Social Security recipients could receive a 2027 cost-of-living adjustment (COLA) between 3.6% and 3.8%, based on forecasts released this summer as inflation continues to moderate. The Senior Citizens League currently projects a 3.8% increase, while AARP estimates a 3.6% adjustment.
Either outcome would be higher than the 2.8% COLA that took effect in January 2026. However, the final percentage has not been determined, and the remaining inflation data could still change the estimate.
The latest forecasts are also lower than some earlier expectations. In May 2026, preliminary projections for the 2027 COLA were as high as 3.9% to 4.2%. More recent inflation data led analysts to reduce those estimates.
For the average retiree, a COLA between 3.6% and 3.8% could mean roughly $74 to $79 more per month, depending on the size of the current benefit. The final increase will be announced by the Social Security Administration in October.
Calculation
The Social Security COLA is based on the Consumer Price Index for Urban Wage Earners and Clerical Workers, commonly known as CPI-W.
The Bureau of Labor Statistics tracks CPI-W throughout the year, but only the readings from July, August and September are used in the annual COLA calculation.
The Social Security Administration averages the CPI-W readings for those three months and compares the result with the average from the third quarter of the previous year. The percentage increase becomes the COLA for the following year.
Because September’s inflation data has not yet been included, the 2027 adjustment remains an estimate.
If the final COLA is 3.6%, a beneficiary receiving $2,000 per month would see an increase of $72. At 3.8%, the same benefit would increase by $76.
| Current Benefit | 3.6% Increase | 3.8% Increase |
|---|---|---|
| $1,500 | $54.00 | $57.00 |
| $2,000 | $72.00 | $76.00 |
| $2,500 | $90.00 | $95.00 |
| $3,000 | $108.00 | $114.00 |
These figures show the potential increase before accounting for Medicare premiums, taxes or other deductions.
Timing
The 2027 COLA will not become official until the Social Security Administration has the necessary third-quarter inflation data.
The agency is expected to announce the final adjustment in October 2026. The new COLA will then take effect with Social Security payments beginning in January 2027.
This timing is important because the forecast can change even when estimates appear relatively stable. A stronger or weaker inflation reading in August or September could shift the final percentage.
The recent history of COLA adjustments provides some context. Social Security benefits increased by 2.5% in 2025 and 2.8% in 2026. The 2024 adjustment was 3.2%.
A 3.6% to 3.8% increase in 2027 would therefore be larger than the adjustments of the previous two years.
Forecasts
Several analysts and organizations are tracking the potential 2027 COLA as new inflation figures become available.
The Senior Citizens League has projected a 3.8% adjustment, while AARP’s estimate stands at 3.6%. Mary Johnson, an independent Social Security and Medicare analyst, has projected a 3.7% COLA.
The differences are relatively small, but they demonstrate why current forecasts should not be treated as final.
Forecasting the COLA months before the official announcement is similar to estimating where a moving target will land. Analysts can use available inflation data to make informed calculations, but the final result depends on data that has not yet been released.
Earlier in 2026, some projections were considerably higher. As inflation cooled, those estimates were revised downward.
History
Recent COLA adjustments have varied considerably depending on inflation.
The 2024 COLA was 3.2%, followed by a 2.5% increase in 2025 and a 2.8% adjustment in 2026.
According to the Social Security Administration, annual COLAs averaged about 3.02% between 1984 and 2006. A projected 3.6% to 3.8% adjustment for 2027 would therefore be above that particular historical average.
However, comparing COLAs across different periods does not necessarily show how much purchasing power retirees gain. Household expenses change over time, and individual beneficiaries can face very different costs for housing, food, healthcare and other necessities.
Impact
For Social Security recipients, the percentage increase is only part of the calculation. The actual dollar amount added to a monthly check depends on the current benefit.
For example, a person receiving $1,500 per month would receive an additional $54 with a 3.6% COLA or $57 with a 3.8% adjustment. Someone receiving $3,000 would see an increase of $108 or $114, respectively.
Medicare premiums can also affect how much of the COLA remains available for other expenses. Beneficiaries who have premiums deducted from their Social Security payments may see their net increase differ from the headline COLA percentage.
The 2027 Social Security COLA remains a forecast for now. With estimates currently ranging from 3.6% to 3.8%, beneficiaries can get a general idea of what their payments may look like, but the final number will depend on the remaining inflation data. The Social Security Administration’s October announcement will provide the official figure used for January 2027 payments.
FAQs
What is the 2027 COLA forecast?
Current forecasts range from 3.6% to 3.8%.
When will the 2027 COLA be announced?
The SSA is expected to announce it in October 2026.
When does the 2027 COLA start?
The increase is expected to begin with January 2027 payments.
How is Social Security COLA calculated?
It is based on third-quarter CPI-W inflation data.
