3 Best Registered Agents in Colorado (2026), Plainly Answered
We'd pick Mainstay Filing ($149 a year), Colorado Registered Agent.co ($99 a year) and CO Registered Agent.org ($99 a year) in Colorado for 2026, in that order. The first year costs $99 to $149; three years cost $297 to $447.
By the Plain Charter editorial team ·
The short answer
Required?
Required by law
Name in the statute
Registered agent
Yearly cost
$99 to $149 a year
Who to hire
Mainstay Filing, Colorado Registered Agent.co then CO Registered Agent.org
Colorado: our picks
The order follows our five criteria, led by cost and coverage.
1First choice
1. Mainstay Filing: best for companies that may expand
$149 per year (renewal $149)
First choice: Mainstay Filing. The reason is simple: it costs $149 a year, $149 at renewal, and one account covers any state.
It costs $150 more than Colorado Registered Agent.co over three years; the difference buys one provider in every state.
The price covers
An address in the state
Three government mailings a year scanned free
Covers LLCs, corporations, LPs, LLPs and nonprofits
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.
You can be your own agent if you qualify; the state charges nothing extra.
What will the agent cost me?
From $99 to $149 a year, $297 to $447 across three years.
Your choice of agent leaves state fees unchanged.
Why does the state want one?
It signs for legal papers and state notices on the LLC's behalf, in Colorado.