How to Register a Foreign LLC in Colorado (2026): 4 Steps and the 3 Best Services
Mainstay Filing ($199), Colorado Registered Agent.co ($199) and CO Registered Agent.org ($199) are our 2026 picks, in that order, for registering a foreign LLC in Colorado. After the picks: 4 steps and a $100 state fee.
Company prices as published on November 12, 2026. Every row excludes the $100 state fee.
Registering in Colorado, step by step
Step1
Step 1: Know when registration is required
If your LLC was formed outside Colorado and does business there, it needs a foreign registration first. Operating without it: The penalty can be up to $5,000.
Official source: Source: coloradosos.gov, confirmed October 2026
Step2
Step 2: Name your Colorado registered agent
Every LLC must name a registered agent with an in-state street address. 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.
TipEach of our picks includes the registered agent.
Official source: Source: sos.state.co.us, confirmed October 2026
Step3
Step 3: File Statement of Foreign Entity Authority
This filing, the Statement of Foreign Entity Authority, costs $100 at the Colorado Secretary of State, Business Program.
Official source: Source: coloradosos.gov, confirmed October 2026
Step4
Step 4: Plan for the yearly filing
Expect the periodic report and its $25 fee (once a year, by the end of the second month after your report month).
The cost of this lesson
What
Paid to
Cost
Registration fee
The state
$100
Periodic report
The state
$25
Filing service (optional)
Service company
$199 up front
State fees for three years
The state
$150
Every state figure links to its source under References; service prices come from each company's site.
Why this order
On lesson steps handled, which carries 35%, Mainstay Filing scored above Colorado Registered Agent.co.
Covering several states beat Colorado Registered Agent.co's lower renewal.
Questions students ask
What does it cost to register a foreign LLC in Colorado?
$100 at the state office. Add $199 for a service.
Which form do I file to register?
It is the Statement of Foreign Entity Authority, and it goes to the Colorado Secretary of State, Business Program.
What if the LLC does business there without registering?
The penalty can be up to $5,000.
What is due after registering?
Step 4 covers it: the periodic report for $25.
Which services are in this lesson?
This lesson grades Mainstay Filing ($199), Colorado Registered Agent.co ($199) and CO Registered Agent.org ($199).
Which service should handle the registration?
Mainstay Filing first, then Colorado Registered Agent.co and CO Registered Agent.org; Mainstay Filing leads on lesson steps handled.