The Social Security COLA 2027 increase is taking shape, with two leading forecasters publishing estimates based on the June 2026 Consumer Price Index data released on July 14. AARP, publishing its first-ever early COLA forecast, projects a 3.6 percent cost-of-living adjustment for 2027. The Senior Citizens League, or TSCL, projects 3.8 percent. Both estimates are meaningfully higher than the 2.8 percent COLA that took effect in January 2026. At 3.8 percent, the average Social Security benefit would increase by approximately $74 a month. At AARP’s 3.6 percent projection, the average retiree’s monthly benefit would rise by $75. The official COLA announcement from the Social Security Administration will be made on October 14, after the Bureau of Labor Statistics releases September inflation data, the final data point used to calculate the adjustment.
How the COLA Is Calculated: The CPI-W and Why It Matters
Before the estimates make sense, the underlying calculation methodology deserves a clear explanation.
Social Security COLAs are calculated based on changes in the Consumer Price Index for Urban Wage Earners and Clerical Workers, known as the CPI-W. The adjustment is determined by comparing the average CPI-W in the third quarter of the current year, July through September, to the average CPI-W in the third quarter of the prior year. If the third-quarter CPI-W in 2026 is higher than it was in the third quarter of 2025, the difference becomes the 2027 COLA.
The CPI-W rose 3.5 percent year-over-year in June 2026, according to the July 14 Bureau of Labor Statistics report. That is the same rate as the broader CPI-U index, which covers a wider range of consumers. The June CPI reading represents the most recent data available before the official third-quarter measurement window begins in July. The 2027 COLA will be announced on October 14, after the BLS releases September inflation data, and it takes effect with the payments beneficiaries receive in January.
The Two Forecasts: AARP at 3.6%, TSCL at 3.8%
Both AARP and TSCL have released 2027 COLA estimates based on the same June CPI-W data, but they differ modestly in methodology and result.
AARP projects a 3.6 percent Social Security cost-of-living adjustment for 2027. This is the first time AARP has announced a COLA forecast ahead of the third-quarter inflation reports. The AARP estimate is based on CPI-W data from October 2025 through June 2026 and the Federal Reserve Bank of Cleveland’s inflation projections for July, August, and September. A 3.6 percent COLA would raise the average retired worker’s monthly benefit by $75, from approximately $2,084 to about $2,159.
The Senior Citizens League projects a 3.8 percent COLA. A 3.8 percent increase would raise the average Social Security check by about $74, from an estimated $1,938 to $2,011, according to TSCL. The TSCL estimate matches their May projection and is down slightly from their 3.9 percent forecast in April. It represents a significant jump from the 2.8 percent increase TSCL projected earlier in the year.
The difference between 3.6 percent and 3.8 percent reflects different methodological approaches to projecting the July, August, and September CPI-W readings that have not yet occurred.
What Would a 3.6%-3.8% COLA Mean in Dollars
The practical impact of the projected COLA depends on each beneficiary’s specific benefit amount, but the averages give a useful baseline.
At AARP’s 3.6 percent projection, the average retiree monthly benefit of $2,084 would rise by $75 to approximately $2,159. The average monthly benefit for a surviving spouse of $1,931 would rise by about $70. Social Security Disability Insurance for the average worker with a disability at $1,635 would increase by about $59 a month.
At TSCL’s 3.8 percent estimate, the average benefit rises from $1,938 to $2,011, a gain of approximately $74 per month. The difference in benefit impact between the two estimates is small: roughly $1 to $3 per month for the average recipient, depending on their current benefit level.
For context, the 2026 COLA of 2.8 percent increased the average monthly benefit for a retired worker by about $56, from $2,015 to $2,071 per Social Security Administration estimates. The projected 2027 estimates would represent a larger increase than 2026 in both percentage and dollar terms.
Why Inflation Is Running Hotter: Iran, Tariffs, and Groceries
The projected 2027 COLA increase compared to 2026 reflects inflation dynamics specific to the current economic environment.
The recent growth in consumer prices is largely due to tariffs and the spike in energy prices stemming from the conflict in Iran, the effects of which are “rippling through the economy,” according to Indivar Dutta-Gupta, a distinguished visiting fellow with the National Academy of Social Insurance. The June CPI data showed that energy costs dipped during the short-lived Middle East ceasefire, but as the conflict reignited, gasoline prices bounced higher. This dynamic directly affects both the current COLA estimate and its potential trajectory through the third quarter.
AARP’s Rich Johnson noted that the recent growth in consumer prices is largely due to tariffs and energy price spikes, and that older Americans are feeling inflation most acutely in groceries, energy, housing, and health care, which are areas where those on fixed incomes have little room to adjust. “Family budgets have been under increasing pressure because of rising prices,” Johnson said. “The sooner that we can give them reliable information as to how much their benefits might increase next year, the sooner they can start planning.”
The June CPI reported inflation easing to 3.5 percent for the 12 months ending in June, down from 4.2 percent for the 12 months ending in May, which was the biggest jump in three years. The moderation from May to June is part of what makes the current COLA estimates moderate rather than the double-digit adjustments of 2021 to 2023.
How COLA Estimates Can Change Before October
Both AARP and TSCL are explicit that their projections can shift as new data arrives.
AARP’s Rich Johnson cautions that inflation trends could change. “This is not set in stone,” he said. TSCL noted that continued changes in the CPI may affect their estimate before the Social Security Administration announces the official COLA adjustment in October. Energy costs in particular play a significant role, and the reignition of the Iran conflict after the ceasefire collapsed on July 8 has already pushed gasoline prices back up.
