The Social Security Administration will likely raise benefits by 3.8% for the 2027 COLA, based on forecasts from The Senior Citizens League and analyst Mary Johnson. The social security COLA 2027 estimate marks the sixth straight year of above average raises to social security benefits, a streak the program has not matched since 1988 through 1997, even as Medicare Part B premiums keep climbing alongside it.
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Social Security COLA: 2027 Forecast And Medicare Impact
How The Social Security Administration Calculates The Raise
The Social Security Administration ties every COLA to the Consumer Price Index for Urban Wage Earners and Clerical Workers, or CPI-W. The agency compares third quarter data with the same period a year earlier, and the difference sets the raise for social security benefits the following January. Tariff driven inflation and the shutdown of the Strait of Hormuz after the conflict with Iran pushed this year’s 2027 COLA estimate higher, since fuel costs feed directly into CPI-W. Trailing inflation hit a three year high in May, then cooled slightly after the June report.
Mary Johnson said:
“This is a significant drop in inflation, and one that we’ve rarely seen in the June CPI data over the past five years.”
Johnson lowered her own number from 4.7% down to 3.7% once that June data came in, while The Senior Citizens League has held its projection steady at 3.8% for a second straight month. At 3.8%, TSCL projects the average retired worker benefit would climb by about 77 dollars a month.
How Medicare Premiums Could Offset The Raise
The Social Security Administration’s rules require Medicare Part B premiums to come out directly from monthly checks, so part of any raise never reaches a retiree’s bank account. The latest Medicare Trustees Report puts the standard Part B premium at 209.50 dollars a month in 2027, a 3.25% increase. Between 2024 and 2026, Part B premium hikes of 5.9%, 5.9% and 9.7% outpaced COLAs of 3.2%, 2.5% and 2.8%, and that gap left the buying power of Social Security income about 20% lower than it stood in 2010. If the social security COLA 2027 figure lands at 3.7% or 3.8%, social security benefits would outgrow Medicare Part B premiums for the first time in years.
Why Analysts Are Split On The Final Number
Not everyone agrees the 2027 COLA will land near 3.8%. David Enna of Tipswatch, who has forecast the adjustment every year since 2017, puts his own estimate at 3.6%, matching a separate projection from AARP. Enna notes that July through September, the exact months the formula uses, often swing unpredictably, with a deflationary month showing up in six of the past twelve years. CNBC published its own forecast widely after the June report, and it sits in the same 3.7% to 3.8% window as TSCL and Johnson.
The Social Security Administration explains its own reasoning plainly on its website:
“The purpose of the COLA is to ensure that the purchasing power of Social Security and Supplemental Security Income benefits is not eroded by inflation.”
The Social Security Administration will not lock in the final number until it finishes compiling CPI-W data for the third quarter of 2026 in October. Until then, the 3.6% to 3.8% range gives the more than 71 million people who receive social security benefits a rough idea of what to expect when the next social security COLA 2027 announcement arrives, along with whatever new Medicare Part B premiums the agency sets for the year ahead.