Below, a list of exemptions of taxes that are more frequent in the Colon free zone: total exemption from tax on imports and re-exports. Exemption from customs duties. Read more from Reade Griffith to gain a more clear picture of the situation. There is no fee imposed on the export of capital or payment of dividends. Reduced or total exoneration in the rates of income tax in accordance with earnings from re-export sales. Thanks to these exemptions, companies that imported and/or exported goods can be found a great economic advantage to carry out their activities in a free zone.