If energy prices rise significantly through July and September due to Strait of Hormuz disruptions, the final CPI-W readings could push the COLA higher than current estimates. If the Iran situation stabilizes and energy prices moderate, the COLA could come in at the lower end of the range or even below AARP’s 3.6 percent projection. The current estimates represent the most informed projections available based on June data, not a final figure.
The Trust Fund Question: A Parallel Concern
The COLA estimates arrive against a backdrop of ongoing concern about Social Security’s long-term financial viability that is separate from but connected to the COLA discussion.
Social Security benefit obligations have been larger than tax revenue for about 15 years, according to Stephen Nuñez of the Roosevelt Institute. The question is not whether the system can be fixed, but rather who will bear the costs when adjustments are made. A bipartisan group of U.S. senators introduced a bill called the Promise Act to address the looming shortfall. While the legislation does not offer specific solutions, it calls on a seven-member board to draft a bill that would.
For retirees planning their 2027 budgets, the Trust Fund discussion is background context rather than immediate threat. The Social Security trustees have projected that the combined trust funds could be depleted in the early 2030s, after which only partial benefits would be payable from incoming tax revenue.
Latest Update: Official COLA Announcement October 14
The Social Security COLA 2027 increase will be officially announced by the Social Security Administration on October 14, 2026, following the BLS release of September 2026 CPI data. Until then, the AARP and TSCL estimates provide the best available guidance for beneficiaries planning their 2027 finances.
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Broader Implications: The COLA Gap and Fixed-Income Reality
The Social Security COLA 2027 increase discussion always involves a tension that TSCL has tracked for decades and that the 2021-2022 period illustrated most dramatically: COLA adjustments are designed to keep pace with inflation, but they often lag it.
Only 10 percent of seniors are happy with the amount they receive from their monthly Social Security checks, with many citing COLAs that lag inflation as a problem, according to TSCL. The 2021 to 2022 sequence illustrated this most painfully: a 1.3 percent COLA in 2021 was quickly followed by surging prices during the COVID-19 pandemic, and a 5.9 percent COLA in 2022 still fell behind peak inflation of 9 percent before the 8.7 percent COLA in 2023 helped beneficiaries partially recover lost purchasing power.
Rich Johnson at AARP notes that the COLA has outsize significance for retirees for whom Social Security is often the only source of income that is protected against inflation. For the more than 70 million Americans who receive Social Security benefits, the October 14 announcement will determine the financial starting point of their 2027.
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What Happens Next
The BLS will release July CPI data in mid-August, August data in mid-September, and September data in mid-October, just before the October 14 COLA announcement. Each data point will allow AARP, TSCL, and other forecasters to refine their estimates. The Iran-energy dynamic and ongoing tariff environment are the two most significant variables that could push the final COLA above or below the current 3.6 to 3.8 percent projected range.
FAQ
What is the Social Security COLA 2027 increase estimate?
Two organizations have released 2027 COLA estimates following the June 2026 inflation report. AARP projects a 3.6 percent cost-of-living adjustment, which would raise the average retiree’s monthly benefit by $75 from $2,084 to approximately $2,159. The Senior Citizens League projects 3.8 percent, which would raise the average benefit by approximately $74 a month. The official announcement will be made by the Social Security Administration on October 14, 2026.
How is the Social Security COLA 2027 calculated?
The COLA is calculated based on changes in the Consumer Price Index for Urban Wage Earners and Clerical Workers, or CPI-W, comparing the average reading for the third quarter, July through September, of 2026 to the same period in 2025. The CPI-W rose 3.5 percent year-over-year in June 2026. If the third-quarter average is higher than last year’s third quarter, the difference becomes the 2027 COLA adjustment.
How does the 2027 COLA compare to 2026?
The 2026 Social Security COLA was 2.8 percent, which increased the average retired worker’s monthly benefit by approximately $56, from $2,015 to $2,071. The projected 2027 COLA of 3.6 to 3.8 percent would represent both a higher percentage increase and a larger dollar increase than the 2026 adjustment, reflecting higher current inflation driven by tariffs and the Iran-related energy price spike.
When will the official 2027 Social Security COLA be announced?
The Social Security Administration will announce the official 2027 COLA on October 14, 2026, after the Bureau of Labor Statistics releases September 2026 inflation data. The 2027 COLA takes effect with the payments beneficiaries receive in January 2027. Current estimates from AARP and TSCL may change as July, August, and September CPI-W data become available.
Why is the projected 2027 COLA higher than the 2026 COLA?
The 2026 COLA was 2.8 percent, reflecting relatively moderate inflation at the time it was calculated. The 2027 projection of 3.6 to 3.8 percent reflects higher current inflation driven primarily by tariffs that have raised consumer goods prices and the spike in energy prices related to the U.S.-Iran conflict and Strait of Hormuz disruptions. If these inflationary pressures moderate before the September CPI measurement, the final COLA could be lower than current projections.
Sources and References
- Yahoo Finance / Hal Bundrick CFP (fully accessed): https://finance.yahoo.com/personal-finance/investing/article/social-securitys-2027-cola-estimate-is-out-as-inflation-cools-204917731.html
- MarketWatch (original submission, blocked): https://www.marketwatch.com/story/your-social-security-check-could-go-up-by-74-a-month-next-year-58877142
- AARP / Deirdre Shesgreen (fully accessed): https://www.aarp.org/social-security/cola-2027-increase-estimate/
