Okay, you tell me. The income tax has disappeared along with the costs of compliance. Business save how much now? Let's see what we can expect from an anti.The FairTax base for 2004 would have been ~$9,716 billion. Add $1,173 billion in exports to that (the claim is taxes are embedded in them too) and you get $10,889 billion. This is the amount that is suppose to be reduced by the "embedded taxes." In 2004, corporate income taxes were $189.4 billion, add half of the employment and general retirement receipts ($344.6 billion) and you get a grand total of $534 billion in tax revenue from corporations. That is 4.9% of the FairTax base plus exports. Add an extremely generous $100 billion compliance cost and you get 5.8% of the FairTax base.
What do you mean by "base"? If you're saying that total retail sales in the US for 2004 were 9 billion you're off by a trillion or so.