Proportional Apportionment

Proportional Apportionment is a core method in foreign trade for handling the allocation of shared costs or benefits. It refers to allocating common costs such as freight, insurance, tariffs, and commissions, or distributing shared benefits, according to the proportion of each beneficiary (e.g., quantity, weight, value, volume). It is commonly used in LCL (Less than Container Load) shipping to apportion ocean freight by cargo volume or weight; in import customs declaration, to apportion freight and insurance to different commodities based on value proportion for calculating dutiable value; and in commission distribution, to allocate total commission according to each party's sales proportion. When using this term, note: the apportionment basis must be clear and reasonable (e.g., as stipulated in the contract by invoice amount proportion), otherwise disputes may arise; unlike 'equal apportionment,' proportional apportionment emphasizes fairness rather than equal amounts; unlike 'direct apportionment,' proportional apportionment requires calculating weights, while direct apportionment may use fixed amounts or simple counting. Additionally, proportional apportionment is often used in general average adjustment, apportioning sacrifices and expenses according to the value proportion of saved property. Foreign trade practitioners should specify the apportionment basis, calculation formula, and dispute resolution method in the contract to avoid disputes caused by unfair apportionment.