Based on the most recent BioWare Video, the following can be determined about the upcoming Guild Banks (subject to change, of course):

1) Each Guild Bank Tab has 90 slots (10 x 9)
2) You can purchase additional Tabs - in the video 5 were shown, and a 6th Tab was shown as costing 5 Million Credits.
3) Each Tab can be re-named - thus allowing for specialized Tabs for Operations, Crafting Materials, etc.
4) There is a Permissions Management section (with drop-downs to allow different ranks different permissions?)
5) Tabs can be toggled as Viewable or not - thus hiding allowing some items to be hidden from Guild Members if desired.
6) There is a place to determine how many items can be withdrawn per week from each Tab.
7) There is a toggle for each Tab to allow "Stack Separately".
8) There is a place to determine how much money per week may be withdrawn.
9) There are Toggles for allowing repairs and/or re-specs from Guild funds.
10) The maximum amount of money allowed to be held in the bank at one time is 999,999,999,999,999 Credits. Probably more than enough for any Guild needs. ;-)

I hope this information proves to be of interest to you. To see the actual video, which includes a preview of upcoming content, including UI Customization, Guild Banks, and a few other tidbits - go to http://www.swtor.com/media/trailers/com … d-republic