DDonald GLevel 14 years agoJun 9, 2022 5:28 PM UTC40150 replies7 viewsThe following diagnostic is generating: Any taxpayer claiming the Colorado source capital gain subtraction must include a signed affidavit with the return. A copy of federal form Schedule D and/or form 4797 should be included with the Colorado source capital gain affidavit. Solution: Help Article COIndividual