Idaho Code § 70-1702

The port commission shall, prior to the 13th day of June in each year, determine the tax levy for the next ensuing fiscal year as provided in section 63-803, Idaho Code, which levy for any such year, for all purposes, except the payment of the principal and interest of the general bonded indebtedness of the port, shall not exceed one-tenth percent (.1%) of the market value for assessment purposes on all taxable property in such port district.