The Medicare Part D coverage gap — known as the donut hole — has been effectively eliminated in 2026. Under changes brought by the Inflation Reduction Act, there is now a $2,000 annual out-of-pocket cap on covered Part D drugs. Once you reach that cap, you pay $0 for covered medications for the rest of the year. For the millions of seniors who previously fell into the coverage gap, this is one of the most significant Medicare improvements in decades.
What the Donut Hole Was
To understand why the 2026 change matters, it helps to know what the donut hole was. For years, Medicare Part D had a coverage structure where after your initial drug coverage reached a certain spending threshold, your coverage would pause — and you would pay a significantly higher percentage of drug costs until you reached catastrophic coverage.
This gap caused serious hardship. Seniors with chronic conditions requiring expensive medications — cancer drugs, biologics, specialty medications — could face thousands of dollars in out-of-pocket costs in a single year with no ceiling on their exposure.
The 2026 Structure — How It Works Now
Under the 2026 Part D benefit structure, there are now effectively three phases:
Phase 1 — Annual Deductible
Your Part D plan's annual deductible (up to $590 in 2026). You pay 100% of covered drug costs until this deductible is met. Many plans have lower deductibles, and some waive it entirely for certain drug tiers.
Phase 2 — Initial Coverage
After meeting your deductible, you pay your plan's normal copays or coinsurance for covered drugs. The specific amounts depend on your plan's formulary tier structure.
Phase 3 — Catastrophic Coverage (the new cap)
Once your total out-of-pocket spending on covered Part D drugs reaches $2,000 in a calendar year, you enter catastrophic coverage and pay $0 for all covered drugs for the rest of that calendar year. This cap resets every January 1.
Alongside the $2,000 cap, Medicare now offers an optional monthly payment plan that spreads out-of-pocket Part D costs evenly across the year — rather than having large costs hit at once early in the year. Ask your Part D plan about enrolling in the Medicare Prescription Payment Plan.
Insulin — Separately Capped at $35/Month
The Inflation Reduction Act also separately capped insulin costs at $35 per month per covered insulin product under Medicare Part D. This cap applies regardless of whether you have reached the $2,000 annual cap — insulin is always limited to $35/month maximum from January 1.
For seniors with Type 1 or insulin-dependent Type 2 diabetes, this change has been transformative. Prior to this cap, some seniors were paying $100–$300 per month for insulin alone.
Who Benefits Most From the 2026 Cap
The $2,000 cap provides the greatest benefit to seniors who take expensive specialty medications, have cancer or other conditions requiring high-cost drugs, take multiple brand-name medications, or previously avoided necessary medications because of cost.
For seniors whose annual drug spending was always well under $2,000, the practical impact is minimal — their costs were already low. But for seniors who previously spent $3,000–$10,000 per year on medications, the cap is potentially life-changing.
Still Qualify for Extra Help
The $2,000 cap is a benefit for all Part D enrollees. But if your income and resources are limited, you may still qualify for Medicare Extra Help — which can reduce your drug costs even further, to as little as $4.50 for generic drugs and $11.20 for brand-name drugs, with no annual deductible. Apply at ssa.gov/extrahelp.
- Know your Part D plan's deductible and tier copays — costs still apply until the $2,000 cap
- Track your out-of-pocket spending — your plan's member portal or app shows your progress toward the cap
- If you use insulin, confirm your Part D plan covers your specific insulin product
- If you have high drug costs, ask your plan about the Medicare Prescription Payment Plan to spread costs evenly
- If your income qualifies, apply for Extra Help — the $2,000 cap and Extra Help work together
- Review and potentially switch Part D plans every Annual Enrollment Period (October 15–December 7)
Frequently Asked Questions
What is the Medicare donut hole in 2026?
In 2026, the Medicare Part D coverage gap (donut hole) has effectively been eliminated by the Inflation Reduction Act. There is now a $2,000 annual out-of-pocket cap on covered Part D drugs. Once you spend $2,000 in out-of-pocket drug costs, you pay $0 for covered drugs for the rest of the year.
How does the $2,000 Medicare drug cap work in 2026?
In 2026, once your total out-of-pocket costs for covered Part D drugs reach $2,000, you enter catastrophic coverage and pay $0 for the rest of the calendar year. This cap resets every January 1. It is one of the most significant Medicare drug benefit improvements in the program's history.
Does the $2,000 Medicare cap include insulin?
Insulin costs are separately capped at $35 per month per covered insulin product under Part D, regardless of whether you have reached the $2,000 annual cap. Both caps apply independently — insulin is always $35/month maximum, and total drug spending caps at $2,000 annually.
What drugs count toward the Medicare $2,000 cap?
Only your out-of-pocket spending on covered Part D drugs counts toward the $2,000 cap. This includes your deductible payments, copays, and coinsurance for covered drugs. Amounts paid by Extra Help, other insurance, or manufacturer coupons may not count — check with your plan.
What was the donut hole before 2026?
Before the Inflation Reduction Act changes took full effect, the donut hole was a coverage gap where Medicare Part D coverage paused after initial benefit spending. Beneficiaries paid 25% of drug costs in the gap. The 2026 $2,000 cap eliminates this structure entirely for most beneficiaries.