How to Form a Colorado PLLC: Filing, Agent, and Operating Agreement

To form a Colorado Professional Limited Liability Company (PLLC), you file Articles of Organization with the Colorado Secretary of State for a $50 online filing fee, but only if your occupation is one of the professions listed under Title 12 of the Colorado Revised Statutes and every member of the entity holds an active Colorado license in that profession. The rest is process: naming a registered agent, getting a federal tax ID, putting an operating agreement in place, and keeping each member’s license current so the entity can legally practice.

Confirm Your Profession Qualifies

A PLLC exists solely to deliver professional services, and Colorado limits the structure to occupations named in Title 12. Eligible professions include:

  • Accountants
  • Attorneys
  • Chiropractors
  • Dentists
  • Medical practitioners
  • Optometrists
  • Physical therapists
  • Podiatrists
  • Psychologists
  • Social workers
  • Marriage and family therapists
  • Professional counselors
  • Addiction counselors

If your work isn’t on that list, form a standard LLC instead. Every member of a PLLC must hold an active license in the profession the entity was organized to practice. Some fields layer on their own ownership rules. Medical PLLCs, for example, require all shareholders to be physicians or physician assistants licensed by the state board, with physician members holding majority ownership when physician assistants are involved.1Justia. Colorado Code 12-36-134 – Professional Service Corporations, Limited Liability Companies, and Registered Limited Liability Partnerships for the Practice of Medicine Check your specific board’s requirements before drafting anything.

File the Articles of Organization

Formation is official once the Secretary of State accepts your Articles of Organization. The online filing fee is $50.2Colorado Secretary of State. Business Organizations Fee Schedule The document has to include:

  • An entity name containing “limited liability company” or an accepted abbreviation. Professional entities may also use “P.L.L.C.” or “PLLC.” Some professions carry additional naming rules under Title 12, so verify yours before filing.3Colorado Secretary of State. Professional Service Companies
  • The street address of the PLLC’s principal office.
  • The name and address of a registered agent.
  • The name and mailing address of each organizer.
  • Whether the PLLC will be managed by its members or by appointed managers.4FindLaw. Colorado Code 7-80-204 – Articles of Organization

You don’t need to list the specific professional services on the form. The Secretary of State’s online system walks through each required field.

Registered Agent Rules

Every Colorado PLLC needs a registered agent with a physical Colorado street address where documents can be delivered in person during business hours. A P.O. box doesn’t qualify. The agent can be an individual who is at least 18, holds a valid Colorado driver’s license or state ID, and lives or works in the state. It can also be another business entity registered and in good standing with the Secretary of State.5Colorado Secretary of State. Registered Agent Requirements

If an individual agent has no Colorado license or state ID, the Secretary of State runs an alternative verification: a passcode is mailed to the agent’s physical address and expires after 45 days.5Colorado Secretary of State. Registered Agent Requirements

Get a Federal EIN

After the Articles are accepted, apply to the IRS for a federal Employer Identification Number. You’ll need it to open a business bank account, file taxes, and hire employees. Any PLLC with more than one member or plans to hire needs one. The fastest route is the online application at IRS.gov, which issues the number immediately and is available Monday through Friday, 7 a.m. to 10 p.m. Eastern Time. Fax and mail applications work too but take days to weeks.6Internal Revenue Service. Get an Employer Identification Number

One federal filing you can skip for now: the Beneficial Ownership Information report. Under a March 2025 FinCEN interim final rule, entities formed in the United States are exempt from BOI reporting. Only foreign-formed companies registered to do business in a U.S. state still file. U.S. persons connected to domestic entities are also exempt from providing their beneficial ownership information.7FinCEN.gov. Beneficial Ownership Information Reporting

Adopt an Operating Agreement

Colorado does not require an LLC to adopt a written operating agreement, but for a PLLC skipping one is a mistake. The statute recognizes an operating agreement as binding on the company and its members once adopted, and it can take effect as of the formation date.8Justia. Colorado Code 7-80-108 – Operating Agreement

A PLLC agreement should address:

  • How profits and losses are allocated, especially where members contribute different capital or generate different revenue.
  • Whether the members share management equally or whether appointed managers handle day-to-day decisions. Colorado allows PLLCs to appoint non-member managers, which gives the entity room to bring in operational talent without extending ownership.
  • What happens if a member’s professional license is suspended, revoked, or lapses. This is the provision that distinguishes a PLLC agreement from any other LLC’s. Without it, a single license problem can freeze the business.
  • How a departing member’s interest is valued and bought out.
  • Whether internal disputes go to mediation, arbitration, or court.

