How to Form an LLC in Denver, CO — 2026 Filing Guide

Required?

Yes

Who can serve

Colorado resident individual with a physical CO street address (no PO boxes), or a business entity authorized to act as registered agent in Colorado

Can I serve myself?

Yes

Commercial RA cost

~$100/yr

Colorado Articles of Organization do not require member names on the public filing — only the registered agent name and address are publicly disclosed. Using a commercial RA service keeps your personal address off the CO SOS public record and ensures reliable receipt of Periodic Report reminders, legal process, and state mail.

Renewing or switching? Compare standalone registered agent services — Northwest, Harbor Compliance, Registered Agents Inc., InCorp, and more.

1. Search for name availability through the Colorado SOS Use the Colorado Secretary of State's online filing system at sos.colorado.gov to confirm your desired LLC name is available and not confusingly similar to an existing CO entity. The name must include a valid LLC designator under C.R.S. § 7-90-601. Optional: reserve the name for 120 days ($25) while you prepare documents.
2. Appoint a Colorado registered agent Designate a registered agent with a physical Colorado street address (no PO boxes) available during normal business hours to accept service of process. Colorado residents may self-serve as RA. Out-of-state owners and non-CO-resident operators typically use a commercial RA service ($50–$150/yr). The RA name and address appear on the public CO SOS record.
3. File Articles of Organization ($50) with the CO Secretary of State File online at sos.colorado.gov. The Articles require the LLC name, principal office address, registered agent name and CO street address, and organizer signature. Pay the $50 filing fee online. Standard online processing: 1–2 business days. Colorado's online filing system is efficient and easy to navigate — processing is much faster than states like New York (6+ weeks) or Illinois (10 days).
4. Draft an Operating Agreement Colorado's LLC Act (C.R.S. § 7-80-108) authorizes members to adopt an Operating Agreement. While not filed with the state, an OA is strongly recommended for all multi-member Denver LLCs. The OA governs member ownership percentages, voting rights, profit/loss allocations, management authority, capital contributions, and dissolution procedures.
5. Obtain an EIN from the IRS After the Articles of Organization are approved, apply for an EIN at irs.gov/ein. The online application takes under 15 minutes and provides the EIN immediately. Print the CP 575 EIN Confirmation Letter for bank account opening and city license registration.
6. Obtain a Denver Business License Most businesses operating within the City and County of Denver must obtain a Business License through the Denver Department of Finance, Treasury Division. Apply at denvergov.org/licenses. License type and fee depend on business activity — general retail/service licenses run $25–$100/yr. Home occupation licenses are also available for Denver residents operating from home. Specialized regulated businesses (food service, alcohol, childcare) require additional permits from relevant departments.
7. Register for Colorado sales tax (if selling taxable goods or services) If your Denver LLC sells taxable goods or services, register with the Colorado Department of Revenue at colorado.gov/revenue for a Colorado Sales Tax License. Denver's combined sales tax rate is approximately 8.81% (state 2.9% + Denver city 4.31% + RTD 1.0% + SCFD 0.1%). Businesses must collect and remit the full combined rate on taxable Denver sales.
8. File the CO Periodic Report in your anniversary month ($10) IMPORTANT: Colorado calls this the 'Periodic Report' — not 'Annual Report.' Colorado LLCs must file a Periodic Report with the Secretary of State each year in the LLC's anniversary month. Fee: $10 — the lowest recurring annual report fee in the United States. File online at sos.colorado.gov. Failure to file results in administrative dissolution of the LLC.
9. Open a business bank account Bring your EIN Confirmation Letter, Articles of Organization, and Operating Agreement to the bank. Denver-area banks (Wells Fargo, Chase, US Bank, FirstBank, Elevations Credit Union) require an EIN and formation documents. A separate business account is the single most important step for maintaining the LLC's liability protection.

Colorado Revised Statutes, Title 7, Article 80 (Limited Liability Companies); Articles of Organization: C.R.S. § 7-80-204; Name requirements: C.R.S. § 7-90-601; Registered agent: C.R.S. § 7-90-701; Periodic Report: C.R.S. § 7-90-301; Operating Agreement: C.R.S. § 7-80-108; Colorado income tax: C.R.S. § 39-22-104 (4.4% flat rate under HB 22-1406); Colorado sales tax: C.R.S. § 39-26-101 et seq.; Denver Business License: Denver Revised Municipal Code; IRS guidance on single-member LLC disregarded entity treatment.

