Kept simple · Colorado
3 Best LLC Services in Colorado (2026): Simply Ranked
At a glance
- Filing fee
- $50, paid once
- Afterward
- $25 yearly
- Registered agent
- Required: yes
- Our pick
- Colorado Registered Agent.co, CO Registered Agent.org then Mainstay Filing
Colorado, ranked
Why this order? The checks are explained here.1. Colorado Registered Agent.co: best for a one-state LLC
Year one $199. Later years $99
Colorado Registered Agent.co comes first because $199 forms the LLC, and the agent renews at $99.
Three years cost less here than at Mainstay Filing, and cost weighs most.
The periodic report is not included. You file it.
Includes
- Colorado formation filing
- Agent for year one
Good
- A free agent year at the start
- $199 to form the LLC
- Agent renews at $99
Against
- The periodic report is a task you keep
- The EIN application costs $99 extra
2. CO Registered Agent.org: best for another local option
Year one $199. Later years $99
CO Registered Agent.org ranks second. $199 forms the LLC, and the agent renews at $99.
The periodic report is not included. You file it.
Its prices match Colorado Registered Agent.co exactly. The order between them is close.
Includes
- Colorado formation filing
- Agent for year one
Good
- A free agent year at the start
- Agent renews at $99
- $199 to form the LLC
Against
- The periodic report is a task you keep
- The EIN application costs $99 extra
3. Mainstay Filing: best for handing off upkeep
$199 a year. $50 to the state
Mainstay Filing takes third place because the periodic report is filed within the $199 annual price, along with formation and the registered agent.
It ranks lower because three years cost $200 more than Colorado Registered Agent.co, and cost has the largest weight.
The periodic report is filed for you. Colorado still charges $25, billed at cost.
Includes
- LLC formation, filed
- Registered agent for a year
- Periodic report prepared and filed
- EIN application
- State fees at cost
Good
- Year two: $199
- No fee for the EIN application
- $199 a year covers filing, agent and report
Against
- Renews $100 higher than Colorado Registered Agent.co
Side by side
| # | Company | Start | Renewal | Three years | Includes | |
|---|---|---|---|---|---|---|
| 1 | Colorado Registered Agent.co | $199 | $99/yr | $397 | colorado formation filing; agent for year one | Go to Colorado Registered Agent.coPartner link. We may earn money if you buy. |
| 2 | CO Registered Agent.org | $199 | $99/yr | $397 | colorado formation filing; agent for year one | Go to CO Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | Mainstay Filing | $199 | $199/yr | $597 | LLC formation, filed; registered agent for a year; periodic report prepared and filed | Go to Mainstay FilingPartner link. We may earn money if you buy. |
Key questions
What does an LLC cost to form here?
The state charges $50. A service adds $199 in year one.
With the recurring report, state fees reach $100 in three years. from coloradosos.gov, October 2026, kept short
What do I file?
You submit one filing, the Articles of Organization, to the Colorado Secretary of State.
from coloradosos.gov, October 2026, kept short
Must the LLC name a registered agent?
Every LLC must name a registered agent with an in-state street address.
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.
from sos.state.co.us, October 2026, kept short
What comes after formation?
The periodic report comes each year and costs $25. In the state's words the filing is due last day of the entity's anniversary month. Note it early.
A late filing adds $50.
from coloradosos.gov, October 2026, kept short
Can I file it myself?
Yes. Filing yourself costs the state's fees only: $100 over three years.
A service adds $397 to $597 over three years. With Mainstay Filing the reports are included.
Why this order?
Colorado Registered Agent.co scores best on three-year cost, which is 38% of the score.
Two checks carry most of the weight: three-year cost (38%) and work included (27%).
Mainstay Filing runs $200 higher over three years than Colorado Registered Agent.co's $397.
What Colorado requires to form an LLC
| Item | Rule or amount | Confirm |
|---|---|---|
| LLC filing fee | $50 | from coloradosos.gov, October 2026, kept short |
| Registered agent | Required: yes | from sos.state.co.us, October 2026, kept short |
| Periodic report | $25 every year | from coloradosos.gov, October 2026, kept short |
| Three-year state total | $100 | The rows above, added |
Questions
Is the EIN application included?
Only Mainstay Filing builds the EIN application into its price. Colorado Registered Agent.co bills $99 for it and CO Registered Agent.org bills $99 for it.
What if the report is late?
Colorado adds $50.
What are the three-year totals?
Colorado Registered Agent.co is $397, while CO Registered Agent.org is $397, while Mainstay Filing is $597, services only.
Where do the figures come from?
State fees come from Colorado's official documents. Service prices come from each company's price page. Both are dated here.
Must I use a service?
No law requires a service. It is a paid convenience.
Which LLC service should I use in Colorado?
Colorado Registered Agent.co, because it opens at $199, first agent year included, and renews at $99. Then CO Registered Agent.org and Mainstay Filing.
References
- Charter Simple keeps Colorado Secretary of State on file from sos.state.co.us, confirmed August 2026, and nothing more
- Charter Simple keeps Colorado Secretary of State on file from sos.state.co.us, confirmed August 2026, and nothing more
- Charter Simple keeps Colorado yearly filing: Periodic report on file from coloradosos.gov, confirmed October 2026, and nothing more
- Charter Simple keeps Colorado report due date on file from colorado.public.law, confirmed August 2026, and nothing more
- Charter Simple keeps Colo on file from sos.state.co.us, confirmed August 2026, and nothing more
- Charter Simple keeps Colorado formation fee: Filing fee on file from coloradosos.gov, confirmed October 2026, and nothing more
- Colorado Registered Agent.co pricing page, read November 13, 2026
- CO Registered Agent.org pricing page, read November 13, 2026
- Mainstay Filing Colorado service page, read November 13, 2026