Colo. Rev. Stat. § 14-15-117

Colorado Revised Statutes 2025 — Title 14: Domestic Matters — Article 15: Colorado Civil Union Act § 14-15-117 Application of article to joint tax returns - legislative declaration 14‑15‑117. Application of article to joint tax returns ‑ legislative declaration. (1) The general assembly finds that some partners in a civil union may legally have their federal taxable income determined on either separate federal tax returns or on a joint federal tax return. Since Colorado income tax filings are tied to the federal income tax form by requiring taxpayers to pay a percentage of their federal taxable income as their state income taxes: (a) Partners in a civil union who have their federal taxable income determined on separate federal tax returns must have such income separately determined for purposes of the Colorado income tax; and (b) Partners in a civil union who have their federal taxable income determined on a joint federal tax return must have their state taxable income determined based on their joint federal taxable income. Source: L. 2013: Entire article added, (SB 13‑011), ch. 49, p. 155, 1, effective May 1. L. 2014: Entire section R&RE, (SB 14‑019), ch. 10, p. 96, 1, effective February 27. Source: Colorado General Assembly, Office of Legislative Legal Services. Colorado Revised Statutes 2025, current through the 75th General Assembly, First Extraordinary Session (August 2025). https://leg.colorado.gov/colorado-revised-statutes