Direct filing portal: https://sos.colorado.gov/

Formation context

Who should form in Colorado?

Recommended for

Denver-area entrepreneurs, contractors, and small business owners looking for one of the lowest-cost LLC formation and maintenance structures in any major US city; Colorado businesses in technology, real estate, outdoor recreation, healthcare, and professional services headquartered in the Denver metro; Cost-conscious founders who want to compare CO vs. WY formation costs and understand the $10/yr Periodic Report advantage over Wyoming's $60/yr Annual License Tax

Tax treatment (default)

Pass-through by default at the federal level: single-member LLCs are disregarded entities (Schedule C); multi-member LLCs are partnerships (Form 1065). Colorado taxes pass-through LLC income at the individual member level via the flat 4.4% state income tax rate. Colorado has no franchise tax on LLCs. Denver's combined sales tax is approximately 8.81% (state 2.9% + city/district add-ons).

For businesses physically operating in Denver, forming directly in Colorado ($50 + $10/yr Periodic Report) avoids the dual-state cost of Wyoming or Delaware formation plus CO foreign qualification. Wyoming's charging-order protection is meaningful for holding structures — but for an operating Denver business, Colorado's $10/yr Periodic Report makes it the clear cost winner. See the CO vs. WY LLC Formation guide for the full comparison.

No publication requirement in Colorado — unlike New York or Nebraska, you do not need to publish notice in a newspaper after filing.

FAQ

Common Colorado (Denver) LLC formation questions

Still deciding between an LLC, sole proprietorship, S-Corp, or C-Corp? Our entity-type comparison breaks down formation cost, tax treatment, liability shield, and compliance complexity for all four structures side by side.

Once your LLC clears ~$80K in annual net profit, an S-Corp election (IRS Form 2553) typically saves $5,000–$15,000/year in self-employment taxes by splitting owner income into a W-2 salary + tax-free distributions. The election is free — Form 2553 has no IRS filing fee. The key decision factors: your net income level, a defensible reasonable-compensation salary, and the 75-day Form 2553 filing window after LLC formation.

Already operating as a sole proprietor, or wondering whether a cheap county DBA filing ($10–$100) is enough instead of forming an LLC? A DBA lets you operate under a trade name — but provides zero liability protection. Our DBA vs LLC comparison breaks down exactly when a DBA is sufficient and when you need a state LLC filing.

Missing your annual report deadline triggers late fees and — if left long enough — administrative dissolution, which voids your LLC's liability shield until reinstated. Know your Colorado deadline, fee, and the consequences of missing it.

Also see the LLC annual report requirements hub for state-by-state deadlines, fees, late penalties, and reinstatement rules.

If your LLC opens an office, hires employees, or regularly does business in another state, you must foreign-qualify there — or face fines, back taxes, and loss of standing to sue. Our foreign qualification guide covers when you need it, how to file a Certificate of Authority, and what it costs.

Your Articles of Organization are filed — now make your LLC operational. Four actions every new LLC owner needs to take:

Formation gets your LLC into existence; contracts, trademark protection, operating agreement review, and vendor-document review keep it usable. Compare subscription and per-document legal platforms before you rely on a template or pay a local attorney retainer.

Commingling personal and business funds is the #1 way LLC owners lose their liability shield. A separate business account — in your LLC's legal name, with your EIN — is the foundational act of corporate formality. Mercury, Novo, Bluevine, Relay, and Found open same-day with no monthly fees. Compare online banks vs. Chase and Bank of America.

How you pay yourself depends on your LLC's tax classification — not what you call the transfer. A disregarded single-member LLC pays via owner draw with SE tax on all net profit. An S-Corp-elected LLC splits income between a W-2 salary (FICA applies) and tax-free distributions. Getting this wrong triggers IRS audit risk and SE-tax errors.

Single-member LLCs file Schedule C with their personal Form 1040 (due April 15). Multi-member LLCs file Form 1065 by March 15. S-Corp-elected LLCs file Form 1120-S by March 15. Know your form, your deadline, and the common deductions — home office, vehicle, retirement contributions, and startup costs — before your first April filing.