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Social Security's 2025 Cost-of-Living Adjustment (COLA) Is on Track to Yield a Double Dose of Disappointment

For most Americans, Social Security is a vital program they couldn't live without. An analysis from the Center on Budget and Policy Priorities found that it pulls 22.7 million people above the federal poverty line each year. Meanwhile, annual surveys from Gallup spanning more than two decades have shown that 80% to 90% of retirees count on their monthly payout from Social Security to cover at least some portion of their expenses.

Considering how important the monthly payouts provided by America's top retirement program are to the financial well-being of its more than 67 million beneficiaries, there's not an event that's more anticipated each year than the cost-of-living adjustment (COLA) reveal in October by the Social Security Administration (SSA).

A person counting a fanned assortment of cash bills in their hands.
Image source: Getty Images.

What is Social Security's cost-of-living adjustment (COLA) and how is it calculated?

In its simplest form, Social Security's COLA is the mechanism used to tie benefits to inflation. If, for example, the price for a regularly purchased basket of goods and services by seniors increases from the previous year, Social Security benefits should, in an ideal world, rise by the same amount to ensure no loss of purchasing power. COLA is the tool that attempts to keep benefits on par with inflation.

Before 1975, COLAs were entirely arbitrary and determined by special sessions of Congress. Between 1940 and 1975, only 11 COLAs were passed along to beneficiaries, with none administered in the entirety of the 1940s.

Since 1975, the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W) has served as the program's annual inflationary tether. The CPI-W has more than a half-dozen major spending categories and a multitude of subcategories, all of which have their own respective weightings. These weightings allow the CPI-W to be chiseled down to a single figure, which allows for easy comparisons to the previous month or year to determine if the price for a broad spectrum of goods and services has risen (inflation) or declined (deflation).

What's interesting about Social Security's COLA calculation is it only uses readings from the third quarter (July through September). While the other nine months can help identify pricing trends, they won't factor into the COLA calculation.

If the average CPI-W reading form the third quarter (Q3) of the current year is higher than the average CPI-W reading from Q3 of the previous year, prices have risen and beneficiaries will see a beefier monthly check in the following year. The amount of the increase is simply the year-over-year percentage difference, rounded to the nearest tenth of a percent.