Social Security COLA 2027: What to Expect Before the October 14 Announcement

Every fall, millions of Social Security recipients wait for one number: the cost-of-living adjustment, or COLA, that determines how much bigger their check gets the following year. For 2027, that number arrives on a specific date — and early estimates suggest it will be noticeably larger than last year's increase.

When will the 2027 COLA be announced?

The Social Security Administration will officially announce the 2027 COLA on October 14, 2026, at 8:30 a.m. Eastern — the same morning the Bureau of Labor Statistics releases September inflation data, which is the final piece needed to complete the calculation.

How the COLA is actually calculated

The COLA isn't a policy decision — it's a formula. Social Security compares the average Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W) across the third quarter (July, August, September) of the current year to the same quarter of the last year a COLA took effect. The percentage difference, rounded to the nearest tenth of a point, becomes the following year's COLA. If the number rounds to zero, there's no increase at all.

For 2027, that means the calculation depends on CPI-W data from July through September 2026 compared with the same months in 2025.

What analysts are projecting

To see CPI official page : https://www.bls.gov/cpi/

The exact figure won't be official until October 14, but multiple organizations have published estimates:

• The Senior Citizens League's latest projection, updated after August inflation data, puts the 2027 COLA at 3.5% — down from 3.6% in August and as high as 3.8% back in June and July, as inflation growth moderated slightly over the summer.

• AARP's latest projection is close behind at roughly 3.6%, and independent Social Security/Medicare analyst Mary Johnson also projects 3.5%.

• With two of the three needed months of data now final, most forecasts have narrowed to a 3.4%–3.6% range, with the last word depending on September's inflation report.

For comparison, the 2026 COLA was 2.8%, announced on October 24, 2025, and it affected close to 75 million beneficiaries, including Social Security recipients and SSI recipients (SSI payments rise by the same percentage as Social Security).

What a 3.5%–3.6% increase would actually mean

Based on the average retired-worker benefit of about $2,086 a month as of July 2026, a 3.5% COLA would add roughly $73 to the average monthly check, and a 3.6% COLA would add about $75. Individual increases vary based on your own benefit amount — the percentage applies to your specific benefit, not the national average.

When the increase actually shows up

Like every COLA, the 2027 adjustment takes effect with the December 2026 benefit, which is paid in January 2027. SSI recipients typically see their increased payment arrive at the very end of December, because of how the SSA schedules payments around the New Year's holiday.

A few things to watch alongside the COLA

• Medicare Part B premiums move too. CMS typically announces the following year's standard Part B premium in November, after the COLA is set. For some beneficiaries, a Part B premium increase can offset part of the COLA — a "hold harmless" provision limits how much this can reduce your net increase, but it's worth checking both numbers together rather than assuming the full COLA reaches your bank account.

• A bigger check can mean a bigger tax bill. How much of your Social Security benefit counts as taxable income depends on your total combined income — the same thresholds we've covered separately are worth checking again once your new benefit amount is set.

• This is an estimate until October 14. Treat any percentage published before the official announcement as a projection, not a guarantee — the final CPI-W data for September can still move the number in either direction.

The bottom line

The 2027 COLA becomes official on October 14, 2026. Current projections cluster around 3.6%, which would be a meaningfully larger increase than 2026's 2.8% — but the real number depends on inflation data that hadn't been fully released as of this writing. Check back after October 14 for the confirmed percentage and dollar impact.

Disclaimer: This article is provided for informational and educational purposes only and does not constitute financial, legal, or tax advice. The COLA figures mentioned are based on current estimates and projections prior to the official Social Security Administration (SSA) announcement on October 14, 2026. Official benefit amounts and Medicare Part B premiums may vary based on individual circumstances and finalized government data. Please consult the official Social Security Administration website (SSA.gov) or a certified financial professional for personalized guidance