2027 COLA Forecast: Why Experts Predict a 3.5% Raise (Biggest Since 2023)

If you have been following the predictions, you have probably seen the same number pop up again and again: 3.5 percent. That is the figure most experts have settled on for the 2027 Social Security cost-of-living adjustment, and if it holds, it would be the biggest raise beneficiaries have received since the 8.7 percent adjustment for 2023. But forecasts do not just appear out of nowhere. Here is who is predicting what, and why the number looks the way it does.

First, a quick reality check on where we stand. The 2026 COLA was 2.8 percent — a modest bump that many retirees felt was swallowed whole by rising prices. A 3.5 percent adjustment would be a meaningful step up from that. It is not 2023-level money, but in the context of recent years, it is a solid raise.

Who Is Predicting 3.5 Percent

The most closely watched forecast comes from the Senior Citizens League, an advocacy group that tracks this stuff for a living. They have issued their final prediction: 3.5 percent. That is down a tenth of a point from their previous forecast of 3.6 percent, which tells you the inflation picture cooled just slightly in recent weeks.

AARP has landed in the same place, trimming its own estimate from 3.6 percent to 3.5 percent. And Mary Johnson, an independent Social Security and Medicare policy analyst whose forecasts get a lot of attention, has been in the same neighborhood — she has discussed figures around 3.4 to 3.5 percent. When the major independent trackers all converge on the same number, that is usually a sign the math is fairly settled.

The broader range of serious estimates runs from about 3.3 percent on the low end to 3.6 percent on the high end. Nobody credible is predicting anything dramatically outside that band at this point.

Why Estimates Fell From the Summer Highs

Here is the interesting part. Back in June and July, some forecasters were talking about numbers as high as 3.8 percent. So what changed? In short, inflation did not run quite as hot as feared.

The August inflation report was the turning point. Consumer prices rose 3.4 percent over the previous year — elevated, but not the runaway reading some had braced for. The specific index Social Security uses, the CPI-W, came in at 328.481 for August, up 3.5 percent from a year earlier. Solid, but a touch cooler than the trajectory implied by the summer estimates. Each monthly reading that comes in below the scary scenarios shaves a little off the projected COLA.

Gas prices have been a wild card all year, spiking at times amid global tensions, and energy costs feed directly into the inflation indexes. But the overall trend through late summer was one of inflation easing just enough to bring forecasts down from their peaks — without collapsing to the point where the COLA would be small.

Why September Still Matters

Even with all this agreement, nobody will commit to a final number until the September inflation data arrives on the morning of October 14. That is because the COLA formula uses the average of July, August, and September CPI-W readings compared with the same three months last year, rounded to the nearest tenth of a percent.

Two of the three months are locked in. September is the swing vote. A hotter-than-expected September could push the final figure toward 3.6 percent. A cooler one could drag it toward 3.3 or 3.4 percent. The forecasters are essentially betting that September comes in fairly normal — and if it does, 3.5 percent is where the math lands.

What 3.5 Percent Would Mean in Practice

Percentages are abstract. Here is what 3.5 percent looks like in dollars. The average beneficiary check of about $1,940.08 would rise by roughly $67.90 a month, to about $2,007.98. The average retired worker check of about $2,071 would climb by roughly $73 a month. Those are meaningful numbers for household budgets — not life-changing, but real money.

And remember the comparison that matters: 2.8 percent last year, a projected 3.5 percent this year. That is a raise on top of a raise, compounding year after year. Over time, that compounding is exactly what the COLA is designed to do — keep benefits from quietly losing their purchasing power.

Takeaway: The experts have converged on 3.5 percent for good reason — the inflation data through August points right at it. September's report is the last variable, and the official word comes October 14.

Note: The official 2027 COLA will be announced on October 14, 2026. All figures in this article are forecasts, not final amounts.