No.1
Number one here
1. Colorado Registered Agent.co: best for a Colorado LLC that intends to stay put
$199 to form, then $99 a year for the agent, with the state fee extra
Score9.5out of 10
First place: Colorado Registered Agent.co. Its Colorado formation is $199 plus the state fee, year-one registered agent service included, then $99 a year.
An in-state street address serves as the registered office, and papers served on the company are scanned into your online account.
The periodic report lies outside its published prices, so you file it with Colorado every year.
Three-year cost is where it gains on Mainstay Filing, and that criterion is weighted heavily.
In the price
- Colorado formation filed for you
- Your registered agent for the first year
Why pick it
- Agent charge of $99 a year after year one
- The first year as registered agent is free
- Forms the LLC for $199 and the state's fee
Weak spots
- The periodic report is not prepared for you
- The EIN application carries a separate fee ($99)
No.2
Formation, agent and report
2. Mainstay Filing: best for the formation, the agent and the periodic report under one charge
$199 a year plus the state fee ($249 due at checkout)
Score9.2out of 10
Second place: Mainstay Filing. $199 a year buys the Colorado filing, registered agent service and the periodic report, and renewal is $199.
At renewal Mainstay prepares and files the periodic report for you. Colorado charges $25 every year for it, due last day of the entity's anniversary month, and lateness adds $50; Mainstay passes the state fee along at cost.
Colorado Registered Agent.co costs $200 less over three years, and Mainstay Filing trails it on that criterion.
In the price
- Preparation and filing of the formation document
- Your registered agent all year long
- Periodic report prepared and filed on your behalf
- EIN application prepared
Why pick it
- Colorado's fee is passed along at cost
- Renews at $199 with nothing added
- One yearly charge of $199 that covers the periodic report
- Covers the EIN application
Weak spots
- Its agent charge after year one is $100 a year above Colorado Registered Agent.co's
No.3
Lower renewal than Mainstay
3. CO Registered Agent.org: best for a filing made only in Colorado
$199 to form, then $99 a year for the agent, with the state fee extra
Score9.1out of 10
Third place: CO Registered Agent.org. Its Colorado formation is $199 plus the state fee, year-one registered agent service included, then $99 a year.
An in-state street address serves as the registered office, and papers served on the company are scanned into your online account.
The periodic report lies outside its published prices, so you file it with Colorado every year.
The published prices and features of Colorado Registered Agent.co and CO Registered Agent.org are identical, which makes the order between them close.
In the price
- Colorado formation filed for you
- Your registered agent for the first year
Why pick it
- $99 a year for the agent from year two
- Year-one registered agent service is included
- Forms the LLC for $199 and the state's fee
Weak spots
- The periodic report is not prepared for you
- The EIN application carries a separate fee ($99)
The 3 rulings in brief
| Rank | Provider | Ruling score | Service charge | Year two | Suited to | Link |
|---|
| 1 | Colorado Registered Agent.co | 9.5 | $199 | $99/yr | A Colorado business holding down its costs | Visit Colorado Registered Agent.coPartner link. We may earn money if you buy. |
|---|
| 2 | Mainstay Filing | 9.2 | $199 | $199/yr | The formation, the agent and the periodic report under one charge | Visit Mainstay FilingPartner link. We may earn money if you buy. |
|---|
| 3 | CO Registered Agent.org | 9.1 | $199 | $99/yr | A Colorado business holding down its costs | Visit CO Registered Agent.orgPartner link. We may earn money if you buy. |
|---|
The Startup Judge assigns each score out of 10 itself, applying the criteria on
How we rank; no customer ratings are used.
Colorado LLC service charges in 2026: year one, renewals and the three-year total
| Provider | Year one | Year two | Year three | Total over three years | Files the periodic report |
|---|
| Colorado Registered Agent.co | $199 | $99 | $99 | $397 | No |
|---|
| Mainstay Filing | $199 | $199 | $199 | $597 | Yes |
|---|
| CO Registered Agent.org | $199 | $99 | $99 | $397 | No |
|---|
Each charge was taken from the provider's own pages on November 12, 2026. Colorado's $50 filing fee is payable in addition to every row below and is not in the totals.
The basis for the order
The Startup Judge weighs charge over three years at 31% and work taken off the founder at 31%; renewal conduct, fit with local rules and pricing in plain sight divide the remaining 38%. In Colorado, charge over three years was the criterion that tipped it.
Over three years Colorado Registered Agent.co totals $397, $200 less than Mainstay Filing. Mainstay would file the periodic report as well, yet an owner can do it alone for the state fee, so the lower charge carried the ruling.
Each criterion and its weight appear on How we rank.
The Colorado LLC filing fee and form (official figures)
To file the Articles of Organization with the Colorado Secretary of State, budget $50. Each provider on this page adds that state fee at cost to its own charge.
Obligations after the Colorado filing is accepted
File the periodic report every year; the date is last day of the entity's anniversary month. $25 goes to the state. Filing late adds $50. Every LLC must name a registered agent with an in-state street address.
Questions on Colorado LLC services
What does it take, in dollars, to form an LLC in Colorado?
The state filing fee is $50; service charges run $199.
What is filed to bring the company into existence?
The Articles of Organization, lodged with the Colorado Secretary of State.
Does a Colorado LLC have to name a registered agent on its formation paperwork?
Yes. The company names a registered agent when it forms and keeps one on file afterward, with a street address in Colorado.
Which recurring filings follow formation?
One: the periodic report, filed every year, due last day of the entity's anniversary month, at a state fee of $25.
Does the quoted price cover the EIN application?
At Mainstay Filing it does; the application sits inside the yearly price. Colorado Registered Agent.co and CO Registered Agent.org add $99 for the application. Applying directly with the IRS carries no fee.
Which Colorado LLC service does the record favor?
Colorado Registered Agent.co, since Colorado formation costs $199 beyond the state's fee, with the registered agent free the first year, and $99 yearly keeps the agent.
The record
- Colorado Secretary of State, on the record as of August 2026
- Colorado Secretary of State, on the record as of August 2026
- Colorado yearly filing: Periodic report, official source, on the record as of October 2026
- Colorado report due date, on the record as of August 2026
- Colo. Rev. Stat. § 7-80-203, on the record as of August 2026
- Colorado formation fee: Filing fee, official source, on the record as of October 2026
- Exhibit: Colorado Registered Agent.co, pricing and service pages, November 12, 2026
- Exhibit: Mainstay Filing, Colorado service page, November 12, 2026
- Exhibit: CO Registered Agent.org, pricing and service pages, November 12, 2026