CFR›Title 48›Chapter 99›Part 9905›48 CFR 9905.506 Citation48 CFR 9905.506CorpusDaily eCFRDisplayed edition2026-10-01Last updated2026-10-01 9905.506 Cost accounting period—Educational institutions. Previous 9905.505-63 9905.505-63 Effective date. Next 9905.506-20 9905.506-20 Purpose.