A consular invoice is an extraordinary document issued by the seller of a good to stipulate the rate of duty to be applied to the product. It is therefore required on occasions of international sale and purchase. The consular invoice may be required by Customs Authorities, especially in Latin America, to establish the tariff of the goods. It will be required at the time of clearance. Sometimes this document may be replaced by a commercial invoice. It must be authorised by the consulate of the exporter’s country.