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LLC formation worksheets · Colorado

3 Best LLC Services in Colorado (2026): Worked Prices

Result for Colorado in 2026: Mainstay Filing ($199), Colorado Registered Agent.co ($199) and CO Registered Agent.org ($199), in that order, among LLC formation services. The service rows total $397 to $597 over three years; Colorado separately charges $50 to file, whoever does it.
Worked by the Formation Math editorial team

↓ Sorted by: Score = 42% three-year total + 28% coverage + three smaller terms (details)

Colorado: the numbers worked

Filing charge $50 coloradosos.gov (checked October 2026) as the source
Year-one totals $199 Without the state fee
Totals after three years $397 to $597 Includes both renewals
State fees, summed over 3 years $100 Official amounts only
Year the lines meet Not within ten years No change in order

Colorado rows with the arithmetic

Ranked by score; every price comes from a company page. The $50 state fee is left out of the rows.

1
Wins on value

1. Mainstay Filing: best for never preparing the periodic report yourself

Year 1: $199. Renewal: $199. State fee: separate.
Year-1 price $199
Price after year 1 $199/yr
Sum of 3 years $597

Mainstay Filing takes row one because no other row folds the periodic report into its $199 yearly price.

Colorado Registered Agent.co totals $200 less over three years, but the 28% coverage term favors this row.

Colorado bills $25 for the periodic report; the service files it and passes that fee through at cost.

The price buys

  • The LLC formation filing
  • Registered agent, covered all year
  • Periodic report, filed when due
  • EIN application, handled
  • State fee charged at cost

Adds up

  • $199 for the whole bundle
  • No increase at renewal ($199)
  • The EIN application is handled

Does not add up

  • $100 more per year than Colorado Registered Agent.co after year one
2
Built for Colorado

2. Colorado Registered Agent.co: best for bare-bones formations

$199 to form, $99 each year after
Year-1 price $199
Price after year 1 $99/yr
Sum of 3 years $397

Colorado Registered Agent.co is row 2: three years add up to $397 because the renewal is only $99.

Its price stops before the periodic report.

The price buys

  • Formation paperwork, done for you
  • Year-one agent service

Adds up

  • Agent service free in year one
  • A small $99 renewal
  • Formation priced at $199

Does not add up

  • You prepare the periodic report yourself
  • It charges $99 for the EIN application
3
Built for Colorado

3. CO Registered Agent.org: best for companies that never leave the state

$199 to form, $99 each year after
Year-1 price $199
Price after year 1 $99/yr
Sum of 3 years $397

CO Registered Agent.org is row 3: three years add up to $397 because the renewal is only $99.

Its price stops before the periodic report.

Year one and renewal both match Colorado Registered Agent.co.

The price buys

  • Formation paperwork, done for you
  • Year-one agent service

Adds up

  • Formation priced at $199
  • Agent service free in year one
  • A small $99 renewal

Does not add up

  • You prepare the periodic report yourself
  • It charges $99 for the EIN application

Running sum by year

No. Provider Year 1 total Total at year 2 Total at year 3 Total at year 5
1 Mainstay Filing $199 $398 $597 $995 Visit Mainstay Filing Partner link. We may earn money if you buy.
2 Colorado Registered Agent.co $199 $298 $397 $595 Visit Colorado Registered Agent.co Partner link. We may earn money if you buy.
3 CO Registered Agent.org $199 $298 $397 $595 Visit CO Registered Agent.org Partner link. We may earn money if you buy.

Prices as published on November 13, 2026; year one, then renewals added one at a time. None of the rows cross in ten years.

Check the math yourself

How many years will you keep the company? Choose and compare, with or without the EIN application.

3 years of fees add to Mainstay Filing $597, Colorado Registered Agent.co $397, CO Registered Agent.org $397. The least spent: Colorado Registered Agent.co.

Colorado fee schedule

Term Value Where it comes from
Cost to form $50 coloradosos.gov (checked October 2026) as the source
Periodic report $25 every year coloradosos.gov (checked October 2026) as the source
Penalty if the report is late $50 coloradosos.gov (checked October 2026) as the source
State side, 3 years $100 Total of the rows

Each state row cites its official source. The 3-year total adds the filing, the year-2 and year-3 reports and any minimum tax.

How the ranking worked out

Mainstay Filing wins items covered per dollar, worth 28%, with Colorado Registered Agent.co close behind.

Filing the periodic report for you outweighed Colorado Registered Agent.co's smaller three-year total.

If you need the EIN application, the rows cross in year 2, as Mainstay Filing passes Colorado Registered Agent.co.

Colorado LLC filing fee and rules, from the source

The LLC exists once the Colorado Secretary of State accepts the Articles of Organization along with $50. Every LLC must name a registered agent with an in-state street address.

Source text: coloradosos.gov (checked October 2026) as the source

If you skip the service

The state's fees alone total $100 for three years, which is the floor. The table shows what each service adds ($397 to $597).

Colorado price questions, answered

What does an LLC formation service cost in Colorado?

$199 for year one across our rows, plus the state's $50 fee.

What do the services add up to over three years?

Between $397 to $597 for three years of service.

What is the Colorado fee to file an LLC?

Filing costs $50, and you submit the Articles of Organization.

What does Colorado collect each year after formation?

Periodic report at $25 per year, due last day of the entity's anniversary month.

Does the price include the EIN application?

Mainstay Filing includes it, Colorado Registered Agent.co bills $99 and CO Registered Agent.org bills $99.

In what year does one service pass another in total cost?

The rows do not cross in the first ten years.

Which LLC formation service is best value in Colorado?

Mainstay Filing, which wins on items covered per dollar. Then Colorado Registered Agent.co and CO Registered Agent.org.

Related worksheets

LLC formation worksheets, all 50 states Best LLC services overall The method

Inputs and sources

  1. Colorado Secretary of State comes from sos.state.co.us (August 2026).
  2. Colorado Secretary of State comes from sos.state.co.us (August 2026).
  3. Colorado yearly filing: Periodic report comes from coloradosos.gov (October 2026).
  4. Colorado report due date comes from colorado.public.law (August 2026).
  5. Colo comes from sos.state.co.us (August 2026).
  6. Colorado formation fee: Filing fee comes from coloradosos.gov (October 2026).
  7. The Mainstay Filing Colorado service page supplied the prices on November 13, 2026
  8. The Colorado Registered Agent.co pricing page supplied the prices on November 13, 2026
  9. The CO Registered Agent.org pricing page supplied the prices on November 13, 2026