For CSRS Retirees:
The 2018 CSRS retiree COLA is based on the third quarter (July, August, September) average CPI-W index (1982-84=100) in 2017 over the 2016 third quarter average. 2018 CSRS COLA increase effective with January 2018 annuity payments will be 2.0%.
For FERS Retirees:
The 2018 FERS retiree COLA is based on the third quarter (July, August, September) average CPI-W index (1982-84=100) in 2017 over the 2016 third quarter average. However, if the CPI-W quarterly average increases 3% or more, they subtract 1%. A 5% increase in the quarterly CPI-W average results in a 4% adjustment. If the quarterly average increases from 2% to 3%, benefits increase by 2%. A CPI-W quarterly average increase of 2% or less will increase benefits by the change in the CPI-W quarterly average. The 2018 FERS COLA increase effective with January 2018 annuity payments will be 2.0%.
For Social Security Recipients:
The 2018 Social Security COLA is based on the third quarter (July, August, September) average CPI-W index (1982-84=100) in 2017 over the 2016 third quarter average. The 2018 Social Security COLA increase effective with January 2018 annuity payments will be 2.0%.
For FECA Employees:
The percentage increase in the December CPI-W (1982-84=100) index from year to year determines the FECA COLA increase. After the ninth month of the 12-month measuring period for the 2018 FECA COLA the Index rose 2.357%.
Source: APWU