly bills will be calculated.
Where this fits with your other 2026 Medicare costs
The drug cap sits alongside the rest of your Medicare costs. For 2026, the standard Part B premium is $202.90 a month and the Part B deductible is $283. Part D premiums and copays vary by plan, so compare plans during Open Enrollment to find the best fit for your medications.
Official sources
- CMS — Final CY 2026 Part D Redesign Program Instructions (fact sheet)
- Medicare.gov — What’s the Medicare Prescription Payment Plan?
- Medicare.gov — Medicare costs
- Medicare.gov — Help with drug costs
- CMS — Medicare Part D Improvements
Next steps
- Check your plan’s Evidence of Coverage or call your plan to confirm your exact 2026 deductible and copays.
- If a big drug bill would strain your budget, ask your plan to enroll you in the Medicare Prescription Payment Plan.
- If your income and resources are limited, see whether you qualify for Extra Help, which can cut premiums and copays.
- Questions? Call 1-800-MEDICARE (1-800-633-4227; TTY 1-877-486-2048).
Related guides
- Medicare Parts Explained (2026)
- Medicare 2026 Guide
- Medigap Plans 2026
- Medicare Advantage vs. Original Medicare 2026
Frequently asked questions
What is the Medicare Part D out-of-pocket cap for 2026?
For 2026, you pay no more than $2,100 out of pocket for covered Part D drugs. Once your spending reaches $2,100, your plan pays 100% of the cost of covered drugs for the rest of the year. The cap was $2,000 in 2025 and is adjusted upward each year.
Is the Medicare donut hole gone?
Yes. The coverage-gap ‘donut hole’ was eliminated starting in 2025. In 2026 the benefit has three phases: a $615 deductible, a phase where you pay 25% coinsurance, and a catastrophic phase where you pay $0 after reaching the $2,100 annual cap.
Does the Medicare Prescription Payment Plan save me money?
No. It spreads your out-of-pocket drug costs into monthly payments across the year, but you pay the same total. It is designed to help with cash flow, especially if you face a large drug bill early in the year.
How do I sign up for the Medicare Prescription Payment Plan?
Contact your Part D or Medicare Advantage drug plan directly, not the pharmacy. Every plan must offer the option, it is free, and you can join before or during the plan year.
Does my monthly plan premium count toward the $2,100 cap?
No. Your plan premium does not count toward the cap. Only your out-of-pocket costs for covered drugs (deductible, copays, and coinsurance), plus certain payments made on your behalf such as manufacturer discounts and Extra Help, count.
Last verified against official sources on September 1, 2026. This is general information, not personalized advice, and has not been independently reviewed by an outside subject-matter expert. Confirm current details with the agency before acting.