Cost-of-Living Adjustment (COLA)

In Detail

A cost-of-living adjustment, or COLA, increases pension payments periodically to offset the effects of inflation. Without COLAs, a fixed pension payment loses purchasing power over time — a $3,000 monthly benefit would buy significantly less after 20 years of even moderate inflation. Some plans provide automatic annual COLAs tied to the Consumer Price Index (CPI), while others grant COLAs on an ad hoc basis at the discretion of the plan's governing board. Fixed-rate COLAs of 1-3% per year are also common.

The cost of COLAs is substantial for pension plans. A 3% annual COLA effectively doubles the plan's benefit obligation over 24 years compared to a plan with no COLA. Because of this, COLAs have become a focal point in pension reform discussions. Several states have reduced or suspended COLAs for existing retirees as a way to address unfunded liabilities, though courts in some states have ruled that COLAs are protected benefits that cannot be retroactively reduced.

Plans without COLAs can leave retirees in difficult financial situations during periods of high inflation, as their fixed income steadily loses value against rising prices for housing, healthcare, and essentials.