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Foreign registration cost calculators + Colorado

3 Best Foreign Registration Services in Colorado (2026): Cost Calculator

Our 2026 calculation puts Mainstay Filing ($199), Colorado Registered Agent.co ($199) and CO Registered Agent.org ($199), in that order, at the top of Colorado foreign registration services. Add $397 to $497 of service charges to the $100 registration fee in Colorado for a three-year result.
Calculated by the Formation Calc editorial team

Result order: The result is 41% three-year cost and 27% filing work covered, with renewal change, break-even year and input clarity filling in the rest. The formula

Results in brief

Foreign filing fee$100coloradosos.gov {input read October 2026, shown in full}
What year one calculates to$199Service side only
Three-year outputs$397 to $497Opening input plus two more
Government charges, 3 years$150Outside the formula
Lines cross inNone in ten yearsOrder never flips

Colorado results

Reading across: year one, the price after that, then the three-year total. Add Colorado's $100 to whichever result you pick.
1

1. Mainstay Filing: best for adding states over time

Leads the results
Year-1 input$199
Input for year 2 on$149/yr
Result at year 3$497
$199 on top of Colorado's $100; renewal $149

Top result: Mainstay Filing. $199 added to the state fee, the first registered agent year at zero, then $149 yearly.

The $100 premium over Colorado Registered Agent.co at year three buys coverage, and coverage decides the order.

No agent charge in year one; $149 a year follows.

Inputs covered

  • Registration handled for you
  • Registered agent free in year one
  • The same fee in each state

Adds up well

  • Helpful if another state follows
  • Registered agent is free in year one
  • $199 added to Colorado's fee

Adds up badly

  • Agent renews at $149, $50 above Colorado Registered Agent.co
2

2. Colorado Registered Agent.co: best for a low registration result

Local result
Year-1 input$199
Input for year 2 on$99/yr
Result at year 3$397
$199 on top of Colorado's $100; renewal $99

Colorado Registered Agent.co places second. Total service fees reach $397 after three years.

Inputs covered

  • Registration delivered to the state office
  • Agent service for the first year

Adds up well

  • Starts at $199
  • Agent included to start
  • Then $99 a year

Adds up badly

  • A second provider is needed at home
3

3. CO Registered Agent.org: best for a nearby provider

Local result
Year-1 input$199
Input for year 2 on$99/yr
Result at year 3$397
$199 on top of Colorado's $100; renewal $99

CO Registered Agent.org places third. Total service fees reach $397 after three years.

Input for input, it ties Colorado Registered Agent.co.

Inputs covered

  • Registration delivered to the state office
  • Agent service for the first year

Adds up well

  • Then $99 a year
  • Starts at $199
  • Agent included to start

Adds up badly

  • A second provider is needed at home

Results over time

RankServiceResult, year 1Result, year 2Result, year 3Result, year 5
1Mainstay Filing$199$348$497$795Open Mainstay FilingPartner link. We may earn money if you buy.
2Colorado Registered Agent.co$199$298$397$595Open Colorado Registered Agent.coPartner link. We may earn money if you buy.
3CO Registered Agent.org$199$298$397$595Open CO Registered Agent.orgPartner link. We may earn money if you buy.
Built from prices published November 13, 2026: year one, then one more renewal in each later column. No service passes another within ten years.

Break-even test

Given your years, the calculator adds the first-year price and each renewal for every service.
Result for 3 years: Mainstay Filing $497, Colorado Registered Agent.co $397, CO Registered Agent.org $397. Lowest at that point: Colorado Registered Agent.co.

Colorado fee list

InputAmountSource
Cost to register$100coloradosos.gov {input read October 2026, shown in full}
Periodic report$25coloradosos.gov {input read October 2026, shown in full}
What the state collects by year 3$150Filing, reports and any tax
Each line cites the state's own publication. Adding the filing, the next two reports and any minimum tax gives the three-year state result.

The working behind Colorado

Weight 27%: filing work in the price. That term separated the top two.

A foreign LLC already spans two states, so a provider covering both came first.

How Colorado describes the foreign LLC registration fee and rules

A company from another state that works in Colorado registers with the Colorado Secretary of State, Business Program using the Statement of Foreign Entity Authority and $100.

Skipping registration can bring fines up to $5,000.

Quoted text: coloradosos.gov {input read October 2026, shown in full}

If you skip the service

$150 is the lowest this calculation goes, because it holds only state fees. The services above put $397 to $497 on top.

About these results

What is the registration fee for a foreign LLC in Colorado?

$100 in state fees, with $199 more for the service in year one.

What do these services calculate to over three years?

Anywhere from $397 to $497 for three years of service.

Which form registers the LLC?

Complete Statement of Foreign Entity Authority and deliver it to the Colorado Secretary of State, Business Program.

What recurring filing follows registration?

The periodic report, charged at $25.

When does one service pass another in total cost?

No break-even within ten years.

Which foreign registration service calculates best for Colorado?

Ranked results: Mainstay Filing, Colorado Registered Agent.co and CO Registered Agent.org.

More calculators

Input sources

  1. Input for Colorado Secretary of State comes from sos.state.co.us, entered August 2026.
  2. Input for Colorado Secretary of State comes from sos.state.co.us, entered August 2026.
  3. Input for Colorado yearly filing: Periodic report comes from coloradosos.gov, entered October 2026.
  4. Input for Colorado report due date comes from colorado.public.law, entered August 2026.
  5. Input for Colo comes from sos.state.co.us, entered August 2026.
  6. Input for Colorado formation fee: Filing fee comes from coloradosos.gov, entered October 2026.
  7. Input for Colorado Secretary of State, foreign comes from coloradosos.gov, entered October 2026.
  8. Input for Sample Statement of Foreign Entity comes from coloradosos.gov, entered October 2026.
  9. Input for Colorado Revised Statutes 2024, Title comes from content.leg.colorado.gov, entered October 2026.
  10. Input for Registered agent requirements effective July comes from coloradosos.gov, entered October 2026.
  11. November 13, 2026 entry: Mainstay Filing Colorado service page
  12. November 13, 2026 entry: Colorado Registered Agent.co pricing page
  13. November 13, 2026 entry: CO Registered Agent.org pricing page