Rank1
Best here
1. Colorado Registered Agent.co: best for the smallest yearly fee on this list
$99 yearly, unchanged
Editor score9.2out of 10
Colorado Registered Agent.co takes the top spot because it charges $99 a year, the same at renewal, the smallest yearly price on this list.
Colorado Registered Agent.co gives the company a street address in the state and scans whatever is served there into your account.
The three-year bill is where it beats Mainstay Filing, and that criterion has the most weight along with coverage.
In the price
- A registered office with a street address in the state
- Papers served on the company are scanned into your online account
Good
- A lower yearly price than Mainstay Filing
- $99 yearly with no change at renewal
- Also files LLC formations, agent year one included
Watch for
- You handle the periodic report yourself
- Made for Colorado; another state needs a different agent
Rank2
Best local option
2. CO Registered Agent.org: best for Colorado specialists
$99 yearly, unchanged
Editor score8.9out of 10
CO Registered Agent.org makes the list at number two because it charges $99 a year, the same at renewal, the smallest yearly price on this list.
With CO Registered Agent.org the company gets an in-state street address for its registered office, and served papers are scanned to your online account.
CO Registered Agent.org matches Colorado Registered Agent.co on price and features, so this pair is a near tie.
In the price
- A registered office with a street address in the state
- Papers served on the company are scanned into your online account
Good
- Undercuts Mainstay Filing by the year
- LLC formation available with a free first agent year
- A yearly plan at $99 that does not rise
Watch for
- You handle the periodic report yourself
- Made for Colorado; another state needs a different agent
Rank3
Best all-in coverage
3. Mainstay Filing: best for all fifty states
$149 yearly, unchanged
Editor score8.8out of 10
Mainstay Filing makes the list at number three because one agent plan at $149 a year that keeps its price at renewal and scans papers served on the company the same business day for free.
Starting from scratch? The formation package is $199 a year and adds the Colorado filing and the periodic report.
Colorado Registered Agent.co undercuts it by $150 across three years, which leaves Mainstay Filing second on cost.
In the price
- An in-state street address on the public record
- Legal papers served on the company scanned and uploaded the same business day at no charge
- The first three letters from government offices each year, scanned at no charge
- Compliance reminders
Good
- Takes LLCs, corporations, LPs, LLPs and nonprofits
- $149 a year, and it holds at renewal
- Papers served on the company are scanned the same business day at no charge
- Free scans of three government letters each year
Watch for
- The agent alone is $50 a year more than Colorado Registered Agent.co
- No annual report filing on the agent-only plan
The 3 picks side by side
Scores out of 10 are editorial marks from Filing Shortlist, based on the criteria on How we rank. Customers do not rate anything on this site.
Colorado registered agent pricing in 2026: first year, renewals, three-year total
Every price comes from the company's own pages as of November 12, 2026. Colorado's own fees stay the same whichever agent you pick.
Why Colorado Registered Agent.co is first
Two criteria count most here, three-year price and what the price covers, at 28% each, while renewal terms, fit for the state and price clarity divide 44%. What tipped Colorado was three-year price.
Colorado Registered Agent.co adds up to $297 over three years, which is $150 below Mainstay Filing. A company with a Colorado agent need gains little from fifty-state reach, so the smaller yearly price settled it.
Every criterion and weight is set out on How we rank.
Colorado registered agent rules from Colorado Secretary of State
Every LLC must name a registered agent with an in-state street address. 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. Statute: C.R.S. § 7-90-701.
The Colorado periodic report: price and deadline
Every company formed here files the periodic report every year. The state charges $25 and wants it last day of the entity's anniversary month. Being late adds $50. The reminders about it go to your registered agent.
Common questions about Colorado registered agents
Does the company need to name a registered agent in Colorado?
It does. Colorado wants each LLC to name a registered agent with a street address inside the state, and that name stays on the public record.
How much do agents in Colorado charge per year?
Yearly prices span $99 to $149, and each company holds its price at renewal.
Can the owner be the registered agent?
Yes, if you meet the state's conditions. 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.
By what date is the Colorado periodic report due?
The deadline is last day of the entity's anniversary month, and the state charges $25. A late filing adds $50.
Which registered agents made this shortlist?
Colorado Registered Agent.co ($99 a year), CO Registered Agent.org ($99 a year) and Mainstay Filing ($149 a year), listed from the top pick down.
Which Colorado registered agent makes the shortlist first?
Colorado Registered Agent.co, because it is built for Colorado companies, at $99 a year with an in-state street address as the registered office.