“Guilds are a great way to connect to a community. Members have many ways to communicate in the game, website, and from mobile devices.
Guilds can also earn influence to purchase upgrades such as leveling bonuses, shared item vaults and the ability to throw partiesYou may join a guild or start your own!
— Guild interface
Guilds are formal groupings of players that enable them to play together more effectively and reward them for doing so.
To create a guild, open the guild panel and click on the "Create Guild" button. You will be asked to enter a guild name (up to 31 characters) and a tag of up to four characters. Alternatively, speak to a Guild Registrar in any of the major cities.
A guild and/or its features cannot be transferred to a different world. Influence collected and upgrades developed are tied to the world it was earned on. This means an account can transfer freely to another world and gain the benefits of that world's guild features.
- Primary article: Influence
Members earn influence for the guild that they represent by being present and participating in activities. The more members that participate together, the faster the guild gains influence, which can be used to purchase upgrades for the guild in four categories:
- Architecture — Purchase shared storage and increase the number of upgrades the guild can work on at once.
- Art of War — Buffs used in WvW
- Economy — Buffs to increase members ability to earn karma, find magic items, or gather materials.
- Politics — Emblems, influence buffs, guild armor, and party items.
Initially, guilds can include up to 50 members across any number of home worlds; this can be increased up to a limit of 500 members for guilds that meet relevant requirements. However, members can only participate in WvW together if they belong to the same world.
To join a guild, open the guild panel, choose the "management" tab, select the guild from the list, and press the "Join Guild" button. Players can accept invitations to multiple guilds. To leave a guild, select the guild and if you are representing, choose "stand down" then the "leave guild" button will become available.
Each player account can belong to multiple guilds. However, each character may only represent one guild at a time; only that guild earns influence from the character's actions. In addition, the character only has access to guild features of the represented guild, notably shared storage, buffs, and guild-wide chat.
To change the guild represented, open the guild panel, choose the "management" tab, select the appropriate guild, and choose "represent".
Each guild can organize members into up to ten ranks; the titles and the permissions of each group can be customized. To change a member's rank, open the guild roster, and right-click their rank icon.
Default ranks and permissions
By default, the game creates the ranks of Leader, Officer, and Member with the following permissions:
1 This setting specifies the rank that new members are assigned when they join.
Costs to increase guild size
There are three Architecture upgrades that allow a guild to provide up to 250 slots of shared storage, which can be viewed by visiting a Guild Banker, an NPC that can always be found next to standard Bankers in cities.
- Guild Stash: 50 slots.
- Guild Treasure Trove: 100 slots.
- Deep Cave: 100 slots.
The guild's leadership can specify the type of access each rank has to storage, for example allowing anyone to add items, but only allowing officers to remove them from the stash and only leaders to remove items from the trove or cave. In addition, the shared storage panel offers an audit trail that will show who has added or removed each item and at what time.
World versus World
- Primary article: World versus World#Guilds
After adding the "Guild Item Template" upgrade in the Politics category, a guild member with the relevant permissions can speak to the Guild Registrar to create an emblem that will appear on guild banners, armor, and weapons. Each emblem consists of a two-color foreground symbol that is overlaid onto a single-color background symbol.
- Guild Armorers will sell you armor that displays your guild emblem once you have the Guild Armor Contract upgrade.
- Guild Weaponsmiths will sell you weapons that display your guild emblem once you have the Guild Weapons Contract upgrade.
- The gallery of guild emblems shows the possible designs.
- Guild halls will not be included in the initial release of Guild Wars 2; they will be implemented some time later.
- In addition, ArenaNet is considering support for out-of-game features, including a guild calendar (allowing coordination of events), guild chat from web browsers, and smartphone apps that will be available for free. 
- It is possible to assign more than one Leader (or whatever the highest rank you renamed it to) in the guild, and there is NO way of removing it yourself once you set it up.
- During the first and second beta weekend events, guild creation was free.