2026 Tax Tables
Colorado voters approved Proposition 121 in November 2022, reducing the state income tax rate from 4.55% to a flat 4.4%, effective January 1, 2022. Colorado's withholding system is notably simple for employers: it uses the employee's federal W-4 filing status and the federal standard deduction, so no separate state W-4 is required for most employees. The optional DR 0004 allows employees to claim additional withholding adjustments.
Calculate ColoradoWithholding →State Tax Rate
4.4% flat
State W-4 Form
DR 0004 (optional)
Tax Year
2026
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Colorado uses a flat 4.4% income tax rate, reduced from 4.55% after voters passed Proposition 121 in November 2022.
No separate Colorado W-4 is required for most employees. Colorado withholding uses the employee's federal W-4 filing status and the federal standard deduction. The DR 0004 is an optional form employees can submit to reduce withholding through additional deductions.
Colorado's standard deduction for withholding matches the federal standard deduction: $16,100 for single filers and $32,200 for married filing jointly in 2026.
Annualize the gross wages, subtract the Colorado standard deduction based on the employee's federal filing status, multiply by 4.4%, then de-annualize back to the pay period amount.