Social Security 2027 COLA increase is expected to reach 3.5% after the U.S. Bureau of Labor Statistics releases the September inflation report on Oct. 14. The change would lift monthly checks for more than 71 million traditional beneficiaries.
The September report will supply the final data point needed to calculate the 2027 cost-of-living adjustment. Mary Johnson, an independent Social Security and Medicare policy analyst, is among those expecting checks to rise by 3.5% in 2027.
Oct. 14 inflation report
Social Security beneficiaries get an annual benefit boost that is designed to match inflation, and the program has used the Consumer Price Index for Urban Wage Earners and Clerical Workers as its yardstick since 1975. Prices have risen in all but three years for COLA purposes since then, with no increase in 2010, 2011 or 2016.
The expected 3.5% increase would land after a year in which trailing 12-month inflation reached 4.2% in May, a three-year high. The prevailing inflation rate is still well above the Federal Reserve's long-term 2% target.
Mary Johnson and The Senior Citizens League
The Senior Citizens League and Johnson expect the same forces that boosted last year's Social Security COLA to do so again in 2027. The article says last year's Liberation Day tariffs modestly boosted Social Security's 2026 COLA, and that Trump's tariff and trade policy is affecting consumer prices for a second consecutive year.
In late July 2026, the Trump administration reimposed sweeping global tariffs ranging from 10% to 12.5% on more than 80 countries. The article says those price pressures should carry into the 2027 calculation because the COLA is tied to inflation, not to wages or broader economic growth.
Inflation and monthly checks
Higher monthly Social Security checks help beneficiaries keep pace with prices, but they also add cost to a retirement program already under strain from inflation. The article frames the expected 2027 increase as one of the largest Social Security COLAs in 35 years, which makes the Oct. 14 report the number readers need to watch.
The rough dollar gain depends on the size of the current check, so the practical test is simple: take a monthly benefit and multiply it by 0.035. That gives the increase before the 2027 adjustment takes effect.
For beneficiaries, the next step is waiting for the Oct. 14 inflation data that will lock in the calculation. If the 3.5% estimate holds, the check increase would be meaningful, and the bill for the program would grow with it.
