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Founder Mentor Guide

Mentor notes 2 · Colorado

Colorado Registered Agent Walkthrough (2026): 6 Stages and the 3 Best Agents

Ranked for 2026, the services worth your call for naming a registered agent in Colorado are Mainstay Filing ($149 a year), Colorado Registered Agent.co ($99 a year) and CO Registered Agent.org ($99 a year), in that order. You are 6 short stages away from a properly named registered agent.

Advice from the Founder Mentor Guide mentors

Read this first

Required by law
Yes
Verify it at sos.state.co.us, which we opened in October 2026
Yearly cost of the agents we recommend
$99 to $149 a year
Posted prices
Periodic report
$25 a year
Verify it at coloradosos.gov, which we opened in October 2026
Stages
6
One at a time

What you will get from this walkthrough

  • What Colorado requires of a registered agent
  • The address and eligibility rules
  • Recording the agent
  • Which agents we recommend and why

Our shortlist for Colorado

Three-year cost and work taken off your desk weigh the most; how we score lists all five.

Our call

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

Our first call$149 yearly, no change at renewal

If you only phone one company, make it Mainstay Filing, because the price is $149 a year whichever of the fifty states you choose.

Colorado Registered Agent.co costs $150 less across three years; this one still ranks higher because it takes more work off your plate.

What you get

  • A Colorado street address for the record
  • Papers served on the company are scanned for you, no charge
  • Up to three government mailings a year are scanned for free
  • Also works for nonprofits, corporations, LPs and LLPs

What works

  • The same provider anywhere
  • A flat $149 yearly

What to watch

  • Higher by $50 a year
  • Agent service only, so reports stay with you
Visit Mainstay FilingPartner link. We may earn money if you buy.

Our call

2. Colorado Registered Agent.co: best for owners based in the state

Colorado specialist$99 yearly, no change at renewal

Our second call, Colorado Registered Agent.co: $99 yearly, and scans of served papers land in an online account.

What you get

  • A Colorado address for the registered office
  • Online copies of legal papers

What works

  • $99 each year, no increase
  • Under Mainstay Filing on price

What to watch

  • A single-state service
  • Periodic report is left out of the price
Visit Colorado Registered Agent.coPartner link. We may earn money if you buy.

Our call

3. CO Registered Agent.org: best for an in-state mailing address

Colorado specialist$99 yearly, no change at renewal

Our third call, CO Registered Agent.org: $99 yearly, and scans of served papers land in an online account.

On price it is a tie with Colorado Registered Agent.co.

What you get

  • A Colorado address for the registered office
  • Online copies of legal papers

What works

  • $99 each year, no increase
  • Under Mainstay Filing on price

What to watch

  • A single-state service
  • Periodic report is left out of the price
Visit CO Registered Agent.orgPartner link. We may earn money if you buy.

The Colorado picks side by side

#ServiceAnnual priceRenewal priceThree-year total
1Mainstay Filing$149$149/yr$447Visit Mainstay FilingPartner link. We may earn money if you buy.
2Colorado Registered Agent.co$99$99/yr$297Visit Colorado Registered Agent.coPartner link. We may earn money if you buy.
3CO Registered Agent.org$99$99/yr$297Visit CO Registered Agent.orgPartner link. We may earn money if you buy.
Pulled from each price page on November 13, 2026. Colorado asks the same either way.

The stages

  1. Stage 1

    What Colorado expects from an agent

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

    Check it yourself: Verify it at sos.state.co.us, which we opened in October 2026

  2. Stage 2

    See who is eligible

    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. Read C.R.S. § 7-90-701 for the wording.

  3. Stage 3

    Learn what counts as a registered office

    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.

    Each of our picks supplies a Colorado office address.

  4. Stage 4

    Go solo or hire out

    Qualify and you may serve yourself. A professional from our list runs $99 to $149 per year.

  5. Stage 5

    Make the agent official

    the Colorado Secretary of State is where the agent gets recorded, and where any later change goes too.

    Check it yourself: Verify it at coloradosos.gov, which we opened in October 2026

  6. Stage 6

    Track the repeating filing

    Send the periodic report on time ($25, last day of the entity's anniversary month) and the agent record stays right.

    Check it yourself: Verify it at coloradosos.gov, which we opened in October 2026

The bill

EntryGoes toAmount
A professional agentYour service$99 to $149 a year
Every year afterYour service$99 to $149 a year
Periodic reportState office$25 every year
Here is how the three-year state row is built: filing fee, then the report in each of years two and three, then any yearly minimum tax. Service fees get their own rows.

Why Mainstay Filing is first

On work taken off your desk (32% of the score) finished first, with right behind.

A single agent for every state topped the one-state plan.

Common questions

Is having a registered agent the law in Colorado?

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

Can I be my own registered agent?

You can, once you clear the who-qualifies and address rules in stages 2 and 3.

Can I change my registered agent later?

Yes, any time. Stage 5 shows how to file the change with the Colorado Secretary of State.

What does a registered agent cost in Colorado?

$99 to $149 a year across the agents on our list.

What does the LLC pay the state each year?

The main cost is the periodic report, $25 every year.

Which registered agent would you choose?

Go with Mainstay Filing: a steady $149 per year, with nothing to change if you move into another state. Then Colorado Registered Agent.co and CO Registered Agent.org.

Where we got the facts

  1. Colorado Secretary of State: go straight to sos.state.co.us, checked August 2026.
  2. Colorado Secretary of State: go straight to sos.state.co.us, checked August 2026.
  3. Colorado yearly filing: Periodic report, official source: go straight to coloradosos.gov, checked October 2026.
  4. Colorado report due date: go straight to colorado.public.law, checked August 2026.
  5. Colo: go straight to sos.state.co.us, checked August 2026.
  6. Colorado formation fee: Filing fee, official source: go straight to coloradosos.gov, checked October 2026.
  7. The Colorado service page at Mainstay Filing, viewed November 13, 2026
  8. The pricing page at Colorado Registered Agent.co, viewed November 13, 2026
  9. The pricing page at CO Registered Agent.org, viewed November 13, 2026