Update, October 14, 2026: The Social Security Administration has now announced the official 2027 cost-of-living adjustment: 3.6%. Monthly Social Security and SSI payments for about 76 million Americans will rise by that amount starting in January 2027, up from 2.8% for 2026. CBS News reports the average retired-worker payment will rise by roughly $75 to about $2,170 a month; your own increase depends on your current benefit. Medicare has not yet announced its 2027 Part B premium, which is deducted from most checks. The forecasts and calculations below were written before the announcement and are kept for context. See the SSA announcement for the official details, and our guide to the Social Security earnings limit for the new 2027 work-income thresholds ($25,560 and $67,920) if you plan to keep working while collecting benefits.
The 2027 Social Security COLA estimate has been shrinking for three straight months. In June 2026, The Senior Citizens League projected 3.8%. By July that had slipped to 3.6%. By August, based on the latest available Consumer Price Index data, the leading independent estimates had settled into a narrower band of roughly 3.2% to 3.6% — nowhere near the “approaching 4%” figures that circulated earlier in the year. The official number won’t be locked in until the Social Security Administration’s announcement on October 14, 2026, but here’s what the most current data actually shows, and what it would mean for your check.
Key Takeaways
- As of mid-September 2026, independent COLA forecasts range from 3.2% (Committee for a Responsible Federal Budget) to 3.6% (AARP), with The Senior Citizens League at 3.5% and independent analyst Mary Johnson at 3.4%.
- Every forecast has come down since June 2026, when early projections ran as high as 3.8%, because monthly inflation readings have cooled since spring.
- The Social Security Administration will announce the official 2027 COLA on October 14, 2026, once September’s Consumer Price Index data is released. Nothing is final before then. If you are also drawing from retirement accounts, see how required minimum distributions can affect your retirement income.
- A COLA in the 3.2%–3.6% range would raise the average retired worker’s monthly benefit by roughly $66 to $75, from $2,071 to somewhere between $2,137 and $2,146.
- Rising Medicare Part B premiums are deducted directly from Social Security checks, so the increase that actually reaches a beneficiary’s bank account is smaller than the headline percentage suggests.
The Latest Estimate: Where Things Stand in Mid-September 2026
The most recent data point comes from the Bureau of Labor Statistics’ August 2026 inflation report, published in mid-September, which put the CPI-W index — the specific inflation measure Social Security uses — at 328.481. Based on that reading, independent trackers put the unofficial 2027 COLA at roughly 3.5%, though this is still an estimate: the calculation isn’t complete until September’s CPI-W figure is added to July’s and August’s.
Several organizations publish their own running estimates using slightly different assumptions, which is why the numbers don’t all match:
- AARP: 3.6%, based on July’s inflation data.
- The Senior Citizens League (TSCL): 3.5%, its August estimate.
- Mary Johnson, an independent Social Security and Medicare policy analyst: 3.4%.
- The Committee for a Responsible Federal Budget (CRFB): 3.2%, the most conservative of the widely cited estimates.
The spread between 3.2% and 3.6% might look small, but on an average benefit it’s the difference between roughly a $66 and a $75 monthly increase — enough to matter for a household budgeting closely around a fixed income.
How the Estimate Has Shifted Since Spring
Early 2026 forecasts, built on thinner data, ran noticeably hotter than where the number has actually landed. TSCL’s own monthly tracking shows the trend clearly:
| Month (2026) | TSCL’s 2027 COLA Estimate |
|---|---|
| June | 3.8% |
| July | 3.6% |
| August | 3.5% |
That downward drift reflects cooling inflation over the summer, not a change in methodology. It’s also a reminder that any COLA estimate published before the October announcement is exactly that — an estimate, subject to revision as new inflation data arrives.
How the COLA Is Actually Calculated
Social Security’s annual adjustment isn’t a policy decision — it’s a formula. The Social Security Administration compares the average Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W) across the third quarter (July, August, and September) of the current year to the same three months of the prior year. The percentage difference, rounded to the nearest tenth of a point, becomes the following January’s COLA.
Because the formula needs all three months of data, nothing is official until the Bureau of Labor Statistics publishes the September CPI-W report. That report is scheduled for release on October 14, 2026, alongside the Social Security Administration’s formal COLA announcement. Every figure before that date — including every number in this article — is an informed projection, not a confirmed benefit increase.
What This Would Actually Mean in Dollars
For context, the 2026 COLA came in at 2.8%, raising the average retired worker’s monthly benefit from $2,015 to $2,071 — an increase of about $56. Applying the range of current 2027 estimates to that same $2,071 baseline:
| 2027 COLA Scenario | Monthly Increase | New Average Benefit |
|---|---|---|
| 3.2% (CRFB estimate) | ≈ $66 | ≈ $2,137 |
| 3.4% (Mary Johnson estimate) | ≈ $70 | ≈ $2,141 |
| 3.5% (TSCL estimate) | ≈ $72 | ≈ $2,143 |
| 3.6% (AARP estimate) | ≈ $75 | ≈ $2,146 |
These figures apply to the average retired worker only; an individual’s actual increase depends on their own current benefit amount, since the COLA is applied as a percentage, not a flat dollar figure.
