Retirees set to receive a 2.8 percent cost-of-living adjustment in January 2026 could see a far larger boost to their monthly checks if a Senate bill gains traction. The Social Security Expansion Act, filed as S.770 in the 119th Congress, proposes an across-the-board benefit increase that would exceed the standard annual inflation adjustment. With the Social Security Administration having just locked in the 2026 COLA figure, the bill’s timing puts two competing visions for retiree income side by side: one driven by a price index formula, the other by a legislative override.
Why the Social Security Expansion Act challenges the 2.8 percent COLA
The annual COLA is calculated automatically using changes in the Consumer Price Index for Urban Wage Earners and Clerical Workers, or CPI-W. For 2026, the SSA set that adjustment at 2.8 percent, a figure confirmed in a Federal Register notice published on November 3, 2025. That percentage applies to benefits payable starting in January and covers Social Security retirement, survivor, and disability payments. By design, it tracks broad consumer inflation rather than the spending patterns of older Americans, who tend to spend more on health care and housing.
The COLA mechanism is automatic and does not require congressional action each year. The Social Security Administration explains that it compares the average CPI-W reading for the third quarter of the current year with the same period a year earlier, and any positive difference becomes the next COLA. Historical data on past adjustments show how sharply the annual percentage can swing with broader inflation, from years with increases above 8 percent to years with no increase at all. That volatility has fueled ongoing debate over whether the formula adequately protects retirees’ purchasing power.
S.770 takes a different approach. Rather than adjusting benefits by a price-index formula alone, the Senate proposal calls for a one-time benefit increase on top of whatever COLA is already in place. The bill was introduced in the Senate and referred to the Finance Committee during the current session. If enacted, it would layer a permanent raise onto existing benefits, meaning every future COLA would compound on a higher base amount. That structural difference is what separates S.770 from the routine annual adjustment: a one-time bump lifts the floor, while a COLA merely keeps pace with prices.
What the bill’s benefit increase would mean for retirees
The gap between the two approaches matters most for beneficiaries whose checks have lost purchasing power over time. Annual COLAs have frequently lagged the actual cost increases seniors face, particularly for prescription drugs and Medicare premiums. A permanent benefit increase would address that erosion in a single step, rather than relying on incremental inflation adjustments that may or may not reflect real spending pressures.
One alternative that policy analysts have long discussed is switching the COLA formula from CPI-W to the Consumer Price Index for the Elderly, known as CPI-E. The SSA maintains policy-option projections that model how such a change would affect outlays over time. Because CPI-E typically runs slightly higher than CPI-W, adopting it would produce modestly larger annual adjustments. But those gains accumulate slowly. The one-time increase proposed in S.770 would likely deliver a bigger near-term jump in total benefit spending than a decade of CPI-E-based COLAs, though no official actuarial score for the bill has been published.
For someone receiving the average retirement benefit, even a few percentage points above the standard COLA translates into meaningful monthly income. Suppose a retiree currently receives $1,900 a month. A 2.8 percent COLA alone would raise that to about $1,953. If Congress added a separate legislative increase on top of that, the new benefit could climb substantially higher, and every subsequent COLA would then be calculated on that larger figure. Over a ten-year retirement span, the compounded difference could reach many thousands of dollars.
The impact would be especially pronounced for long-time beneficiaries whose initial awards were modest and have only inched up with inflation. For these retirees, a legislative increase functions as a reset, narrowing the gap between older and newer beneficiaries with similar work histories. It also offers some protection against periods when inflation cools and COLAs are small, even as specific senior expenses such as supplemental insurance premiums continue to rise.
However, a more generous benefit structure carries fiscal trade-offs. A permanent increase would raise total program costs immediately and push projected outlays higher in future decades, since every new retiree would enter the system at an elevated level. Lawmakers considering S.770 would have to weigh those costs against any proposed revenue changes or financing adjustments meant to keep the trust funds solvent.
For now, the 2.8 percent COLA scheduled for January 2026 remains locked in under existing law. Whether retirees ultimately see more than that depends on what happens to the Social Security Expansion Act as it moves through the Senate. The debate it has sparked-between automatic inflation protection and a one-time legislative boost-underscores how central Social Security remains to the financial security of tens of millions of Americans.
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Warren Cohen is a finance writer based in Phoenix, Arizona, covering personal finance topics including credit, banking, and beginner investing. He earned his degree in business administration from Arizona State University and began his career working in consumer finance, where he gained direct experience with lending and credit systems. He now writes for personal finance websites and fintech platforms, focusing on clear, practical content that helps readers make informed financial decisions.
