If no property of a municipal corporation against which execution has issued can be found, or if the judgment creditor elects not to issue execution against such corporation, a tax must be levied as early as practicable to pay off the judgment. When a tax has been so levied and any part thereof shall be collected, the treasurer of such corporation shall pay the same to the clerk of the court in which the judgment was rendered, in satisfaction thereof.
Iowa Code § 626.24