Medicare Part D Costs: What You’ll Pay and How to Lower Your Bill
If you’re new to Medicare, figuring out your drug coverage costs can feel overwhelming. Part D plans vary widely, and the expenses go beyond just your monthly premium. So let’s break down exactly what you can expect to pay and how to keep those costs as low as possible.
What Is Medicare Part D?
Medicare Part D is your prescription drug coverage. It’s offered through private insurance companies approved by Medicare. You can get it as a standalone Prescription Drug Plan (PDP) paired with Original Medicare, or it can be bundled into a Medicare Advantage plan.
Either way, understanding what you’ll pay matters before you enroll.
The Main Medicare Part D Costs
Part D has several layers of cost-sharing. Here’s what each one means for your wallet.
Monthly Premium
Every Part D plan charges a monthly premium. The amount depends on which plan you choose and where you live. In 2026, premiums vary significantly from plan to plan, so comparing your options carefully makes a real difference.
Keep in mind that higher-income beneficiaries pay an additional amount called IRMAA on top of their plan premium. You can estimate your IRMAA surcharge using our Medicare IRMAA Calculator.
Annual Deductible
In 2026, the maximum Part D deductible is $615. Some plans charge the full deductible, while others charge less or waive it entirely for certain drug tiers. You’ll pay this amount out of pocket before your plan starts covering your prescriptions.
Copayments and Coinsurance
Once you meet your deductible, you’ll pay a copay or coinsurance for each prescription. The amount depends on the drug’s tier. Generic drugs typically cost the least, while specialty drugs can carry significant cost-sharing even after the deductible.
The Out-of-Pocket Cap
One of the biggest changes to Medicare Part D in recent years is the new out-of-pocket cap. Starting in 2025 and continuing in 2026, your out-of-pocket drug costs are capped at $2,100 per year. Once you hit that limit, your plan covers 100% of your covered drug costs for the rest of the year.
That’s a significant protection, especially for people who take expensive specialty medications.
What Happened to the Coverage Gap (Donut Hole)?
The coverage gap, commonly known as the donut hole, has been eliminated as of 2025. You no longer face a sudden increase in costs after reaching a certain spending threshold. The new structure moves directly from your initial coverage phase to catastrophic coverage, and with the $2,100 cap in place, your exposure is much more predictable.
How to Lower Your Medicare Part D Costs
Several strategies can help you pay less for your prescription drug coverage.
Compare Plans During Open Enrollment
Plan costs and drug formularies change every year. Comparing your options during the Medicare Annual Enrollment Period (October 15 through December 7) is one of the most effective ways to avoid overpaying.
Use the Medicare Plan Finder
Medicare.gov’s Plan Finder tool lets you enter your specific medications and compare what each plan would cost you over a full year. It accounts for your premium, deductible, and expected copays, so you’re looking at the true cost rather than just the monthly premium.
Ask About Lower-Cost Alternatives
Talk to your doctor about generic or lower-tier alternatives for your prescriptions. Switching to a drug that’s on a lower formulary tier can reduce your copays substantially without affecting your health outcomes.
Check for Extra Help (Low Income Subsidy)
If your income and resources fall below certain limits, you may qualify for the Extra Help program, also known as the Low Income Subsidy (LIS). This program can significantly reduce your Part D premiums, deductibles, and copays. You can apply through Social Security or your State Medicaid office.
Work With a Licensed Medicare Broker
A licensed Medicare broker can compare plans across multiple carriers on your behalf at no cost to you. Want to know how a Medicare broker gets paid? Carriers pay brokers directly, so you never pay a fee for professional guidance.
Part D vs. Medicare Advantage Drug Coverage
If you’re weighing your options, it’s worth understanding how standalone Part D plans compare to drug coverage bundled into a Medicare Advantage plan. Our guide on Medicare Advantage vs. Medicare Supplement walks through the key differences so you can make the right call for your situation.
Ready to Find the Right Part D Plan?
Choosing the right drug plan takes more than glancing at the monthly premium. It means looking at your specific medications, your preferred pharmacy, and the full cost picture over a year. That’s where working with an experienced Medicare broker pays off.
Craig Smith has helped hundreds of New Yorkers find the right Medicare coverage since 2013. With over 25 years in financial services and more than 317 five-star reviews across our Long Island and New York City offices, we’re ready to help you, too.
Book a free consultation today, and let’s find the plan that fits your prescriptions and your budget.
We are not connected with or endorsed by the United States Government or the federal Medicare program. We do not offer every plan available in your area. Any information we provide is limited to those plans we do offer in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options.
Craig Smith
Independent Medicare Insurance Broker | AHIP Certified
Craig Smith is the founder of Craig Smith Insurance Group, an independent Medicare brokerage serving seniors across New York, New Jersey, and nationwide since 2013. With over 25 years of financial services experience and 317+ five-star Google reviews, Craig helps clients compare Medicare Advantage, Medicare Supplement, and Part D plans — always free of charge.
Learn more about Craig →
