Social Security COLA 2027: How Much Will Your Check Go Up?

# Social Security COLA 2027: How Much Will Your Check Go Up?

> **Quick answer:** The 2027 Social Security COLA is projected at 3.9%–4.2%, based on CPI-W inflation data through May 2026. At 4%, the average retiree benefit of $2,081/month increases by $83/month ($996/year) before Medicare offsets. Four retirement types each experience this differently: COLA-Dependent Retirees feel every dollar; Supplemented Retirees redirect the raise as a bonus; Working Near-Retirees use it to refine their filing-age strategy; and Medicare Double-Hit Retirees watch Part B premiums swallow a third of the raise.

> **Disclaimer:** This article is for informational purposes only and does not constitute financial or legal advice. Social Security rules are complex and individual. Consult a certified financial planner or Social Security Administration representative before making claiming decisions.

The Social Security cost-of-living adjustment for 2027 is shaping up to be the largest since 2023 — and for the 72 million Americans who receive benefits, the stakes are real. Forecasters at the Senior Citizens League projected 3.9% in May 2026, while independent analyst Mary Johnson estimated 4.2% based on surging energy and food prices driven by tariff-related inflation. The official number won't arrive until October 2026, but the trajectory is clear: inflation is running hot, and this year's COLA reflects it.

## The CPI-W Formula Behind Your 2027 Raise

The Social Security Administration does not set the COLA — inflation does, through a formula written into law. The SSA compares the average Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W) for July, August, and September 2026 against the same three-month average from 2025. The percentage increase between the two periods becomes the 2027 COLA. If prices fall or hold flat, the COLA is zero — as it was in 2010, 2011, and 2016.