Latest published CPI-W data, a transparent estimate, and the path to the official 2027 adjustment.
Flat-data scenario using the July CPI-W
Last verified August 30, 2026Estimate inputs U.S. Bureau of Labor Statistics + Social Security Administration · as of 2026-08-30The official COLA compares the average CPI-W for July, August, and September 2026 with the corresponding base-quarter average.
Use your own gross monthly benefit to estimate the monthly and annual increase. The final SSA amount can differ slightly.
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The standard Part B premium is often deducted from Social Security. A higher 2027 premium can make your bank-deposit increase smaller than the headline COLA.
SSA uses the CPI-W average for July, August, and September. It compares that average with the third-quarter average from the last year a COLA became effective. The percentage increase, rounded to the nearest tenth, becomes the COLA.
Read the full guideThe September CPI-W release is scheduled for October 14, 2026. SSA typically announces the COLA after the final third-quarter CPI-W data becomes available. Until SSA publishes the number, every value here remains an estimate or scenario.
Official evidence U.S. Bureau of Labor Statistics · as of 2026-08-30See the announcement timelineEvery important figure links back to the government publication that produced it.