What is the Medicare Part D out-of-pocket cap in 2026?

$2,100. Once your out-of-pocket spending on covered Part D drugs reaches $2,100 in 2026, catastrophic coverage begins automatically and you pay $0 for covered Part D drugs for the rest of the calendar year. The cap was $2,000 in 2025 and is indexed annually by CMS.

Do GLP-1 Bridge copays count toward the $2,100 Part D cap?

No. The Medicare GLP-1 Bridge operates separately from the standard Part D benefit, so the $50 monthly copay does not count toward your Part D deductible or the $2,100 out-of-pocket maximum. Budget the $50/month as a separate, ongoing expense.

Does Ozempic for diabetes count toward the Part D cap?

Yes. When a GLP-1 is covered under your regular Part D benefit — for example, Ozempic with an approved prior authorization for type 2 diabetes — your copays and coinsurance for it count toward the $2,100 cap like any other covered Part D drug.

Can I spread my Part D costs over the year?

Yes. The Medicare Prescription Payment Plan lets you spread out-of-pocket Part D costs across the remaining months of the year in monthly installments instead of paying large amounts at the pharmacy counter. Contact your plan to opt in.

The $2,100 Medicare Part D Cap and GLP-1 Drugs: What You'll Actually Pay in 2026

Medicare now caps your annual out-of-pocket drug spending — one of the biggest improvements to Part D in its history. But if you take a GLP-1 through the new Bridge program, there's a wrinkle in the math that catches almost everyone off guard.

By Alex Carter, Medicare benefits specialist · Published July 3, 2026 · Reviewed July 3, 2026

Thanks to the Inflation Reduction Act's redesign of Part D, there is now a hard ceiling on what Medicare beneficiaries pay out of pocket for covered prescription drugs each year. For 2026, CMS set that ceiling at $2,100 — up from $2,000 in 2025, indexed to drug-cost growth. Hit the cap, and you pay $0 for covered Part D drugs for the rest of the calendar year, automatically.

For people taking expensive medications, this is genuinely life-changing budgeting certainty. But GLP-1 users need to understand which of their payments count toward that cap and which don't — because the answer depends entirely on why the drug is prescribed and which program pays for it.

How the $2,100 cap works

The 2026 Part D benefit has three phases:

Deductible phase. You pay 100% of covered drug costs until you meet your plan's deductible (plans may charge up to the annual standard deductible; many charge less or $0 on lower tiers).
Initial coverage phase. You pay your plan's copays or coinsurance for each covered drug.
Catastrophic phase. Once your out-of-pocket spending on covered Part D drugs reaches $2,100, you pay nothing for covered drugs through December 31.

Two features make the cap stronger than it first sounds. First, it counts what you and certain programs on your behalf spend — not the drug's full price. Second, the Medicare Prescription Payment Plan (sometimes called "smoothing") lets you spread those costs over the remaining months of the year in installments, so a single expensive January fill doesn't blow up one month's budget.

Sources: CMS.gov — Final CY 2026 Part D Redesign Program Instructions; Medicare.gov — Part D costs.

The wrinkle: Bridge copays live outside the cap

If you get your GLP-1 through the Medicare GLP-1 Bridge (the $50/month weight-loss pathway), those $50 payments do NOT count toward your $2,100 cap — and they don't count toward your deductible either. The Bridge is a demonstration that runs alongside Part D, not inside it. CMS pays manufacturers a negotiated net price of about $245/month, you pay $50, and the transaction never touches your Part D accumulators.

In practice, that means a Bridge participant should budget the GLP-1 as a permanent $600/year line item ($50 × 12) on top of whatever they spend toward the $2,100 cap on their other medications. The $50 never "graduates" to free in the catastrophic phase the way a normal covered drug would.

Is that a bad deal? No — $600/year for a medication with a list price over $1,000/month is still a dramatic discount, and you skip the deductible entirely. It's simply a different kind of deal than regular Part D coverage, and your annual budget should reflect that.

When GLP-1 spending DOES count toward the cap

If your GLP-1 is covered under your regular Part D benefit — most commonly Ozempic or Mounjaro with an approved prior authorization for type 2 diabetes, or semaglutide for a qualifying cardiovascular indication — then it behaves like any other covered drug: your copays count toward the $2,100 cap, and once you hit the cap the drug becomes $0 for the rest of the year.

This creates a situation where two neighbors taking the same molecule have completely different cost curves, purely because of the diagnosis on the prescription:

	Diabetes pathway (regular Part D)	Weight-loss pathway (GLP-1 Bridge)
Typical monthly cost	Plan copay/coinsurance (varies by tier)	Flat $50
Deductible applies?	Often yes, depending on plan/tier	No
Counts toward $2,100 cap?	Yes	No
Cost after reaching cap	$0 for rest of year	Still $50/month
Realistic annual total (drug alone)	Capped — never more than $2,100 across all covered drugs	$600/year, uncapped by Part D

Illustrative comparison — actual copays depend on your plan's formulary tier. Verify with your plan.

Worked example: what a typical year looks like

Maria, 68, takes three medications: a GLP-1 through the Bridge ($50/month), plus a blood pressure drug and a cholesterol drug through her Part D plan ($25 and $15 monthly copays after a small deductible).

Her Part D out-of-pocket for the year: roughly $480–$600 (deductible + copays) — well under the $2,100 cap, which she never reaches.
Her Bridge spending: $600 (12 × $50), tracked separately.
Total drug budget for the year: about $1,100–$1,200, predictable month to month.

Robert, 72, has type 2 diabetes and takes Ozempic under his regular Part D benefit along with insulin and two other drugs. His copays add up fast — but every dollar counts toward the cap. He reaches $2,100 in August, and from September through December all of his covered drugs, Ozempic included, cost him $0.

Want to run your own numbers? Our cost calculator handles both pathways and shows your estimated year-by-month spending.

Three practical takeaways

1. Know your pathway

Ask your plan (or check your PA approval letter) whether your GLP-1 runs through regular Part D or the Bridge. The answer changes your whole cost forecast.

2. Budget Bridge separately

Treat the $50/month as its own bill — like a utility — rather than assuming it stops when you hit the cap. It doesn't.

3. Consider smoothing

If your non-GLP-1 drugs are expensive early in the year, the Medicare Prescription Payment Plan spreads costs into monthly installments. Opt in through your plan.

Estimate your full-year drug costs

The calculator combines your Part D copays and Bridge payments into one month-by-month projection.

Open the cost calculator →