The Senior Citizens League's August tracking estimate for the 2027 cost-of-living adjustment has fallen again, this time to 3.4 percent, after the Bureau of Labor Statistics released the July Consumer Price Index for Urban Wage Earners and Clerical Workers on August 12. The estimate has been moving steadily downward since spring, when it briefly touched 3.9 percent. SSDI and SSI payments both get the COLA each January, so the trend in this estimate is the most useful early signal of what 2027 deposits will look like for disability beneficiaries.
How the COLA estimate moves with CPI-W
Social Security's COLA is calculated from the CPI-W, not the more widely cited CPI-U. The statute compares the average CPI-W for the third calendar quarter — July, August, and September — to the average for the same quarter of the previous year. The percentage change between those two quarterly averages is the COLA that takes effect the following January. Estimates from groups like the Senior Citizens League and AARP use the data published so far and project the missing months using prior-year seasonal patterns.
The August 12 CPI-W release covered July prices, which means two-thirds of the data the statute needs is now in hand. The remaining piece — the August and September CPI-W readings — will land on September 11 and October 15, respectively. The official COLA announcement is scheduled for October 14, 2026, and Social Security will publish the final percentage alongside the 2027 benefit amounts in early October. Until then, the third-quarter CPI-W averages cannot be computed exactly, but the trend in the partial data is meaningful.
What the estimate looks like for SSDI and SSI
The Senior Citizens League's 3.4 percent estimate for 2027 is materially higher than the 2.8 percent COLA that took effect in January 2026, and would be the largest annual COLA since 2023. A 3.4 percent adjustment applied to a typical SSDI benefit would add around fifty dollars a month, beginning with the January 2027 deposit. For SSI recipients, the federal base amount would move from its current level to a new figure that the actuary calculates separately each fall.
The estimate is not final. The August and September CPI-W releases can still move the final number by several tenths of a percentage point in either direction, which is why most coverage has focused on the direction of the change rather than the precise figure. If shelter or energy prices print hotter in either report, the COLA will move back up; if cooler, it will drift down.
What SSDI beneficiaries should watch for
The most important practical thing to know is that the COLA does not change a beneficiary's benefit calculation — it adjusts the dollar amount of an already-awarded benefit for inflation. The COLA is applied automatically to current monthly payments starting with the January check, and there is no application or action required on the recipient's part. Anyone receiving SSDI on the day the new rates take effect will see the new amount without having to contact the Social Security Administration.
The August estimate also has implications for the maximum taxable earnings base for 2027, which is recalculated each year from the change in average wages. While the COLA itself is a CPI-W calculation, the wage-base update is announced on the same October schedule. Anyone planning for a year with higher reported earnings in 2027 should expect the SSA to publish the new contribution base alongside the COLA on October 14.
How this year's COLA picture differs from earlier years
The trajectory of the 2027 estimate mirrors the 2023 cycle more than 2024 or 2025. After two years of historically low COLAs, the partial data is pointing toward a larger adjustment because CPI-W inflation in mid-2026 has been running ahead of the year-ago period by enough to produce a percentage change in the mid-threes. Whether the eventual official number lands closer to 3.2 or 3.6 percent will depend on the August and September releases, but the direction is unlikely to reverse.
For a fixed-income disability household, the practical effect of a 3.4 percent COLA versus a 2.8 percent COLA is a few hundred dollars over the course of a year, which can be the difference between absorbing a Medicare premium increase and not. It does not change eligibility for SSDI, does not extend or shorten the award period, and does not affect the medical-vocational rules used to evaluate disability claims.
What to expect between now and October 14
Three pieces of news will arrive in the next six weeks. The August CPI-W release on September 11 will incorporate July data — already reflected in current estimates — and any revisions to prior months. The September CPI-W release on October 15 will come a day after the official COLA announcement and is not used in the final calculation, but it will still move estimates for 2028. The COLA itself will be announced on October 14, 2026, alongside the 2027 wage base, the new SSI federal benefit rate, and the bend points used in the SSDI benefit formula.
For now, SSDI and SSI beneficiaries should plan for a COLA meaningfully larger than the one applied in January 2026, with the caveat that the final number is not yet locked in. The current estimates are an early signal, not a guarantee, but the trend line is consistent.