3 Best Registered Agents in Colorado (2026), Ranked
Who should you hire in Colorado for registered agents in 2026: we say Mainstay Filing ($149 a year), Colorado Registered Agent.co ($99 a year) and CO Registered Agent.org ($99 a year), ranked best first. Prices begin at $99 to $149 a year and reach $297 to $447 across three years.
By the LLC Answered editorial team
Short version
Short reply
Does the LLC need one?
Yes, by law
Name used by the state
Registered agent
What services charge
$99 to $149 on a yearly basis
Our picks
Mainstay Filing, Colorado Registered Agent.co then CO Registered Agent.org
The Colorado ranking
Order set by our five tests: three-year cost first, then what the price covers.
#1First choice
1. Mainstay Filing: best for LLCs that may expand
$149 per year, then $149 on renewal
First place: Mainstay Filing, where $149 a year, with the same price in all fifty states.
Colorado Registered Agent.co saves $150 across three years. The trade is coverage outside Colorado.
What is bundled
Office address inside the state
Three government mailings a year, scanned at no charge
Works for corporations, LPs, LLPs and nonprofits as well as LLCs
Pluses
Annual price $149, renewal price $149
One price across all fifty states
Downsides
$50 a year more than Colorado Registered Agent.co
Just the agent role
#2Colorado only
2. Colorado Registered Agent.co: best for a low annual fee
$99 per year, then $99 on renewal
Colorado Registered Agent.co comes next since a company that never leaves Colorado pays $297 over three years.
What is bundled
Registered office address
Service papers posted online
Pluses
Under Mainstay Filing on yearly price
$99 annually
Downsides
No coverage outside the state
Filing the periodic report stays on your to-do list
#3Colorado only
3. CO Registered Agent.org: best for local service
$99 per year, then $99 on renewal
CO Registered Agent.org comes next since a company that never leaves Colorado pays $297 over three years.
The same published prices as Colorado Registered Agent.co, so choose whichever you prefer.
What is bundled
Registered office address
Service papers posted online
Pluses
Under Mainstay Filing on yearly price
$99 annually
Downsides
No coverage outside the state
Filing the periodic report stays on your to-do list
Numbers at a glance
#
Who
First year
Renews at
3-year cost
What is covered
1
Mainstay Filing
$149
$149/yr
$447
office address inside the state; three government mailings a year, scanned at no charge; Works for corporations, LPs, LLPs and nonprofits as well as LLCs
Prices as of November 13, 2026. The state's own fees are in the checklist below.
Questions and replies
Can the LLC go without a registered agent?
Every LLC must name a registered agent with an in-state street address.
Where the law says so: C.R.S. § 7-90-701. sos.state.co.us | October 2026 | verified
Who counts as a valid 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.
Satisfy the rule and you can name yourself, with no agent fee.
How much should I budget for an agent?
$99 to $149 a year with the services we would hire, or $297 to $447 across three years.
Whoever you name, the state fees stay the same.
Why does a state want an LLC to have one?
It collects lawsuits and official state mail for the LLC at a Colorado address.
State side: Colorado's published fee schedules and forms. Service side: the prices each company lists.
Do I need outside help?
Hiring is optional. The law asks for a filing, not for a filer.
What is the best registered agent for Colorado?
Mainstay Filing leads because $149 a year is its fee in this state and every other; Colorado Registered Agent.co and CO Registered Agent.org come next.