3 Best LLC Services in Colorado (2026): Prices Tracked
After this 2026 price pass on Colorado LLC formation services, the order is Mainstay Filing ($199), CO Registered Agent.org ($199) and Colorado Registered Agent.co ($199). The three-year total for services spans $397 to $597; the state's $50 to file is a separate charge.
Tracked by the Filing Price Watch editorial team
Ordered by:
Ordered by five tracked measures, led by cost at 37% and filings covered at 29%
Colorado in numbers
State filing fee$50coloradosos.gov (pulled October 2026, noted here)
First-year price range$199Service fees alone
Total after 3 years$397 to $597Opening year and two more
State fees by year three$100Same whichever service you use
Totals cross inDoes not happenNo service overtakes another
Colorado watchlist
Each entry shows year one, the price from year two and the three-year total. Colorado's $50 is added to any of them.
#Ordered byPrice in year 1Price at renewalThree-year spend
1
Best value
1. Mainstay Filing: best for forming and maintaining under one price
$199 a year, renewing at the same $199
Price in year 1$199
Price after year 1$199/yr
Three-year spend$597
First on the watchlist is Mainstay Filing. Formation, registered agent and periodic report all come with $199 a year, which renews at $199.
Spend $200 more than at CO Registered Agent.org across three years and the repeating filings are no longer yours.
It files the periodic report for you, and the $25 state fee is billed at cost.
Price covers
Formation paperwork done
Registered agent for the full year
Periodic report, filed when it is due
EIN application, prepared for you
State fee billed as is
Holds up
Price does not rise at renewal ($199)
It prepares the EIN application
$199 a year includes filing and agent and report
Weak spots
After year one the gap to CO Registered Agent.org is $100
2
Local pick
2. CO Registered Agent.org: best for the smallest opening bill
$199 for formation, $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 places second. $199 to start, agent service for year one included, then $99 a year.
Set aside time for the periodic report, because it is not included.
Price covers
Formation handled for you
A year of agent service to begin with
Holds up
$199 for the filing
No agent charge in year one
$99 a year after that
Weak spots
The periodic report ends up on your desk
EIN application adds $99
3
Local pick
3. Colorado Registered Agent.co: best for a local formation service
$199 for formation, $99 for the agent after that
Price in year 1$199
Price after year 1$99/yr
Three-year spend$397
Colorado Registered Agent.co places third. $199 to start, agent service for year one included, then $99 a year.
Set aside time for the periodic report, because it is not included.
Its prices are identical to CO Registered Agent.org's.
Reports in years two and three, the filing itself and any minimum tax are what make up the three-year state figure here. Costs the state does not put a number on are described, never added.
How first place was won
Filings covered by the price gave Mainstay Filing the lead. It makes up 29% of the order, and tracked three-year cost, renewal movement, crossover year and price visibility cover the remainder.
Filings covered per dollar made the difference: the periodic report is part of the price.
If you count the EIN application, CO Registered Agent.org costs less from year 2.
Colorado LLC filing fee and requirements, as written by the state
You send the Articles of Organization and $50 to the Colorado Secretary of State. Every LLC must name a registered agent with an in-state street address.
The state says: coloradosos.gov (pulled October 2026, noted here)
State fees and nothing else
Do it all yourself and you owe only the state: $100 over three years. The services above add $397 to $597 for the paperwork and the agent.
About these prices
How much do LLC formation services cost in Colorado?
Year one is $199 among these services, and Colorado adds $50 to file.
What do these services cost over three years?
$397 to $597 in service fees, before state fees.
What does Colorado charge to file an LLC?
Filing costs $50, using the Articles of Organization.
What does Colorado charge every year once the LLC exists?
Periodic report: $25 a year, and the deadline reads last day of the entity's anniversary month.
Does the price include the EIN application?
Mainstay Filing: no extra charge; CO Registered Agent.org: $99 more; Colorado Registered Agent.co: $99 more.
In what year does one service become pricier than another?
The order stays the same for ten years.
Which LLC formation service is the best value in Colorado?
Mainstay Filing is first, CO Registered Agent.org second, and Colorado Registered Agent.co third.