The Bank is a Building found in the Capital Cities of CryptoCrusades. It allows Leaders to generate Gold through collecting Tariffs from different sources. Upgrading the Bank results in increased amounts of Gold generated from Tariffs.
Tariffs are small amounts of Gold that are generated from performing different actions within an Empire. Each time Tariffs are generated, they are stored in the Bank's Vault where they must manually be collected to be used by the Leader. Different sources for Tariffs are unlocked as the Bank is upgraded, which also has a direct impact on the amount of Gold generated as well.
There are currently 3 Tariff sources:
Harvests: The Bank will generate Gold each time the Leader Harvests resources.
Thieving: The Bank will generate extra Gold when an army successfully Thieves resources.