2027 Social Security COLA Estimate Rises Again as Final Number Draws Near
After months of wild swings, the 2027 Social Security COLA forecast has finally narrowed to a tight range, but one more inflation report stands between retirees and the official number, and it could still move the final figure in either…
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If there is one Social Security number retirees watch closely every fall, it is the cost-of-living adjustment, or COLA. The annual adjustment determines how much benefits will increase the following year, and even a few tenths of a percentage point can make a noticeable difference over 12 monthly checks.
Social Security benefits received a 2.8% COLA for 2026. According to the Social Security Administration, that raised the estimated average retired worker benefit from about $2,015 per month before the adjustment to roughly $2,071 in January 2026.
Now attention has shifted to 2027. Inflation surged earlier in 2026 and briefly pushed some COLA forecasts well above 4%. Those projections have come down substantially, but the latest inflation report also stopped the steady slide. With two of the three months used in the official calculation now complete, current forecasts are clustering around 3.5% to 3.6%.
The Latest 2027 COLA Estimates Are Between 3.5% and 3.6%
The 2027 Social Security COLA is beginning to come into focus. After the August inflation report was released on September 11, The Senior Citizens League lowered its forecast from 3.6% to 3.5%. Independent Social Security and Medicare analyst Mary Johnson also estimates a 3.5% adjustment, up slightly from the 3.4% she projected after July’s inflation report.
AARP is slightly more optimistic. Its September 11 forecast puts the 2027 COLA at 3.6%, up from its previous estimate of 3.5%.
That leaves the major forecasts in a very tight range. If either 3.5% or 3.6% proves accurate, the 2027 increase would top the 2.8% COLA for 2026, the 2.5% increase for 2025, and the 3.2% increase for 2024. It would be the largest Social Security COLA since the 8.7% adjustment that took effect in 2023.
Why the Forecast Has Changed So Much
The path to the current estimate has been anything but smooth. In June, Mary Johnson estimated that the 2027 COLA could reach 4.7% after inflation accelerated sharply in May. When inflation cooled in June, her estimate fell to 3.7%. After July’s report, it dropped again to 3.4%.
August changed the direction slightly. The Bureau of Labor Statistics reported that the CPI-W, the inflation index actually used to calculate Social Security COLAs, was 3.5% higher than a year earlier in August. The broader CPI-U rose 3.4% over the same period.
That pushed Johnson’s estimate back up to 3.5%, while TSCL’s model moved in the other direction and came down from 3.6% to 3.5%. AARP raised its estimate to 3.6%. Different forecasting methods can produce slightly different answers before all three months of third-quarter inflation data are available.
September Inflation Will Determine the Official Number
Social Security does not simply use the latest 12-month inflation rate to set the COLA. The calculation compares the average CPI-W for July, August, and September of the current year with the average from the same three months in the previous year.
That means two of the three numbers needed for the 2027 calculation are now available. The CPI-W was up 3.4% from a year earlier in July and 3.5% in August. September is the final piece.
The Bureau of Labor Statistics is scheduled to release September’s Consumer Price Index data at 8:30 a.m. Eastern on October 14, 2026. The official Social Security COLA is expected to be announced after that report is released.
So while 3.5% to 3.6% looks increasingly plausible, it is still a forecast. A meaningful change in September prices could move the final figure in either direction.
What a 3.5% to 3.6% COLA Could Mean in Dollars
The percentage gets most of the attention, but the dollar amount is what matters to retirees trying to build a budget.
According to the Social Security Administration’s July 2026 statistics, the average retired worker was receiving $2,085.98 per month. A 3.5% increase on an amount that size would add roughly $73 per month. A 3.6% increase would add about $75.
That would put an average benefit around $2,159 to $2,161 per month before taking into account deductions such as Medicare premiums. Someone receiving a smaller or larger benefit would see a correspondingly smaller or larger dollar increase.
And that is worth remembering: a COLA is not really a raise in the traditional sense. It is designed to help benefits keep pace with inflation. A larger COLA usually means prices have also been rising faster.
Medicare Part B Could Take Back Part of the Increase
For many retirees, the gross Social Security increase is not the same as the increase they will actually see deposited into their bank account. Medicare Part B premiums are generally deducted directly from Social Security benefits.
The standard Part B premium increased from $185 per month in 2025 to $202.90 in 2026. For 2027, the 2026 Medicare Trustees Report currently estimates a standard monthly premium of $209.50.
That would be an increase of $6.60 per month, much smaller than the $17.90 jump beneficiaries absorbed going into 2026. The $209.50 figure is still only a projection, however. The final 2027 Part B premium has not yet been set.
If the average retired worker received roughly $73 to $75 more per month from the COLA and the standard Part B premium rose by $6.60, most of that COLA increase would still remain. But beneficiaries with higher Medicare premiums or other deductions could see a different net result.
Working While Collecting Social Security Is Allowed, but There Is a Catch
Retirees who need more breathing room can work while receiving Social Security. There is no rule requiring someone to stop working simply because they have begun collecting retirement benefits.
However, beneficiaries who have not yet reached full retirement age need to pay attention to Social Security’s retirement earnings test. In 2026, someone below full retirement age can earn up to $24,480 before benefits begin to be temporarily withheld. Above that amount, Social Security generally withholds $1 in benefits for every $2 of earnings over the limit.
A higher limit applies during the calendar year in which a beneficiary reaches full retirement age. In 2026, that limit is $65,160, and Social Security generally withholds $1 for every $3 earned above it before the month full retirement age is reached.
Once someone reaches full retirement age, the earnings test goes away and employment income no longer causes Social Security retirement benefits to be withheld. Benefits previously withheld under the earnings test are also accounted for when Social Security recalculates the benefit after full retirement age.
How to Plan Before the Final COLA Arrives
With only one month of inflation data left, retirees now have a much better idea of where the 2027 COLA could land. That does not mean it makes sense to build a budget around 3.5% or 3.6% as though either number were guaranteed.
A safer approach is to run the numbers using a slightly more conservative increase and treat anything above that as additional breathing room. Start with your current Social Security benefit, estimate your likely Medicare deduction, and then add other retirement income such as pensions, IRA or 401(k) withdrawals, dividends, or wages.
If the budget still looks tight, that is useful information to have before January. It gives you time to adjust discretionary spending, rethink withdrawals, or determine whether part-time work makes sense rather than waiting for the first 2027 check to find out whether the numbers work.
The big date now is October 14. Until September’s CPI-W arrives, every 2027 COLA number is still an estimate. But with July and August already in the books, the picture is considerably clearer than it was earlier this summer.
Editor’s note: This article has been updated through the August 2026 Consumer Price Index report released September 11. The latest forecasts put the 2027 Social Security COLA at 3.5% from independent analyst Mary Johnson and The Senior Citizens League and 3.6% from AARP. The Medicare section reflects the 2026 Medicare Trustees Report’s current estimate of a $209.50 standard Part B premium for 2027. September CPI data, the final inflation reading needed to calculate the official COLA, is scheduled for release on October 14, 2026.
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