Social Security 2027 COLA Forecast Rises to 3.5%

2027 Social Security COLA Forecast: 3.5% to 3.6% Benefit Increase

Social Security’s 2027 cost-of-living adjustment is tracking above this year’s raise, with leading forecasts clustered at 3.5% to 3.6%. The official figure is not set yet. The Social Security Administration is expected to announce it on October 14, 2026, after the Bureau of Labor Statistics publishes September inflation data.

That range would beat the 2.8% adjustment beneficiaries received for 2026 and would be the largest annual increase since 2023, if it holds. More than 70 million people receive Social Security or Supplemental Security Income, so the yearly COLA is one of the most watched benefit announcements in the federal calendar.

What the latest forecasts say

After August inflation data, the estimates tightened:

The Senior Citizens League: 3.5%
Independent analyst Mary Johnson: 3.5%
AARP: 3.6%

The COLA is not based on a single month. It uses the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W) for July, August, and September, compared with the same three months a year earlier. July and August are in. September is the missing piece, which is why the number can still move.

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If September’s CPI-W simply matched August, some calculations point to a rounded COLA nearer 3.4%. A modest rise in September is what would lock in 3.5% or 3.6%. A sharp move in energy prices is the main reason analysts still leave room on either side.

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What a 3.5% or 3.6% raise looks like in dollars

These are estimates, not the SSA’s final benefit amounts. At 3.6%:

$1,000 a month: about $36 more
$1,500 a month: about $54 more
$2,000 a month: about $72 more
$2,500 a month: about $90 more
$3,000 a month: about $108 more

AARP has said a 3.6% adjustment would lift the average retired worker’s benefit by roughly $75 a month. At 3.5%, the typical check rises by about $73, depending on which average benefit figure is used. The Senior Citizens League has put the average monthly gain at about $68 on a lower average-benefit base.

On a $2,000 benefit, 3.6% is about $864 over a full year before any deductions. Larger benefits scale in the same way. The percentage is the same for everyone; the dollar raise is not.

Why the check may not rise by the full COLA

Medicare Part B premiums are deducted from most retirement benefits. Analysts have already flagged that a higher Part B premium in 2027 could absorb part of the COLA, especially for people whose benefit is near the average. The percentage raise and the amount that actually lands in the bank account are not the same thing.

The COLA also does not reflect every retiree’s personal inflation. CPI-W tracks urban wage earners. Housing, medical care and food can move differently from that index, which is why a larger COLA can still feel thin once premiums and household bills are paid.

When the official number arrives

The SSA is expected to announce the 2027 adjustment on October 14, 2026, the same day September CPI is released. The new rate applies to benefits paid in January 2027. SSI payments that reflect the new COLA typically start with the end-of-December payment.

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Until that announcement, 3.5% to 3.6% is a forecast band, not a guarantee. It would take a clear surprise in September inflation to push the result well outside that range, but the adjustment is not final until the third month of data is in.