Medicare Part D Coverage Gap 2026: The Donut Hole Is Gone

The Coverage Gap No Longer Exists

If you're searching for the Medicare Part D donut hole in 2026, you won't find one. The Inflation Reduction Act permanently eliminated the coverage gap starting January 1, 2025. Your parent will not hit a phase where drug costs suddenly spike before catastrophic coverage kicks in. That entire middle stage of the old Part D benefit structure is gone.

This matters because an enormous amount of Medicare advice online — articles, forum posts, broker websites — still references the donut hole as if it's active. It isn't. Any guide telling your parent to budget for the coverage gap is working from outdated information.

What Replaced It

The old four-phase Part D structure looked like this:

1. Deductible → 2. Initial Coverage → 3. Coverage Gap (donut hole) → 4. Catastrophic

The 2026 structure has three phases:

Phase 1 — Deductible: Your parent pays 100% of covered drug costs up to $615. Some plans waive this for generic drugs.

Phase 2 — Initial Coverage: After the deductible, your parent pays 25% coinsurance (or plan-specific copays). This phase continues until out-of-pocket spending reaches $2,100.

Phase 3 — Catastrophic Coverage: All covered drugs cost $0 through December 31.

No gap. No sudden cost increase in the middle. Your parent's cost-sharing stays at 25% (or lower, depending on the plan's copay structure) from the deductible through the out-of-pocket cap, then drops to zero.

What the Donut Hole Used to Do

For context — and to explain why so many articles still mention it — the coverage gap was the phase between initial coverage and catastrophic coverage where beneficiaries were responsible for a much larger share of their drug costs. Before the Affordable Care Act began closing it in 2011, beneficiaries paid 100% of drug costs in the gap. Even after the gradual phase-down, beneficiaries were paying 25% of drug costs in the gap — the same rate as initial coverage, but without the same plan contributions, which meant the gap still felt like a financial cliff for people on expensive medications.

The Inflation Reduction Act ended the question entirely by eliminating the gap phase and introducing a hard annual out-of-pocket cap.

The Medicare Manufacturer Discount Program

The donut hole's elimination came alongside a restructured discount program. Under the Medicare Manufacturer Discount Program (which replaced the old Coverage Gap Discount Program on January 1, 2025), drug manufacturers must provide:

• 10% discount on brand-name drugs during the initial coverage phase
• 20% discount during the catastrophic phase

These manufacturer discounts reduce the total cost of drugs but do not count toward your parent's True Out-of-Pocket (TrOOP) spending. Only your parent's actual payments, Extra Help subsidies, SPAP contributions, and qualified charity payments count toward the $2,100 cap.

What This Means for Your Parent's 2026 Costs

The practical impact: if your parent takes expensive medications, their total annual liability is now capped at $2,100, period. No phase in the middle inflates costs before they reach catastrophic coverage. And the M3P payment plan can spread that $2,100 across monthly installments, so the financial hit is predictable.

During annual plan review, focus on the factors that still vary between plans: formulary tier placement, pharmacy network pricing, utilization management restrictions, and premium costs. The coverage gap is no longer one of them.

Our Medicare Part D guide covers the full 2026 benefit structure and includes a cost calculator that projects your parent's spending through each phase.

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