Who Must File:
Every individual, corporation, business trust, limited partnership, LLC, partner in a general partnership, association, estate, trust or any other legal entity that received income from oil and gas produced in Colorado must file a severance tax return. The return must be made for the same tax year used for federal income tax purposes and is due on or before the 15th day of the fourth month following the end of the taxable year. See General Information section for exception. If you are an oil and gas producer you must complete the DR 0021PD and retain for your records.