What Is an LLC in Colorado?
A limited liability company is a business entity formed under state law that shields its owners — known as members — from personal liability for the company’s debts while allowing flexible internal governance and pass-through federal tax treatment. Colorado LLCs are governed by the Colorado Limited Liability Company Act (C.R.S. § 7-80-101 et seq.), which is supplemented by the Colorado Corporations and Associations Act (C.R.S. § 7-90-101 et seq.) for filing procedures, naming rules, and registered agent requirements.
Members of a Colorado LLC are generally not personally liable for the company’s obligations beyond their investment in the business. An LLC may be managed directly by its members or by one or more designated managers, as declared in the articles of organization. Under C.R.S. § 7-80-401, decisions are made by a majority of the members or, if management is vested in managers, by a majority of the managers. For federal income tax purposes, a single-member LLC is treated as a disregarded entity, and a multi-member LLC is taxed as a partnership by default, though any LLC may elect corporate taxation by filing IRS Form 8832.
Colorado does not impose a franchise tax or entity-level income tax on LLCs. The state does, however, require every LLC to file an annual periodic report with the Secretary of State and, if the LLC sells taxable goods, to register for a state sales tax license.
Colorado LLC Name Search
The name of a Colorado LLC must be distinguishable in the Secretary of State’s records from every other entity name and every reserved name currently on file. Under C.R.S. § 7-90-601, the name must contain one of the following designators: “limited liability company,” “ltd. liability company,” “limited liability co.,” “ltd. liability co.,” “limited,” “L.L.C.,” “LLC,” or “Ltd.” An entity name may not contain any term whose inclusion would violate another Colorado statute, and the word “cooperative” is restricted to entities organized or operated on a cooperative basis.
Distinguishability in Colorado is determined by comparing the proposed name against all existing records. Differences in capitalization, periods, commas, underscores, and apostrophes alone will not make a name distinguishable; however, the use of different designator types, such as “LLC” versus “Limited Liability Company,” or the addition of articles of speech or spacing differences can create a distinguishable name. The Secretary of State provides two online tools: the name availability search, which confirms whether a specific name is available, and the business database search, which displays entities with similar names.
Name Reservation: An organizer may reserve an available name for 120 days by filing a Statement of Reservation of Name under C.R.S. § 7-90-602. The filing fee is $25, and the reservation may be renewed for successive 120-day periods at the same cost. A reserved name may also be transferred to another person for a $25 fee.
Note: Passing an online name search does not guarantee that the Secretary of State will accept the name when the articles of organization are filed. Final determination occurs at the time of filing.
Choosing an LLC Registered Agent in Colorado
Every LLC formed in Colorado must continuously maintain a registered agent with a physical street address in the state. Under C.R.S. § 7-90-701, the registered agent serves as the LLC’s official point of contact for receiving service of process, legal notices, and government correspondence.
Colorado allows three categories of registered agents. An individual agent must be at least eighteen years old and must have a primary residence or usual place of business in Colorado. Effective July 1, 2025, individual agents must also hold a current, valid Colorado driver’s license or identification card or verify their Colorado residency through the Secretary of State’s alternative address verification process. An entity agent must be a domestic entity or a foreign entity authorized to transact business in Colorado, must be in good standing, and must have a usual place of business in the state. An LLC may serve as its own registered agent, provided it is in good standing and has a usual place of business in Colorado.
The registered office must be a physical street address where the agent can accept documents in person during normal business hours. Commercial mailboxes and P.O. Box addresses are not permitted. The articles of organization must contain a statement that the registered agent has consented to the appointment, as required by C.R.S. § 7-90-701(3). Failure to maintain a registered agent places the LLC at risk of losing good standing, becoming delinquent, and being unable to bring lawsuits in Colorado courts.
LLC Filing Requirements in Colorado
A Colorado LLC is formed by filing articles of organization with the Secretary of State. Under C.R.S. § 7-80-203, one or more persons may organize an LLC, and the formation document must meet the content requirements of C.R.S. § 7-80-204. The articles of organization must state:
- The LLC’s name, including a required designator
- The principal office street address (must be a physical address, not a P.O. Box)
- The registered agent’s name and street address in Colorado
- The name and mailing address of each person forming the LLC
- Whether management is vested in members or in one or more managers
- A statement that there is at least one member of the LLC
- Any optional additional provisions the organizer wishes to include
Colorado does not offer a paper form for LLC articles of organization; the filing is completed entirely online. The organizer may also specify a delayed effective date of up to 90 days from the filing date; otherwise, the LLC’s existence begins immediately upon the Secretary of State’s acceptance of the document.
