Medicare Plans 2027: What Changes on January 1 and What You Will Pay

Medicare Plans 2027: Medicare open enrollment opens today, October 15, and most of the big numbers for next year are already known before the window even starts. The Social Security Administration announced a 3.6 percent cost-of-living adjustment yesterday, worth about $75 a month to the average retired worker. CMS has locked in a $2,400 cap on out-of-pocket drug spending and a $700 maximum Part D deductible. Average Medicare Advantage premiums are projected to fall from $14.37 to $12 a month. The one number still missing is the standard Part B premium, which the Medicare Trustees project at $209.50 and CMS is expected to confirm in November. If you are comparing Medicare plans 2027 before the December 7 deadline, this guide puts the confirmed figures, the projections and the official links in one place. We will be updating this article monthly.

The headline is not all good news. The temporary subsidy program that held down standalone Part D premiums ends after 2026, and the national base beneficiary premium rises to $41.33. The administration told the Wall Street Journal that roughly three in four standalone drug plan members could pay more next year, with most increases under $20 a month, according to the Center for Medicare Advocacy. Medicare Advantage members face a different risk. Premiums may fall on average, but they swing widely by state, and Wyoming’s average is jumping from $45.91 to $69.23. A plan that worked well in 2026 may not be the right fit for 2027. Any change you make between October 15 and December 7 starts on January 1, 2027, so reading your Annual Notice of Change this week is worth the time.

Medicare Plans 2027 Key Highlights

Medicare Part B Premium 2027: Projected Cost and Deductible

Part B covers doctor visits, outpatient care, preventive services and some medical equipment. It is the part of Original Medicare that nearly everyone pays for each month, and for most people the premium comes straight out of the Social Security check.

CMS has not published the 2027 Part B figures. The best public estimate comes from the 2026 Medicare Trustees Report, released June 24, which puts the standard premium at $209.50 a month. That is $6.60 more than the $202.90 people pay now. The same report points to an annual deductible near $292, up from $283. A few private forecasters have floated a deductible closer to $310, so treat any single number as a planning figure until CMS speaks.

Our own check of the math: twelve months at $209.50 is $2,514, and adding a $292 deductible gives $2,806 before you pay any 20 percent coinsurance for care. Coinsurance stays at 20 percent for outpatient services after the deductible. Officials normally release the final premium, deductible and income brackets in November, ahead of the December 7 close of open enrollment. Mark that month on your calendar, because it is the last major piece of the puzzle.

Missing the Part B enrollment window carries a cost. The late enrollment penalty adds 10 percent to your premium for every full 12-month period you could have had Part B but did not, and it generally lasts as long as you have the coverage. If you have a low income, state Medicare Savings Programs can pay the Part B premium and, in some cases, other costs. Apply through your state Medicaid office; the Medicare.gov page linked below explains the tiers.

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Medicare Part D 2027: $2,400 Out-of-Pocket Cap and $700 Deductible

Unlike Part B, the 2027 Part D numbers are final. CMS announced them April 6. The maximum standard deductible rises from $615 to $700, an increase of about 13.8 percent and the largest percentage jump since Part D began in 2006. The annual out-of-pocket threshold climbs from $2,100 to $2,400, up about 14.3 percent.

Here is how the standard benefit works in plain terms. First you pay the full negotiated price of your drugs until you reach the deductible, though many plans charge less than $700 and some charge nothing. Then you pay a share, generally 25 percent in the standard design, until your own spending hits $2,400. After that you pay nothing for covered drugs until the plan year ends. The old coverage gap, sometimes called the donut hole, no longer exists.

A quick example shows the effect. If your covered drugs carry a negotiated price of $10,000 over the year, the standard benefit has you paying the $700 deductible plus 25 percent of the next costs until you reach $2,400. You would reach the cap once total drug costs hit about $7,500. Everything after that is covered. Your plan may use flat copays instead, which can lower costs before the cap but never raise the cap itself.

Two other pieces matter for 2027:

• The Medicare Prescription Payment Plan lets you spread out-of-pocket drug costs into monthly bills instead of paying a large amount at the pharmacy. If you hit the cap, a simple division works out to about $200 a month.
• Insulin covered by Part D plans continues to carry a $35 monthly limit.

