Oder einfacher sie dir die Beschreibung vom Original-Link (auch im von mir verlinkten Thread zu finden) an:
Zitat Zitat
This mod adds a bank to the Imperial City Market District (with a sign made by Arcanox). You can deposit and withdraw gold and earn interest at a rate of 5-7 gold per 1000 gold per day (partly dependend on your mercantile skill). For a small fee you can also use a secure chest in the vault.

New: Added banking functionality to all traders in the minor cities: You can deposit and withdraw gold, but you have to pay a 2% fee for each transaction.

Have fun!