Place1
Top pick on this pageCO Registered Agent.org
1. CO Registered Agent.org: best for Colorado LLCs that file their own reports
$199 up front, $99 a year from year two
Our mark9.3out of 10
We put CO Registered Agent.org first: a $199 formation fee over the state's own, then $99 a year for the agent.
Served documents are scanned and shared online, and the registered office is a Colorado street address.
Filing Colorado's periodic report is not part of its published prices, so plan to file it yourself every year.
Cost decides it: over three years it comes in under Mainstay Filing.
What you get
- Formation prepared and filed
- First year of registered agent service
Why pick it
- $99 yearly from year two
- $199 to form
- First year of registered agent service included
Less good
- Periodic report filing not in the price
- EIN application is a $99 add-on
Place2
Best bundleMainstay Filing
2. Mainstay Filing: best for formation, agent and periodic report in one price
$199 a year, state fee extra ($249 today)
Our mark8.8out of 10
Mainstay Filing comes second with one $199-a-year price that covers the Colorado filing, your registered agent and your periodic report, renewing at $199.
Each year Mainstay prepares and files the periodic report, passing the $25 state fee through at cost; filing late in Colorado costs $50.
It costs $200 more than CO Registered Agent.org over three years, which is why it sits below it on our cost score.
What you get
- Formation prepared and filed
- Your registered agent, all year
- Your periodic report prepared and filed
- EIN application
Why pick it
- EIN application included
- $199 renewal, no add-ons
- State fee at cost, no markup
- $199/yr covers formation and agent and report
Less good
- Higher renewal than CO Registered Agent.org (by $100)
Place3
Best value hereColorado Registered Agent.co
3. Colorado Registered Agent.co: best for Colorado-only LLCs
$199 up front, $99 a year from year two
Our mark8.6out of 10
Colorado Registered Agent.co comes third with a $199 formation fee over the state's own, then $99 a year for the agent.
Served documents are scanned and shared online, and the registered office is a Colorado street address.
Filing Colorado's periodic report is not part of its published prices, so plan to file it yourself every year.
Prices and features match CO Registered Agent.org exactly, so the two are close to interchangeable.
What you get
- Formation prepared and filed
- First year of registered agent service
Why pick it
- $199 to form
- First year of registered agent service included
- $99 yearly from year two
Less good
- Periodic report filing not in the price
- EIN application is a $99 add-on
Our top 3 at a glance
| Rank | Service | Our score | Service fee | Year two | Best for | Link |
|---|
| 1 | CO Registered Agent.org | 9.3 | $199 | $99/yr | A Colorado-only LLC on a budget | Visit CO Registered Agent.orgPartner link. We may earn money if you buy. |
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| 2 | Mainstay Filing | 8.8 | $199 | $199/yr | Formation, agent and periodic report in one price | Visit Mainstay FilingPartner link. We may earn money if you buy. |
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| 3 | Colorado Registered Agent.co | 8.6 | $199 | $99/yr | A Colorado-only LLC on a budget | Visit Colorado Registered Agent.coPartner link. We may earn money if you buy. |
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The scores are ours: editorial marks out of 10 built from the weighted criteria on How we rank, not ratings from customers.
Colorado LLC service cost over three years (2026)
| Service | Year one | Year two | Year three | Three-year total | Periodic report filed for you |
|---|
| CO Registered Agent.org | $199 | $99 | $99 | $397 | No |
|---|
| Mainstay Filing | $199 | $199 | $199 | $597 | Yes |
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| Colorado Registered Agent.co | $199 | $99 | $99 | $397 | No |
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We read these prices on the companies' own sites on November 12, 2026. Colorado's filing fee ($50) is paid on top with every service and is left out of these totals.
How we picked the order
Five criteria set the order; the two heaviest are three-year cost and what one price covers. Here three-year cost made the difference.
CO Registered Agent.org's three-year total is $397 ($200 below Mainstay Filing). Doing the periodic report yourself saves money, and cost carries the most weight.
More on the criteria: How we rank.
Colorado LLC cost: the official fee
Colorado charges $50 to file the Articles of Organization with the Colorado Secretary of State under Colo. Rev. Stat. § 7-80-203 (Formation); contents per § 7-80-204. Every service in this ranking passes that fee through on top of its own price.
Yearly upkeep and your agent
Plan for the periodic report every year (last day of the entity's anniversary month); the fee is $25. Late: $50 more. Every LLC must name a registered agent with an in-state street address.
Common Colorado questions
How much does it cost to form an LLC in Colorado?
State fee $50, service fee $199.
What form creates the LLC?
The Articles of Organization, filed with the Colorado Secretary of State.
Do I need a registered agent for a Colorado LLC?
Every LLC must name a registered agent with an in-state street address.
What yearly filings does a Colorado LLC have?
The periodic report, every year, due last day of the entity's anniversary month, with a $25 state fee.
Is the EIN application included?
Mainstay Filing's yearly price includes it. CO Registered Agent.org and Colorado Registered Agent.co charge $99 for it. The IRS itself charges no fee for an EIN.
Which LLC service is best in Colorado?
We rank CO Registered Agent.org first for Colorado formation at $199 plus state fees, with a $99 agent renewal.
Sources and dates
- www.sos.state.co.us/pubs/business/FAQs/reports.html (Colorado Secretary of State), last confirmed August 2026
- www.sos.state.co.us/pubs/business/helpFiles/REPORT_HELP.html (Colorado Secretary of State), last confirmed August 2026
- www.coloradosos.gov/pubs/business/FAQs/reports.html (Colorado yearly filing: Periodic report, official source), last confirmed October 2026
- colorado.public.law/statutes/crs_7-90-501 (Colorado report due date), last confirmed August 2026
- www.sos.state.co.us/pubs/info_center/fees/business.html (Colo. Rev. Stat. § 7-80-203), last confirmed August 2026
- www.coloradosos.gov/pubs/info_center/fees/business.html (Colorado formation fee: Filing fee, official source), last confirmed October 2026
- CO Registered Agent.org pricing and service pages, read on November 12, 2026
- Mainstay Filing Colorado service page, read on November 12, 2026
- Colorado Registered Agent.co pricing and service pages, read on November 12, 2026