Retirement Social Security

Here’s How the 2027 Social Security COLA Is Projected To Stack up Against 2026

Current forecasts point to the biggest raise in years, with a catch.

By Josh Koebert , Edited by Laura Hohenstein

Updated Oct. 8, 2026

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For anyone living on just Social Security, the cost-of-living adjustment announced every October is one of the most important numbers of the year. In 2026, beneficiaries received a 2.8% raise, which added about $56 to the average monthly check. The projection for 2027 looks higher, and potentially meaningfully so.

Current estimates from the leading analysts cluster between 3.2% and 3.6%, with most landing near 3.5%.

If that holds when the official figure arrives on October 14, it would be the largest Social Security raise in four years. But the number is not final yet, and the estimates have already moved significantly since spring. Here is where things stand and what to watch.

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What the 2026 COLA actually delivered

The Social Security Administration confirmed a 2.8% cost-of-living adjustment for 2026, raising the average retired worker's monthly benefit from about $2,015 to roughly $2,071. That is an increase of about $56 per month, or around $672 per year.

For most retirees, the 2026 raise did not fully keep pace with what they were actually spending. Inflation ran hotter than 2.8% for much of the year, putting real financial pressure on retirees trying to stretch those checks through higher grocery, healthcare, and energy costs. The 2026 COLA did not eliminate that gap. It narrowed it at best.

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Where the 2027 projections stand right now

The most current estimates, published in mid-September 2026, show analysts converging on the mid-3% range after a volatile year of revisions.

The Senior Citizens League (TSCL), a nonpartisan senior advocacy group, now projects a 3.5% COLA for 2027, revised slightly downward from 3.6% estimated the prior month. At 3.5%, the average monthly benefit for a retired worker would increase roughly $68 per month.

AARP, on the same day, released a slightly higher forecast of 3.6%, which would add approximately $70 to $75 to the average monthly check depending on the exact benefit amount used in the calculation.

Independent Social Security and Medicare policy analyst Mary Johnson put her estimate at 3.4% based on the latest August inflation data, down from a high of 4.7% she had projected in June before inflation moderated.

The Committee for a Responsible Federal Budget (CRFB) has a more conservative projection of around 3.2%, which represents the lower end of the current range.

Here is how the estimates line up as of mid-September 2026:

Source	2027 COLA Estimate
AARP	3.6%
Senior Citizens League (TSCL)	3.5%
Mary Johnson (independent analyst)	3.4%
CRFB	3.2%
2026 actual COLA (for comparison)	2.8%

Why the estimates have moved so much

The 2027 COLA projection started the year near 2.8%, the same as 2026. Then inflation accelerated.

The CPI-W, which is the index the Social Security Administration uses to calculate the annual adjustment, rose at an annual rate above 3% for several consecutive months in early 2026. That pushed forecasts up, with some analysts briefly projecting 4.7% or higher in June.

Since then, inflation has moderated, and each subsequent set of monthly data has brought the estimates back down. Energy prices, particularly related to global oil markets, played a significant role in both directions.

The lesson: these estimates move, sometimes significantly, in the final weeks before the official number is set.

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How the COLA is calculated

The Social Security Administration does not use the Consumer Price Index that most people see in headlines. It uses a specific version called the CPI-W, the Consumer Price Index for Urban Wage Earners and Clerical Workers.

The formula averages the CPI-W for July, August, and September of the current year and compares it to the same three-month average from the prior year. The percentage difference becomes the COLA.

Only the September reading remains outstanding before the October 14 announcement. That single month's data can shift the final figure by a few tenths of a percentage point in either direction, which is why the current estimates carry a meaningful margin of uncertainty even this close to the official date.

The important caveat: Medicare Part B premiums

A higher COLA sounds like a clear win. The catch is what gets subtracted before the money reaches your bank account.

Medicare Part B premiums are deducted directly from Social Security checks for most beneficiaries. The 2026 Part B premium is $202.90 per month, up from $185 in 2025. The 2027 premium has not been announced yet, but projections suggest another increase is coming.

If the monthly Part B premium rises by $10 to $15 in 2027, a 3.5% COLA that adds $68 to the average check nets out closer to $53 to $58 after the premium increase is subtracted. The raise is still real. It is just smaller than the headline percentage suggests.

Does CPI-W actually reflect what retirees spend?

The CPI-W tracks spending patterns of urban wage earners and clerical workers, not retirees. The practical difference is that retirees spend a larger share of their income on healthcare and housing than the working population. Both categories have been rising faster than the overall inflation rate.

The Bureau of Labor Statistics produces a separate index called the CPI-E specifically designed to measure inflation as experienced by older Americans, and it consistently runs higher than the CPI-W. Social Security adjustments, however, are still calculated using the CPI-W under current law, which means even a 3.5% raise may not fully reflect what retirees are actually spending more on.

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Bottom line

The 2027 COLA is shaping up to come in somewhere between 3.2% and 3.6%, with most analysts currently pointing to around 3.5%. That would represent the largest Social Security raise since 2023, and a notable step up from the 2.8% increase beneficiaries received in 2026. The official number arrives on October 14, when the September CPI-W data will be incorporated into the final calculation.

For anyone trying to stay on track for retirement, the most practical planning move right now is to budget conservatively using a 3.2% to 3.5% range rather than the high end of estimates, and to watch for the Part B premium announcement that typically follows in November.

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