Millions of Social Security recipients are getting closer to learning exactly how much their monthly benefits will increase in 2027.
The latest estimate from The Senior Citizens League projects a 3.5 percent cost of living adjustment, known as COLA, for 2027. That would be higher than the 2.8 percent adjustment beneficiaries received for 2026.
Other recent estimates have placed the potential increase around 3.5 to 3.6 percent, meaning beneficiaries are currently on course for their largest annual Social Security adjustment in four years.
The final number, however, has not yet been determined.
When will the 2027 Social Security COLA be announced?
The date millions of Americans need to watch is October 14, 2026.
That is when September inflation data is scheduled to be released and the Social Security Administration is expected to announce the official 2027 COLA.
September's inflation figure is the final piece of information needed for the calculation.
Social Security COLA increases are based on the Consumer Price Index for Urban Wage Earners and Clerical Workers, commonly known as the CPI W.
The calculation compares the average CPI W during July, August and September with the corresponding three month period from the previous year.
July and August data are already available. September will determine the final result.
How much could Social Security checks increase?
A 3.5 percent COLA could produce a noticeable increase for retirees.
The average monthly Social Security benefit for retired workers stood at approximately $2,087.52 in August 2026.
Applying a 3.5 percent increase to that amount would add roughly $73 per month, bringing the average benefit to approximately $2,160.
For someone currently receiving $2,000 per month, the calculation is straightforward.
A 3.5 percent increase would add approximately $70 per month, raising the benefit to about $2,070 before any applicable deductions.
Someone receiving $1,500 would gain approximately $52.50 per month.
A person receiving $2,500 would see an increase of approximately $87.50.
Individual payments will vary because Social Security benefits depend on each recipient's earnings history, claiming age and other factors.
Why the projection has changed
Estimates for the 2027 COLA have moved considerably during the year as inflation data changed.
The Senior Citizens League projected a 3.9 percent increase in May.
By July, its estimate had fallen to 3.8 percent. In August, the projection dropped again to 3.6 percent.
Following the latest available inflation data, the organization lowered its final forecast to 3.5 percent in September.
That does not mean the official increase will necessarily be 3.5 percent.
September's CPI W reading could still push the final calculation slightly higher or lower.
Why a bigger COLA is not necessarily good news
A larger Social Security adjustment may sound entirely positive, but COLA increases happen because consumer prices have risen.
In other words, beneficiaries receive more money because inflation has reduced purchasing power.
The Senior Citizens League says many older Americans continue to struggle with rising costs for essentials including housing, groceries, utilities and health care.
Its 2026 Senior Survey found that 44 percent of surveyed seniors said they receive all of their income from Social Security.
The organization also reported that 89 percent believed the 2026 COLA was too low and worried their benefits would fall behind inflation.
That makes the upcoming adjustment particularly important for households that depend heavily on monthly Social Security payments.
Medicare could reduce part of the increase
Another factor retirees need to consider is Medicare.
Many Social Security recipients have their Medicare Part B premiums deducted directly from their monthly benefit payments.
As a result, an increase in Medicare premiums can reduce the amount of a COLA increase that beneficiaries actually see in their bank accounts.
Current projections indicate higher Medicare costs for 2027, meaning some retirees could receive a smaller net increase than the headline COLA percentage initially suggests.
The exact impact will depend on an individual's Social Security benefit and Medicare situation.
When will the higher payments begin?
Once the Social Security Administration announces the final COLA, beneficiaries will not receive the increase immediately.
The adjustment will apply to Social Security benefits beginning in January 2027.
Supplemental Security Income recipients typically see their adjusted payments according to the payment calendar surrounding the start of the new year.
Beneficiaries should eventually receive information from the Social Security Administration showing their individual 2027 benefit amount.
October 14 is the key date
Until September's inflation data arrives, all current figures remain projections.
The latest major estimate points to 3.5 percent, while some forecasts remain slightly higher.
What is already clear is that the adjustment is currently expected to exceed the 2.8 percent COLA applied in 2026.
For tens of millions of Americans receiving Social Security benefits, October 14 will provide the answer.
That is when the final inflation figure is expected to turn today's Social Security COLA projections into the official 2027 benefit increase.
