5 C.F.R. § 179.306
A debtor who admits liability but elects not to have the debt collected by administrative offset will be afforded an opportunity to negotiate a written agreement for the repayment of the debt. If the financial condition of the debtor does not support the ability to pay in one lump-sum, reasonable installments may be considered. No installment arrangement will be considered unless the debtor submits a financial statement, executed under penalty of perjury, reflecting the debtor's assets, liabilities, income, and expenses. The financial statement must be submitted within 10 business days of OPM's request for the statement. At OPM's option, a confess-judgment note or bond of indemnity with surety may be required for the installment agreement. Notwithstanding the provisions of this section, any reduction or compromise of a claim will be governed by 4 CFR part 103 and 31 U.S.C. 3711 .
5 C.F.R. § 179.306