3 Best Foreign Registration Services in Colorado (2026) and Why
In 2026, we rank Mainstay Filing ($199), Colorado Registered Agent.co ($199) and CO Registered Agent.org ($199), in that order, as the foreign registration services for Colorado. Colorado charges $100 to register, and service fees add $397 to $497 over three years.
By the LLC Answered editorial team
Answer in four lines
Short reply
Charged by the state
$100
Certificate of good standing?
Not needed
Once registered
$25, periodic report
Who to hire
Mainstay Filing, Colorado Registered Agent.co then CO Registered Agent.org
Colorado: our answer
Prices are from each company's own pricing. See how we decide.
#1Top reply
1. Mainstay Filing: best for the same fee everywhere
$199 plus the state fee; then $149 a year
First place: Mainstay Filing, where registration is $199, and nothing is billed for the registered agent until year two.
Is it the smaller bill? No. Colorado Registered Agent.co costs $100 less over three years, but it works in Colorado only.
After the free year, the registered agent renews at $149.
What is bundled
State registration handled
Registered agent, covered the first year
No change in price by state
Pluses
One price anywhere
$199 plus state fee
No agent charge in year one
Downsides
Renewal $50 above Colorado Registered Agent.co
#2One-state pick
2. Colorado Registered Agent.co: best for a low yearly agent fee
$199 plus the state fee; then $99 a year
In second spot, Colorado Registered Agent.co, as registering costs $199 over the state fee, agent covered in year one, then $99 a year.
What is bundled
Application sent for you
Agent included in year one
Pluses
Agent covered in year one
Then $99 yearly
$199 over the state fee
Downsides
No coverage outside the state
#3One-state pick
3. CO Registered Agent.org: best for a low agent renewal
$199 plus the state fee; then $99 a year
In third spot, CO Registered Agent.org, as registering costs $199 over the state fee, agent covered in year one, then $99 a year.
It charges what Colorado Registered Agent.co charges; the order between them is close.
What is bundled
Application sent for you
Agent included in year one
Pluses
$199 over the state fee
Then $99 yearly
Agent covered in year one
Downsides
No coverage outside the state
Prices side by side
#
Who
Start price
Renewal
3-year cost
Included
1
Mainstay Filing
$199
$149/yr
$497
state registration handled; registered agent, covered the first year; no change in price by state
The bottom line adds up the filing fee, the reports for years two and three and the minimum tax if there is one. A cost with no set price, like a newspaper notice, is left out of the sum.
Other questions
Is one agent enough for both states?
Each state applies its own rule, so your home state still needs an agent. A provider active in every state, such as Mainstay Filing, covers both.
What does each charge over three years?
$497 for Mainstay Filing, $397 for Colorado Registered Agent.co, $397 for CO Registered Agent.org, not counting state fees.
Where are these numbers from?
We link each state fee to its official page and take service prices from the company sites, dated.
Do I need outside help?
Nothing requires it. Think of a service as paid convenience.
Can I hire someone to register?
They do. Your cost from the state is unchanged, and the service fee is the only thing that differs.
Which one do you pick in Colorado?
Pick Mainstay Filing first, with Colorado Registered Agent.co and CO Registered Agent.org behind it.