Does the June inflation report set the 2027 COLA?

No. The COLA is based only on CPI-W for July, August, and September. A report covering May (released in June) shows the inflation trend but is not part of the COLA calculation.

Which months actually determine the COLA?

The third quarter — July, August, and September. Social Security averages those three months of CPI-W and compares them to the same months a year earlier.

When is the official 2027 COLA announced?

In mid-October 2026, after the September CPI-W is published. The increase then takes effect with benefits payable in January 2027.

What is the current 2027 COLA estimate?

About 3.9%, according to The Senior Citizens League as of spring 2026. It is an independent estimate, not an official figure, and can still change before October.

What inflation index does Social Security use?

The CPI-W — the Consumer Price Index for Urban Wage Earners and Clerical Workers, produced by the Bureau of Labor Statistics. By law it is the measure used to set the COLA.

What the New Inflation Report Means for the 2027 COLA

A fresh inflation report lands June 10, and it will hint at where the 2027 Social Security COLA is heading. But here is the catch most coverage skips: it won’t actually count toward the COLA — only July through September will.

A new inflation report arrives Wednesday, June 10, 2026, and it will offer the next clue about the 2027 Social Security cost-of-living adjustment (COLA). Here is the part most headlines skip: this report does not count toward the COLA. The adjustment is calculated only from July, August, and September data — so reports before then signal the trend, not the result.

What's being released

On June 10 at 8:30 a.m. ET, the Bureau of Labor Statistics publishes the Consumer Price Index for May 2026 — the monthly snapshot of how prices changed. Markets and retirees watch it closely because inflation drives the COLA. (See the BLS release schedule.)

Why it doesn't set the COLA (but still matters)

By law, the Social Security COLA is based on a specific, narrow window: the average CPI-W (the index for urban wage earners) for the third quarter — July, August, and September — compared with the same three months a year earlier, rounded to the nearest tenth of a percent. The result is announced in mid-October and takes effect the following January.

That means a May or June report isn't part of the math. What it does is show the direction inflation is heading as the economy moves toward the three months that actually decide the number. A hot spring reading hints at a larger COLA; a cooling one hints at a smaller one.

Where the 2027 estimate stands

The latest independent estimate from The Senior Citizens League is about 3.9% — up from 2.8% earlier in the spring, reflecting rising prices. It is only a forecast and can still move. For the full picture, see our explainer on what an estimated 3.9% 2027 COLA could mean.

What to actually watch

The reports that count are the July, August, and September CPI-W figures — released in August, September, and mid-October. The September reading is the last piece, which is why the official COLA lands in October. We'll post the confirmed number on our COLA tracker the moment it's announced.

This article is for general education and is not financial advice. COLA figures discussed here are estimates, not official Social Security Administration numbers. Confirm details at ssa.gov/cola.