That is a lot lower than the $650 Billion in compliance cost pigdog keeps telling us. I can believe there is about $100-200 Billion in compliance costs including a reasonable salary people would pay themselves for the time they spent. At most actual real savings in compliance costs realized by business may be around $100 Billion by eliminating the federal income tax. But then again compliance with the sales tax will not be zero, and I don't buy the 90% less either.
Firstly - I don't "keep telling" you any such thing. I think you have me mixed up with another poster. I rarely (if ever) mention any specific numnbers in relation to compliance costs.
Since we're on the subject, however, be sure to see #236 where I note 1/2 Trillion for what amounts to compliance costs (and I suspect even that's low since it comes largely from IRS-derived numbers - and they certainly aren't going to make themselves look as bad as they really are).
And it's true - compliance costs for the FairTax will basically be zero for taxpayers - unlike at present. Even the businesses collecting the FairTax (and the states, too) are paid for doing so ... there is no unfunded mandate as at present.