There is now an IGB Bank Account limit that can be set by the game admin.
This limit is the maximum amount of cash you can have in your bank account. Once your account hits that limit you cannot depost anymore cash but you can still earn interest on what is there.
Right now the setting is at 100,000,000,000 credits.
Sorry Bankers you have to put your money at risk on your planets or ship but this allows a player to have a store of cash if they get down on their luck.