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Formation Scorecard

Foreign registration scorecard · Colorado

3 Best Foreign Registration Services in Colorado (2026)

On the Formation Scorecard 2026 scorecard for foreign registration services in Colorado the order reads Mainstay Filing ($199), Colorado Registered Agent.co ($199) and CO Registered Agent.org ($199). Mainstay Filing posts the top score: $199 plus state fees in any state, year-one registered agent service included.
Researched and written by the Formation Scorecard editorial team
Rank #1 Our top pick in Colorado

1. Mainstay Filing: best for companies spread across states

9.3 Editor score out of 10
Service fee $199 with the state fee added ($299 today); agent renewing at $149

Mainstay Filing leads the card: $199 on top of the state's fee, with a free first year as your registered agent and the same price in every state.

Year one of agent service is on the house; later years cost $149 anywhere.

Mainstay's three-year total sits $100 above Colorado Registered Agent.co's, which the extra coverage earns back in our scoring.

What you get

  • Preparation and filing of the registration
  • A free first year as your registered agent
  • Legal papers served on the company scanned free on the same business day

Strengths

  • $199 service fee, with the state fee on top
  • Served papers scanned on the day they arrive, free
  • Same price across all fifty states
  • Registered agent free for year one

Watch for

  • Agent renewal of $149 is $50 more than Colorado Registered Agent.co charges
Visit Mainstay FilingPartner link. We may earn money if you buy. Mainstay Filing: the full write-up
Rank #2 Lower renewal than Mainstay

2. Colorado Registered Agent.co: best for companies that add just Colorado

8.9 Editor score out of 10
Service fee $199 with the state fee added; agent renewing at $99

Colorado Registered Agent.co takes second spot: $199 beyond the state fee to register in Colorado, agent renewing at $99.

The plan puts the company at an in-state street address and scans papers served on it to your online account.

What you get

  • Filing with the state
  • First-year registered agent service

Strengths

  • Registered agent service for year one is in the price
  • A $199 service fee before the state's
  • $99 per year for the agent after the first

Watch for

  • Limited to Colorado; your home state still needs an agent
  • $99 extra for the EIN application
Visit Colorado Registered Agent.coPartner link. We may earn money if you buy. Colorado Registered Agent.co: the full write-up
Rank #3 Best local option

3. CO Registered Agent.org: best for registrations in Colorado only

8.6 Editor score out of 10
$199 on top of the state fee, then the agent at $99 a year from year two

CO Registered Agent.org takes third spot: $199 beyond the state fee to register in Colorado, agent renewing at $99.

The plan puts the company at an in-state street address and scans papers served on it to your online account.

The published prices and features do not separate Colorado Registered Agent.co from CO Registered Agent.org; choose whichever you like.

What you get

  • Filing with the state
  • First-year registered agent service

Strengths

  • Registered agent service for year one is in the price
  • Then $99 a year to keep the agent
  • $199 to register, state fee extra

Watch for

  • Limited to Colorado; your home state still needs an agent
  • $99 extra for the EIN application
Visit CO Registered Agent.orgPartner link. We may earn money if you buy. CO Registered Agent.org: the full write-up

The 3 entries on one card

Place Service Card score Service fee Year two Best for Go
1 Mainstay Filing 9.3 $199 $149/yr Companies spread over several states Visit Mainstay FilingPartner link. We may earn money if you buy.
2 Colorado Registered Agent.co 8.9 $199 $99/yr The lowest agent renewal we rank here Visit Colorado Registered Agent.coPartner link. We may earn money if you buy.
3 CO Registered Agent.org 8.6 $199 $99/yr The lowest agent renewal we rank here Visit CO Registered Agent.orgPartner link. We may earn money if you buy.

The marks out of 10 come from our editors and follow the weights on How we rank; none of them is a customer rating.

Colorado foreign registration service cost in 2026: first year, renewal and the three-year tally

Service First year Second year Third year Three-year tally Agent paid in year one
Mainstay Filing $199 $149 $149 $497 Free
Colorado Registered Agent.co $199 $99 $99 $397 Included
CO Registered Agent.org $199 $99 $99 $397 Included

Each price comes from the company's own site, read on November 12, 2026. Add Colorado's $100 registration fee to each row; the tally above leaves it out.

Why the order falls this way

Points here: 25% for cost across three years, 25% for coverage of the price and 50% across renewal terms, state-by-state fit and pricing clarity. Colorado came down to coverage of the price.

A foreign registration touches two states, so a single provider at one price in both earned the most coverage points, ahead of Colorado Registered Agent.co.

Every criterion and weight appears on How we rank.

Foreign LLC registration in Colorado: fee, form and filing office

An outside company registers by sending the Statement of Foreign Entity Authority to the Colorado Secretary of State, Business Program, with a $100 state fee.

Once registered, the company files the periodic report ($25), due once a year, by the end of the second month after your report month.

Gather these before filing

  • The company name exactly as the home state has it, plus the date it was formed.
  • An in-state registered agent; any service on this card can fill that role.
  • The state fee of $100, sent in with the filing.
  • A calendar date for the periodic report and its $25 fee.

The price of ignoring Colorado registration

Civil penalties may run as high as $5,000.

Colorado foreign registration service: quick questions

Does Colorado make an outside LLC register before operating?

Yes, when the company does business there.

What will foreign registration run in Colorado?

Expect $100 for the state plus $199 for the service.

Does a registered company still need a registered agent?

Yes, a registered agent with an in-state street address has to stay on file.

Which foreign registration services sit on this card?

Mainstay Filing ($199), Colorado Registered Agent.co ($199) and CO Registered Agent.org ($199), top to bottom.

Is there a recurring filing for a registered foreign LLC?

Yes, the periodic report, with a $25 fee.

Which foreign registration service leads the card for Colorado?

Mainstay Filing, since it files the Colorado registration for $199 and acts as your registered agent, free for year one and $149 a year after.

Related pages

Where the figures come from

  1. Colorado Secretary of State, as of August 2026
  2. Colorado Secretary of State, as of August 2026
  3. Colorado yearly filing: Periodic report, official source, as of October 2026
  4. Colorado report due date, as of August 2026
  5. Colo. Rev. Stat. § 7-80-203, as of August 2026
  6. Colorado formation fee: Filing fee, official source, as of October 2026
  7. Colorado Secretary of State, foreign entity FAQ, as of October 2026
  8. Sample Statement of Foreign Entity Authority, as of October 2026
  9. Colorado Revised Statutes 2024, Title 7, as of October 2026
  10. Registered agent requirements effective July 1, 2025, as of October 2026
  11. Read on November 12, 2026: Colorado service page for Mainstay Filing
  12. Read on November 12, 2026: pricing and service pages for Colorado Registered Agent.co
  13. Read on November 12, 2026: pricing and service pages for CO Registered Agent.org