As of September 7, 2026, 2027 Social Security COLA projections point to a potential increase of about 3.6%, based on the latest estimate from The Senior Citizens League. The estimate is not yet the official Social Security cost-of-living adjustment because the government still needs the complete third-quarter inflation data. The Bureau of Labor Statistics is scheduled to release the August 2026 Consumer Price Index on September 11, followed by the September CPI data in October.
The 2027 COLA will be determined under the Social Security Administration’s statutory formula. That formula uses the Consumer Price Index for Urban Wage Earners and Clerical Workers, commonly called CPI-W. July, August and September CPI-W readings are especially important because they form the third-quarter average used in the calculation.
The latest 2027 COLA projection is 3.6%
The Senior Citizens League currently projects a 3.6% Social Security COLA for 2027. Its August 12 estimate represented a reduction from the group’s previous 3.8% projection.
The change came after the latest inflation data showed some moderation in price growth. The Senior Citizens League said its updated estimate was 0.8 percentage point higher than the 2.8% COLA that took effect for Social Security benefits in 2026.
That 3.6% figure remains a projection, not an official government determination.
The distinction matters because the final COLA depends on inflation readings that were not yet complete as of September 7. August CPI data will be released on September 11, while September CPI data will arrive in October.
Why the 2027 COLA has not been finalized
The Social Security Administration does not simply use the annual inflation rate to determine the COLA.
Instead, federal law establishes a specific calculation based on the average CPI-W during the third quarter. The third quarter consists of July, August and September.
The percentage increase between the current third-quarter average and the applicable comparison quarter determines the COLA. If the result is positive, it is rounded to the nearest one-tenth of 1%.
This means the July inflation figure alone cannot determine the final 2027 increase.
August and September CPI-W results still matter. A significant move in either direction could change the final calculation from current private-sector projections.
What the latest CPI data shows
The most recent available national CPI data covers July 2026.
The Bureau of Labor Statistics reported that the overall Consumer Price Index increased 0.1% in July on a seasonally adjusted basis. Prices were 3.4% higher over the previous 12 months.
The CPI-W also increased 3.4% over the year through July. Its July index stood at 327.104 on a not-seasonally-adjusted basis.
The July data included several notable movements.
Shelter prices increased 0.1% during the month and accounted for roughly two-thirds of the overall monthly CPI increase. Food prices also rose 0.1%.
Energy moved in the opposite direction. The energy index declined 1.5% in July, helping reduce some of the upward pressure on overall consumer inflation.
Those inflation movements help explain why the latest Senior Citizens League estimate moved lower from 3.8% to 3.6%.
August CPI data is the next major update
The next important inflation release arrives September 11.
The Bureau of Labor Statistics has scheduled the August 2026 CPI report for 8:30 a.m. Eastern Time on Friday, September 11.
The August CPI-W figure will become part of the three-month average used for the 2027 Social Security calculation.
This makes the September 11 report especially important for anyone following the latest COLA projections. It will provide another completed month of data and allow analysts to refine their estimates before the final September reading becomes available.
The September CPI report is scheduled for release in October. The Social Security Administration has said that it will announce the next official COLA in October 2026.
The official 2027 COLA will come from the SSA
The Social Security Administration, rather than an advocacy organization or private analyst, will determine the official 2027 COLA.
The agency’s current information confirms that the next COLA announcement will occur in October 2026.
That timing is consistent with the annual process. The 2026 COLA was announced on October 24, 2025.
For 2026, Social Security benefits increased 2.8%. The adjustment was based on the increase in average CPI-W between the third quarter of 2024 and the third quarter of 2025.
The same basic statutory framework will be used for the 2027 determination.
How the 2027 COLA formula works
The calculation is easier to understand when broken into steps.
- The government records CPI-W readings for July, August and September.
- Those three monthly readings are averaged to produce the third-quarter CPI-W average.
- That average is compared with the applicable previous third-quarter average.
- The percentage increase becomes the COLA.
