Please elaborate on your "implementation". The way I see it any implementation of a tax would sorely affect: Resiliency of price discovery at certain quantum's,

Please elaborate on your "implementation". The way I see it any implementation of a tax would sorely affect: Resiliency of price discovery at certain quantum's, Depth, Immediacy of execution (whether mechanical or economic) and breadth of liquidity. Not to mention massive compliance overheads and loss of efficiency in the middle office. Such a tax could in theory only be implemented on lit exchanges! More volume would move to the dark ATS'S/ECN's and Crossing networks. Shit people would just internalize and cross order flows and never actually execute a "trade". Making your solution pointless. Keynes hahahahaha.