Social Security beneficiaries in the United States could receive a larger cost-of-living adjustment (COLA) in 2027 than they received in 2026, according to forecasts released by AARP and The Senior Citizens League in September. The estimates point to a potential increase of 3.5% to 3.6%, which would represent a modest rise from the 2.8% adjustment implemented in January 2026.
If the final adjustment reaches 3.6%, it would be the largest annual Social Security increase since 2023, when benefits rose by 8.7%. That increase was driven by exceptionally high inflation and marked the largest COLA in four decades. However, the current projections remain estimates, and the final 2027 adjustment depends on inflation data and the statutory formula used by the Social Security Administration (SSA).
The distinction matters for millions of retirees and other beneficiaries who depend on monthly Social Security payments to cover housing, healthcare, groceries, and other essential expenses. A higher COLA can provide additional income, but its effect on purchasing power depends on how prices change over the same period.
Forecasts
September estimates from AARP and The Senior Citizens League suggested that the 2027 Social Security COLA could fall between 3.5% and 3.6%.
AARP increased its forecast to 3.6% in September from 3.5% in August. The Senior Citizens League revised its estimate in the opposite direction, lowering its projection to 3.5% from 3.6%.
Although the two organizations arrived at slightly different figures, both forecasts indicated that the 2027 adjustment could exceed the 2.8% increase beneficiaries received in 2026.
These projections are based on inflation trends and remain subject to change until the SSA completes its calculation. The agency is scheduled to announce the official 2027 COLA on October 14, 2026, following the release of September inflation data.
Beneficiaries should therefore avoid treating either estimate as a confirmed increase. The final percentage will be determined by the relevant Consumer Price Index figures rather than by forecasts from advocacy organizations.
For official updates, beneficiaries can visit the Social Security Administration’s COLA information page.
Calculation
The Social Security COLA is designed to help benefits keep pace with increases in consumer prices. Its calculation follows a statutory formula based on the Consumer Price Index for Urban Wage Earners and Clerical Workers, commonly known as the CPI-W.
The SSA compares the average CPI-W for July, August, and September of the current year with the average for the third quarter of the last year in which a COLA was determined. The percentage increase between these averages is used to establish the adjustment, with the result rounded to the nearest tenth of a percentage point.
For the 2027 COLA, the agency will compare the average CPI-W for the third quarter of 2026 with the corresponding average for the third quarter of 2025.
September’s inflation report is particularly important because it provides the final month of data needed to complete the calculation. Once the figures are available, the SSA can determine the official adjustment for the following year.
The formula provides a consistent method for adjusting benefits, but it has limitations. The CPI-W measures price changes experienced by urban wage earners and clerical workers rather than focusing specifically on the spending patterns of older Americans.
Retirees may devote a larger share of their budgets to medical care, prescription drugs, housing, and utilities than the population represented by the index. Consequently, an annual COLA may not fully reflect the changes in expenses experienced by every beneficiary.
History
Social Security COLAs have varied significantly in recent years as inflation has risen and moderated. The 2023 adjustment was unusually large, while the increases implemented in subsequent years were considerably smaller.
The following table shows the annual adjustments for recent years and the projected range for 2027.
| Year | Social Security COLA |
|---|---|
| 2023 | 8.7% |
| 2024 | 3.2% |
| 2025 | 2.5% |
| 2026 | 2.8% |
| 2027 | 3.5% to 3.6% projected |
Source: Social Security Administration for historical adjustments; AARP and The Senior Citizens League for September 2027 forecasts.
The 8.7% adjustment in 2023 was the largest in four decades. It followed a period of elevated inflation that increased the prices of many everyday goods and services.
The COLA subsequently declined to 3.2% in 2024 and 2.5% in 2025 before increasing slightly to 2.8% in 2026.
The forecasts for 2027 suggest that the next adjustment could be higher than those implemented over the previous three years. However, even a 3.6% increase would remain substantially below the 8.7% adjustment recorded in 2023.
This comparison illustrates how the COLA responds to changes in inflation rather than following a fixed annual schedule. When inflation rises sharply, the adjustment can increase substantially. When price growth moderates, the resulting benefit increase generally becomes smaller.
Historical figures and official program information are available through the Social Security Administration.
Comparison
A projected 3.6% increase in 2027 would be considerably smaller than the 8.7% adjustment in 2023, but it could still provide additional monthly income to eligible beneficiaries.
For illustration, consider a beneficiary receiving $2,000 per month before a COLA adjustment. A 3.6% increase would add $72 per month, bringing the benefit to $2,072. An 8.7% increase on the same starting benefit would have added $174 per month.
These figures demonstrate the difference between the two adjustment percentages. They are examples rather than predictions of an individual’s 2027 payment.
The actual increase depends on the beneficiary’s existing benefit amount. Someone receiving $1,500 per month would receive a smaller dollar increase than someone receiving $2,500 per month, assuming the same COLA percentage applies.
It is also important to distinguish between a higher benefit payment and greater purchasing power. The COLA increases the nominal amount beneficiaries receive, but it does not guarantee that their income will grow faster than their personal expenses.
If the costs of housing, groceries, transportation, and medical care rise faster than a beneficiary’s available income, the practical benefit of the adjustment may be limited.
Impact
For retirees, the financial significance of a 2027 COLA will depend on both the final adjustment percentage and the expenses they face throughout the year.
A higher monthly payment could help cover recurring bills, particularly for households with limited savings or few alternative income sources. However, the additional income may be partly offset by rising Medicare premiums, prescription costs, insurance payments, and other household expenses.
Medicare Part B premiums are particularly relevant because they are generally deducted directly from Social Security payments for beneficiaries enrolled in both programs. If those premiums increase in 2027, some of the gross COLA increase could be absorbed before the money reaches a beneficiary’s bank account.
Other costs, including Medicare Part D premiums and out-of-pocket prescription expenses, can also affect a retiree’s budget, although they do not all reduce Social Security payments directly.
The timing of these announcements matters. The SSA determines the COLA using inflation data, while Medicare costs are established through a separate process. Beneficiaries need to consider both figures to estimate how much additional income they may actually have available.
The Centers for Medicare and Medicaid Services publishes official Medicare information, including announcements relevant to beneficiary costs.
Outlook
The 2027 Social Security COLA could mark the largest annual adjustment since 2023 if the final figure reaches the projected range of 3.5% to 3.6%. Such an increase would exceed the 2.8% adjustment implemented in 2026, although it would remain well below the exceptional 8.7% rise recorded in 2023.
The final outcome depends on third-quarter inflation data and the SSA’s statutory calculation. Until the agency releases its official announcement, beneficiaries should treat current forecasts as estimates rather than confirmed changes to their monthly payments.
For retirees planning their 2027 budgets, the most useful approach is to consider the projected COLA alongside expected healthcare premiums and household expenses. The percentage increase provides an important starting point, but the actual effect on personal finances depends on how much prices change and how much of the additional benefit remains after recurring costs.
