50 CFR § 80.124
How may an agency use unexpended program income?
July 17, 2020
A State fish and wildlife agency must spend program income before requesting additional payments under an award. If the agency has unexpended program income on its final Federal financial report, it may use the income under a subsequent grant for any activity eligible for funding in the grant program that generated the income.
[84 FR 44788, Aug. 27, 2019]