I'd actually rather see the FTT at 0.75% than 0.5%, as in the end, it does make a difference. Not necessarily that much on the revenue side, but such a tax can help combat speculating and stock market gambling.
Also, do we have an agreement with the EU and maybe also Japan/Singapore/China/Hongkong, that they have the same FTT as we have? Otherwise, this would just make no sense, instead of transacting then in New York, they'll do it in London or Frankfurt.
0.75% level of taxes are huge. Unlike other kind of taxation, raising just 0.25 of a Financial Transaction Tax ends up having a catastrophic effect in our economy. It will mean that every transaction will cost 50% under the next fiscal year. This will certainly lead investors to get out of our nation.
Furthermore, I'm also concerned about the international backing of our financial transaction tax. Even so, I believe that at least the Eurozone Countries might have already adopted a FTT as well since their major "competitor" (Wall Street) is already complying with those rules. Nonetheless, this can be a priority for our future Foreign Policy.