Skip to content
Researched and written by the Launchwise Review editorial team
Launchwise Review

Rankings of registered agents, LLC formation and foreign registration services in all 50 states.

Launch guide · Idaho · foreign registration

3 Best Foreign Registration Services in Idaho (2026)

Researched and written by the Launchwise Review editorial team
For a 2026 launch in Idaho, Launchwise Review grades foreign registration services this way: ID Registered Agent.org ($199), Mainstay Filing ($199) and Idaho Registered Agent.co ($199). ID Registered Agent.org earns the top grade here: $199 plus the state fee, year-one registered agent service included, then $99 a year for the agent.
1
Number one here

1. ID Registered Agent.org: best for companies adding only Idaho

Pay $199 plus the state fee, then $99 a year for the agent

Our mark 9.1 out of 10

Top grade, ID Registered Agent.org: it registers the company in Idaho for $199, first agent year included, then $99 a year.

You get an in-state street address for the registered office, and any papers served on the company are scanned into your online account.

Three years of its fees come to less than Mainstay Filing charges.

In the price

  • Idaho registration filed for you
  • One year of registered agent service to begin with

Pros

  • Keeps your agent for $99 yearly
  • Registration costs $199 before state fees
  • Your first registered agent year comes at no cost

Less good

  • Idaho only; the home state needs its own agent
  • EIN application costs extra ($99)
Visit ID Registered Agent.orgPartner link. We may earn money if you buy.
Read the ID Registered Agent.org launch review
2
One price, any state

2. Mainstay Filing: best for founders working in several states

Service $199, state fee extra ($299 at checkout); the agent then costs $149 each year

Our mark 8.8 out of 10

Next up is Mainstay Filing: the Idaho registration costs $199, the first registered agent year is free, and later years are $149.

When the free year is over, expect $149 a year for the agent anywhere.

ID Registered Agent.org is $100 lower across three years, which puts Mainstay Filing behind it on cost.

In the price

  • The registration filing, done for you
  • The first registered agent year at no charge
  • Same-business-day scans of legal papers served on the company, free

Pros

  • One price in every state
  • Papers served on the company are scanned the same business day, free
  • Registered agent service is free the first year
  • $199 for the service, with the state fee added

Less good

  • The agent costs $149 a year after year one, $50 above ID Registered Agent.org
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing launch review
3
Best for an Idaho-only company

3. Idaho Registered Agent.co: best for Idaho registrations only

Pay $199 plus the state fee, then $99 a year for the agent

Our mark 8.6 out of 10

Rounding out the list is Idaho Registered Agent.co: it registers the company in Idaho for $199, first agent year included, then $99 a year.

You get an in-state street address for the registered office, and any papers served on the company are scanned into your online account.

Their posted prices and features match, so ID Registered Agent.org and Idaho Registered Agent.co grade as a near tie.

In the price

  • Idaho registration filed for you
  • A first year as your registered agent

Pros

  • Registers the company for $199, state fee extra
  • Then $99 a year to keep the agent
  • Year-one registered agent duty is covered

Less good

  • Idaho only; the home state needs its own agent
  • EIN application costs extra ($99)
Visit Idaho Registered Agent.coPartner link. We may earn money if you buy.
Read the Idaho Registered Agent.co launch review

The 3 grades at a glance

Place Company Launch grade Service price Second year Best fit Go
1 ID Registered Agent.org 9.1 $199 $99/yr The lowest agent renewal on this page Visit ID Registered Agent.orgPartner link. We may earn money if you buy.
2 Mainstay Filing 8.8 $199 $149/yr Founders opening a second state Visit Mainstay FilingPartner link. We may earn money if you buy.
3 Idaho Registered Agent.co 8.6 $199 $99/yr The lowest agent renewal on this page Visit Idaho Registered Agent.coPartner link. We may earn money if you buy.
Launchwise Review assigns every grade out of 10 itself using the criteria on How we rank; no customer ratings go into it.

Idaho foreign registration service cost in 2026: first year, renewals, three-year total

Company Year 1 Year 2 Year 3 Three years, total Agent covered, year one
ID Registered Agent.org $199 $99 $99 $397 Included
Mainstay Filing $199 $149 $149 $497 Free
Idaho Registered Agent.co $199 $99 $99 $397 Included
Prices were copied from each company's own pages on November 12, 2026. Add Idaho's $100 registration fee to any row; it is not in the totals.

What drove the grades

At Launchwise Review, cost to launch and stay and launch paperwork handled each count for 26% of a grade, and renewal behavior, state match and price transparency split the remaining 48%. In Idaho, cost to launch and stay made the call.

ID Registered Agent.org comes to $397 over three years, $100 under Mainstay Filing. Both include year one, so the renewal price broke the tie.

Every criterion and weight is listed on How we rank.

Opening in Idaho as a foreign LLC: fee, form and office

Your registration goes to the Idaho Secretary of State, Business Services, on the Foreign Registration Statement. Budget $100 for the state. Have certificate of existence (certificate of good standing) from the home state in hand too, dated within 90 days of filing; Idaho asks for it.

Calendar item for later: the annual report, due before the end of the month in which the LLC registered.

Before you file, get these together

  • Certificate of existence (certificate of good standing) from the home state, issued within 90 days of your filing date.
  • Your company's exact legal name and the date it was formed at home.
  • A registered agent with a street address in the state; every company graded on this page can serve.
  • The $100 state fee, ready to pay with the filing.
  • A calendar reminder for the annual report.

What skipping Idaho registration can cost you

Without registration, an outside LLC cannot bring a lawsuit in Idaho courts (Idaho Code 30-21-502(b)). Contracts it signs remain valid (Idaho Code 30-21-502(c)).

Quick answers about Idaho foreign registration services

When does an LLC from elsewhere have to register in Idaho?

Once it does business there. Until then it cannot bring a lawsuit in the state's courts.

What should I budget to bring an existing LLC into Idaho?

The state fee is $100; add a service fee of $199.

Do I need a document from my home state first?

Yes, order certificate of existence (certificate of good standing) from the home state and file within 90 days of its date.

Does the foreign LLC still need a registered agent?

Yes. Keep a registered agent with a street address in the state for as long as the company is registered there.

Which foreign registration services are graded on this page?

ID Registered Agent.org ($199), Mainstay Filing ($199) and Idaho Registered Agent.co ($199), top grade first.

Which service is the best way to register a foreign LLC in Idaho?

ID Registered Agent.org, because $199 beyond the state fee gets the company into Idaho, with the agent renewing at $99.

Related pages

Sources and dates

  1. Idaho yearly filing: Annual report: due date, official source, dated October 2026
  2. Idaho Code § 30-25-201, dated August 2026
  3. Idaho formation fee: Filing fee, official source, dated October 2026
  4. Idaho formation fee: Filing fee, official source, dated October 2026
  5. Idaho registered agent statute, dated October 2026
  6. Idaho Secretary of State, Foreign Registration Statement, dated October 2026
  7. Idaho Secretary of State, business FAQ, dated October 2026
  8. Idaho Code 30-21-505, activities that are not doing business, dated October 2026
  9. Idaho Code 30-21-213, annual report, dated October 2026
  10. Withdrawal of Foreign Registration Statement, dated October 2026
  11. Idaho Code 30-21-502, registration to do business, dated November 2026
  12. From ID Registered Agent.org: pricing and service pages, copied November 12, 2026
  13. From Mainstay Filing: Idaho service page, copied November 12, 2026
  14. From Idaho Registered Agent.co: pricing and service pages, copied November 12, 2026