Medicare Part D Plan Finder 2027

The plan finder is only as accurate as the information you put in. Five minutes of preparation makes the difference between a rough guess and a real cost estimate.

If you are comparing standalone drug plans to use with Original Medicare or a Medigap plan, stay on the Part D results. If you are open to Medicare Advantage, run a second search for Medicare Advantage plans with drug coverage so you can compare the full cost of both routes.

The results list a lot of numbers. These are the ones that decide which plan is cheapest for you:

Plans put drugs on tiers, and each tier has its own copay or coinsurance. See Part D drug tiers explained.

Tier structures vary by plan. Check each plan’s formulary.

There are two ways to get Medicare drug coverage, and the plan finder searches both. A standalone Part D plan adds drug coverage to Original Medicare. A Medicare Advantage plan with drug coverage combines hospital, medical and drug coverage in one private plan.

If you have a Medigap plan, you need a standalone Part D plan, because Medigap does not cover prescriptions and you cannot use Medigap with Medicare Advantage. See the Medicare Advantage plan finder if you want to compare all-in-one plans.

For more, see how to choose a Medicare Part D plan.

If big drug costs hit early in the year, the Medicare Prescription Payment Plan lets you spread your out-of-pocket drug costs into monthly payments across the year instead of paying at the pharmacy counter. It is available with every Part D plan and Medicare Advantage plan with drug coverage, and it does not change the total you owe.

Where you fill prescriptions can change your yearly cost as much as which plan you choose. Most plans divide their network into preferred and standard pharmacies. Preferred pharmacies have lower negotiated prices and often lower copays; standard pharmacies are still in network but usually cost more. Out-of-network pharmacies are generally not covered except in limited situations.

If you take maintenance drugs for blood pressure, cholesterol, diabetes or thyroid, compare a 90-day mail-order fill in the plan finder. For many people it is the single easiest way to cut costs.

The plan finder estimates what you would pay from now through the end of 2027, based on each plan’s negotiated drug prices at the pharmacies you chose, the plan’s deductible and tier copays, and the $2,400 out-of-pocket cap. It assumes you fill every drug on your list as often as you entered it.

Estimates are only estimates. Your real cost can differ if you change drugs during the year, use a different pharmacy, or hit a coverage rule the estimate did not account for. Still, the ranking it produces, cheapest to most expensive for your list, is very reliable for choosing between plans.

Sometimes a drug you take is not on a plan’s 2027 formulary, or it carries a rule like prior authorization. You still have options:

See steps to appeal a Medicare Part D denial.

If you already have a Part D plan, your plan mailed an Annual Notice of Change by September 30, 2026. It lists 2027 changes to your premium, deductible, drug list, tiers and pharmacy network. Run your current plan through the plan finder alongside the alternatives, so you see its real 2027 cost instead of assuming it stays the same.

You do not have to compare plans alone, and you should not have to pay for help. These are the free options:

Before any call, have your Medicare card, your list of drugs and doses, your doctors and your preferred pharmacies ready. It turns a long conversation into a short one.