Well that scenario is only the tip of the iceberg, negative rates are effectively an on demand tax and one you may not have recourse against. I am sure some ver

Well that scenario is only the tip of the iceberg, negative rates are effectively an on demand tax and one you may not have recourse against. I am sure some very well off could employ money shifting processes to keep their money out of the category and it may become a service that banks offer "for a fee" to anyone. Which in turn would end up having the government just change the regulations preventing it or charging for it. the real threat is the trail created which no government is going to allow you to vacate. just the possibility of a prior acquaintance or business transaction running afoul of the can give some the means to penalize you for past legal deeds in some countries. let alone put you under the scope for having performed now illegal activities, after all why would the want to suspect you aren't predisposed to do it again? finally it really can be used to put a damper on people just leaving high tax areas because they can just electronically debit you for the act.