Skip to content
Filing Verdict

Rankings of registered agents, LLC formation and foreign registration services in all 50 states.

LLC service verdict · Colorado

3 Best LLC Services in Colorado (2026)

Filing Verdict's 2026 verdict on LLC services in Colorado: Mainstay Filing ($199), Colorado Registered Agent.co ($199) and CO Registered Agent.org ($199), in that order. Mainstay Filing takes first place: $199 a year pays for the formation filing, a full year as your registered agent and the periodic report, renewing at $199.
The Filing Verdict editorial team
Number one here
Spot 1

1. Mainstay Filing: best for formation, agent and periodic report for one price

$199 each year plus the state fee ($249 due at checkout)

9.6Editorial score
out of 10

Mainstay Filing wins here: the Colorado formation, your registered agent and the periodic report all sit in a single $199 yearly charge.

Mainstay files the periodic report for you as part of the renewal. Colorado charges $25 every year, due last day of the entity's anniversary month, and a late filing adds $50; the state's fee is passed through at cost.

The three-year bill is $200 higher than Colorado Registered Agent.co's, and the wider coverage is worth that to us.

What you get

  • Preparation and filing of the formation document
  • Your registered agent for the whole year
  • The periodic report, prepared and filed
  • The EIN application

What we like

  • The EIN application comes with it
  • Colorado's fee is passed through at cost
  • $199 at renewal, nothing extra
  • One $199 yearly price that includes the periodic report

Cons

  • From year two its agent costs $100 a year more than Colorado Registered Agent.co's
Visit Mainstay FilingPartner link. We may earn money if you buy. Our full Mainstay Filing verdict
Best for a Colorado-only company
Spot 2

2. Colorado Registered Agent.co: best for a Colorado LLC that plans to stay local

Formation $199, then $99 a year for the agent, plus the state fee

9.3Editorial score
out of 10

Second place goes to Colorado Registered Agent.co: $199 plus the Colorado filing fee, with the first year of registered agent service included, then $99 a year.

The plan gives the company an in-state street address as its registered office, and papers served on the company are scanned to your online account.

The periodic report filing is not in its published prices, so you file it with Colorado yourself every year.

What you get

  • Articles prepared and filed
  • The first year as your registered agent

What we like

  • The first registered agent year is included
  • $99 a year for the agent after year one
  • A $199 service fee plus the filing fee

Cons

  • Does not take over the periodic report
  • The EIN application is billed separately ($99)
Visit Colorado Registered Agent.coPartner link. We may earn money if you buy. Our full Colorado Registered Agent.co verdict
Best for a Colorado-only company
Spot 3

3. CO Registered Agent.org: best for a local Colorado filing

Formation $199, then $99 a year for the agent, plus the state fee

9.0Editorial score
out of 10

Third place goes to CO Registered Agent.org: $199 plus the Colorado filing fee, with the first year of registered agent service included, then $99 a year.

The plan gives the company an in-state street address as its registered office, and papers served on the company are scanned to your online account.

The periodic report filing is not in its published prices, so you file it with Colorado yourself every year.

On price and features Colorado Registered Agent.co and CO Registered Agent.org match line for line, which makes this a close call between safe choices.

What you get

  • Articles prepared and filed
  • The first year as your registered agent

What we like

  • Agent at $99 yearly from year two
  • Year-one registered agent service included
  • A $199 service fee plus the filing fee

Cons

  • Does not take over the periodic report
  • The EIN application is billed separately ($99)
Visit CO Registered Agent.orgPartner link. We may earn money if you buy. Our full CO Registered Agent.org verdict

The 3 verdicts at a glance

No.ServiceVerdict scoreService feeYear twoBest forVisit
1Mainstay Filing9.6$199$199/yrFormation, agent and periodic report, one price Visit Mainstay FilingPartner link. We may earn money if you buy.
2Colorado Registered Agent.co9.3$199$99/yrA Colorado-only LLC watching its budget Visit Colorado Registered Agent.coPartner link. We may earn money if you buy.
3CO Registered Agent.org9.0$199$99/yrA Colorado-only LLC watching its budget Visit CO Registered Agent.orgPartner link. We may earn money if you buy.
The marks out of 10 are editorial: Filing Verdict sets them from the criteria on How we rank, and customers do not rate anything here.

Colorado LLC service prices for 2026: year one, renewals and three years

ServiceYear 1Year 2Year 3Total, 3 yearsPeriodic report handled for you
Mainstay Filing$199$199$199$597Yes
Colorado Registered Agent.co$199$99$99$397No
CO Registered Agent.org$199$99$99$397No
Prices were read from each company's own pages on November 12, 2026. Colorado's $50 filing fee goes on top of every row and is not counted in these totals.

The reasoning behind the order

Filing Verdict gives total over three years and paperwork the price handles 35% each, and renewal behavior, match to the state and up-front pricing split the rest. In Colorado the order was settled by paperwork the price handles.

Colorado wants a report every year with a $25 state fee, and filing late adds $50. Mainstay's price includes that filing and Colorado Registered Agent.co's does not, so the coverage score outweighed Colorado Registered Agent.co's lower three-year cost.

The full list of criteria and weights is on How we rank.

Colorado LLC filing fee and form: official figures

Filing the Articles of Organization costs $50 at the Colorado Secretary of State. Each service on this page adds that fee on top of its own price, at cost.

Colorado LLC upkeep after the filing

The periodic report is filed every year, due last day of the entity's anniversary month. The state fee is $25. A late filing adds $50. Every LLC must name a registered agent with an in-state street address.

Colorado LLC service: questions answered

What does it cost to form an LLC in Colorado?

The state filing fee is $50, and the service fee is $199.

Which form do I file to create the LLC?

You file the Articles of Organization with the Colorado Secretary of State.

Does a Colorado LLC have to name a registered agent?

Yes. Colorado requires every LLC to keep a registered agent on file, and the agent needs a street address in the state.

Which yearly filings does a Colorado LLC owe?

Just the periodic report, every year, due last day of the entity's anniversary month ($25 state fee).

Does the price include the EIN application?

Mainstay Filing includes it in the yearly price. Colorado Registered Agent.co and CO Registered Agent.org bill $99 extra. The IRS charges nothing for an EIN.

Which LLC service is the best pick in Colorado?

Mainstay Filing, because one $199 yearly price that files the Colorado formation, acts as your registered agent and files the periodic report, renewing at $199.

See also

Sources and dates

  1. Colorado Secretary of State, confirmed August 2026
  2. Colorado Secretary of State, confirmed August 2026
  3. Colorado yearly filing: Periodic report, official source, confirmed October 2026
  4. Colorado report due date, confirmed August 2026
  5. Colo. Rev. Stat. § 7-80-203, confirmed August 2026
  6. Colorado formation fee: Filing fee, official source, confirmed October 2026
  7. Checked November 12, 2026: Mainstay Filing, Colorado service page
  8. Checked November 12, 2026: Colorado Registered Agent.co, pricing and service pages
  9. Checked November 12, 2026: CO Registered Agent.org, pricing and service pages