state income tax http://hppr.org en Explaining Colorado's Amendment 66 http://hppr.org/post/explaining-colorados-amendment-66 <p>Next week, Colorado voters go to the polls to vote on a state constitutional amendment to increase income taxes and fundamentally change how money goes to public schools.</p><p>Amendment 66 proposes to change Colorado from a flat-tax state and replace the structure with a progressive or graduated two-tier income tax system. Thu, 31 Oct 2013 05:01:01 +0000 Adam Vos 23642 at http://hppr.org Explaining Colorado's Amendment 66