- The result is rounded to the nearest one-tenth of 1%.
The formula means that the final 2027 number cannot be known until the required third-quarter data is available.
It also means that projections can change during September and October.
How the latest estimate compares with the 2026 COLA
The current 3.6% projection is higher than the 2.8% COLA that Social Security beneficiaries received for 2026.
The difference is 0.8 percentage point.
| Social Security COLA | Percentage |
|---|---|
| 2026 official COLA | 2.8% |
| 2027 latest TSCL projection | 3.6% |
| Difference | +0.8 percentage point |
The 2026 adjustment increased Social Security benefits for nearly 71 million beneficiaries beginning in January 2026. The SSA said average retirement benefits increased by about $56 per month with the 2.8% adjustment.
A 3.6% adjustment would therefore represent a larger percentage increase than the current year’s COLA. However, the exact dollar impact would depend on each beneficiary’s existing monthly benefit.
What a 3.6% COLA would mean for monthly benefits
A percentage COLA applies to a beneficiary’s benefit amount. It does not give every Social Security recipient the same dollar increase.
For example, a person receiving $1,500 per month would receive an additional $54 if a 3.6% COLA became the final adjustment.
Someone receiving $2,000 per month would receive an additional $72.
A $2,500 monthly benefit would rise by $90.
These examples illustrate the mathematics of a 3.6% increase. They are not predictions of what individual beneficiaries will receive because actual benefits differ substantially.
The Senior Citizens League has also used average Social Security benefit figures to illustrate the potential effect of its projection. Its latest projection estimated that average benefits could rise by roughly $69.75 based on the average benefit figure it used.
Another official projection is lower
There is also an important distinction between the latest short-term estimate and the federal government’s long-range projections.
The 2026 Social Security Trustees Report includes an estimated 2.4% COLA for calendar year 2027 under its intermediate assumptions. That figure is part of the Trustees Report’s long-range economic projections. It is not the final 2027 COLA determination.
This explains why different 2027 COLA projections can show different numbers.
The Trustees Report uses economic assumptions for long-range program projections. The Senior Citizens League updates its estimate using newer inflation information as it becomes available.
For consumers following the actual 2027 benefit increase, the statutory CPI-W calculation and the eventual SSA announcement are the decisive figures.
Why the July number does not settle the COLA
It can be tempting to look at the latest annual CPI-W inflation rate and treat it as the expected Social Security increase.
That approach does not follow the actual COLA formula.
The July CPI-W rose 3.4% over the year, but the Social Security adjustment does not simply equal July’s 12-month inflation rate. Instead, the government calculates a third-quarter average and compares it with the appropriate prior-year third-quarter average.
As a result, the August and September readings remain essential.
A higher or lower third-quarter average could move the final COLA away from current estimates.
When the 2027 COLA will become official
The Social Security Administration expects to announce the next COLA in October 2026.
The agency’s COLA information page confirms that the next adjustment will be announced in October.
Before that announcement, the government needs the September CPI-W data.
The Bureau of Labor Statistics has scheduled the September 2026 CPI release for October 14, 2026.
That release will provide the final monthly inflation data needed for the third-quarter calculation.
The official percentage will then replace all current projections.
2027 Social Security COLA projections remain subject to change
The latest 3.6% estimate provides a useful snapshot of where the 2027 COLA discussion stands as of September 7, 2026.
It is higher than the 2.8% adjustment for 2026, but it is not yet guaranteed.
The remaining CPI-W readings are critical. August data is scheduled for September 11, and September data is scheduled for October 14.
Until those figures are available and the Social Security Administration completes its statutory calculation, any specific percentage should be described as a projection rather than the final COLA.
For now, the Senior Citizens League’s 3.6% estimate is the latest widely reported projection based on current inflation data, while the 2026 Trustees Report carries a separate 2.4% long-range estimate under its intermediate assumptions.
The official number will come from the Social Security Administration in October.
Stay tuned as the August and September inflation figures bring the 2027 Social Security COLA closer to its final official number.