Foreign registration ratings · Idaho
3 Best Foreign Registration Services in Idaho (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: $199 on top of the state's fee, with year one as registered agent free and the same amount in every state.
Agent service starts free and then runs $149 a year, in any state.
On three-year sums Mainstay is $100 above ID Registered Agent.org; 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
- The same amount in all fifty states
- Registered agent, no charge in year one
- $199 service fee, state fee separate
Trade-offs
- Agent renewal of $149 is $50 over ID Registered Agent.org
2. ID Registered Agent.org: best for adding Idaho and nothing else
Service fee $199, state fee on top; agent $99 a year after that
ID Registered Agent.org 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
- Registration prepared and filed
- A year of registered agent service at the start
Pros
- Registers the company for $199 plus state fees
- Includes year one as your registered agent
- Then $99 yearly for the agent
Trade-offs
- Idaho only; your home state needs its own agent
- EIN application billed at $99
3. Idaho Registered Agent.co: best for Idaho registrations only
Service fee $199, state fee on top; agent $99 a year after that
Idaho Registered Agent.co 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.
On amounts and features alone, ID Registered Agent.org and Idaho Registered Agent.co are the same, which makes the order between them a close call.
What you get
- Registration prepared and filed
- The first year as your registered agent
Pros
- $199 to register, state fee on top
- Registered agent service for year one is included
- Year-two agent amount: $99
Trade-offs
- Idaho 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 | 9.4 | $199 | $149/yr | Companies that register in several states | Visit Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | ID Registered Agent.org | 8.9 | $199 | $99/yr | The lowest agent renewal we rank here | Visit ID Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | Idaho Registered Agent.co | 8.7 | $199 | $99/yr | The lowest agent renewal we rank here | Visit Idaho Registered Agent.coPartner link. We may earn money if you buy. |
Idaho 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 |
| ID Registered Agent.org | $199 | $99 | $99 | $397 | Included |
| Idaho Registered Agent.co | $199 | $99 | $99 | $397 | Included |
Why the order looks like this
Formation Rated puts 27% on cost over years one to three, 27% on inclusions per price and the other 46% on renewal price and terms, fit with state rules and price clarity. In Idaho the order came down to inclusions per price.
A foreign registration involves two states, and one provider with one amount in both rated highest on coverage, ahead of ID Registered Agent.org.
Each criterion and its weight is listed on How we rank.
Idaho foreign LLC registration: amount, form and office
A company from another state registers by lodging the Foreign Registration Statement with the Idaho Secretary of State, Business Services; the state amount is $100. Idaho also needs certificate of existence (certificate of good standing) from the home state, issued inside 90 days of the filing.
Registration adds one recurring line: the annual report, due before the end of the month in which the LLC registered.
Have these ready
- Certificate of existence (certificate of good standing) from the home state, issued within 90 days before the filing.
- 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 annual report on your calendar.
What skipping Idaho registration costs
An unregistered outside LLC may not sue in Idaho courts until it registers (Idaho Code 30-21-502(b)). Contracts it signs remain valid (Idaho Code 30-21-502(c)).
Idaho foreign registration service: your questions
Is registration compulsory for an outside LLC doing business in Idaho?
Yes, once it does business there. An unregistered company cannot bring suit in the state's courts.
What are the costs of foreign registration in Idaho?
$100 to the state plus $199 to the service.
Must the filing include a home-state certificate for Idaho?
Yes: certificate of existence (certificate of good standing) from the home state, with an issue date within 90 days.
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), ID Registered Agent.org ($199) and Idaho Registered Agent.co ($199), highest rated first.
Which foreign registration service holds the top rating in Idaho?
Mainstay Filing, as the Idaho registration costs $199, and the registered agent is free for year one and $149 a year after.
Source lines
- Idaho yearly filing: Annual report: due date, official source (ledger date October 2026)
- Idaho Code § 30-25-201 (ledger date August 2026)
- Idaho formation fee: Filing fee, official source (ledger date October 2026)
- Idaho formation fee: Filing fee, official source (ledger date October 2026)
- Idaho registered agent statute (ledger date October 2026)
- Idaho Secretary of State, Foreign Registration Statement (ledger date October 2026)
- Idaho Secretary of State, business FAQ (ledger date October 2026)
- Idaho Code 30-21-505, activities that are not doing business (ledger date October 2026)
- Idaho Code 30-21-213, annual report (ledger date October 2026)
- Withdrawal of Foreign Registration Statement (ledger date October 2026)
- Idaho Code 30-21-502, registration to do business (ledger date November 2026)
- Mainstay Filing, Idaho service page: amounts read November 12, 2026
- ID Registered Agent.org, pricing and service pages: amounts read November 12, 2026
- Idaho Registered Agent.co, pricing and service pages: amounts read November 12, 2026