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Internal Revenue Service

Business

Form W-4
Employee’s Withholding Allowance Certificate

Form W-9
Request for Taxpayer Identification Number and Certification

Form I-9
Employment Eligibility Verification

Colorado Secretary of State
(>>> File an annual report)

Colorado Department of Revenue

Colorado Department of Labor and Employment

Colorado Minimum Wage Facts Sheet (PDF)

Colorado Affirmation of Legal Work Status (PDF)

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