Colorado is known for its business-friendly environment, and its annual compliance requirements reflect that reputation. The Colorado periodic report is one of the simplest and cheapest in the nation. However, Colorado has specific requirements around entity status, foreign qualification, and employer obligations that can catch companies off guard.
Colorado Periodic Report
Every Colorado domestic and foreign LLC, corporation, and other registered entity must file a Periodic Report with the Secretary of State. Unlike most states, Colorado does not have a fixed annual due date — the report is due in the anniversary month of the entity's formation or registration. The filing fee is $10 for domestic entities and $10 for foreign entities. The report is filed online at the Colorado Secretary of State's SCORE system (sos.state.co.us).
Under CRS § 7-90-501, failure to file the periodic report within two months after the due date results in the entity being placed in "delinquent" status. A delinquent entity cannot maintain a lawsuit in Colorado courts. If the entity remains delinquent for an additional 60 days, the Secretary of State dissolves (domestic) or revokes (foreign) the entity. Reinstatement requires a $100 fee plus all delinquent periodic report fees.
Colorado Corporate Income Tax
Colorado imposes a flat 4.4% corporate income tax under CRS § 39-22-301. Pass-through entities are not subject to Colorado corporate income tax at the entity level, but individual members and shareholders pay Colorado individual income tax (also 4.4%) on their allocated income. Corporate returns (Form DR 0112) are due by the 15th day of the 4th month after the close of the tax year (April 15 for calendar-year filers).
Colorado requires estimated tax payments for corporations expecting to owe more than $5,000 in state tax, due quarterly.
Sales Tax Nexus in Colorado
Colorado has a complex sales tax structure — state sales tax is 2.9%, but home rule municipalities (there are nearly 100 of them) impose and administer their own sales taxes independently. A business with sales in Denver, Aurora, and Boulder must register with the Colorado Department of Revenue for state and state-collected local taxes AND separately with each home rule municipality for their local taxes.
Remote sellers with $100,000 or more in Colorado sales in the prior or current calendar year have economic nexus under CRS § 39-26-102(3) and must collect state sales tax. Home rule municipality thresholds vary.
Foreign Qualification
Out-of-state entities transacting business in Colorado must file a Statement of Foreign Entity Authority with the Secretary of State under CRS § 7-90-804. The filing fee is $100. Once registered, foreign entities must file the annual periodic report on the same schedule as domestic entities.
Colorado Employer Obligations
Colorado employers must withhold state income tax (4.4%) and register with the Colorado Department of Revenue and the Colorado Department of Labor and Employment. Colorado has a state-administered paid family and medical leave program — FAMLI (CRS § 8-13.3-504) — that went into effect January 1, 2023. Employers must collect and remit FAMLI premiums quarterly; the 2025 total premium rate is 0.9% of wages.
Key Deadlines
- Periodic Report: Anniversary month. Fee: $10. Delinquent after 2 months. Dissolved after 5 months.
- Corporate Income Tax (Form DR 0112): April 15 (calendar year).
- FAMLI Premium: Quarterly, by end of month following quarter end.
How Compliance Singularity Handles Colorado
Compliance Singularity tracks your Colorado anniversary date and files the periodic report through the SCORE system automatically. Given the $10 fee and simple form, the filing takes minutes — the AI agent completes it fully automatically. Colorado income tax and FAMLI obligations are calendared and monitored against your payroll and revenue data. For multi-jurisdiction Colorado sales tax, the system detects home rule municipality exposure and flags those for separate local registration.