Statutes and regulations
§ 39-22-601, C.R.S. Returns.
§ 39-22-604, C.R.S. Withholding tax.
§ 39-22-604.5, C.R.S. Withholding tax – transfers of Colorado real property – nonresident transferors.
Rule 39-22-604–1. Colorado Income Tax Withholding for Wages.
Rule 39-22-604–2. Colorado Income Tax Withholding for Gambling Winnings.
Rule 39-22-604–3. Colorado Income Tax Withholding for Other Payments.