Why Standalone Part D Premiums May Rise in 2027

CMS said in late July that the Part D Premium Stabilization Demonstration will not continue past 2026. The program, which cost about $9.8 billion across 2025 and 2026, cut the base premium and limited how much a standalone plan could raise its price in a year. In 2025 the cut was $15 and the cap on increases was $35. In 2026 those became $10 and $50.

Without that support, KFF warns that some standalone drug plan members could see bigger increases than in recent years. Averages tell a calmer story. CMS projects the average standalone premium moving from $35.09 to $36 in 2027, a rise of less than $1. Yet averages hide plan-by-plan moves. The national average monthly bid amount jumped about 24 percent to $296.05, which signals real cost pressure behind the scenes. The law limits yearly growth in the base beneficiary premium to 6 percent, and $41.33 is that maximum increase, but that does not cap what each plan charges you.

CMS also says 93 percent of beneficiaries without low income can find an enhanced Part D plan for less than $6 a month, and 88 percent can find a basic plan for $10.30 or less. Those figures hold only if you shop. Staying in your current plan out of habit is how people end up paying more than a neighbour with the same drugs.

Medicare Advantage Plans 2027: Premiums, Enrollment and Rule Changes

Medicare Advantage, also called Part C, is the private-plan option that bundles hospital and medical coverage and usually includes drug coverage. CMS projects 34 million people will be in these plans in 2027, about 47.4 percent of all Medicare enrollees. Actual enrollment has already topped that, with 36.1 million reported as of June. More than 99 percent of beneficiaries will have access to at least one plan, and 97 percent will have at least 10 to choose from. The total number of plans is roughly flat, near 5,500.

The average weighted premium is projected to fall 16.5 percent, from $14.37 to $12. For plans that include drugs, the average Part D premium after rebates is projected to drop 38 percent, from $11.32 to $7. State differences are large. Wyoming’s average rises from $45.91 to $69.23, Idaho’s from $27.81 to $37.93 and Connecticut’s from $16.89 to $25.31. Alabama sits near $7.76 on average, according to the CMS state fact sheet. Your county matters more than any national average.

Behind the scenes, CMS finalized a 2.48 percent average payment increase for plans in 2027, worth more than $13 billion, after proposing only 0.09 percent in January. CMS also decided not to adopt a new risk adjustment model for 2027. Insurers had pushed for more, so benefit trimming at the plan level is a real possibility. The Center for Medicare Advocacy and others expect the end of the Part D subsidy to push more standalone drug plan members toward Advantage, so competition may shift.

Several rule changes are worth knowing:

• Telehealth flexibilities for Medicare were extended through December 31, 2027 under the Consolidated Appropriations Act of 2026.
• Reports indicate Medicare Advantage plans will use electronic prior authorization starting January 1, 2027, letting patients see decisions in their portals.

Provider networks remain the most common reason people switch. One industry commentator noted nearly 3 million people had to find new plans last year after their plans changed or exited. Call your doctors and confirm they take the exact plan name, not just the insurer.

Social Security COLA 2027 vs the Part B Premium: Does Your Raise Survive?

The 3.6 percent COLA for 2027 is the largest since 2023 and follows 2.8 percent for 2026. It reaches about 72 million Social Security beneficiaries in January 2027, while about 7.3 million SSI recipients are paid the increase on December 31, 2026. The SSA says the average retired worker benefit rises from $2,095 to $2,170.

If the Part B premium lands at $209.50, the $6.60 increase takes a small bite out of that gain. The table shows the approximate effect for several benefit levels, using simple arithmetic.

Your own number can differ because of income-related surcharges, Part D premiums withheld from your check and tax withholding. SSA mails personalized COLA notices in December.

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Medicare IRMAA 2027: Income Brackets and Surcharges

The income-related monthly adjustment amount, or IRMAA, adds to your Part B and Part D premiums if your income is above a set level. The surcharge uses a two-year lookback, so 2027 premiums are based on your 2025 tax return. For 2026 the first threshold is $109,000 for single filers and $218,000 for married couples filing jointly. The 2026 Part B surcharges run from $81.20 to $487.00 a month, and the Part D surcharges run from $14.50 to $91.00. CMS usually publishes the 2027 brackets with the Part B announcement, so use 2026 figures as a conservative floor until then.

