3 Best Registered Agents in Colorado (2026), Ranked
Best registered agents in Colorado for 2026: CO Registered Agent.org ($99 a year), Colorado Registered Agent.co ($99 a year) and Mainstay Filing ($149 a year), ranked in that order. First year: $99 to $149. Three years: $297 to $447.
LLC Q and A editorial team ·
At a glance
Agent required?
Yes, by statute
Title in law
Registered agent
Agent price
$99 to $149 yearly
Pick
CO Registered Agent.org, Colorado Registered Agent.co then Mainstay Filing
Prices as of November 13, 2026. State fees are in the checklist below.
Key questions
A registered agent required?
Every LLC must name a registered agent with an in-state street address.
Law: C.R.S. § 7-90-701. source of record: sos.state.co.us, confirmed October 2026
Who can be the agent?
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.
Qualify, and you can serve yourself at no cost.
What does an agent cost?
Recommended services charge $99 to $149 annually, $297 to $447 across three years.
The state's charges are independent of which agent you name.
What does an agent do?
Receives legal papers and state notices for the company in Colorado.
Three-year total = filing + report in year 2 + report in year 3 + minimum tax (if any). Fees without a fixed amount, like newspaper notices, are not summed.
More replies
Can I be my own agent?
Usually yes: check who qualifies and which address counts.
What address counts?
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.
What do the picks cost over three years?
CO Registered Agent.org will run $297, Colorado Registered Agent.co will run $297, Mainstay Filing will run $447
Are the fees official?
State fees cite their official page; service prices come from the company's own site.
Do I have to hire one?
No law requires a service; it is a paid convenience.
Who ranks first in Colorado?
CO Registered Agent.org, because $99 a year then $99 suits an LLC that stays in Colorado. Then Colorado Registered Agent.co and Mainstay Filing.
Source list
Reference line for Colorado Secretary of State, drawn from sos.state.co.us and confirmed August 2026, as noted by our editors
Reference line for Colorado Secretary of State, drawn from sos.state.co.us and confirmed August 2026, as noted by our editors
Reference line for Colorado yearly filing: Periodic report, drawn from coloradosos.gov and confirmed October 2026, as noted by our editors
Reference line for Colorado report due date, drawn from colorado.public.law and confirmed August 2026, as noted by our editors
Reference line for Colo, drawn from sos.state.co.us and confirmed August 2026, as noted by our editors
Reference line for Colorado formation fee: Filing fee, drawn from coloradosos.gov and confirmed October 2026, as noted by our editors
Price page: CO Registered Agent.org pricing page, accessed November 13, 2026