How does OPM apply the CPIs?
CFR · 2024-01-01 · US · Title 5
(a) OPM uses a three-step process to adjust price indexes by relative annual or biennial changes in the CPIs. For steps 1 and 2, OPM computes the annual change by dividing the CPI from 1 year after the survey by the CPI from the time of the survey. OPM computes the biennial change by dividing the CPI from 2 years after the survey by the CPI from the time of the survey. (1) (2) (3) (b)
official document · source cfr-2024 · id 5:§ 591.226