Medicare Part D in 2026: What’s New and How to Lower Your Drug Costs
Medicare Part D — the program that helps cover prescription drug costs — has undergone some of its most significant changes in decades, thanks to provisions from the Inflation Reduction Act. If you’re enrolled in Medicare (or will be soon), understanding these changes could save you thousands of dollars per year on prescription medications.
This guide breaks down what’s new in Part D for 2026, how the new out-of-pocket cap works, and practical strategies to reduce your drug costs regardless of your current coverage situation.
The Biggest Change: A $2,000 Annual Out-of-Pocket Cap
Beginning in 2025 (and continuing into 2026), Medicare Part D has a new annual out-of-pocket maximum of $2,000 for covered prescription drugs. This is a landmark change.
Previously, Part D had no true out-of-pocket cap. The old structure included a coverage gap (the “donut hole”) where beneficiaries faced significantly higher drug costs until reaching catastrophic coverage — which itself still required 5% coinsurance with no upper limit. In practice, Medicare beneficiaries with serious conditions taking expensive brand-name drugs could face $5,000–$10,000 or more in annual drug costs.
Under the new structure:
- The donut hole is eliminated
- Once you’ve spent $2,000 in covered drug costs in a plan year, you pay $0 for the rest of the year
- This cap is indexed to inflation in future years
For people on expensive specialty medications — cancer treatments, biologics for rheumatoid arthritis, multiple sclerosis drugs, and others — this cap is potentially life-changing.
The Medicare Prescription Payment Plan (Smoothing Option)
Also new for 2025–2026: Medicare beneficiaries who reach the $2,000 out-of-pocket maximum can now spread their out-of-pocket drug costs across the entire year through the Medicare Prescription Payment Plan (also called the “capping out” or “smoothing” option).
How it works: Instead of paying a large drug cost in January (when you might hit your deductible and initial coverage phases in the first few months), you can opt in to have your Part D plan calculate an equal monthly payment spread across 12 months. This doesn’t reduce the total amount you pay — it’s still capped at $2,000 — but it prevents catastrophic cash flow situations for people who take expensive drugs.
To enroll in this payment option, contact your Part D plan directly. Enrollment is typically available during the Annual Enrollment Period (October 15 – December 7) or at certain other times.
Part D in 2026: What to Expect for Premiums and Deductibles
While the out-of-pocket cap is excellent news, it’s important to watch for premium increases. When insurers take on more drug cost risk (as they do under the new cap structure), premiums can rise. For 2026:
- The base beneficiary premium for Part D is expected to be around $36–$40/month on average, though this varies significantly by plan
- The maximum Part D deductible for 2026 is $590 (plans can have lower or no deductible)
- High-income beneficiaries continue to pay an Income-Related Monthly Adjustment Amount (IRMAA) surcharge on Part D premiums
These figures change annually, so verify current amounts at Medicare.gov or by calling 1-800-MEDICARE.
How to Choose the Right Part D Plan
Not all Part D plans are equal. The right plan for you depends on which drugs you take, your local pharmacy preferences, and your budget. Here’s a systematic approach:
Step 1: List All Your Prescriptions
Write down every medication you take (generic name is best), the dose, and how many times per month you take it. Include over-the-counter medications that have prescription equivalents.
Step 2: Use the Medicare Plan Finder Tool
Go to Medicare.gov/plan-compare and enter your medications. The tool will show you every Part D plan available in your area, the annual cost for your specific drug list under each plan, and monthly premiums. This is the most powerful tool available for Part D comparison shopping — use it every year during open enrollment.
Step 3: Check Your Drugs Are in the Formulary
Every Part D plan has a formulary (list of covered drugs) divided into tiers, with lower tiers (generic) costing less and higher tiers (brand, specialty) costing more. Make sure all your medications are covered in the plan you’re considering, and check which tier they fall on.
Step 4: Consider Pharmacy Networks
Preferred pharmacy networks offer lower copays. If you have a preferred pharmacy (local independent, mail-order, chain), make sure the plan you choose includes that pharmacy in its preferred network.
Step 5: Compare Total Annual Cost
Don’t just look at the premium. Calculate total annual cost: annual premiums + deductible + estimated cost-sharing for your specific drugs. The Medicare Plan Finder does this calculation automatically. A plan with a $50/month premium might cost you far more overall than a plan with a $70/month premium, depending on your drugs.
Extra Help: Are You Eligible for Low-Income Subsidy?
The Extra Help program (also called the Low-Income Subsidy or LIS) provides significant help with Part D premiums and cost-sharing for people with limited income and assets. In 2026:
- Income limit: approximately $23,000 for individuals, $31,000 for married couples (these figures are updated annually)
- Asset limit: approximately $16,000 for individuals, $32,000 for couples (not counting home, car, burial funds)
- Benefit: greatly reduced or eliminated Part D premiums, deductible waived, and very low copays ($1–$10 per prescription)
Many eligible people never apply. If you’re near these income/asset thresholds, apply at SSA.gov or call the Social Security Administration at 1-800-772-1213. Being approved for Extra Help automatically enrolls you in the Medicare Savings Program (which also helps with Part B premiums) if eligible.
Strategies to Reduce Drug Costs Beyond Part D
Ask About Generics
Generic medications contain the same active ingredients as brand-name drugs at 80–90% lower cost. Always ask your doctor or pharmacist whether a generic version is available.
Compare GoodRx With Your Plan
Surprisingly, GoodRx prices are sometimes lower than your Part D plan’s copay for certain generic drugs. You can’t use both simultaneously, but checking both prices is worth the 30 seconds it takes. GoodRx is free to use.
Manufacturer Patient Assistance Programs
For expensive brand-name drugs, pharmaceutical manufacturers often have patient assistance programs (PAPs) that provide free or discounted medication for people who qualify based on income. Medicare beneficiaries can sometimes participate in PAPs for certain drugs. The website NeedyMeds.org aggregates many of these programs.
Pill Splitting
For certain medications (always confirm with your doctor first), taking a higher-dose tablet and splitting it can cut costs in half. This only works for certain tablet types — never split extended-release, enteric-coated, or capsule medications.
The Bottom Line
The $2,000 Part D out-of-pocket cap is one of the most significant improvements to Medicare drug coverage in the program’s history. Combined with smart plan selection during Annual Enrollment and strategies like generic substitution and Extra Help enrollment, most Medicare beneficiaries can significantly reduce their prescription drug costs in 2026.
The Annual Enrollment Period (October 15 – December 7) is your annual opportunity to switch plans. Don’t miss it — and don’t assume your current plan is still the best fit. Review your plan every year.