- Online: File through the Colorado Secretary of State’s online filing system. No account creation is required before filing. The filing fee is $50. Filing instructions are available as a PDF checklist.
- By Mail or In Person: Paper filing is not available for articles of organization. All LLC formation documents must be filed electronically.
- Expedited Processing: The Secretary of State offers expedited service for an additional $150 fee, with fulfillment within three business days.
- Periodic Report: Every Colorado LLC must file an annual periodic report with the Secretary of State under C.R.S. § 7-90-501. The report is due during the LLC’s anniversary month, the calendar month in which the articles of organization became effective, with a filing window that opens two months before and closes two months after the anniversary month. The periodic report fee is $25, with a $50 late penalty for reports filed after the window. Failure to file results in the LLC’s status changing to “delinquent.”
Note: The Secretary of State’s office is located at 1700 Broadway, Suite 550, Denver, CO 80290 and can be reached by phone at (303) 894-2200.
How Much Does it Cost to Create an LLC in Colorado?
| Cost | Mandatory or Optional | Amount | When It Applies | Official Source |
| Articles of Organization filing fee | Mandatory | $50 | At formation | Colorado Secretary of State fee schedule |
| Name Reservation | Optional | $25 | Before formation, if reserving a name for 120 days | Colorado Secretary of State fee schedule |
| Expedited Processing | Optional | $150 | At formation, if expedited service is requested | Colorado Secretary of State fee schedule |
| Annual Periodic Report | Mandatory | $25 | Annually, during the anniversary month filing window | Colorado Secretary of State periodic report FAQ |
| Periodic Report Late Penalty | Conditional | $50 | If the report is filed after the filing window | Colorado Secretary of State fee schedule |
| Sales Tax License (Form CR 0100) | Conditional | Varies | If the LLC sells taxable goods | Colorado Department of Revenue |
| Registered Agent (third-party) | Optional | Varies | If the LLC hires a professional registered agent | — |
| Statement of Change (registered agent, principal address) | Conditional | $10 | If changes are needed after formation | Colorado Secretary of State fee schedule |
| Certificate of Good Standing | Optional | Free (online) | As needed for banks, lenders, or foreign registration | Colorado Secretary of State fee schedule |
LLC Operating Agreement in Colorado
Colorado does not expressly require an LLC to adopt a written operating agreement, but C.R.S. § 7-80-108 defines it broadly as “any agreement of all of the members as to the affairs of a limited liability company and the conduct of its business,” and the statute gives it sweeping authority. An operating agreement may be oral or written, may be entered into before, after, or at the time of filing the articles of organization, and is not filed with the Secretary of State—it is an internal governance document retained by the LLC and its members.
The statute provides that an operating agreement governs the rights, duties, limitations, and relations among managers, members, assignees, and the LLC itself, and its provisions “shall control over any provision of this article to the contrary” except for certain non-waivable protections. Under C.R.S. § 7-80-108(4), it is “the intent of this article to give the maximum effect to the principle of freedom of contract and to the enforceability of operating agreements.”
An operating agreement may not eliminate the obligation of good faith and fair dealing under C.R.S. § 7-80-404(3), and it may not unreasonably restrict members’ and managers’ rights to information under C.R.S. § 7-80-408. Beyond those guardrails, the agreement can address management structure, capital contributions, profit-and-loss allocations, transfer of membership interests, admission and withdrawal of members, and dissolution procedures.
In the absence of an operating agreement, Colorado’s statutory defaults apply: the LLC is managed by a majority vote of either the members or the managers (depending on the designation in the articles), and the statute does not prescribe a specific default profit-sharing formula, leaving members to the general principle of equal sharing unless otherwise agreed. A single-member LLC benefits from adopting a written operating agreement because it reinforces the legal separation between the member’s personal assets and the LLC’s property, a consideration that can be important in maintaining limited liability protection.
How to Get an EIN for an LLC in Colorado
A federal Employer Identification Number is a nine-digit number issued by the Internal Revenue Service that identifies the LLC for tax purposes. Any LLC that has employees, files excise tax returns, or withholds taxes on income paid to a nonresident alien must obtain an EIN. A single-member LLC without employees is not strictly required to have one, but most banks require an EIN to open a business account, and obtaining one is strongly recommended.
