Any surplus in a sinking fund after all of the bonds for the payment of which the fund was created have been paid and canceled and after all investments of the second and third class finally have been disposed of or realized upon, must, within two years, be placed in the general fund of the municipal treasury.
N.D. Cent. Code § 21-03-45
Sinking fund - Surplus placed in general fund
Official source: North Dakota Legislative Branch. Reproduced from public-domain North Dakota statutes; confirm against the official source for the current text. Not legal advice.