31 C.F.R. § 1.25
(a) Accounting of certain disclosures. Each component, with respect to each system of records under its control, shall:
(b) Accounting systems. To permit the accounting required by paragraph (a) of this section, system managers, with the approval of the head of their offices within a component, shall establish or implement, a system of accounting for all disclosures of records, either orally or in writing, made outside the Department of the Treasury. Accounting records shall:
(c) Exemptions from accounting requirements. No accounting is required for disclosure of records:
(d) Access to accounting by individual.