If you are on Medicare — or getting close — fall is the season to pay attention. Medicare’s Annual Open Enrollment Period runs from October 15 through December 7 each year, and it is the one window when most beneficiaries can change their Part D drug plan or Medicare Advantage coverage for the coming year. For 2027, those changes matter more than usual. Premiums, out-of-pocket caps, drug costs, and plan networks are all shifting, and the notices landing in your mailbox right now are your first alert.
Here is a plain-English guide to what is changing in 2027, which dates to circle on your calendar, and how to use the next few weeks to protect your budget and your care.
Why 2027 Notices Are Arriving Now
By law, plans must send their Annual Notice of Change (ANOC) and Evidence of Coverage (EOC) to enrollees before the next plan year begins. These packets spell out exactly what will change on January 1 — your monthly premium, deductible, copays, drug tiers, and whether your doctors and pharmacies will still be in-network.
Many people toss these envelopes without opening them. That is a costly mistake. A plan that looked perfect in 2026 can quietly drop a medication from its formulary or raise a specialist copay for 2027. The notice is your early warning system, and it gives you time to shop instead of scrambling in January.
Key Cost Changes to Watch for in 2027
Several moving parts affect what you actually pay. Keep an eye on these:
Part B premiums and deductibles. Standard Part B costs are announced each fall and typically rise year over year. Because Part B premiums are usually deducted from Social Security checks, a higher premium means a smaller monthly deposit — and for many seniors, that is the change they feel first.
The Part D out-of-pocket cap. Under the redesigned drug benefit, Part D enrollees now have a hard annual cap on what they pay out of pocket for covered prescription drugs. Once you hit that ceiling, you pay nothing more for covered medications for the rest of the year. This protection has been a game-changer for people with expensive brand-name drugs, but the dollar amount adjusts annually, so check your plan’s materials for the 2027 figure.
The Medicare Advantage out-of-pocket maximum. If you are in Medicare Advantage, your plan has a yearly limit on in-network spending. Those limits vary widely by plan, and some plans raise them for the new year. Comparing that number — not just the premium — is how you spot a plan that only looks cheap.
Premium surcharges for higher incomes. Beneficiaries above certain income thresholds pay an income-related monthly adjustment amount (IRMAA) on Part B and Part D. If your income dropped because of retirement, you may be able to request a reduction using the proper Social Security form.
Your 2027 Open Enrollment Checklist
Open Enrollment is not just for switching plans — it is a chance to confirm you are still in the right one. Work through this list before December 7:
1. List every prescription you take. Include dosage and frequency. Then check your plan’s 2027 formulary to confirm each drug is still covered and see which tier it lands on.
2. Verify your doctors and hospitals. Network changes are common. Call your providers directly and ask whether they will accept your 2027 plan — do not rely on the printed directory alone.
3. Compare total yearly cost, not just premiums. Add up premiums, deductibles, copays for your specific drugs, and expected out-of-pocket maximums. A low premium with high drug copays can cost far more overall.
4. Check pharmacy coverage. Preferred pharmacies can dramatically lower your copays, but the preferred list changes. Confirm your local pharmacy is still in the network.
5. Review supplemental coverage. If you are on Original Medicare, your Medigap policy can fill the gaps that Part A and Part B leave behind. Note that Medigap plans are not part of Open Enrollment the same way — in most states you need to act during your Medigap Open Enrollment Period or qualify for a guaranteed-issue right to switch without medical underwriting.
Special Enrollment Periods and Other Key Dates
Not everyone makes changes during the fall window. If you move to a new service area, lose employer coverage, or experience another qualifying life event, you may be eligible for a Special Enrollment Period outside the standard timeline. There is also a Medicare Advantage Open Enrollment Period from January 1 through March 31, which lets Advantage enrollees make a one-time switch to another Advantage plan or back to Original Medicare.
Two more dates worth penciling in: the General Enrollment Period for people who missed their initial sign-up, and the Medicare Advantage Open Enrollment window in early 2027. Missing a deadline can mean gaps in coverage or late-enrollment penalties that follow you for life, so mark them now.
Do Not Go It Alone
Medicare paperwork is dense, and the stakes are real. The good news is that free, unbiased help exists — through your State Health Insurance Assistance Program (SHIP), through plan comparison tools on Medicare.gov, and through licensed agents who can walk you through the trade-offs without charging you a fee.
Start early. Gather your drug list, your provider list, and your current plan documents. Then compare options side by side, because the best plan for your neighbor is not automatically the best plan for you.
The Bottom Line
2027 brings meaningful changes to premiums, drug costs, and out-of-pocket limits. The seniors who come out ahead are the ones who read their notices, do the math, and act before December 7. A few hours of homework now can save you hundreds — sometimes thousands — over the coming year.
Ready to see your options? Visit medigapplanfinders.com for free, no-obligation Medicare and Medigap quotes. Compare plans in your ZIP code, review costs side by side, and get clear answers before your deadline arrives. Your future self will thank you.
