22 U.S.C. § 3793 — Interest on investments

(a) Calculation of interest For purposes of sections 3721 and 3792 of this title, interest must be computed, at a rate determined by the Secretary of the Treasury, on the investment of the United States in the Panama Canal as shown in the accounts of the Panama Canal Company at the close of business on the day preceding October 1, 1979 , and as adjusted under subsections (b) and (c) of this section. Capital investment for interest purposes must not include any interest during construction. (b) Increases and decreases in investment of United States The investment of the United States described in subsection (a) of this section— (1) must be increased by— (A) the amount of expenditures from the Panama Canal Revolving Fund, and (B) the value of property transferred to the Commission by any other department or agency of the United States, as determined under subsection (c) of this section; and (2) must be decreased by— (A) the amount of the funds deposited in the Panama Canal Revolving Fund, (B) the value of property transferred to the Republic of Panama under this chapter or any other Act on or after October 1, 1979 , and (C) the value of property transferred by the Commission to any other department or agency of the United States. (c) Value of property transferred to Commission The value of property transferred to the Commission by any other department or agency of the United States must be determined by the Director of the Office of Management and Budget. In computing such value, such Director must give due consideration to the cost and probable earning power of the transferred property, or the usable value to the Commission if clearly less than cost, and must make adequate provisions for depreciation, obsolescence, and other determinable decreases in value. Insofar as practicable, the value of such transferred property must exclude any portion of such value properly allocable to national defense. (d) Payment and deposit of interest The Panama Canal Commission must pay to the Treasury of the United States interest on the investment of the United States, as determined under this section. Such interest must be deposited in the general fund of the Treasury.