Whatever management structure you pick, spell it out so there is no ambiguity about who can bind the PLLC.

Keep Every Member’s License Active

A PLLC can only practice through its licensed members, so license compliance is an ongoing formation requirement, not a one-time check. Colorado licenses expire on schedules set by the Director of the Division of Professions and Occupations, and each profession sets its own continuing education or competency rules.9Justia. Colorado Code 12-20-202 – Licenses, Certifications, and Registrations

A member who misses a renewal has a 60-day grace period. After that the license is treated as expired, the member cannot legally practice until it is reinstated, and delinquency fees plus any board-specific penalties apply.9Justia. Colorado Code 12-20-202 – Licenses, Certifications, and Registrations For a small PLLC, one lapsed license can halt operations. A shared renewal calendar and a designated compliance point person are worth setting up before the practice opens its doors.

What Comes After Formation

Annual Periodic Report

Every Colorado LLC, including a PLLC, files a Periodic Report each year with the Secretary of State for $25.2Colorado Secretary of State. Business Organizations Fee Schedule The deadline is tied to your assigned periodic report month, shown on the entity’s summary page in the Secretary of State’s online system. The filing window runs from two months before that month to two months after.10Colorado Secretary of State. Periodic Reports Miss it long enough and the entity’s status shifts to noncompliant, then delinquent, and eventually the business name becomes available for anyone else to register.11Colorado Secretary of State. Business FAQs – Delinquency

Taxes

A Colorado PLLC is a pass-through entity for federal and state tax purposes unless it elects corporate taxation. The PLLC itself pays no income tax; each member reports their share on their personal return. Colorado’s flat rate is 4.4% of taxable income for the 2025 tax year, filed in 2026.12Department of Revenue – Taxation. Individual Income Tax FAQ Members also owe federal self-employment tax on their distributive share, covering Social Security (6.2%) and Medicare (1.45%). Multi-member PLLCs file IRS Form 1065 and issue each member a Schedule K-1.

If the PLLC sells taxable goods or services, it needs a Colorado sales tax license, renewed every two years for $16 per physical location.13Department of Revenue – Taxation. Renew Your Sales Tax License Most professional service PLLCs won’t need one.

Hiring Employees

The moment your PLLC has an employee, full-time, part-time, or family, several obligations kick in. Colorado requires workers’ compensation coverage with no size-based exemption; anyone paid for services is presumed to be an employee. Operating without coverage can trigger a cease-and-desist order and daily fines of up to $250 for a first violation, or $250 to $500 per day for repeats, and the state can seek a court order shutting down the business until coverage is in place.14Colorado Department of Labor & Employment. Workers’ Compensation Insurance Requirements15Justia. Colorado Code 8-43-409 – Defaulting Employers

Employers also register for a state unemployment insurance account through the Colorado Department of Labor and Employment’s MyUI Employer+ system. During registration, the physical address cannot be a P.O. box or private residence, and ownership percentages across all owners and officers must total 100%.16Department of Labor & Employment. How to Register a New UI Employer Account in MyUI Employer+ On top of that, you withhold state income tax from wages and file quarterly wage reports with the Department of Revenue.

What the PLLC Actually Shields You From

The PLLC protects members’ personal assets from the business’s general debts and contracts. If the business is sued over an unpaid lease or vendor invoice, creditors reach the PLLC’s assets, not a member’s home or personal accounts.

That shield has a hard limit. Every member remains personally liable for their own professional malpractice or negligence. If a physician in a medical PLLC commits malpractice, the entity does not insulate that physician from the resulting lawsuit. What the structure does protect are the other members, who are generally not personally liable for a colleague’s professional error. Professional liability (malpractice) insurance fills the gap, and some licensing boards effectively require it as a condition of practice.

The shield can also be pierced if members fail to treat the PLLC as a genuinely separate entity. Commingling personal and business funds, skipping annual filings, or operating without an operating agreement all weaken the case that the PLLC is distinct from its owners. Clean books and consistent formalities are what keep the protection intact.