§ 901.2 Demand for payment.
(a) Written demand as described in paragraph (b) of this section shall be made promptly upon a debtor of the United States in terms that inform the debtor of the consequences of failing to cooperate with the agency to resolve the debt. The specific content, timing, and number of demand letters shall depend upon the type and amount of the debt and the debtor's response, if any, to the agency's letters or telephone calls. Generally, one demand letter should suffice. In determining the timing of the demand letter(s), agencies should give due regard to the need to refer debts promptly to the Department of Justice for litigation, in accordance with § 904.1 of this chapter or otherwise. When necessary to protect the Government's interest (for example, to prevent the running of a statute of limitations), written demand may be preceded by other appropriate actions under parts 900–904 of this chapter, including immediate referral for litigation.
(b) Demand letters shall inform the debtor of:
(1) The basis for the indebtedness and the rights, if any, the debtor may have to seek review within the agency;