Medicare Drug Price Negotiation
How much will negotiated drug prices save me?
Last reviewed: · Big Sioux Benefits Data Desk
CMS projects about $1.5 billion in savings for people with Medicare prescription drug coverage in 2026 under the projected defined standard benefit design (CMS). That is the program-wide figure. What you personally save depends on two things: whether you take one of the ten drugs at all, and how your plan structures cost sharing for the tier it sits on.
The qualifier, and it is the part that disappoints people: if your plan charges a flat copay for that tier, a lower drug price may not change your payment at all, because your copay was never a percentage of the price. If your plan charges coinsurance, a percentage of the drug's cost, then a 56% price cut translates fairly directly into a smaller payment. Same drug, same negotiated price, two very different outcomes depending on plan design.
Who sees the savings
| Your situation | Likely effect on what you pay |
|---|---|
| Plan charges coinsurance on the drug's tier | Real reduction, roughly in proportion to the price cut |
| Plan charges a flat copay on that tier | Often no visible change |
| You are in the deductible phase | Real reduction, since you pay the drug's price directly |
| You reach the $2,100 cap either way | You pay $2,100 regardless, though you may reach it later in the year |
| You get Extra Help | Little change, your costs were already fixed low amounts |
Two wider effects are worth knowing even if your own copay is unchanged. CMS estimates that if the negotiated prices had been in effect in 2023, they would have cut net Medicare drug spending by about $6 billion, roughly 22%. Lower program spending feeds into the calculation of Part D premiums over time. And because Medicare pays less per fill, the drugs are less likely to push plans toward restrictive formulary decisions. For the mechanics of why your specific copay may not have moved, see why your copay did not drop.
Sources
- CMS — Medicare Drug Price Negotiation Program: Negotiated Prices for Initial Price Applicability Year 2026 — prices effective January 1, 2026; accessed 2026-08-21
- CMS — Announcement of Calendar Year 2026 Medicare Advantage Capitation Rates and Part C and Part D Payment Policies (Part D benefit parameters) — CY2026 parameters; accessed 2026-08-21
- Medicare.gov — Costs for Medicare drug coverage — accessed 2026-08-21
Related questions
Will my Part D premium go down because of negotiation?
Not directly and not immediately. Negotiation lowers what Medicare and plans pay for these drugs, which is one input among many into how plans set premiums. Premiums are also driven by the benefit redesign, plan-level bids, and regional factors, so a single member's premium can rise even as program spending falls.
I take one of the ten drugs and saw no change. Did something go wrong?
Probably not. The most common explanation is that your plan charges a flat copay for that drug's tier, so your payment is set by the tier rather than by the drug's price. It is still worth calling your plan to confirm the negotiated price is being applied on the claim.
Drug costs turn on your specific prescriptions, so the arithmetic is worth doing once, properly: book a free, no-pressure conversation, see your county's South Dakota plan lineup, or browse all answers. SHIINE, the state's free counseling program, is at 1-800-536-8197 and sells nothing.
Big Sioux Benefits is a licensed insurance agency, not affiliated with or endorsed by the U.S. government or the federal Medicare program. We do not offer every plan available in your area. Contact Medicare.gov, 1-800-MEDICARE, or SHIINE (South Dakota's SHIP) for all of your options.