Why the Numbers Keep Moving: Energy Prices
The single biggest swing factor in this year’s CPI-W readings has been energy. Gas prices were running roughly 28% higher year-over-year as of the August data — a much larger move than food, housing, or medical care costs — and because the CPI-W formula weights gasoline heavily, volatile pump prices can shift the COLA estimate from one month to the next more than any other category. That’s part of why the estimate has moved three months in a row: it isn’t that the underlying economy is unstable, it’s that one volatile input carries outsized weight in the formula.
The Catch: Medicare Premiums Come Out First
A bigger COLA percentage doesn’t automatically mean a bigger deposit. Medicare Part B premiums are deducted directly from most retirees’ Social Security checks before the money ever reaches their bank account, so any increase in the standard Part B premium eats into the COLA before a beneficiary sees it. The same dynamic applies on the prescription-drug side: Medicare’s 2027 Part D deductible is rising from $615 to $700, and the annual out-of-pocket cap is climbing from $2,100 to $2,400, changes that take effect the same January the new COLA does. Retirees choosing a Part D or Medicare Advantage plan during Open Enrollment (October 15–December 7, 2026) are effectively making two interconnected financial decisions at once, not one.
This is also why year-over-year comparisons of “how much more money retirees are getting” can be misleading if they only cite the COLA percentage. The number worth tracking is the net change after Medicare premiums, not the headline adjustment alone.
Smart Moves While You Wait for the Official Number
With five weeks left until the October 14 announcement, there’s a limit to how much planning makes sense around an unconfirmed figure. A few things are worth doing now regardless of where the final COLA lands:
Don’t let idle cash sit at near-zero interest
As of mid-September 2026, top-tier high-yield savings accounts are still paying up to roughly 4.2%–4.5% APY, according to rate-tracking from Bankrate and NerdWallet — far above the sub-0.5% national average for traditional savings accounts. That gap matters most for money set aside as an emergency fund or short-term reserve, since it earns meaningfully more without added risk or lock-up. These rates move with Federal Reserve policy, though, so they aren’t guaranteed to stay this high indefinitely.
Check whether your benefits are taxable
Up to 85% of Social Security benefits can be subject to federal income tax depending on a retiree’s total “combined income” from other sources. A COLA increase, however modest, can push some beneficiaries’ income across one of the thresholds that determines how much of their benefit is taxed — worth a quick check with a tax preparer before year-end rather than a surprise at filing time.
Review both Social Security and Medicare changes together
Because Medicare’s Open Enrollment window (October 15–December 7) overlaps almost exactly with the COLA announcement (October 14), this fall is the one time of year when it makes sense to look at retirement income and health coverage costs side by side rather than separately.
For a broader look at other Social Security changes in motion this year, see: What Changes Are Coming to Social Security? and The Social Security Fairness Act: What It Means for Your Retirement. For the mechanics of how and when payments actually arrive, see Your Guide to Social Security Payments: Schedule, Amounts, and the Switch to Digital.
FAQ
What is the 2027 Social Security COLA estimate right now?
As of mid-September 2026, independent forecasts range from 3.2% to 3.6%, with most estimates clustered around 3.4%–3.6%. The figure is not official until the Social Security Administration’s announcement on October 14, 2026.
When will the official 2027 COLA be announced?
October 14, 2026, immediately after the Bureau of Labor Statistics releases the September Consumer Price Index report, which completes the third-quarter data the COLA formula requires.
How much more money will retirees actually get?
Based on current estimates, the average retired worker’s monthly benefit — $2,071 as of 2026 — would rise by roughly $66 to $75, landing somewhere between about $2,137 and $2,146. Individual amounts vary since the COLA is a percentage of each person’s own benefit.
Why do different organizations publish different COLA estimates?
They use the same CPI-W methodology but calculate from different months of available data and sometimes different rounding or projection assumptions for the months not yet reported, which produces a range rather than a single number until the calculation is finalized in October.
Will a higher COLA mean a bigger deposit in my bank account?
Not necessarily by the full percentage. Medicare Part B premiums are deducted from most beneficiaries’ checks before the money is paid out, so any Part B premium increase reduces the net change a retiree actually sees.
The Bottom Line
The 2027 Social Security COLA is very likely landing somewhere in the mid-3% range — meaningfully lower than the near-4% chatter from earlier this year, but still one of the larger adjustments of the past several years outside of 2023’s inflation spike. The real number arrives October 14, 2026. Until then, the more useful move isn’t guessing at the exact percentage — it’s making sure idle cash is earning a reasonable rate, checking whether a bigger check changes your tax picture, and reviewing Medicare coverage during Open Enrollment at the same time, since the two changes land in the same month.
