Module 2 · Colorado
Registered Agent in Colorado (2026): a 6-Step Lesson and the 3 Best Agents
Before you begin
Lesson goals
- Why Colorado wants an agent on file
- Who can serve and where
- How to name or change the agent
- Who we would hire as agent
Our graded picks for Colorado
1. Colorado Registered Agent.co: best for a low yearly agent price
Colorado Registered Agent.co gets our top grade for Colorado: a plan built for one state, $99 a year, renewing at $99.
Mainstay Filing costs more over three years, and that hands this service the top spot.
What the price covers
- An in-state office address
- Served documents posted online
Marks in its favor
- A lower yearly cost than the national pick
- $99 a year with no increase
Where it loses points
- Another state means another agent
- Periodic report is not included
2. CO Registered Agent.org: best for another Colorado choice
CO Registered Agent.org is a sound second choice because a plan built for one state, $99 a year, renewing at $99.
On price it is level with Colorado Registered Agent.co.
What the price covers
- An in-state office address
- Served documents posted online
Marks in its favor
- $99 a year with no increase
- A lower yearly cost than the national pick
Where it loses points
- Another state means another agent
- Periodic report is not included
3. Mainstay Filing: best for companies in several states
Next on the report card comes Mainstay Filing, graded third: an agent at $149 a year who can come along when the company adds a state.
Colorado Registered Agent.co is $150 lower across three years, which keeps this one out of first.
What the price covers
- A Colorado street address for the record
- A same-business-day scan of each served paper comes at no charge
- Government mail scanned free, three pieces a year
- Also works for nonprofits, corporations, LPs and LLPs
Marks in its favor
- Covers all fifty states
- $149 a year
Where it loses points
- More expensive by $50 a year
- Reports are not filed on this plan
Our Colorado picks side by side
| # | Service | Annual price | Renewal price | Three-year total | |
|---|---|---|---|---|---|
| 1 | Colorado Registered Agent.co | $99 | $99/yr | $297 | Visit Colorado Registered Agent.coPartner link. We may earn money if you buy. |
| 2 | CO Registered Agent.org | $99 | $99/yr | $297 | Visit CO Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | Mainstay Filing | $149 | $149/yr | $447 | Visit Mainstay FilingPartner link. We may earn money if you buy. |
The steps
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Step
1Understand the requirement
Every LLC must name a registered agent with an in-state street address.
Where this comes from: The official page is sos.state.co.us, last confirmed in October 2026
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Step
2Learn who can do the job
A person 18 or older whose home or usual place of business is in Colorado (since July 1, 2025 the person has to hold a Colorado driver's license or ID or otherwise verify residency), or a business entity in good standing with a usual place of business in Colorado. The agent has to consent. (C.R.S. § 7-90-701)
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Step
3Get the address right
The address has to be a physical address in Colorado, either a home or a usual place of business. P.O. boxes are not accepted.
The agent's address, not your home, appears in the record when you hire a service.
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Step
4Settle who will be the agent
You may serve if you qualify. A professional agent from our list costs $99 to $149 a year.
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Step
5List the agent with the state
A new LLC names its agent in the Articles of Organization sent to the Colorado Secretary of State. An existing LLC that wants a different agent files a change with that same office.
Where this comes from: The official page is coloradosos.gov, last confirmed in October 2026
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Step
6Keep the details up to date
Colorado sees your agent's details through the periodic report ($25, every year, due last day of the entity's anniversary month), and the state's letters about it go to your registered agent.
Where this comes from: The official page is coloradosos.gov, last confirmed in October 2026
The cost of this lesson
| Line | Who you pay | Price |
|---|---|---|
| Hiring an agent | Service company | $99 to $149 a year |
| Renewal | Service company | $99 to $149 a year |
| Periodic report | State office | $25 every year |
Behind the ranking
won on tuition over three years (32% of the grade), with right behind.
Paying Colorado Registered Agent.co for three years adds up to $297, which is $150 below the Mainstay Filing total.
Short answers
Must a Colorado LLC have a registered agent?
Yes. Every LLC must name a registered agent with an in-state street address.
Can I be my own registered agent?
The answer is yes when you satisfy the eligibility and address rules laid out in steps 2 and 3.
Can I change my registered agent later?
You can; an existing LLC sends a change filing to the Colorado Secretary of State, and step 5 walks through it.
What does a registered agent cost in Colorado?
From $99 to $149 a year on this page.
What does the LLC pay the state each year?
Mainly the periodic report, $25 every year.
Which registered agent would you choose?
Colorado Registered Agent.co, CO Registered Agent.org and Mainstay Filing, graded from first to last.
Class references
- Class reference on Colorado Secretary of State: sos.state.co.us (the state's own page), reread in August 2026 for this lesson.
- Class reference on Colorado Secretary of State: sos.state.co.us (the state's own page), reread in August 2026 for this lesson.
- Class reference on Colorado yearly filing: Periodic report, official source: coloradosos.gov (the state's own page), reread in October 2026 for this lesson.
- Class reference on Colorado report due date: colorado.public.law (the state's own page), reread in August 2026 for this lesson.
- Class reference on Colo: sos.state.co.us (the state's own page), reread in August 2026 for this lesson.
- Class reference on Colorado formation fee: Filing fee, official source: coloradosos.gov (the state's own page), reread in October 2026 for this lesson.
- Colorado Registered Agent.co, pricing page, as it appeared on November 13, 2026
- CO Registered Agent.org, pricing page, as it appeared on November 13, 2026
- Mainstay Filing, Colorado service page, as it appeared on November 13, 2026