Retirees are getting an early read on next year’s Social Security raise, and it looks bigger than the one they got this January. Two of the most-watched independent trackers now put the 2027 cost-of-living adjustment somewhere between 3.6% and 3.8% — but neither number is final, and the Social Security Administration will not lock in the real figure until October.
Why two different forecasters land on two different numbers
AARP’s COLA tracker currently projects a 2027 increase of roughly 3.6%, while The Senior Citizens League, an advocacy group that publishes its own monthly forecast, is estimating closer to 3.8%, according to AARP’s COLA 2027 estimate page. The gap between the two comes down to methodology and timing: both groups are extrapolating from the same underlying inflation index, the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W), but they weight recent months differently and update their models as new inflation data lands. Either estimate would land well above the 2.8% COLA that took effect in January 2026, reflecting inflation that has run hotter through the middle of 2026 than it did the year before.
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What a 3.6% to 3.8% raise means in dollars
Applied to the average retired-worker benefit, a 3.6% increase works out to roughly $75 more a month, or about $900 over a full year; a 3.8% increase works out to closer to $77 a month, or roughly $925 a year. Those are averages, not guarantees for any individual check — a COLA is a percentage applied to each person’s own benefit amount, so a retiree drawing a larger-than-average check sees a larger dollar increase, and someone drawing a smaller check sees less. The percentage is the same for everyone; the dollar figure is not.
Why the real number will not be known until October
Social Security calculates its annual COLA by comparing the average CPI-W reading from the third quarter (July, August, and September) of the current year against the same three-month average from the prior year, a formula the agency lays out on its official COLA methodology page. Because the calculation needs a full quarter of data, the September inflation report — typically released in mid-October — is the piece that finally completes the math. The Social Security Administration has historically announced the coming year’s COLA in mid-October, ahead of the first COLA-adjusted checks going out the following January. Until that September data is in hand, every published figure, including the ones in this article, is an estimate built on partial-year trends.
Why the projection has moved before and could move again
COLA forecasts are not static once published; both AARP and The Senior Citizens League revise their numbers as each new monthly inflation report comes out, and the estimate for 2027 has already shifted over the course of 2026 as the underlying CPI-W data has come in. A cooler-than-expected August or September inflation reading could pull the final COLA down toward the lower end of the current range, while a hotter reading could push it above 3.8%. Retirees budgeting around next year’s raise should treat any number published before the official October announcement as a planning estimate, not a figure to lock spending decisions against.
What the higher estimate means alongside Medicare premiums
A larger COLA is not pure upside for every retiree. Medicare Part B premiums for the following year, detailed on Medicare’s own costs page, are typically announced around the same time as the COLA, and any premium increase is deducted directly from Social Security checks before a retiree ever sees the raise. Retirees who saw only a modest net increase in January 2026, despite that year’s 2.8% COLA, watched a chunk of the increase absorbed by a higher Part B premium — a pattern worth watching again once both the 2027 COLA and the 2027 Medicare premium are finalized in the same October-to-November window.
Why 2027’s estimate is running ahead of 2026’s
The jump from a 2.8% COLA in 2026 to a projected 3.6%-to-3.8% figure for 2027 traces back to inflation trends earlier in 2026, which both AARP and The Senior Citizens League cite as the driver behind their higher forecasts. Tariff-related price pressure on imported goods was cited by several outlets tracking the 2027 estimate as a contributing factor pushing CPI-W higher through the middle of the year, though the final calculation depends entirely on the July-through-September window rather than any single earlier month. A COLA in the high-3% range, if it holds, would mark one of the larger annual increases retirees have seen since the historically high 8.7% adjustment in 2023 and the 5.9% adjustment the year before that — a reminder that COLA size tends to track the broader inflation cycle rather than moving in a steady, predictable band year to year.
What retirees can do with an estimate this far ahead of the announcement
Because the projected range will not firm up until the official October announcement, financial planners generally advise against locking in spending plans around either the low or high end of the current 3.6%-to-3.8% estimate. A retiree who wants to sanity-check their own numbers can watch the same input Social Security itself uses: the monthly CPI-W releases from the Bureau of Labor Statistics, published roughly two weeks after each month ends, which is the same data AARP and The Senior Citizens League refresh their own projections against. Once September’s CPI-W reading is published in October, the projection stops being a projection and becomes the actual 2027 COLA that will show up in January benefit statements.
This article was researched and drafted with the assistance of AI and reviewed by The Financial Wire editorial team.
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David M. Keller is a finance writer based in Columbus, Ohio, covering personal finance and consumer-focused economic topics. He earned his degree in journalism from Ohio University and began his career reporting on local business and economic trends for a regional media outlet. Since then, he has contributed to a variety of online publications, focusing on clear, practical coverage of topics such as cost of living, debt, and everyday financial decision-making.
