Foreign registration ratings · Colorado
3 Best Foreign Registration Services in Colorado (2026)
1. Mainstay Filing: best for companies registered in more than one state
$199 for the service, $299 due today, plus state fees, then $149 a year for the agent
Mainstay Filing is rated first: the Colorado registration costs $199, and the registered agent is free for year one and $149 a year after.
Agent service starts free and then runs $149 a year, in any state.
On three-year sums Mainstay is $100 above Colorado Registered Agent.co; the wider coverage justifies that gap in the rating.
What you get
- Registration documents prepared and filed
- Year one as your registered agent, no charge
- Papers served on the company scanned and uploaded within the business day, free of charge
Pros
- Same-business-day scans of service of process, no fee
- $199 service fee, state fee separate
- The same amount in all fifty states
- Registered agent, no charge in year one
Trade-offs
- Agent renewal of $149 is $50 over Colorado Registered Agent.co
2. Colorado Registered Agent.co: best for adding Colorado and nothing else
$199 for the service, plus state fees, then $99 a year for the agent
Colorado Registered Agent.co is rated second: $199 plus the state fee, year-one registered agent service included, then $99 a year for the agent.
The plan lists an in-state street address as the registered office and scans papers served there into your account.
What you get
- The registration filing
- A year of registered agent service at the start
Pros
- Year-two agent amount: $99
- Registration line of $199, plus the state's fee
- The first registered agent year is covered
Trade-offs
- Colorado only; your home state needs its own agent
- EIN application billed at $99
3. CO Registered Agent.org: best for Colorado registrations only
$199 plus the state fee, then the agent at $99 a year after year one
CO Registered Agent.org is rated third: $199 plus the state fee, year-one registered agent service included, then $99 a year for the agent.
The plan lists an in-state street address as the registered office and scans papers served there into your account.
Nothing in the published amounts or features separates Colorado Registered Agent.co from CO Registered Agent.org; take either.
What you get
- The registration filing
- A year of registered agent service at the start
Pros
- $199 to register, state fee on top
- Then $99 yearly for the agent
- The first registered agent year is covered
Trade-offs
- Colorado only; your home state needs its own agent
- EIN application billed at $99
The 3 ratings summarized
| Line | Service | Rating | Service fee | Year two | Best for | Open |
|---|---|---|---|---|---|---|
| 1 | Mainstay Filing | 9.1 | $199 | $149/yr | Companies that register in several states | Visit Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | Colorado Registered Agent.co | 8.9 | $199 | $99/yr | The lowest agent renewal we rank here | Visit Colorado Registered Agent.coPartner link. We may earn money if you buy. |
| 3 | CO Registered Agent.org | 8.7 | $199 | $99/yr | The lowest agent renewal we rank here | Visit CO Registered Agent.orgPartner link. We may earn money if you buy. |
Colorado foreign registration service amounts for 2026: year one, renewal and three-year sum
| Service | Year one | Year two | Year three | Three-year sum | Agent paid for year one |
|---|---|---|---|---|---|
| Mainstay Filing | $199 | $149 | $149 | $497 | Free |
| Colorado Registered Agent.co | $199 | $99 | $99 | $397 | Included |
| CO Registered Agent.org | $199 | $99 | $99 | $397 | Included |
Why the order looks like this
Weights: 27% cost over years one to three, 27% inclusions per price, 46% shared by renewal price and terms, fit with state rules and price clarity. Inclusions per price decided Colorado.
A foreign registration involves two states, and one provider with one amount in both rated highest on coverage, ahead of Colorado Registered Agent.co.
Each criterion and its weight is listed on How we rank.
Colorado foreign LLC registration: amount, form and office
A company from another state registers by lodging the Statement of Foreign Entity Authority with the Colorado Secretary of State, Business Program; the state amount is $100.
Registration adds one recurring line: the periodic report ($25), due once a year, by the end of the second month after your report month.
Have these ready
- Home-state legal name, spelled exactly, and the formation date.
- An in-state registered agent; every service rated here can fill the role.
- $100 to the state, paid with the filing.
- The date of the periodic report and its $25 fee on your calendar.
What skipping Colorado registration costs
Civil penalties may reach $5,000.
Colorado foreign registration service: your questions
Is registration compulsory for an outside LLC doing business in Colorado?
Yes, once it does business there.
What are the costs of foreign registration in Colorado?
$100 to the state plus $199 to the service.
Must a registered agent stay on file after registering?
Yes. A registered agent with a street address in the state stays on record.
Which foreign registration services are rated on this page?
Mainstay Filing ($199), Colorado Registered Agent.co ($199) and CO Registered Agent.org ($199), highest rated first.
What recurring item does a registered foreign LLC carry?
The periodic report, fee $25.
Which foreign registration service holds the top rating in Colorado?
Mainstay Filing, as $199 plus state fees in any state, first-year registered agent service included.
Source lines
- Colorado Secretary of State (ledger date August 2026)
- Colorado Secretary of State (ledger date August 2026)
- Colorado yearly filing: Periodic report, official source (ledger date October 2026)
- Colorado report due date (ledger date August 2026)
- Colo. Rev. Stat. § 7-80-203 (ledger date August 2026)
- Colorado formation fee: Filing fee, official source (ledger date October 2026)
- Colorado Secretary of State, foreign entity FAQ (ledger date October 2026)
- Sample Statement of Foreign Entity Authority (ledger date October 2026)
- Colorado Revised Statutes 2024, Title 7 (ledger date October 2026)
- Registered agent requirements effective July 1, 2025 (ledger date October 2026)
- Mainstay Filing, Colorado service page: amounts read November 12, 2026
- Colorado Registered Agent.co, pricing and service pages: amounts read November 12, 2026
- CO Registered Agent.org, pricing and service pages: amounts read November 12, 2026