The fastest method is the IRS EIN Online Application, which issues the number immediately upon completion. The online application is available Monday through Friday, 7:00 a.m. to 10:00 p.m. Eastern Time. The applicant must have a valid Taxpayer Identification Number (SSN or ITIN), and the LLC must be located in the United States or a U.S. territory.
Alternatively, the organizer may complete IRS Form SS-4 and submit it by fax (with an expected response time of approximately 4 business days) or by mail (with processing taking approximately 4 to 5 weeks). The application requires the name and Taxpayer Identification Number of the LLC’s responsible party, the individual who controls, manages, or directs the LLC, and the disposition of its funds and assets.
There is no fee to apply for an EIN.
Registering for State Taxes in Colorado
Colorado does not impose a franchise tax, gross receipts tax, or entity-level income tax on LLCs. A default pass-through LLC owes no state-level business tax on its own; instead, the LLC’s income flows through to its members, who report it on their individual Colorado income tax returns. The Colorado Department of Revenue treats an LLC’s state income tax filing in the same manner as its federal filing—a disregarded entity reports on the member’s return, a partnership-taxed LLC files a Colorado partnership return, and an LLC that has elected C-corporation treatment files a Colorado corporate income tax return.
If the LLC sells tangible personal property in Colorado, it must obtain a sales tax license by completing Form CR 0100 through the Colorado Department of Revenue. Most Colorado sales tax licenses are valid for two years and expire at the end of each odd-numbered year. Services are generally not subject to Colorado sales tax, but businesses should confirm whether their specific activities are taxable. Businesses in home-rule cities may also need a separate local license from the municipality.
| Tax Type | Agency | Registration Method | Fee |
| State Income Tax (pass-through to members) | Colorado Department of Revenue | Filed with individual or entity return via Revenue Online | None for registration |
| Sales and Use Tax License | Colorado Department of Revenue | Form CR 0100 or MyBizColorado | Varies by license type |
| Wage Withholding Tax Account | Colorado Department of Revenue | Form CR 0100 or MyBizColorado | Free |
Note: The combined Form CR 0100 serves as the application for both a sales tax license and a wage withholding tax account. Employers with a Colorado business location can also register through MyBizColorado, the state’s unified business registration portal.
Registering as an Employer in Colorado
An LLC that hires employees in Colorado must register with several state agencies for unemployment insurance, income tax withholding, workers’ compensation coverage, and new hire reporting. Each obligation arises as soon as the LLC begins paying wages to one or more employees.
- Unemployment Insurance: The Colorado Division of Unemployment Insurance requires employers paying wages in the state to register for an unemployment insurance premium account. Employers can register online through the MyBizColorado portal, which connects the registration to the Colorado Department of Labor and Employment. The division can be reached at (303) 318-9100 or toll-free at (800) 480-8299 for general assistance.
- Income Tax Withholding: Colorado employers must register as a withholding tax agent with the Colorado Department of Revenue by completing Form CR 0100. There is no fee for the withholding account, and there is no renewal requirement. In-state businesses may use MyBizColorado to complete this registration alongside their unemployment insurance registration.
- Workers’ Compensation Insurance: Under Colorado law, all employers with one or more employees must carry workers’ compensation insurance, regardless of whether employees are part-time, full-time, or family members. Employers purchase coverage through a commercial insurance carrier or, if qualified, through a self-insurance program approved by the Division of Workers’ Compensation. Failure to carry coverage can result in fines of up to $500 per day the business is uninsured.
- New Hire Reporting: Federal and Colorado law require employers to report each new hire within 20 calendar days of hire. Reports are submitted online through the Colorado State Directory of New Hires.
| Obligation | Agency | Registration Method |
| Unemployment Insurance | Colorado Division of Unemployment Insurance (CDLE) | MyBizColorado |
| Income Tax Withholding | Colorado Department of Revenue | Form CR 0100 or MyBizColorado |
| Workers’ Compensation Insurance | Division of Workers’ Compensation (CDLE) | Through a commercial insurance carrier |
| New Hire Reporting | Colorado State Directory of New Hires | newhire.state.co.us |
The LLC must also comply with federal employer obligations, including filing IRS Form 941 (quarterly payroll tax return), paying FUTA (Federal Unemployment Tax Act) taxes, and completing Form I-9 (Employment Eligibility Verification) for each new employee.