Registered agent required
Yes
sos.state.co.us, read October 2026
Registered agent guide · Colorado
Colorado Registered Agent Rules and Fees (2026): the Official Numbers and the 3 Best Agents
Colorado fact sheet for 2026: when hiring a registered agent, pick Mainstay Filing ($149 a year), Colorado Registered Agent.co ($99 a year) and CO Registered Agent.org ($99 a year), in that order. Every Colorado LLC must keep a registered agent on file. The state bills $25 per year, number 19th of 50.
Facts for Colorado
19th
on a 50-state list of yearly state cost
The lowest total takes number 1 (tied). Open the complete list
Periodic report
$25 / yr
Due date, in the state's own words: last day of the entity's anniversary month. coloradosos.gov, read October 2026
State charges over 1 year
$25
One year of the report, plus any minimum tax
Ranked services for Colorado
The order comes from five criteria, and the two that weigh most are three-year fees and coverage (the method page explains the rest).
1. Mainstay Filing: best for a business that plans to grow
$149 the first year, the same after that
First place goes to Mainstay Filing: it costs $149 a year here and in every other state; renewal is $149.
Three years of provider fees run $150 higher than Colorado Registered Agent.co. Coverage carries 28% of the score and the added filings it handles outweigh that difference.
What the price takes in
- A registered office in Colorado, address provided
- Scans papers served on the company the same business day, at no charge
- Scans the first three government letters each year, no charge
- Serves nonprofits, corporations, LPs and LLPs as well
In its favor
- Works in every state
- $149 per year, the same at renewal
Against it
- $50 per year more than Colorado Registered Agent.co
- Report filing belongs to the formation package
2. Colorado Registered Agent.co: best for a low flat agent price
$99 the first year, the same after that
We put Colorado Registered Agent.co second since a flat $99 yearly price that includes scanned and forwarded papers.
What the price takes in
- A registered office address inside the state
- Papers served on the company are scanned to your login
In its favor
- A yearly price below Mainstay Filing
- Price $99, renewal $99
Against it
- No cover outside this state
- Nothing is done about the periodic report on your behalf
3. CO Registered Agent.org: best for Colorado companies that stay at home
$99 the first year, the same after that
We put CO Registered Agent.org third since a flat $99 yearly price that includes scanned and forwarded papers.
Its prices equal Colorado Registered Agent.co's, so the two are close.
What the price takes in
- A registered office address inside the state
- Papers served on the company are scanned to your login
In its favor
- Price $99, renewal $99
- A yearly price below Mainstay Filing
Against it
- No cover outside this state
- Nothing is done about the periodic report on your behalf
Prices in one place
| No. | Provider | Price per year | Renewal price | Provider fees over 3 years | |
|---|---|---|---|---|---|
| 1 | Mainstay Filing | $149 | $149/yr | $447 | Visit Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | Colorado Registered Agent.co | $99 | $99/yr | $297 | Visit Colorado Registered Agent.coPartner link. We may earn money if you buy. |
| 3 | CO Registered Agent.org | $99 | $99/yr | $297 | Visit CO Registered Agent.orgPartner link. We may earn money if you buy. |
We read each company's price page on November 13, 2026. Colorado's own fees stay the same whichever agent you choose.
Colorado registered agent calculator
Agent prices plus the state's recurring charges (the periodic report from year 2). Formation fees are not counted.
Colorado and the states around it in the ranking
Registered agent rules by state puts every state in order, lowest cost first.
Colorado registered agent requirements, as the statute puts them
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.
Qualifying people and companies: 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. See C.R.S. § 7-90-701.
Colorado's recurring charges
On top of the agent there is the periodic report, due every year at $25, last day of the entity's anniversary month. The late penalty is $50.
Why the Colorado ranking looks like this
Mainstay Filing wins on paperwork inside the price, which counts for 28%, and Colorado Registered Agent.co follows.
Coverage of all fifty states counted for more than Colorado Registered Agent.co on our weights.
Short answers
Are Colorado LLCs obliged to keep a registered agent on file?
Yes. Every LLC must name a registered agent with an in-state street address.
Who can serve as the registered agent for Colorado LLCs?
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.
What does registered agent service cost in Colorado each year?
The agents on this page charge $99 to $149 per year.
What state fees does an LLC pay every year?
The state collects $25 per year on our yearly measure, which is the periodic report at $25 every year.
Which registered agents does this page rank?
Mainstay Filing ($149 a year), Colorado Registered Agent.co ($99 a year) and CO Registered Agent.org ($99 a year), listed from strongest to weakest.
Which registered agent would you choose?
The order is Mainstay Filing, Colorado Registered Agent.co and CO Registered Agent.org.
Where these facts come from
- Backing for the numbers about Colorado Secretary of State is found at sos.state.co.us, which we read in August 2026, and you can check it there.
- Backing for the numbers about Colorado Secretary of State is found at sos.state.co.us, which we read in August 2026, and you can check it there.
- Backing for the numbers about Colorado yearly filing: Periodic report, official source is found at coloradosos.gov, which we read in October 2026, and you can check it there.
- Backing for the numbers about Colorado report due date is found at colorado.public.law, which we read in August 2026, and you can check it there.
- Backing for the numbers about Colo is found at sos.state.co.us, which we read in August 2026, and you can check it there.
- Backing for the numbers about Colorado formation fee: Filing fee, official source is found at coloradosos.gov, which we read in October 2026, and you can check it there.
- Backing for the numbers about Utah Division of Corporations and Commercial Code is found at corporations.utah.gov, which we read in August 2026, and you can check it there.
- Backing for the numbers about Utah Division of Corporations and Commercial Code is found at corporations.utah.gov, which we read in August 2026, and you can check it there.
- Backing for the numbers about Montana Secretary of State fee page and fee is found at sosmt.gov, which we read in October 2026, and you can check it there.
- Backing for the numbers about Montana yearly filing: Annual report: fee, official source is found at sosmt.gov, which we read in October 2026, and you can check it there.
- Backing for the numbers about Montana yearly filing: Annual report: fee, official source is found at sosmt.gov, which we read in October 2026, and you can check it there.
- Backing for the numbers about Michigan Department of Licensing and Regulatory Affairs, Corporations is found at michigan.gov, which we read in August 2026, and you can check it there.
- Backing for the numbers about Michigan Department of Licensing and Regulatory Affairs, Corporations is found at michigan.gov, which we read in August 2026, and you can check it there.
- Backing for the numbers about Oklahoma Secretary of State, Business Filing Department is found at sos.ok.gov, which we read in August 2026, and you can check it there.
- Backing for the numbers about Oklahoma Secretary of State, Business Filing Department is found at sos.ok.gov, which we read in August 2026, and you can check it there.
- Mainstay Filing posted Colorado service page; we read the page November 13, 2026
- Colorado Registered Agent.co posted pricing page; we read the page November 13, 2026
- CO Registered Agent.org posted pricing page; we read the page November 13, 2026