11 C.F.R. § 9004.5

Investment of public funds or any other use of public funds that results in income is permissible, provided that an amount equal to all net income derived from such a use, less Federal, State and local taxes paid on such income, shall be paid to the Secretary. Any net loss from an investment or other use of public funds will be considered a non-qualified campaign expense and an amount equal to the amount of such loss shall be repaid to the United States Treasury as provided under 11 CFR 9007.2(b)(2)(i).

[60 FR 31876, June 16, 1995]