LLC service scorecard · Colorado

3 Best LLC Services in Colorado (2026)

On the Formation Scorecard 2026 scorecard for LLC services in Colorado the order reads Mainstay Filing ($199), Colorado Registered Agent.co ($199) and CO Registered Agent.org ($199). Mainstay Filing posts the top score: $199 a year takes in the formation filing, your registered agent and the periodic report, with renewal at $199.

Researched and written by the Formation Scorecard editorial team Card updated November 12, 2026

Rank #1 Our top pick in Colorado

1. Mainstay Filing: best for a bundle of formation, agent and periodic report

9.5 Editor score out of 10

$199 a year plus the state's fee, $249 due at checkout

Mainstay Filing leads the card: one $199 charge each year bundles the Colorado formation, the registered agent and the periodic report.

Each renewal includes Mainstay's filing of the periodic report. Colorado bills $25 every year for it, due last day of the entity's anniversary month, and missing the date costs $50; Mainstay passes the state's fee along at cost.

Mainstay's three-year total sits $200 above Colorado Registered Agent.co's, which the extra coverage earns back in our scoring.

What you get

Your formation paperwork, filed
A year-round registered agent
The periodic report, filed for you each time
EIN application included

Strengths

Colorado's state fee is added at cost
EIN application bundled in
One $199 yearly price that also files the periodic report
Renews at $199 with nothing added

Watch for

Its agent renews $100 a year above Colorado Registered Agent.co

Visit Mainstay FilingPartner link. We may earn money if you buy. Mainstay Filing: the full write-up

Rank #2 Lower renewal than Mainstay

2. Colorado Registered Agent.co: best for a Colorado LLC that stays small

9.1 Editor score out of 10

$199 to form, then $99 a year for the agent, state fee extra

Colorado Registered Agent.co takes second spot: $199 plus the Colorado filing fee, first-year registered agent service included, then $99 yearly.

The plan puts the company at an in-state street address and scans papers served on it to your online account.

Its prices leave out the periodic report, so you send that filing to Colorado yourself every year.

What you get

The formation filing
Year-one registered agent service included

Strengths

Agent at $99 a year from year two
Year one as your registered agent is included
Formation at $199, with the state fee added

Watch for

Leaves the periodic report with you
$99 extra for the EIN application

Visit Colorado Registered Agent.coPartner link. We may earn money if you buy. Colorado Registered Agent.co: the full write-up

Rank #3 Lower renewal than Mainstay

3. CO Registered Agent.org: best for staying local in Colorado

8.9 Editor score out of 10

$199 to form, then $99 a year for the agent, state fee extra

CO Registered Agent.org takes third spot: $199 plus the Colorado filing fee, first-year registered agent service included, then $99 yearly.

The plan puts the company at an in-state street address and scans papers served on it to your online account.

Its prices leave out the periodic report, so you send that filing to Colorado yourself every year.

Price for price and feature for feature, Colorado Registered Agent.co and CO Registered Agent.org match, which leaves the order between them a narrow call.

What you get

The formation filing
Year-one registered agent service included

Strengths

$99 yearly for the agent after year one
Formation at $199, with the state fee added
First-year registered agent service included

Watch for

Leaves the periodic report with you
$99 extra for the EIN application

Visit CO Registered Agent.orgPartner link. We may earn money if you buy. CO Registered Agent.org: the full write-up

The 3 entries on one card

Place	Service	Card score	Service fee	Year two	Best for	Go
1	Mainstay Filing	9.5	$199	$199/yr	Formation, agent and periodic report together	Visit Mainstay FilingPartner link. We may earn money if you buy.
2	Colorado Registered Agent.co	9.1	$199	$99/yr	A Colorado-only LLC on a tight budget	Visit Colorado Registered Agent.coPartner link. We may earn money if you buy.
3	CO Registered Agent.org	8.9	$199	$99/yr	A Colorado-only LLC on a tight budget	Visit CO Registered Agent.orgPartner link. We may earn money if you buy.

Every number out of 10 is an editorial mark from Formation Scorecard, produced with the criteria on How we rank, not a customer rating.

Colorado LLC service cost in 2026: first year, renewal and the three-year tally

Service	First year	Second year	Third year	Three-year tally	Periodic report included
Mainstay Filing	$199	$199	$199	$597	Yes
Colorado Registered Agent.co	$199	$99	$99	$397	No
CO Registered Agent.org	$199	$99	$99	$397	No

Each price comes from the company's own site, read on November 12, 2026. Add Colorado's $50 filing fee to each row; the tally above leaves it out.

Reading the order

Formation Scorecard scores cost across three years and coverage of the price at 25% each. Renewal terms, state-by-state fit and pricing clarity account for the other 50%. In Colorado the tie was broken by coverage of the price.

Colorado asks for a report each year at a $25 fee, and a late one adds $50. The Mainstay price covers that filing, while Colorado Registered Agent.co's leaves it to you, so the coverage points beat Colorado Registered Agent.co's cost advantage.

Every criterion and weight appears on How we rank.

Colorado LLC formation: the official fee and form

The Articles of Organization carries a $50 fee at the Colorado Secretary of State. Every service here passes that fee through at cost, on top of its own price.

Keeping the Colorado LLC current

The periodic report arrives every year and is due last day of the entity's anniversary month. It carries a $25 fee. Late filings add $50. Every LLC must name a registered agent with an in-state street address.

Colorado LLC service: quick questions

How much will an LLC in Colorado cost to set up?

Expect $50 for the state plus $199 for the service.

What is the name of the formation form?

It is the Articles of Organization, and the Colorado Secretary of State receives it.

Must a Colorado LLC appoint a registered agent when it forms?

Yes. A registered agent with a street address in Colorado has to be on file from the start.

What does a Colorado LLC have to file after formation?

One item, the periodic report, due every year (last day of the entity's anniversary month) with a $25 fee.

Is the EIN application part of the price?

Mainstay Filing folds it into the yearly price. Colorado Registered Agent.co and CO Registered Agent.org add $99 for it. Applying for an EIN costs nothing at the IRS itself.

Which LLC service tops the card for Colorado?

Mainstay Filing, since a $199 yearly price pays for the Colorado formation, a year of registered agent service and the periodic report, then renews at $199.

Keep reading

Where the figures come from

Colorado Secretary of State, as of August 2026
Colorado Secretary of State, as of August 2026
Colorado yearly filing: Periodic report, official source, as of October 2026
Colorado report due date, as of August 2026
Colo. Rev. Stat. § 7-80-203, as of August 2026
Colorado formation fee: Filing fee, official source, as of October 2026
Read on November 12, 2026: Colorado service page for Mainstay Filing
Read on November 12, 2026: pricing and service pages for Colorado Registered Agent.co
Read on November 12, 2026: pricing and service pages for CO Registered Agent.org