3 Best Foreign Registration Services in Colorado (2026): Prices Tracked
The best-value foreign registration services for Colorado in 2026 are CO Registered Agent.org ($199), Colorado Registered Agent.co ($199) and Mainstay Filing ($199), ranked in that order. On top of Colorado's $100, three years of service run $397 to $497.
Tracked by the Filing Price Watch editorial team
Ordered by:
Three-year cost counts for 37% and filings covered for 29%, with renewal movement, crossover year and price visibility making up the rest. How we track
The short version
State registration fee$100coloradosos.gov (pulled October 2026, noted here)
Year 1 spread$199Excludes government fees
Three-year spend$397 to $497Three years of provider charges
Government charges over 3 years$150Same whichever service you use
Break-evenNeverOrder holds through year 10
Ranked picks
Services are ordered by value, and every price comes from a company page. The $100 state fee is kept outside the prices.
#Ordered byPrice in year 1Price at renewalThree-year spend
1
Top pick
1. CO Registered Agent.org: best for adding just one state
$199 for registration, $99 for the agent after that
Price in year 1$199
Price after year 1$99/yr
Three-year spend$397
CO Registered Agent.org leads since it charges $199 to register and covers a year of agent service, then $99 a year.
Its three-year total sits under Mainstay Filing's, which wins it the top spot.
Price covers
Registration done for you
A year of agent service to begin with
Holds up
Agent service free in year one
A small $99 renewal
Starts at $199
Weak spots
Limited to one state
2
Home-state provider
2. Colorado Registered Agent.co: best for a nearby provider
$199 for registration, $99 for the agent after that
Price in year 1$199
Price after year 1$99/yr
Three-year spend$397
Spot 2 goes to Colorado Registered Agent.co: it charges $199 to register and covers a year of agent service, then $99 a year.
CO Registered Agent.org lists exactly the same prices.
Price covers
Registration done for you
A year of agent service to begin with
Holds up
Starts at $199
A small $99 renewal
Agent service free in year one
Weak spots
Limited to one state
3
National
3. Mainstay Filing: best for one fee in any state
$199 for registration, $149 for the agent after that
Price in year 1$199
Price after year 1$149/yr
Three-year spend$497
Spot 3 goes to Mainstay Filing: $199 on top of what Colorado charges, then $149 a year for the agent.
CO Registered Agent.org comes in $100 cheaper over three years, enough to place it higher.
Agent service from year two: $149 a year, in any state.
Three years of state charges means one filing, two reports and any minimum tax. We list open-ended costs such as publication but keep them out of the total.
What decided the order
The 37% measure tracked three-year cost separated the top two.
Three years with CO Registered Agent.org come to $397, while Mainstay Filing runs $100 higher over the same stretch.
Colorado foreign LLC registration fee and rules, as written by the state
To register: the Statement of Foreign Entity Authority to the Colorado Secretary of State, Business Program, with $100.
An unregistered LLC risks fines up to $5,000.
Official text: coloradosos.gov (pulled October 2026, noted here)
What it costs without a service
$150 in state fees is the lowest the three years can cost. The list shows what each service puts on top ($397 to $497).
About these prices
How much does it cost to register a foreign LLC with Colorado?
$100 in state fees, and these services add $199.
What do these services cost over three years?
$397 to $497 across these services, not counting state fees.
What form registers the LLC?
The registration is Statement of Foreign Entity Authority, filed with the Colorado Secretary of State, Business Program.
What recurring filing comes after registration?
It is the periodic report, at $25.
In what year does one service become pricier than another?
There is no crossover inside ten years.
Which foreign registration service is the best value for Colorado?
CO Registered Agent.org is first, with Colorado Registered Agent.co and Mainstay Filing after it.