IRMAA works like a cliff. Crossing a threshold by one dollar can move you to the next tier. If your income dropped because of retirement, marriage, divorce or the death of a spouse, you can ask SSA to reconsider using Form SSA-44. Part B IRMAA is deducted automatically, while the Part D surcharge is billed directly by Medicare even if your employer pays your plan premium.

Medicare Open Enrollment 2026 Dates and Deadlines

During open enrollment you can switch from Original Medicare to Medicare Advantage or back, change Advantage plans, and join, drop or switch a Part D plan. If you miss the deadline, your options narrow sharply, so do not wait until the last week.

How to Apply for Medicare or Change Your 2027 Plan

If you are turning 65, your Initial Enrollment Period lasts seven months. It starts three months before the month you turn 65, includes your birthday month and ends three months after. Apply online through the Social Security Administration. You can also call SSA at 1-800-772-1213 or visit a local office. People already getting Social Security benefits are usually enrolled in Parts A and B automatically at 65.

If you already have Medicare and want to change plans for 2027, follow this order:

1. Read your Annual Notice of Change from your current plan. It should have arrived in September and lists your 2027 premium, deductible and benefit changes.
2. Log in to your Medicare account and open Medicare Plan Finder. Add your drugs, dosages and pharmacy so the tool can estimate yearly costs.
3. Compare total yearly cost, not just the monthly premium. Add the premium, deductible, drug costs and the maximum out-of-pocket limit for medical care.
4. Confirm that your doctors, hospital and pharmacy are in network.
5. Enroll through Plan Finder, with the plan directly, or by calling 1-800-MEDICARE. Your last choice made before December 7 is the one that counts.

If you want free, unbiased help, your State Health Insurance Assistance Program, known as SHIP, offers counseling at no charge.

Medicare Enrollment Processing Time

Processing times vary, and no official guarantee covers every case, so treat the following as typical rather than promised. Plan changes submitted by December 7 are meant to take effect on January 1, 2027. Plans generally send a confirmation and a new member card before the new year. If you have heard nothing by mid-December, call the plan and ask for written confirmation. New Medicare applications handled by SSA can take longer if documents or proof of age or work history are needed, so apply as early in your seven-month window as you can.

Medicare Payment Schedule: How and When You Pay

• Part B premium: taken from your monthly Social Security or railroad retirement check. If you do not receive those benefits, Medicare bills you, either quarterly or through Medicare Easy Pay from a bank account.
• Part D and Medicare Advantage premiums: paid to the plan by monthly bill, automatic bank draft or withheld from your Social Security payment.
• IRMAA for Part D: billed directly by Medicare.
• Medicare Prescription Payment Plan: your Part D plan sends monthly bills for drug costs you chose to spread out.
• New premiums start in January 2027. If your Part B premium is deducted, the first check showing the new amount arrives in January.

Medicare Open Enrollment Changes, Who Must Switch and How to Compare Plans

Social Security 2027 COLA Increase Chart PDF: See The Latest Estimates From AARP & TSCL, New Monthly Amount

Medicare Cost Calculator for 2027

Use the calculator below to test your own numbers. Enter your monthly Social Security benefit, the COLA, your Part B premium, any IRMAA tier and your expected drug spending. It then estimates your 2027 net deposit change, your yearly Part B cost and your Part D out-of-pocket spending under the standard benefit. The default Part B premium uses the Trustees projection and the IRMAA amounts use 2026 figures, so replace them when CMS publishes the final 2027 numbers.

Official Medicare Websites and Resources

Medicare Plans 2027 FAQs

Conclusion

The picture for Medicare plans 2027 is mixed. Prescription drug protection is stronger on paper with the $2,400 cap, Advantage premiums are projected to fall on average and the 3.6 percent COLA gives most retirees room to absorb a modest Part B increase. At the same time, the end of the standalone drug plan subsidy, the higher deductible and large differences between states mean your own plan could cost more next year. The smartest move is simple. Pull your Annual Notice of Change, run your medications through Plan Finder, confirm your doctors are in network and decide before December 7. We will keep this page updated as CMS releases the final Part B premium, deductible and IRMAA brackets.

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