3 Best Registered Agents in Colorado (2026): Prices Tracked
The best-value registered agents for Colorado in 2026 are Mainstay Filing ($149/yr), CO Registered Agent.org ($99/yr) and Colorado Registered Agent.co ($99/yr), ranked in that order. Year one costs $99 to $149 among these agents, and three years cost $297 to $447.
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%
The short version
Agent ruleYessos.state.co.us (pulled October 2026, noted here)
What year one costs$99 to $149Charged each year
What three years cost$297 to $447First year plus two renewals
Periodic report$25 a yearcoloradosos.gov (pulled October 2026, noted here)
Totals cross inDoes not happenRanking does not flip
What Colorado services charge
Services are ordered by value, and every price comes from a company page. State fees stay the same whoever the agent is.
#Ordered byPrice in year 1Price at renewalThree-year spend
1
First place
1. Mainstay Filing: best for the same price in every state
$149 a year, moving to $149
Price in year 1$149
Price at renewal$149/yr
Three-year spend$447
Mainstay Filing leads since $149 a year in this state and in every other one.
Three years cost $150 more here than at CO Registered Agent.org, but the added filings it covers count for more in the order.
Price covers
An office address inside the state
Up to three government mailings a year scanned for you at no charge
Covers LLCs, corporations, LPs, LLPs and nonprofits
Holds up
Year 1 $149, year 2 $149
The same price in all fifty states
Weak spots
$50 a year more than CO Registered Agent.org
Agent service only, reports stay with you
2
Colorado only
2. CO Registered Agent.org: best for a single state to cover
$99 a year, moving to $99
Price in year 1$99
Price at renewal$99/yr
Three-year spend$297
CO Registered Agent.org places second. Just one state, $99 a year, $99 once it renews.
Price covers
A physical in-state office
Online copies of legal papers
Holds up
Yearly price below the national option
$99 a year, unchanged at renewal
Weak spots
Colorado only
No help with the periodic report
3
Colorado only
3. Colorado Registered Agent.co: best for staying local
$99 a year, moving to $99
Price in year 1$99
Price at renewal$99/yr
Three-year spend$297
Colorado Registered Agent.co places third. Just one state, $99 a year, $99 once it renews.
Both the first-year and renewal prices equal CO Registered Agent.org's.
For the state side of three years we add up the filing fee, the report charged in years two and three and a yearly minimum tax if the state has one. Publication requirements and other open-ended costs are noted in the text, not totaled.
The reasoning behind the order
In Colorado, filings covered by the price (29% of the order) was the measure where Mainstay Filing pulled ahead.
CO Registered Agent.org cannot match its reach across states.
Colorado registered agent requirements, as written by the state (Colorado Secretary of State)
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. (C.R.S. § 7-90-701)
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.
Source wording: sos.state.co.us (pulled October 2026, noted here)
State fees and nothing else
An owner who meets the address rule may serve free of charge; the services above put a price of $99 to $149 a year on that convenience.
Questions and answers
How much does a Colorado registered agent cost per year?
These agents charge $99 to $149 each year.
What do three years of agent service cost?
$297 to $447 across these services, not counting state fees.
Is a registered agent required for a Colorado LLC?
Yes, it does. Every LLC must name a registered agent with an in-state street address.
Can the owner serve as the registered agent?
Yes, when you qualify under the rules listed here.
What does the state charge the LLC each year?
$25 each year for the periodic report, with the deadline given as last day of the entity's anniversary month.
In what year does one service become pricier than another?
The order stays the same for ten years.
Which registered agent is the best value in Colorado?
Mainstay Filing is first, with CO Registered Agent.org and Colorado Registered Agent.co after it.