Medicare 2026

Social Security's 2027 COLA Is 3.6%: What It Means for Your Medicare Costs

On October 14, 2026, the Social Security Administration announced a 3.6 percent cost-of-living adjustment (COLA) for 2027. The increase applies to Social Security benefits starting with payments in January 2027, and to Supplemental Security Income (SSI) payments beginning December 31, 2026. For most beneficiaries, that bump will land in the same check that pays their Medicare Part B premium — so the dollars you actually see depend on both numbers. Here's a plain-English look at what's known, what's not yet announced, and what to watch for this fall.

Putting the 3.6 percent in context

A 3.6 percent COLA is noticeably larger than the last three adjustments: 3.2 percent for 2024, 2.5 percent for 2025, and 2.8 percent for 2026. It's the biggest annual boost since the 8.7 percent COLA that took effect in 2023, which reflected the pandemic-era inflation spike. The COLA is designed to help Social Security benefits keep pace with changes in the cost of living, as measured by a federal consumer price index.

If you're already receiving Social Security, the higher benefit begins with your January 2027 payment. If you receive SSI, the increase applies starting with the payment issued December 31, 2026.

Why the COLA and Medicare are linked

Most people enrolled in Medicare Part B have their monthly premium deducted directly from their Social Security benefit. That means the amount deposited into your bank account each month reflects two moving parts: your gross Social Security benefit (now 3.6 percent higher) and your Part B premium.

The 2027 Part B standard premium and annual deductible have not been announced. CMS typically releases those figures in the fall. The same is true for the income-related monthly adjustment amount (IRMAA) thresholds, which determine whether higher-income beneficiaries pay a surcharge on top of the standard Part B and Part D premiums. Until CMS publishes those numbers, any projection of your 2027 net check is just a guess.

The "hold harmless" rule — and who it doesn't cover

A federal provision known as "hold harmless" protects most people whose Part B premium is deducted from their Social Security benefit. In short, a year-over-year increase in the Part B premium cannot cause your net Social Security payment to fall below the prior year's amount. With a 3.6 percent COLA, most beneficiaries have a healthy cushion, so hold harmless is unlikely to be a factor for the typical enrollee in 2027.

However, hold harmless does not apply to everyone. People who are new to Medicare or to Social Security, people who pay their Part B premium directly rather than through a Social Security deduction, and people who pay an income-related (IRMAA) surcharge are not covered by this protection. If you fall into one of those groups, your Part B premium increase — whatever CMS announces — will apply in full.

What is set for Part D in 2027

While Part B specifics are still pending, several Part D figures for 2027 are already set at the federal level:

• The annual out-of-pocket cap on covered Part D drugs rises to $2,400, up from $2,100 in 2026. Once your out-of-pocket spending on covered drugs hits that limit, you pay $0 for covered prescriptions for the rest of the calendar year.
• The maximum deductible a Part D plan may charge is $700. Individual plans may set a lower deductible or none at all.
• The base beneficiary premium — a national benchmark used in Part D calculations — is $41.33. The premium you actually pay is set plan by plan and varies.

Because actual Part D plan premiums, formularies, and pharmacy networks vary, it's worth reviewing your coverage during the Medicare Annual Enrollment Period (October 15 to December 7) to make sure your current plan still fits your prescriptions and budget for the coming year.

Medicare Advantage vs. Original Medicare + Medigap

If you're weighing how you receive your Medicare benefits, keep in mind that both paths have trade-offs:

• Original Medicare (Parts A and B), often paired with a standalone Part D plan and a Medigap policy, generally lets you see any provider nationwide that accepts Medicare. Medigap can reduce out-of-pocket exposure but adds a monthly premium, and Medigap availability and pricing rules vary.
• Medicare Advantage (Part C) plans bundle hospital, medical, and usually drug coverage, often with extra benefits, but typically use provider networks and require prior authorization for certain services. Premiums, cost-sharing, and benefits differ from plan to plan.

Neither approach is universally better. The right fit depends on your health, prescriptions, preferred providers, travel patterns, and budget.

Dates and windows to keep in mind

• Medicare Annual Enrollment Period: October 15 – December 7, for coverage effective January 1.
• Medicare Advantage Open Enrollment Period: January 1 – March 31, for people already in a Medicare Advantage plan who want to switch to another MA plan or return to Original Medicare.
• CMS typically announces the next year's Part B premium, Part B deductible, and IRMAA thresholds in the fall.

What does this mean for people with Medicare?

A 3.6 percent COLA is welcome news, but your actual 2027 Medicare math won't be clear until CMS publishes the Part B premium, Part B deductible, and IRMAA thresholds. In the meantime, you can plan around the Part D changes that are already set, and use Annual Enrollment to confirm your coverage still matches your needs.

For official cost figures as they're released, and for personalized details about enrollment and plans in your area, visit Medicare.gov or call 1-800-MEDICARE (1-800-633-4227), TTY 1-877-486-2048, available 24 hours a day, 7 days a week.