For purposes of this subpart—

(a) The term commercial debt means any non-tax business debt in excess of $100, arising from loans, loan guarantees, overpayments, fines, penalties or other causes.

(b) The term consumer debt means any non-tax debt of an individual in excess of $100, arising from loans—loan guarantees, overpayments, fines, penalties, or other causes.

(c) A debt is considered delinquent if it has not been paid by the date specified in the agency's initial demand letter (§ 20.4), unless satisfactory payment arrangements have been made by that date, or if, at any time thereafter, the debtor fails to satisfy his obligations under a payment agreement with the Department of Labor, or any agency thereof.

(d) The term claim and debt are deemed synonymous and interchangeable. They refer to an amount of money or property which has been determined by an appropriate agency official to be owed to the United States from any person, organization, or entity, except another federal agency.