Really? Did you include the Social Security and Medicare payroll taxes that each working member of the family would still be paying under Perry's plan in your calculation? That all goes away with 9-9-9 as I understand it.
No, I believe you will need to add the 7.65% payroll taxes to Perry’s plan and the 9% sales tax to all goods and services for Cain’s.
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On a separate thought, I see the optional side of the Perry’s flat tax a bad idea. We don’t really clean up the tax system by adding a new one while keeping the old in place.
Also the Fedzilla taxes, estimated at 20+%, presently embedded in the cost of consumer goods goes away under the Cain plan. They are replaced with a one-time, point-of-sale NRST of 9%.
That provides an economic advantage. But it also provides a freedom advantage. Under the NRST, everyone would contribute something.