When I am dead, I hope it is said;

HR 25 allows the states to allows the states to do the tax collection if they have a conforming sales tax and allows them to retain 1/2 percent of tax collected for the service? Net result is that if your state has a sales tax you would probably be using the same method to pay the FairTax on your sales as you do to pay your existing sales tax. Ie your overhead is unlikely to change from what it is now unless you are in a no sales tax state (like NH).