Social Security beneficiaries could receive a larger cost-of-living adjustment in 2027, with the latest estimate from The Senior Citizens League putting the increase at 3.6%. If that forecast becomes the final figure, the adjustment would be higher than the 2.8% increase beneficiaries received in 2026.
For retirees living largely on Social Security, even a modest percentage change can affect monthly household income. Based on an average monthly benefit of about $1,938, a 3.6% increase would add roughly $70 per month, bringing the benefit to approximately $2,008.
The estimate is not yet official. The final 2027 COLA will depend on inflation data released later in 2026 and the calculation used by the Social Security Administration.
Forecast
The Senior Citizens League’s August 2026 projection estimates a 3.6% Social Security COLA for 2027. That would represent an increase of 0.8 percentage points compared with the 2.8% adjustment for 2026.
The projected increase would also be above the 3.2% COLA announced for 2024 and the 2.5% adjustment for 2025.
For an individual beneficiary, however, the dollar increase will depend on the size of the person’s current Social Security payment. Someone receiving more than the average benefit would generally see a larger dollar increase, while someone receiving less would see a smaller one.
Calculation
The Social Security Administration determines the annual COLA using the Consumer Price Index for Urban Wage Earners and Clerical Workers, known as CPI-W.
The calculation uses inflation readings from July, August, and September. Those three monthly figures are averaged and compared with the corresponding period from the previous year. The resulting percentage is used to determine the following year’s Social Security adjustment.
Beneficiaries can review the Social Security Administration’s official COLA information for details about how the adjustment is calculated and how previous increases have been determined.
This means an early forecast is not the same as the final COLA. Inflation data released during the remaining months of 2026 can still change the estimate.
Inflation
Inflation has remained higher in recent years than it was during much of the 2010s. From 2010 through 2019, CPI-W averaged approximately 1.4% annually. From 2020 through 2025, the average was about 3.7%.
That longer period of elevated inflation has affected household budgets, particularly for people who rely on fixed or relatively predictable sources of income.
The 2027 COLA is intended to adjust Social Security benefits in response to changes in consumer prices. It does not necessarily match the spending patterns of every retiree. Expenses for housing, healthcare, food, transportation, and other necessities can vary substantially from one household to another.
The Bureau of Labor Statistics’ Consumer Price Index data provides the underlying inflation information used in the broader calculation.
History
A 3.6% COLA would be higher than the adjustments seen in 2024, 2025, and 2026.
The 2024 increase was 3.2%, followed by 2.5% in 2025 and 2.8% in 2026. The largest recent increase occurred in 2023, when Social Security benefits rose by 8.7% following the significant inflation experienced after the pandemic.
The 3.6% projection is therefore not unusually high by the standards of the 2022-2023 inflation period. It would, however, represent a relatively substantial increase compared with the most recent adjustments.
Looking at the history helps put the current forecast into perspective. COLAs can vary considerably from one year to the next because they respond to changes in consumer prices.
Volatility
Inflation readings during 2026 have moved up and down. The Senior Citizens League reported that CPI-W began the year at 2.2%, increased to 4.4% in May, and then declined to 3.5% in June.
Such changes make the final COLA difficult to predict several months before the official calculation is complete.
The Senior Citizens League uses a statistical model to estimate where the COLA may ultimately land. Other analysts and organizations may produce different estimates depending on the inflation data available and the assumptions used in their calculations.
For beneficiaries, the important point is that the 3.6% figure remains a forecast. It can change before the Social Security Administration announces the final adjustment.
Announcement
The final 2027 COLA is expected to be announced in October 2026 after the September inflation data is available. The Social Security Administration will then use the applicable CPI-W figures to determine the official adjustment.
Beneficiaries can monitor the official Social Security Administration website for the announcement and other changes affecting Social Security payments.
Until the official number is released, retirees should avoid treating the 3.6% estimate as a guaranteed increase. Forecasts are useful for planning, but the final figure depends on the required inflation data.
Changes
The COLA is only one of several Social Security figures that can change in 2027. Earnings limits and other benefit-related amounts are also subject to annual adjustments.
Retirement age is another consideration for people planning when to claim benefits. Under the existing schedule, the full retirement age reaches 67 for people born in 1960 or later.
These changes can affect workers and future retirees differently from the annual COLA received by current beneficiaries. Anyone making a retirement or claiming decision should therefore consider their individual earnings record, benefit estimate, taxes, Medicare costs, and other sources of income.
A 3.6% COLA would provide a meaningful increase in monthly Social Security income for many beneficiaries if the forecast becomes the final figure. For someone receiving about $1,938 per month, the estimated increase would be around $70. But the amount is still subject to change, and the official COLA will not be known until the Social Security Administration completes its calculation using the relevant 2026 inflation data.
