The existence of these services is a crime. The government already knows EXACTLY how much you owe in taxes and can bill you directly. These companies are privateering an industry through criminal lobbying. The ambiguity of taxes is a relic of the ancient past. Take out the correct amount from everyone’s paycheck, and limit tax filing to businesses. Better yet, make a simple transactions tax code for businesses and completely eliminate filed taxes and all of the wasted bureaucratic overhead that comes with it. Maybe, just maybe, someone will have the sense to tax all business transactions in a way that makes all criminal tax evasion through offshore banking a useless loophole.