Medicare Part D in 2026 — What Prescription Drug Shoppers Need to Know

Medicare Part D 2026: Prescription Drug Coverage FAQ

Learn how Medicare Part D works in 2026, including deductibles, prescription costs, formularies and the $2,100 out-of-pocket threshold.

Prescription drug coverage is one of the most important Medicare decisions for many beneficiaries. And in 2026, understanding how Part D costs work is especially important.

FAQ

What is Medicare Part D?

Part D is Medicare prescription drug coverage offered through Medicare-approved private plans.

Can I get Part D with Original Medicare?

Yes. You can generally enroll in a standalone Medicare prescription drug plan if you're eligible.

Does Medicare Advantage include Part D?

Many Medicare Advantage plans include prescription drug coverage.

How much can a Part D deductible be in 2026?

For 2026, a Medicare drug plan's deductible cannot exceed $615. Some plans have lower deductibles or no deductible.

What happens after I meet my deductible?

You enter the plan's initial coverage stage.

Your actual costs depend on your specific plan and medications.

Is there still a Medicare Part D "donut hole"?

The old coverage-gap structure commonly called the "donut hole" has been replaced by the current Part D payment structure.

For 2026, Medicare describes a $2,100 out-of-pocket threshold for covered Part D drugs before catastrophic coverage applies.

Does every Part D plan cover every medication?

No. Plans have formularies—the lists of medications they cover. Two otherwise similar plans may have very different prescription costs depending on the medications you take.

What should I check before choosing a Part D plan?

Make a list of:

• Every prescription

• Dosage

• Frequency

• Generic vs. brand

• Preferred pharmacy

• Mail-order preferences

Then compare your medications against the plan's formulary and pharmacy network.

Can I avoid a Part D late enrollment penalty?

If you don't have other creditable prescription drug coverage, enrolling when you're first eligible can help avoid a late enrollment penalty.

JRF Services Tip

Don't select a prescription plan based solely on the monthly premium.

A low-premium plan can potentially cost more overall if your medications are expensive or placed in unfavorable tiers.