The Social Security Administration just announced a 3.6 percent cost-of-living adjustment (COLA) for benefits paid beginning in January 2027. The adjustment reflects the increase in average prices from the third calendar quarter of 2025 to the third quarter of 2026. It will add an estimated $56 billion to Social Security spending in calendar year 2027 compared with leaving benefits unadjusted, according to the Cato Social Security model.
Protecting beneficiaries from inflation is reasonable. But Social Security’s COLA relies on an index with limited population coverage that does not fully account for how consumers respond to changes in relative prices. That means taxpayers are financing benefit increases that exceed those under a more accurate measure of inflation, such as the chained CPI.
Savings from Adopting a More Accurate COLA