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Researched and written by the Launchwise Review editorial team
Launchwise Review

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

Launch guide · Colorado · LLC service

3 Best LLC Services in Colorado (2026)

Researched and written by the Launchwise Review editorial team
For a 2026 launch in Colorado, Launchwise Review grades LLC services this way: Mainstay Filing ($199), Colorado Registered Agent.co ($199) and CO Registered Agent.org ($199). Mainstay Filing earns the top grade here: one $199 yearly price filing the Colorado formation, serving as your registered agent and filing the periodic report, then renewing at $199.
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Our top pick in Colorado

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

$199 yearly, state fee billed on top ($249 at checkout in all)

Our mark 9.3 out of 10

Top grade, Mainstay Filing: $199 a year covers the Colorado filing, registered agent duty for the year and the periodic report; it renews at $199.

When renewal comes, Mainstay prepares and files the periodic report so it is off your list. The Colorado fee is $25 every year, with a last day of the entity's anniversary month deadline, and being late adds $50; Mainstay passes the fee along at cost.

It runs $200 above Colorado Registered Agent.co across three years; the extra paperwork it handles is worth that to us.

In the price

  • Preparation and filing of the formation document
  • Your registered agent all year
  • Periodic report, prepared and filed each cycle
  • Your EIN application, done for you

Pros

  • Your EIN application is included
  • Colorado's fee goes through at cost
  • A single $199 yearly price that covers the periodic report
  • Renews at $199 without add-ons

Less good

  • After year one the agent portion is $100 a year above Colorado Registered Agent.co's
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing launch review
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Best value here

2. Colorado Registered Agent.co: best for a Colorado LLC that wants to stay close to home

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

Our mark 8.9 out of 10

Next up is Colorado Registered Agent.co: Colorado formation at $199 on top of the state fee, year-one registered agent service included, then $99 a year.

You get an in-state street address for the registered office, and any papers served on the company are scanned into your online account.

The periodic report is not in its published price, so that task stays on your list with Colorado, due every year.

In the price

  • Articles prepared and filed
  • Your registered agent for year one

Pros

  • The agent costs $99 a year after year one
  • Year-one registered agent duty is covered
  • Formation costs $199 before state fees

Less good

  • No periodic report filing in the price
  • EIN application costs extra ($99)
Visit Colorado Registered Agent.coPartner link. We may earn money if you buy.
Read the Colorado Registered Agent.co launch review
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Best local option

3. CO Registered Agent.org: best for a launch that stays in Colorado

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

Our mark 8.8 out of 10

Rounding out the list is CO Registered Agent.org: Colorado formation at $199 on top of the state fee, year-one registered agent service included, then $99 a year.

You get an in-state street address for the registered office, and any papers served on the company are scanned into your online account.

The periodic report is not in its published price, so that task stays on your list with Colorado, due every year.

Their posted prices and features match, so Colorado Registered Agent.co and CO Registered Agent.org grade as a near tie.

In the price

  • Articles prepared and filed
  • Your registered agent for year one

Pros

  • The first year as your registered agent is free
  • Formation costs $199 before state fees
  • $99 each year for the agent from year two

Less good

  • No periodic report filing in the price
  • EIN application costs extra ($99)
Visit CO Registered Agent.orgPartner link. We may earn money if you buy.
Read the CO Registered Agent.org launch review

The 3 grades at a glance

Place Company Launch grade Service price Second year Best fit Go
1 Mainstay Filing 9.3 $199 $199/yr Formation, agent and periodic report wrapped into one price Visit Mainstay FilingPartner link. We may earn money if you buy.
2 Colorado Registered Agent.co 8.9 $199 $99/yr A Colorado launch on a tight budget Visit Colorado Registered Agent.coPartner link. We may earn money if you buy.
3 CO Registered Agent.org 8.8 $199 $99/yr A Colorado launch on a tight budget Visit CO Registered Agent.orgPartner link. We may earn money if you buy.
Launchwise Review assigns every grade out of 10 itself using the criteria on How we rank; no customer ratings go into it.

Colorado LLC service cost in 2026: first year, renewals, three-year total

Company Year 1 Year 2 Year 3 Three years, total Files the periodic report for you
Mainstay Filing $199 $199 $199 $597 Yes
Colorado Registered Agent.co $199 $99 $99 $397 No
CO Registered Agent.org $199 $99 $99 $397 No
Prices were copied from each company's own pages on November 12, 2026. Add Colorado's $50 filing fee to any row; it is not in the totals.

The thinking behind the order

At Launchwise Review, cost to launch and stay and launch paperwork handled each count for 26% of a grade, and renewal behavior, state match and price transparency split the remaining 48%. In Colorado, launch paperwork handled made the call.

The state's report comes annually in Colorado, at $25, and a late one adds $50. Mainstay's price takes that filing off your list and Colorado Registered Agent.co's does not, so coverage beat Colorado Registered Agent.co's lower three-year cost.

Every criterion and weight is listed on How we rank.

Launching in Colorado: the state filing fee and form

Plan on $50 at the Colorado Secretary of State when you file the Articles of Organization. Each company below adds that state fee at cost.

Your Colorado LLC after launch: the upkeep list

Next on the list: the periodic report, every year, due last day of the entity's anniversary month. Set aside $25 for the state. Late filing adds $50. Every LLC must name a registered agent with an in-state street address.

Quick answers about Colorado LLC services

What will it cost to launch an LLC in Colorado?

The state filing fee is $50; add a service fee of $199.

Which form starts the LLC?

Look for the Articles of Organization at the Colorado Secretary of State.

Is a registered agent required on the Colorado formation form?

Yes. You name one on the formation form and keep one on file, with a street address in Colorado.

What stays on the to-do list after the LLC is launched?

The periodic report is the recurring item, filed every year with a last day of the entity's anniversary month deadline and a $25 state charge.

Will the EIN application be handled in this price?

Mainstay Filing folds it into the yearly price. The application runs $99 at Colorado Registered Agent.co and CO Registered Agent.org. Founders can also get an EIN from the IRS directly, with no fee.

Which service is the best start for a new Colorado LLC?

Mainstay Filing, because the Colorado formation, your registered agent and the periodic report are bundled at $199 a year.

See also

Sources and dates

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