Supporters of Colorado’s graduated income tax measure celebrate victory

By: Chase Woodruff

Outlets: Colorado Newsline

Published: November 5, 2026

Words: 1,169

Last Updated: 3 days, 2 hours ago

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With their narrow lead holding steady with an estimated 90% of the statewide vote counted, proponents of a ballot measure to establish a graduated income tax system in Colorado declared victory on Thursday, heralding the most seismic shift in state fiscal policy in decades.

Amendment 87 will remove the Colorado constitution’s flat-tax requirement and establish a tiered system under which higher earners pay higher marginal income tax rates. The Associated Press called the …

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