Supplier's declaration in preferential trade: when to use it?

Global trade based on preferential treatment offers benefits to its participants. The main one is a reduction in financial costs due to the application of reduced tariff rates when the goods have a preferential origin. In other words, if a product originates in one country and is sold to another country with which there is a preferential trade agreement, the product may be subject to a reduced or even zero duty rate. However, the mere fact that the goods originate in a particular country is not enough to qualify for such benefits. The preferential origin of the goods must be proven, so that the customs authorities do not suspect any manipulation or fraud on the part of importers. Each specific preferential trade agreement sets out acceptable ways of proving the preferential origin of goods. A supplier's declaration is one of the means of proof. Let us find out what it is and when it can be used.