Code of Federal Regulations Title 29. Labor § 29.1470.52 Collection of amounts due

(a) Any funds paid to a grantee in excess of the amount to which the grantee is finally determined to be entitled under the terms of the award constitute a debt to the Federal Government. If not paid within a reasonable period after demand, the Federal agency may reduce the debt by:

(b) Except where otherwise provided by statutes or regulations, the Federal agency will charge interest on an overdue debt in accordance with the Federal Claims Collection Standards (4 CFR chapter II). The date from which interest is computed is not extended by litigation or the filing of any form of appeal.