Social Security recipients could receive a 3.8% cost-of-living adjustment in 2027, according to the latest estimate from The Senior Citizens League. However, the government will not set the final increase until it receives three crucial inflation reports this fall.
The current projection stands one percentage point above the 2.8% adjustment that beneficiaries received in 2026. Still, it remains an estimate rather than an official benefit increase. Energy prices, housing costs and other inflation drivers could move the figure before the calculation closes in September.
A 3.8% adjustment would add about $79 to the average retired worker’s monthly benefit. Social Security data show that retired workers received an average of $2,084.40 in June. Applying the projected increase would lift that amount to about $2,163.61 before Medicare premiums or other deductions.
For someone receiving $1,500 a month, the same increase would add $57, raising the payment to $1,557. A $2,000 benefit would grow by $76, while a $2,500 check would rise by $95.
Three Inflation Reports Will Decide the Increase
The Social Security Administration calculates its annual adjustment using the Consumer Price Index for Urban Wage Earners and Clerical Workers, known as the CPI-W. It compares the average index reading from July through September with the average from the same three months a year earlier. The agency then rounds the percentage change to the nearest tenth of a point.
That means none of the inflation readings that will determine the 2027 increase had been released as of Aug. 2. The Bureau of Labor Statistics will publish July data on Aug. 12, followed by the August report on Sept. 11 and the September figures on Oct. 14.
The September release will provide the final piece of the calculation. Any approved adjustment would take effect with December 2026 Social Security benefits, which recipients generally receive in January 2027. Supplemental Security Income payments would also reflect the change.
Meanwhile, Medicare costs will affect how much of the increase some retirees keep. The standard Medicare Part B premium stands at $202.90 a month in 2026, and the government has not finalized the 2027 amount. Because many beneficiaries pay the premium through deductions from their Social Security checks, a higher charge could absorb part of the COLA.
The 3.8% forecast offers an early guide for household planning, but beneficiaries should avoid treating it as a confirmed increase. The July, August and September CPI-W readings will determine whether next year’s Social Security adjustment moves higher, falls below the current estimate or finishes close to it.
