49 CFR 1017.14 – Interest, penalties, and administrative costs
(a) The rate of interest assessed shall be the rate of the current value of funds to the U.S. Treasury (i.e., the Treasury tax and loan account rate), as prescribed and published by the Secretary of the Treasury in the
(b) The Board shall assess a penalty charge not to exceed 6 percent a year on any portion of a debt that is delinquent as defined in 4 CFR 101.2(b) for more than 90 days. This charge need not be calculated until the 91st day of delinquency, but shall accrue from the date that the debt became delinquent.
(c) The Board shall assess against a debtor charges to cover administrative costs incurred as a result of a delinquent debt—that is, the additional costs incurred in processing and handling the debt because it became delinquent as defined in 4 CFR 101.2(b).
(d) When a debt is paid in partial or installment payments, amounts received by the agency shall be applied first to outstanding penalty and administrative cost charges, second to accrued interest, and third to outstanding principal.