One more time, only this time with the math.  First, the rates you cited are tax rates for taxable income.  What's being proposed is a tax based on taxes paid, not income.  The average taxpayer pays around 15% of their taxable income in taxes (averaging the different marginal rates).  If Alaskans have to pay 15% of our federal taxes, we'll pay 15% of 15%, or 2.25% of taxable income.  You can continue to disagree, but I do this for a living.