Social Security raise confirmed at 3.6% for 2027: the September CPI-W reading that set it

The Social Security Administration announced on Wednesday that benefits will rise 3.6% in January 2027, CNBC reported. The agency said the average retirement benefit goes up by about $75 a month and that roughly 72 million Social Security recipients will see the increase. About 7.3 million SSI beneficiaries get higher payments starting December 31. This year's adjustment was 2.8%, and 3.6% is the largest since the 8.7% raise for 2023.

The number behind the number

The adjustment is the change in the average CPI-W (the index for urban wage earners and clerical workers) for July, August and September against the same three months a year earlier. We pulled the series from the Bureau of Labor Statistics, not seasonally adjusted:

328.746 divided by 317.265 is 1.0362, a 3.6% rise after rounding, which matches the announced figure. In our September tracker we calculated that September's reading would need to clear 330.00 to reach 3.6%. It came in at 330.654, a jump of about 0.66% from August, driven by the gasoline surge in the September CPI report.

What is left after Medicare

CNBC noted that the standard Medicare Part B premium is projected at $209.50 in 2027, up from $202.90 this year, according to the Medicare trustees' report. That is $6.60 a month, and for most beneficiaries it is deducted straight from the Social Security check. Against the $75 average increase, the take-home gain for someone paying the standard premium is roughly $68.40 a month. Higher earners who pay income-related surcharges will keep less. The final 2027 premium has not been set, so treat $6.60 as the projection, not the outcome.

Who it actually hits

For a pharmacy, a diner or a home-care agency in a retirement-heavy town, the COLA is a predictable, inflation-linked raise in customers' monthly income, arriving in January. It matches prices that have already risen. It does not widen anyone's budget.

The same fact cuts the other way for the federal budget and for employers. A 3.6% adjustment is another year of inflation getting built into a large fixed payment stream, and it landed on the same morning that headline CPI printed 3.7%. Traders watching the Fed will read that as confirmation that price pressure is broad, which is part of why rate-hike odds have stayed in focus.

If you run a business with older customers, the practical point is timing. The money shows up in January checks, so a seasonal slow stretch that depends on fixed-income customers will not get relief until then.

Sources: CNBC reporting the Social Security Administration announcement and Medicare trustees' projections; U.S. Bureau of Labor Statistics CPI-W (series CWUR0000SA0), retrieved October 14, 2026. The three-month averages and the $6.60 and $68.40 figures are our calculations. This is economic information, not financial advice.