How to form an LLC in Colorado
A $50 filing fee and an online-only Secretary of State. The cheapest flagship state in the country — and one of the most pleasant to work with.
Contents 7 sections
olorado is one of the few states where forming an LLC feels more like signing up for a website than filing a legal document. The Colorado Secretary of State accepts filings only online; paper is not an option; and the $50 fee is among the lowest in the country for a business-friendly state. Most founders are done in fifteen minutes.
If you live and work in Colorado, this is almost certainly the right state in which to form. The question of whether to instead register in Delaware or Wyoming comes up often; for a single-member LLC with Colorado customers, employees, or real estate, the answer is no. Forming out-of-state means you still have to register as a foreign LLC in Colorado, paying two sets of fees and two sets of registered-agent bills; with no tax or liability benefit to show for it.
The filing, step by step
Colorado's Articles of Organization are filed through the SOS business filings portal. You'll need:
Work from the Colorado Secretary of State business services portal; Colorado's online system is one of the faster state portals in the country and typically clears filings within a business day. For post-formation tax registration, MyBizColorado walks you through sales tax, wage withholding, and unemployment insurance accounts in one sitting.
- An entity name ending in "Limited Liability Company," "LLC," or "L.L.C." Run a name availability search first; the state does not hold names, so it's a race.
- A registered agent with a physical Colorado street address (P.O. boxes don't count). You can serve as your own agent if you live in-state, but the address becomes public.
- A principal office address, also public.
- The name and address of at least one person forming the LLC. This doesn't have to be a member; it can be your attorney or formation service.
The filing is approved immediately on submission. Unlike most states, Colorado does not mail a stamped certificate; your proof of existence is a downloadable PDF from the SOS website. Save it.
After you file
Colorado has no publication requirement, no initial report, and no franchise tax. Three post-formation items actually matter:
- Get an EIN. Free, instant, from the IRS online application. Do this the same day you file. Banks require it.
- File the Beneficial Ownership Information report with FinCEN. Federal, not state, and due within 30 days of formation for new entities. Enforcement has been litigated, so check the current status at fincen.gov before you file; but assume it applies.
- Open a bank account in the LLC's name. Do not comingle. This is the single most important thing you can do to preserve the liability shield that the LLC exists to provide.
Colorado's $50 formation fee and $10 periodic report are the cheapest numbers in the Rockies. That cheapness is a real advantage only if you are physically operating in Colorado; the 4.4% flat tax still catches you either way.
Ongoing compliance
Colorado's annual "Periodic Report" is $10, due in the anniversary month of formation. It's the lowest annual fee in the country. Miss it and the state marks your LLC as "noncompliant" after two months; a further two months and it's "delinquent," which starts to endanger the liability shield. Set a calendar reminder.
Colorado levies a flat 4.4% corporate income tax on LLCs that elect C-Corp status, and imposes pass-through tax on the members for default LLC treatment. There is no separate franchise tax. Most single-member LLCs will file only a Schedule C with their personal federal return; Colorado taxes follow.
When Colorado is the wrong state
Two cases:
- You plan to raise institutional venture capital. VCs generally require a Delaware C-Corp, not a Colorado LLC. Forming in Colorado first and converting later is possible but not free; if VC is already on the roadmap, form a Delaware C-Corp and register as a foreign entity in Colorado from day one.
- You will operate in multiple states with significant revenue in each. The calculus is more complex; a holding-company structure may be warranted. Talk to a tax attorney before forming.
For everyone else; consultants, e-commerce sellers, restaurants, contractors; Colorado is a fine, cheap, modern place to form an LLC.
Fees at a glance
| Item | Cost |
|---|---|
| Articles of Organization | $50 |
| Periodic Report (annual) | $10 |
| Name reservation (optional) | $25 |
| Registered agent change | $10 |
| Foreign entity registration | $100 |
Fees are from the Colorado SOS fee schedule and current as of this writing.
Post-formation: the first-year checklist
Formation is step one. The obligations that actually generate state and federal trouble if missed sit in the first twelve months after the Articles clear. Plan for:
- EIN. Apply at the IRS EIN portal. Free, instant if you have a US SSN or ITIN.
- Operating agreement. Not filed with the state, but every state presumes one exists for dispute resolution. A single-member LLC still benefits from a written one; banks routinely ask for it when opening a business account.
- Business bank account. Opens only after the state filing clears and the EIN is issued. Commingling personal and business funds is the fastest way to expose yourself to a piercing-the-corporate-veil argument; the SBA's guide to business structures covers the basics of why separation matters.
- BOI report. The FinCEN Beneficial Ownership Information reporting regime requires most new LLCs to report beneficial owners within 30 days of formation. Penalties are serious; the filing is free.
- State tax registration. Sales tax, withholding, unemployment insurance: each is a separate account in most states. Register early so you are not back-filing returns.
Additional primary sources
- Colorado Secretary of State: https://www.sos.state.co.us/pubs/business/main.html
- MyBizColorado: https://mybiz.colorado.gov/
- IRS LLC guidance: https://www.irs.gov/businesses/small-businesses-self-employed/limited-liability-company-llc