Your Standalone Medicare Part D Premium Is Rising for 2027

A federal program called the Part D Premium Stabilization Demonstration has been paying money directly to insurers that sell standalone Medicare drug plans since January 1, 2025, to keep monthly premiums lower. On July 29, 2026, the Centers for Medicare & Medicaid Services announced that program will not continue into 2027. The subsidy expires December 31, 2026, and new, higher premiums take effect January 1, 2027, for people enrolled in a standalone Part D plan.

You have time to prepare for this. Medicare's fall open enrollment period runs October 15 through December 7, and that window is exactly when you should compare your new premium against every plan available in your area. This guide walks through what changed, who it affects, and what to check before you commit to a plan for next year.

Why This Subsidy Is Ending

The Part D Premium Stabilization Demonstration was a temporary program, not a permanent part of Medicare. Since January 1, 2025, it paid standalone Part D insurers directly so they could hold premiums down instead of passing the full cost of drug coverage to enrollees. The Medicare Payment Advisory Commission found the subsidy lowered the average standalone Part D premium by roughly $16 a month in 2026. CMS's July 29, 2026 announcement means that support goes away at the end of this year, and insurers will set 2027 prices without it.

What you actually pay depends on your specific plan, not a single national number. Use the checklist below to confirm where you stand before your renewal notice arrives.

Who Actually Pays More

This change is specific to standalone Part D plans, the drug coverage people buy separately when they have Original Medicare. If you have Medicare Advantage with drug coverage built in, your costs are set by your Advantage plan's own pricing, and you're largely insulated from this particular subsidy ending. If you receive Extra Help, also called the Low-Income Subsidy, you're protected from the premium increase regardless of which type of plan you have.

Knowing which group you're in changes how urgently you need to act. The timeline below shows what happens between now and January, and when your own number becomes final.

What to Do During Open Enrollment

Open enrollment is your one guaranteed chance each year to change Part D or Medicare Advantage plans without a special circumstance. Once your 2027 premium is posted, log into Medicare's Plan Compare tool, enter your current medications, and see what the same drugs would cost on other plans before you assume your current plan is still the best fit.

A side-by-side comparison catches savings a renewal notice alone won't show you, especially if your current plan's premium rose more than the roughly $16 a month the subsidy used to offset.

If You Qualify for Extra Help

Extra Help pays part of your Part D premium, deductible, and drug costs if your income and resources fall under a limit that changes each year. Because it's a federal subsidy tied to your income rather than a plan-level discount, it isn't affected by the Part D Premium Stabilization Demonstration ending. If you already have it, this change shouldn't raise your premium at all.

If you aren't sure whether you qualify, don't guess. The income and resource limits move each year, and people who assume they're over the limit sometimes aren't.