327.104 is the July 2026 reading of the Consumer Price Index for Urban Wage Earners and Clerical Workers, the index the Social Security Act names as the measure that sets the annual raise. It is one of three monthly numbers that will decide the 2027 cost-of-living adjustment, and at the moment it is the only one that exists. Measured against the same three-month window a year earlier, it runs 3.1 percent higher. That is a reading of one third of a calculation, not a raise anyone has been granted.
What the July CPI-W Reading Actually Measures
The Bureau of Labor Statistics publishes CPI-W as series CWUR0000SA0, and July’s figure landed on August 12, 2026. It is worth separating from a different July number that circulated widely the same day. Over the twelve months ending in July, CPI-W rose 3.4 percent. That twelve-month change is a headline inflation statistic, and it is not the formula Social Security uses. Anyone treating 3.4 percent as next year’s raise is reading the wrong line of the same release.
The index itself is what matters here. CPI-W tracks prices for households whose income comes mostly from hourly or clerical wages, which is a different basket from the broader all-urban index most inflation coverage quotes. The July release put the index at 327.104 on the 1982-84 base.
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The Third-Quarter Average That Actually Decides the Raise
Social Security does not compare one month to one month. The agency’s own description of the method is a quarter-to-quarter comparison: the percentage increase in CPI-W from the third quarter of the last year a raise was set to the third quarter of the current year. In plain terms, the average of July, August and September 2026 is measured against the average of July, August and September 2025, and if there is no increase there is no adjustment.
The 2025 baseline is fixed and public. The three months came in at 316.349, 317.306 and 318.139, which average 317.2647. July 2026 alone sits 3.1 percent above that baseline. For the actual figure to land there, August and September would both have to come in near July’s level. A hotter August or September would pull the average up; a cooler pair would pull it down. Social Security’s explanation of the calculation leaves no discretion in it, which is the one reassuring feature of the whole process: nobody votes on this number.
What 3.1 Percent Would Add to a $2,071 Check
Turning a percentage into a monthly figure requires a starting benefit, and the agency publishes one. The 2026 fact sheet lists the estimated average monthly benefit for all retired workers, payable in January 2026 after the 2.8 percent adjustment, at $2,071. An increase of 3.1 percent applied to that average would work out to roughly $64 a month, or about $770 across a year.
For comparison, the 2.8 percent adjustment that took effect this January raised the average retirement benefit by about $56 a month, according to the agency’s announcement. The gap between those two figures is the entire practical stake in the next two CPI-W releases. It is also worth noting what the number does not account for: the 2027 Medicare Part B premium has not been set either, and a premium increase deducted from the same check can absorb part of a raise before it is ever seen.
Recent history gives the range some shape. Social Security put the average adjustment over the past decade at about 3.1 percent, with 2.5 percent in 2025 and 2.8 percent in 2026. A 2027 result near the level implied by the July reading would land squarely in the middle of that ten-year record rather than at either edge of it. That also means a household planning next year’s budget has a defensible working assumption, provided it is treated as an assumption and revisited in October.
August and September Are Still Unpublished
Third-party groups model the outcome ahead of time, and their estimates move. The Senior Citizens League, an advocacy organization that tracks the calculation, lowered its 2027 projection to 3.6 percent on August 12. That figure is a forecast built on assumptions about the two months that have not been reported, not a measurement, which is why it sits above the 3.1 percent implied by the published month alone.
Nothing is settled until the agency says so, and the agency waits for the September index before it can finish the arithmetic. Last year that announcement came on October 24, 2025, when Social Security confirmed a 2.8 percent increase for 2026 and said benefit notices would begin going out by mail in early December. The timing differs slightly by program: the 2026 adjustment reached Supplemental Security Income recipients with payments on December 31, 2025, while Social Security beneficiaries saw it in January. A beneficiary who wants the real number will get it the same way this fall: from the October announcement, and then from the personalized notice that follows, not from a projection published in August.
This article was produced with AI assistance and reviewed by a human editor. Figures are linked to their primary sources; where a claim could not be verified from the public record, we say so.
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