Plain and short · Colorado
3 Best Registered Agents in Colorado (2026): Simply Ranked
The short version
- Required?
- Yes, it is required
- Statute's word
- Registered agent
- Typical price
- $99 to $149 per year
- Our pick
- Mainstay Filing, Colorado Registered Agent.co then CO Registered Agent.org
Colorado: the order
The order follows five checks. Three-year cost comes first, then what the price covers. See method.1. Mainstay Filing: best for one price in every state
$149 a year, then $149
First place: Mainstay Filing, since a single yearly price, $149, follows the LLC across state lines.
Choose Colorado Registered Agent.co and save $150 across three years, if the LLC never leaves Colorado.
Includes
- A street address in the state
- Three government mailings a year scanned free
- Serves LLCs, corporations, LPs, LLPs and nonprofits
Good
- One account works in any state
- $149 a year, flat at renewal
Against
- Costs $50 more a year than the local pick
- Agent only. No report filing
2. Colorado Registered Agent.co: best for one-state companies
$99 a year, then $99
Second place: Colorado Registered Agent.co, since an LLC that stays in Colorado pays $99 a year and $99 on renewal.
Includes
- In-state address
- Legal papers scanned online
Good
- A lower yearly bill than the national pick
- Annual price $99, renewal price $99
Against
- A second state needs a second agent
- Your own task list gains the periodic report
3. CO Registered Agent.org: best for another local option
$99 a year, then $99
Third place: CO Registered Agent.org, since an LLC that stays in Colorado pays $99 a year and $99 on renewal.
It charges what Colorado Registered Agent.co charges.
Includes
- In-state address
- Legal papers scanned online
Good
- Annual price $99, renewal price $99
- A lower yearly bill than the national pick
Against
- A second state needs a second agent
- Your own task list gains the periodic report
Prices
| # | Company | Start | Renewal | Three years | Includes | |
|---|---|---|---|---|---|---|
| 1 | Mainstay Filing | $149 | $149/yr | $447 | A street address in the state; three government mailings a year scanned free; Serves LLCs, corporations, LPs, LLPs and nonprofits | Go to Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | Colorado Registered Agent.co | $99 | $99/yr | $297 | In-state address; legal papers scanned online | Go to Colorado Registered Agent.coPartner link. We may earn money if you buy. |
| 3 | CO Registered Agent.org | $99 | $99/yr | $297 | In-state address; legal papers scanned online | Go to CO Registered Agent.orgPartner link. We may earn money if you buy. |
The facts
Is a registered agent required?
Every LLC must name a registered agent with an in-state street address.
Statute: C.R.S. § 7-90-701. from sos.state.co.us, October 2026, kept short
Who qualifies?
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.
A qualifying owner can serve for free.
What does an agent cost?
$99 to $149 a year with the services we rank. $297 to $447 over three years.
State fees do not change with your choice of agent.
What does an agent do?
It is the LLC's contact in Colorado for court papers and state letters.
What matters is that nothing important sits unseen. Service of process, defined
What else is due each year?
The periodic report comes each year and costs $25. In the state's words the filing is due last day of the entity's anniversary month. Note it early.
from coloradosos.gov, October 2026, kept short
Why this order?
Mainstay Filing wins on work included. That check carries 27%.
Two checks carry most of the weight: three-year cost (38%) and work included (27%).
Colorado Registered Agent.co is the smaller bill. It serves Colorado alone.
What Colorado requires of an agent
| Item | Detail | Source |
|---|---|---|
| LLC filing fee | $50 | from coloradosos.gov, October 2026, kept short |
| Registered agent | Yes, it is required | from sos.state.co.us, October 2026, kept short |
| Periodic report | $25 every year | from coloradosos.gov, October 2026, kept short |
| State fees, three years | $100 | The rows above, added |
Questions
May I name myself?
Yes, if you meet the state's rules on who may serve and on the address.
Which addresses count?
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.
What do the picks cost over three years?
Across three years: Mainstay Filing at $447, Colorado Registered Agent.co at $297, CO Registered Agent.org at $297
Where do the figures come from?
State fees come from Colorado's official documents. Service prices come from each company's price page. Both are dated here.
Must I use a service?
No. Owners may file directly. A service saves time and can act as agent.
Which registered agent should I use in Colorado?
Mainstay Filing ranks first. $149 annually buys the same agent service in all fifty states. After it, Colorado Registered Agent.co and CO Registered Agent.org.
Sources
- Charter Simple keeps Colorado Secretary of State on file from sos.state.co.us, confirmed August 2026, and nothing more
- Charter Simple keeps Colorado Secretary of State on file from sos.state.co.us, confirmed August 2026, and nothing more
- Charter Simple keeps Colorado yearly filing: Periodic report on file from coloradosos.gov, confirmed October 2026, and nothing more
- Charter Simple keeps Colorado report due date on file from colorado.public.law, confirmed August 2026, and nothing more
- Charter Simple keeps Colo on file from sos.state.co.us, confirmed August 2026, and nothing more
- Charter Simple keeps Colorado formation fee: Filing fee on file from coloradosos.gov, confirmed October 2026, and nothing more
- Mainstay Filing Colorado service page, read November 13, 2026
- Colorado Registered Agent.co pricing page, read November 13, 2026
- CO Registered Agent.org pricing page, read November 13, 2026