The Currency menu displays information on all currencies in the player's possession.
Company Credits are a currency passively earned by Free Companies as their members complete various activities in the game. They are spent on items and FC actions with the OIC Quartermaster of your aligned Grand Company. They can also be used at the Resident Caretaker in residential districts or the Mammet Voyager #004A in the Free Company Workshop.
- Storm Seals from The Maelstrom
- Flame Seals from The Immortal Flames
- Serpent Seals from The Order of the Twin Adder
Tribal currencies are earned as quest rewards from their corresponding factions.
Ventures are used to pay for Retainer Ventures. They can be purchased from Grand Company Quartermasters for 200 Company Seals each, as well as with other currencies. They are also earned as Beast Tribe Quests rewards or as a random bonus for the completion of normal levequests.
Eorzeans employ a system of units and measurements which serve to quantify various aspects of their daily lives. From currency to units of length and weight, familiarity with these concepts and their origins will afford the reader a deeper knowledge of the realm and the references employed by its residents to describe the world around them.
A History of Coin
When the Sixth Umbral Calamity came, laying waste to the land and swallowing up once-proud nations of magi and wise men, the currencies minted and circulated by these civilizations lost their value, and the economy of Eorzea returned to a primitive system of barter and trade. As the realm recovered and rebuilt itself after the dawn of the Sixth Astral Era, the currencies of Mhach and Amdapor came back into limited use, their values assigned roughly according to the worth of their component metals.
As city-states and nations came to flourish, certain interests took steps to mint their own currencies, with Sharlayan and Ishgard quick to follow suit. As contact between nations in these times was limited at best, no effort was made to introduce a universal standard, and for years, many and myriad currencies were exchanged throughout the land.
This changed in the years of peace that followed the Autumn War. Trade and diplomatic relations between nations flourished, and for reasons of economic convenience, voices calling for a universal currency grew louder.
In the year 1477 of the Sixth Astral Era, the leaders of Eorzea’s six great city-states came together, and after some debate reached the decision to mint a universal currency to be used the realm over. So it came to be that gil, a coinage once used by the ancient Allagan Empire, was reinstituted as the standard currency for all the land.
On the Design of Gil
In times of old, coins would typically bear designs inspired by heroes, leaders, or religious imagery of the nations that minted them. With the introduction of the gil as the standard currency, a new design was needed that would be neutral and acceptable to all. The design that was eventually chosen features the likeness of Nymeia, the Spinner, goddess of fate. This was seen as a fitting choice, given that the value of money can be as fickle as fate itself. 
- Encyclopaedia Eorzea: Volume I, page 20