Guilds will have banks that are managed by the Guildmaster, treasurer and one other selected member.
Contribution to the bank at will is permitted but withdrawal must happen by one of the 3 officers.
Guilds can specify membership fees paid per day/week/biweekly/Monthly at the beginning of the period. Payments are automatic and in the form of credits, gc, gold bars or all the above.
Gains received by guild members whether plunder, trade, player to member are subject to a defined share % payable to the guild bank automatically.
The guilds can set these to 0 or set a number to them.