43 CFR § 429.37
Does interest accrue on monies owed to the United States during my appeal process?
June 11, 2020
Except for any period in the appeal process during which a stay is then in effect, interest on any nonpayment or underpayment, as provided in §429.33(a), continues to accrue during an appeal of a Regional Director's final determination, an appeal of the Commissioner's decision to OHA, or during judicial review of final agency action.