TaxIt/TransportCosts

Transporting goods is not free. Even if you own all the /ProductionSpots a city is using and all the routes the goods will travel on, you still need to pay. Transport costs have two kinds:

Inherent transport costs

It just costs money to move things around. This is a flat rate: could be Ł1 per space, or it could vary per transport type.

Taxes

When goods are transported through a city's control radius, that city's owner claims taxes from the transporting player. The level of tax is set by the /TaxRates.