Colorado Chamber of Commerce

Business advocacy group

Appears in 1 story · Last updated Nov 11, 2026

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Colorado replaces its flat income tax with a six-bracket system

Rule Changes

Opposed Amendment 87

Amendment 87 leads 51.64% to 48.36% in Colorado's unofficial count, with 1,357,905 votes for and 1,271,712 against. The measure replaces the state's 4.4% flat income tax with six brackets that reach 8.4% on income above $1 million, starting with tax year 2027.

Updated 7 hours ago