Retirees got two pieces of big news this week. On October 14, 2026, the Social Security Administration announced that benefits will rise 3.6% beginning in January 2027. One day later, on October 15, Medicare open enrollment opened for the year. The two events are linked, because the raise you see on paper is only part of the story. What you keep depends on your health plan choices and on what Medicare charges you next year.

This guide breaks down the 2027 cost-of-living adjustment (COLA), the Medicare numbers that matter, and the steps worth taking before the December deadline.

The 2027 Social Security COLA: What Was Announced

According to a report from Good Morning America dated October 14, 2026, the 2027 COLA is 3.6%, up from the 2.8% increase for 2026. The Social Security Administration said the average recipient will see about $75 more per month. The SSA commissioner’s statement cited 76 million Americans, though some news reports used a lower figure of more than 70 million.

The adjustment is set once a year using inflation data. September inflation figures, which were released on the same day as the announcement, were the final piece needed to calculate it, and the report noted that higher gasoline prices were a large driver. A smaller raise than people hoped for is still a real increase, and 3.6% is above last year’s 2.8%.

Key Dates for Your Benefit Notice

• Late November 2026: new benefit amounts begin to appear in online my Social Security accounts.
• Early December 2026: mailed notices begin to go out.
• January 2027: the higher benefit takes effect.

A Change for Higher Earners

The report also said the taxable maximum, the cap on earnings subject to Social Security payroll tax, will rise from $184,500 to $192,300 in 2027. That mainly affects workers with higher incomes, who will pay Social Security tax on a larger slice of their pay.

Why a 3.6% Raise Does Not Always Feel Like 3.6%

A COLA is supposed to help benefits keep pace with prices. In practice, several things can take a bite out of it:

• Medicare Part B premiums. Most beneficiaries have the Part B premium deducted directly from their Social Security check, so a higher premium reduces the net raise.
• Personal inflation. The COLA is based on an index tied to wage earners, and your own costs for housing, food, health care and fuel may rise faster or slower.
• Taxes. A higher benefit can push more of your Social Security income into taxable territory, depending on your total income.

Medicare’s 2027 Numbers

Medicare open enrollment runs from October 15 to December 7, 2026. Changes you make generally take effect January 1, 2027. Based on figures compiled in an October 12 SavingAdvice report, here is what to expect. Treat the Part B number as a projection, not a final price.

• Part B premium (projected): $209.50 per month in 2027, up from $202.90 in 2026. That is an increase of $6.60 a month, or about $79 a year. The figure comes from the 2026 Medicare Trustees Report, and the final amount is expected to be announced by the government later this fall. We could not confirm a final number as of this writing.
• Part D deductible: the maximum allowed rises to $700 from $615. Some plans charge less, or nothing.
• Part D out-of-pocket cap: $2,400 in 2027, up from $2,100. Monthly premiums do not count toward this cap.
• Average Medicare Advantage premium (projected): a decline from $14.37 to about $12.
• Average standalone Part D premium (projected): a small rise from $35.09 to about $36.

If the Part B projection holds, the $6.60 monthly increase would absorb a small share of the roughly $75 average COLA increase. Most retirees still come out ahead, but the margin is thinner than the headline suggests. Your personal numbers will differ based on your benefit, your plan and your income.

Who Should Pay Attention to Open Enrollment

You do not have to change anything if you are happy with your coverage, but “I’ll just renew” can be an expensive default. Plans change their premiums, drug lists, pharmacy networks and doctor networks every year. A drug that was covered in 2026 may be on a higher cost tier or dropped in 2027. Open enrollment is the main window to switch between Medicare Advantage plans, change Part D drug plans, or move from Medicare Advantage back to Original Medicare.

What You Can Do Now

1. Read your Annual Notice of Change. Your current plan must tell you how its costs and coverage will change next year. Read it before you decide to stay.
2. Make a list of your medications. Include dose and how often you take each one. Then compare plans using Medicare’s online Plan Finder, which estimates total annual cost for your specific drugs.
3. Look at total yearly cost, not just the premium. A plan with a low monthly premium can carry a high deductible, high copays or a limited network. Add up premiums, deductibles and expected out-of-pocket costs.
4. Check that your doctors and hospitals are in network. This matters most for Medicare Advantage plans, which use networks.
5. Be careful before leaving Medicare Advantage. If you switch to Original Medicare and want a Medigap supplement policy, check your eligibility. In many states, insurers can review your health history and may charge more or decline you outside certain protected windows.
6. Get free help. Your State Health Insurance Assistance Program (SHIP) offers unbiased counseling, and you can call 1-800-MEDICARE.
7. Build the raise into your budget. Once your notice arrives, write down your new net benefit after the Part B premium and any other deductions. Plan your 2027 spending from that number, not from the headline COLA.
8. Watch for scams. Open enrollment brings a wave of robocalls and fake “benefit” offers. Medicare will not call you out of the blue to sell you a plan or ask for your Social Security number.

What to Watch Next

• The final 2027 Part B premium. The $209.50 figure is a projection. Watch for the official announcement and compare it with your COLA.
• Your Social Security notice. Log in to your online account in late November, or watch your mail in early December, to confirm your new benefit amount.
• The December 7 deadline. Make your plan decisions with time to spare, since sites get busy near the end.
• Next year’s inflation. A 3.6% COLA reflects the past year’s price pressures. If prices keep rising, the 2028 adjustment will tell the next chapter.

The Bottom Line

The 3.6% COLA is welcome news, and about $75 more a month on average is real money. But the benefit raise and the Medicare changes arrive together, so the smart move is to look at both at once. Spend an hour this fall reviewing your plan and your medications. A good choice at open enrollment can save more over a year than any cost-of-living adjustment adds.

This article is for information only and is not financial advice.