The Medicare Part D out-of-pocket cap is real, and it puts a yearly ceiling on what you pay for covered prescription drugs. It started on January 1, 2025, and once your spending reaches the limit, you pay nothing more for covered Part D drugs for the rest of the calendar year. It's one of the biggest changes to Medicare drug coverage in years, and it replaced the old coverage gap people called the donut hole.
In This Guide
- Key Takeaways
- Is There a Cap on Part D Drug Costs?
- How the Medicare Part D Out-of-Pocket Cap Works in 2026
- What Counts Toward the Medicare Part D Out-of-Pocket Cap
- What Happened to the Donut Hole
- Frequently Asked Questions
- Learn More
Is There a Cap on Part D Drug Costs?
The short answer? Yes. For the first time, there's a hard ceiling on what you spend out of pocket on covered Part D drugs in a single year. It came out of the Inflation Reduction Act and took effect on January 1, 2025.Centers for Medicare & Medicaid Services. (n.d.). How much does Medicare drug coverage cost?. medicare.gov. Retrieved Jul 17, 2026, from https://www.medicare.gov/health-drug-plans/part-d/basics/costs
The number most people remember is $2,000, and that was right for 2025, the cap's first year. But the cap is indexed, which means it rises a little each year to keep pace with drug costs. So for 2026, the annual out-of-pocket limit is $2,100.Centers for Medicare & Medicaid Services. (n.d.). How much does Medicare drug coverage cost?. medicare.gov. Retrieved Jul 17, 2026, from https://www.medicare.gov/health-drug-plans/part-d/basics/costs If you come across an older article quoting $2,000, it isn't wrong. It's just last year's figure.
How the Medicare Part D Out-of-Pocket Cap Works in 2026
Think of it as one running total across the calendar year. Once you're past any plan deductible, you generally pay 25% of the cost of your covered generic and brand-name drugs, and every out-of-pocket dollar you spend on covered Part D drugs adds to your total.Centers for Medicare & Medicaid Services. (n.d.). How much does Medicare drug coverage cost?. medicare.gov. Retrieved Jul 17, 2026, from https://www.medicare.gov/health-drug-plans/part-d/basics/costs
When that total reaches $2,100 in 2026, you cross into what Medicare calls the catastrophic coverage stage. From that point on, you pay $0 for your covered Part D drugs for the rest of the calendar year.Centers for Medicare & Medicaid Services. (n.d.). How much does Medicare drug coverage cost?. medicare.gov. Retrieved Jul 17, 2026, from https://www.medicare.gov/health-drug-plans/part-d/basics/costs So if your prescriptions are expensive enough that your share adds up to the cap by, say, late summer, the rest of your covered fills for that year cost you nothing.
The counter resets every January 1. The cap is a yearly ceiling, not a once-in-a-lifetime one, so a new total starts fresh each year.
What Counts Toward the Medicare Part D Out-of-Pocket Cap
Only your out-of-pocket spending on covered Part D drugs counts toward the cap, meaning the medications on your plan's formulary that your Part D coverage pays a share of.Centers for Medicare & Medicaid Services. (n.d.). How much does Medicare drug coverage cost?. medicare.gov. Retrieved Jul 17, 2026, from https://www.medicare.gov/health-drug-plans/part-d/basics/costs A drug your plan doesn't cover won't move you toward the $2,100 limit in 2026, which is why it pays to know your formulary before the year starts. If something you take isn't on it, raise it with your plan or your doctor early, since a covered alternative may exist and switching could change how quickly you reach the cap.
What Happened to the Donut Hole
If you've been on Medicare for a while, you probably remember the coverage gap, the stretch nicknamed the donut hole where your share of drug costs changed after you'd spent a certain amount for the year. The new cap replaced that whole structure.Centers for Medicare & Medicaid Services. (n.d.). How much does Medicare drug coverage cost?. medicare.gov. Retrieved Jul 17, 2026, from https://www.medicare.gov/health-drug-plans/part-d/basics/costs Under the old design, you kept paying a share of your drug costs even after the gap. Now there's a single hard out-of-pocket limit, and once you reach it, you're done paying for covered drugs until the next year.
For the fuller history of how the gap worked and where it went, we walk through it in our guide to the Part D coverage gap.
Frequently Asked Questions
Is the Part D cap $2,000 or $2,100?
Both numbers are real; they just belong to different years. The cap was $2,000 in 2025, its first year. Because it's indexed to rise with drug costs, the 2026 out-of-pocket limit is $2,100.Centers for Medicare & Medicaid Services. (n.d.). How much does Medicare drug coverage cost?. medicare.gov. Retrieved Jul 17, 2026, from https://www.medicare.gov/health-drug-plans/part-d/basics/costs
What happens after I hit the cap?
You move into Medicare's catastrophic coverage stage and pay $0 for your covered Part D drugs for the rest of the calendar year.Centers for Medicare & Medicaid Services. (n.d.). How much does Medicare drug coverage cost?. medicare.gov. Retrieved Jul 17, 2026, from https://www.medicare.gov/health-drug-plans/part-d/basics/costs The limit then resets the following January.
Does this mean the donut hole is gone?
Yes. The cap replaced the old Part D coverage gap. Instead of paying a share of costs after a gap, you now have one hard yearly limit on out-of-pocket spending for covered drugs.Centers for Medicare & Medicaid Services. (n.d.). How much does Medicare drug coverage cost?. medicare.gov. Retrieved Jul 17, 2026, from https://www.medicare.gov/health-drug-plans/part-d/basics/costs
Does the cap cover every medication I take?
The cap tracks your out-of-pocket spending on covered Part D drugs, meaning the ones on your plan's formulary.Centers for Medicare & Medicaid Services. (n.d.). How much does Medicare drug coverage cost?. medicare.gov. Retrieved Jul 17, 2026, from https://www.medicare.gov/health-drug-plans/part-d/basics/costs If you're not sure whether a specific drug is covered, check your plan's formulary or ask your plan directly before you fill it.
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