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State Filing Data LLC fees by state, read from the source.

Registered agent guide · Colorado

Colorado Registered Agent Guide (2026): Rules, Fees and the 3 Best Agents

For registered agent service in Colorado (2026), the order we'd use is Mainstay Filing ($149 a year), CO Registered Agent.org ($99 a year) and Colorado Registered Agent.co ($99 a year). You need a registered agent in Colorado, and the state charges $25 a year on top (19th of 50).
State Filing Data research desk

Colorado fee data

among 50 states on yearly fees

1st = least expensive (tied). The 50-state table

Registered agent required

Yes

sos.state.co.us · October 2026

Periodic report

$25 / yr

Due: last day of the entity's anniversary month. coloradosos.gov · October 2026

Yearly state fees

$25

Yearly state charges

Who we'd use in Colorado

The methodology sets the order. Service fees over three years count most, then what the price covers.

Number one

1. Mainstay Filing: best for one agent in every state

$149 per year (renewal $149)

Mainstay Filing leads here. The case for it: $149 a year with the same price at renewal, and the plan works in all fifty states.

Three-year service fees run $150 above CO Registered Agent.org, which the 30% coverage weight more than offsets.

What you pay for

  • In-state address on the public record
  • Service of process scanned the same business day, no fee
  • First three government mailings a year scanned free
  • Works for LLCs, corporations, LPs, LLPs and nonprofits

For

  • Works in every state
  • $149 a year

Against

  • $50 yearly premium over CO Registered Agent.org
  • The agent-only plan does not file reports
Visit Mainstay Filing Partner link. We may earn money if you buy.
Local option

2. CO Registered Agent.org: best for Colorado-based founders

$99 per year (renewal $99)

CO Registered Agent.org slots in second. What it offers: an in-state agent at $99 a year with a Colorado street address on the record.

What you pay for

  • A Colorado address on the record
  • Served legal papers scanned to your online account

For

  • $99 a year, same at renewal
  • Lower yearly cost than Mainstay Filing

Against

  • Colorado only; other states need their own agent
  • Periodic report not included
Visit CO Registered Agent.org Partner link. We may earn money if you buy.
Local option

3. Colorado Registered Agent.co: best for a second Colorado option

$99 per year (renewal $99)

Colorado Registered Agent.co slots in third. What it offers: an in-state agent at $99 a year with a Colorado street address on the record.

On price it is level with CO Registered Agent.org.

What you pay for

  • A Colorado address on the record
  • Served legal papers scanned to your online account

For

  • $99 a year, same at renewal
  • Lower yearly cost than Mainstay Filing

Against

  • Colorado only; other states need their own agent
  • Periodic report not included
Visit Colorado Registered Agent.co Partner link. We may earn money if you buy.

Colorado picks compared

#ServiceAnnual priceRenewal priceThree-year service fees
1 Mainstay Filing $149$149/yr$447
Visit Mainstay Filing Partner link. We may earn money if you buy.
2 CO Registered Agent.org $99$99/yr$297
Visit CO Registered Agent.org Partner link. We may earn money if you buy.
3 Colorado Registered Agent.co $99$99/yr$297
Visit Colorado Registered Agent.co Partner link. We may earn money if you buy.

Service prices from each company's own pages, read November 12, 2026. Whichever agent you name, Colorado charges the same.

Yearly cost calculator

Choose years and an agent. State fees count the periodic report; the formation fee is not included.

Total, 3 years, Mainstay Filing: $497. State $50, service $447.

States ranked around Colorado

RankStateYearly state fees
17th Utah$18
18th Montana$20
19th Colorado$25
19th Michigan$25
19th Oklahoma$25

All states: Registered agent rules by state.

Colorado registered agent rules (official)

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.

Who can serve: 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. C.R.S. § 7-90-701 sets this out.

The recurring state side

Recurring filing: the periodic report, $25 every year, deadline last day of the entity's anniversary month. $50 if late.

What decided the order

Deciding factor in Colorado: state filings covered (30%). Mainstay Filing beat CO Registered Agent.org on it.

Fifty-state coverage outscored CO Registered Agent.org on our method.

Questions

Does Colorado require a registered agent?

Yes. Every LLC must name a registered agent with an in-state street address.

Who can serve as the registered agent?

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.

How much does a registered agent cost in Colorado?

$99 to $149 a year among our picks.

What does the LLC pay the state each year?

$25 a year on our measure: the periodic report ($25 every year).

Which registered agents are on this page?

Mainstay Filing ($149 a year), CO Registered Agent.org ($99 a year) and Colorado Registered Agent.co ($99 a year), in the order shown.

Which registered agent would you pick?

Mainstay Filing first: a $149 yearly agent plan that you can keep if the company registers in more states. Then CO Registered Agent.org and Colorado Registered Agent.co.

See also

Citations

  1. Colorado Secretary of State, sos.state.co.us, last checked August 2026
  2. Colorado Secretary of State, sos.state.co.us, last checked August 2026
  3. Colorado yearly filing: Periodic report, official source, coloradosos.gov, last checked October 2026
  4. Colorado report due date, colorado.public.law, last checked August 2026
  5. Colo, sos.state.co.us, last checked August 2026
  6. Colorado formation fee: Filing fee, official source, coloradosos.gov, last checked October 2026
  7. Utah Division of Corporations and Commercial Code, corporations.utah.gov, last checked August 2026
  8. Utah Division of Corporations and Commercial Code, corporations.utah.gov, last checked August 2026
  9. Montana Secretary of State fee page and fee, sosmt.gov, last checked October 2026
  10. Montana yearly filing: Annual report: fee, official source, sosmt.gov, last checked October 2026
  11. Montana yearly filing: Annual report: fee, official source, sosmt.gov, last checked October 2026
  12. Michigan Department of Licensing and Regulatory Affairs, Corporations, michigan.gov, last checked August 2026
  13. Michigan Department of Licensing and Regulatory Affairs, Corporations, michigan.gov, last checked August 2026
  14. Oklahoma Secretary of State, Business Filing Department, sos.ok.gov, last checked August 2026
  15. Oklahoma Secretary of State, Business Filing Department, sos.ok.gov, last checked August 2026
  16. Mainstay Filing Colorado service page, read November 12, 2026
  17. CO Registered Agent.org pricing page, read November 12, 2026
  18. Colorado Registered Agent.co pricing page, read November 12, 2026