Better yet, get rid of the IRS and go with the Fair Tax.
I'd agree, except for the concept of a "Prebate", which is supposed to be a minimum income available to low-income people. The value of the prebate is determined by Congress, and once you do that, you're right back where you started from. Either remove the prebate or can the Fair Tax.
I'll go with Milton Friedman's 17% flat tax on all sources of income. If you have wage, interest, dividend, or capital gain income, the distributing institution withholds 17% and sends it to the new Tax Collections department, since the IRS is now defunct. Your new Federal Tax form now fits on a postcard and the Tax Code is one sentence long: You owe us 17% of all income. Done.
FairTax bump!