Wrong again! You're on a streak.

If you make $45K a year you are in the 25% tax bracket, but that does not mean you pay 25% in taxes. A single person pays 10% on the first  $9,225 earned.  15% from $9,226 to $37,450, and 25% from $37,451 to $90,750. So you "effective tax rate" is under 15%. 

There is no current Alaska income tax scheme, so you could not run any computations. Under the governor's proposal, you would pay 6% of your federal tax liability, not 6% of your income.

For me, as a single person making $65K a year, my  federal income tax is about $9,000 or a little over 14% of my income. 6% of that is $540.