Port tariffs are fees charged by port authorities for services rendered. There are many factors that influence the level of port tariffs, including competition between ports, the type and volume of cargo, trade routes, port costs and facilities, transport methods used, exchange rates, agreements between ports, subsidies and regulations, and marketing. Port tariffs include fees for vessel berthing and cargo handling, storage, equipment usage, security, and more. Tariffs vary based on ship size and type, cargo type and amount, container usage, passenger volume, and other considerations. Exemptions may apply to some goods in transit.