Medicare Part D

Medicare's 2027 Part D Cap in Tullahoma, TN

TULLAHOMA, Tenn. — If you take prescription drugs and have Medicare, 2027 continues some of the friendliest Part D rules in years. There's a firm ceiling on what you'll pay out of pocket at the pharmacy, a smaller number of stages to track, and an option to spread your drug costs across the year in monthly pieces.

Here's a plain-language look at how Part D works for 2027, what the phases mean, and the small mistakes that can trip people up during Annual Enrollment this fall.

The big number: the Part D out-of-pocket cap

For 2026, the most you can pay out of pocket for covered prescription drugs under any Medicare Part D plan is $2,100. Once your out-of-pocket spending on covered drugs hits that amount, you pay $0 for covered prescriptions for the rest of the calendar year.

This cap applies whether your Part D coverage comes through a stand-alone drug plan or is built into a Medicare Advantage plan that includes drug coverage. It resets every January 1.

The cap is a program-level rule set by the Centers for Medicare & Medicaid Services (CMS). It is not a promotion, and it is not tied to any specific plan.

The deductible: up to $615 in 2026 and $700 in 2027 and $700 in 2027

Part D plans can charge a deductible before cost-sharing kicks in. For 2026, the maximum deductible a plan can charge is $615. Some plans charge less than that, and some charge nothing at all — it depends on the plan's design.

A few things worth knowing:

• The deductible only applies to drugs the plan covers.
• Some plans waive the deductible on certain drug tiers (like generics) while still charging it on higher tiers.
• Whatever you pay toward the deductible counts toward moving you through the phases below.

The three phases of Part D

The old "donut hole" coverage gap was eliminated in 2025. Part D now has three phases, not four:

1. Deductible phase. You pay the full negotiated price for your drugs until you meet your plan's deductible (up to $615 in 2026, up to $700 in 2027). If your plan has no deductible, you skip straight to the next phase.

2. Initial coverage phase. You pay a copay or coinsurance for each prescription, and the plan pays the rest. You stay here until your out-of-pocket spending on covered drugs reaches the annual cap ($2,100 in 2026, $2,400 in 2027).

3. Catastrophic phase. After you hit the annual cap, you pay nothing for the rest of the year on covered drugs.

That's it. Three phases, one cap, one reset each January.

The Medicare Prescription Payment Plan

New in 2025 and continuing into 2027 is the Medicare Prescription Payment Plan, sometimes called "M3P" or drug-cost smoothing. It's optional and free to join.

Here's the idea: instead of paying a big pharmacy bill in a single month (say, if you fill an expensive prescription in January), you can ask your Part D plan to spread your out-of-pocket drug costs across the remaining months of the year in monthly payments. You still owe the same total — you just pay the plan monthly instead of the pharmacy at pickup.

This can help people who have high drug costs early in the year and would rather budget in even chunks. It doesn't help everyone. If your drug costs are low and steady, signing up may just add a bill to keep track of.

You can opt in through your Part D plan. Medicare.gov has a fact sheet with the details.

What Tullahoma residents should know locally

Tullahoma sits in Coffee County, and Part D plan availability — the number of stand-alone drug plans and the Medicare Advantage plans that include drug coverage — is set at the county level. That means every Medicare beneficiary with a Coffee County address sees the same menu of plans during Annual Enrollment. The 2027 lineup is listed in each plan's Annual Notice of Change and on Medicare.gov's Plan Finder.

To see the current-year options for your ZIP code, use the Plan Finder at medicare.gov/plan-compare. You can enter your specific medications and preferred pharmacy and see how each plan handles them.

Dates to remember

• Annual Enrollment Period: October 15 – December 7, 2026. This is when you can join, switch, or drop a Part D plan for 2027 coverage that starts January 1.
• Medicare Advantage Open Enrollment Period: January 1 – March 31. If you're in a Medicare Advantage plan, you can switch to another MA plan or return to Original Medicare (and pick up a stand-alone Part D plan) during this window.

Common mistakes to avoid

• Skipping the annual review. Plan formularies (drug lists) and cost-sharing can change every year. A plan that fit you in 2026 may not be the right match for 2027 — check the Annual Notice of Change your plan mailed.
• Only looking at the premium. The deductible, the tier your drugs fall on, and your pharmacy network can matter more than a low monthly premium.
• Waiting too long to enroll when first eligible. If you go without creditable drug coverage for too long after becoming eligible, you can face a late enrollment penalty that follows you for as long as you have Part D.
• Assuming the cap includes premiums. The cap ($2,100 in 2026, $2,400 in 2027) is based on what you pay out of pocket for covered drugs — not your monthly premium.