Versions of 5 CFR Part 591 - Allowances and Differentials on LawServer 2024 5 CFR Part 591 – Allowances and Differentials 2023 5 CFR PART 591 – ALLOWANCES AND DIFFERENTIALS 2022 5 CFR Part 591 – Allowances and Differentials 2021 5 CFR Part 591 – Allowances and Differentials 2020 5 CFR Part 591 – Allowances and Differentials