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Filing Verdict

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

Foreign registration verdict · Idaho

3 Best Foreign Registration Services in Idaho (2026)

Filing Verdict's 2026 verdict on foreign registration services in Idaho: Mainstay Filing ($199), Idaho Registered Agent.co ($199) and ID Registered Agent.org ($199), in that order. Mainstay Filing takes first place: $199 plus the state's own fee, with the registered agent free for the first year and one price in every state.
The Filing Verdict editorial team
Our top pick in Idaho
Spot 1

1. Mainstay Filing: best for companies working in several states

$199 service fee, state fee added ($299 today); $149 a year from year two

9.4Editorial score
out of 10

Mainstay Filing wins here: it prepares the Idaho registration for $199 and serves as your registered agent, free in year one, then $149 a year.

The first agent year is free; from then on it runs $149 a year anywhere.

The three-year bill is $100 higher than Idaho Registered Agent.co's, and the wider coverage is worth that to us.

What you get

  • The registration filing, done for you
  • First-year registered agent service, free
  • Any legal papers served on the company are scanned the same business day for free

What we like

  • Registered agent service free in year one
  • Same-business-day scans of served papers, free
  • Service fee of $199, plus the state's fee
  • One price in all fifty states

Cons

  • After year one its agent runs $149 a year, $50 above Idaho Registered Agent.co
Visit Mainstay FilingPartner link. We may earn money if you buy. Our full Mainstay Filing verdict
Low renewal
Spot 2

2. Idaho Registered Agent.co: best for companies adding only Idaho

Service fee $199, state fee extra; agent $99 yearly after year one

9.2Editorial score
out of 10

Second place goes to Idaho Registered Agent.co: $199 plus the state fee, with a year of registered agent service included, then $99 a year for the agent.

The plan gives the company an in-state street address as its registered office, and papers served on the company are scanned to your online account.

What you get

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

What we like

  • Service fee $199, state fee extra
  • The first registered agent year is included
  • Then $99 a year for agent service

Cons

  • Covers Idaho only; your home state needs its own agent
  • The EIN application is billed separately ($99)
Visit Idaho Registered Agent.coPartner link. We may earn money if you buy. Our full Idaho Registered Agent.co verdict
Lower renewal than Mainstay
Spot 3

3. ID Registered Agent.org: best for Idaho registrations only

Service fee $199, state fee extra; agent $99 yearly after year one

8.9Editorial score
out of 10

Third place goes to ID Registered Agent.org: $199 plus the state fee, with a year of registered agent service included, then $99 a year for the agent.

The plan gives the company an in-state street address as its registered office, and papers served on the company are scanned to your online account.

On price and features Idaho Registered Agent.co and ID Registered Agent.org match line for line, which makes this a close call between safe choices.

What you get

  • Idaho registration filed for you
  • Year-one registered agent service

What we like

  • A $199 service fee plus the registration fee
  • First-year registered agent service comes with it
  • $99 per year keeps the agent from year two

Cons

  • Covers Idaho only; your home state needs its own agent
  • The EIN application is billed separately ($99)
Visit ID Registered Agent.orgPartner link. We may earn money if you buy. Our full ID Registered Agent.org verdict

The 3 verdicts at a glance

No.ServiceVerdict scoreService feeYear twoBest forVisit
1Mainstay Filing9.4$199$149/yrCompanies registered in several states Visit Mainstay FilingPartner link. We may earn money if you buy.
2Idaho Registered Agent.co9.2$199$99/yrThe lowest agent renewal here Visit Idaho Registered Agent.coPartner link. We may earn money if you buy.
3ID Registered Agent.org8.9$199$99/yrThe lowest agent renewal here Visit ID Registered Agent.orgPartner link. We may earn money if you buy.
The marks out of 10 are editorial: Filing Verdict sets them from the criteria on How we rank, and customers do not rate anything here.

Idaho foreign registration service prices for 2026: year one, renewals and three years

ServiceYear 1Year 2Year 3Total, 3 yearsAgent covered in year one
Mainstay Filing$199$149$149$497Free
Idaho Registered Agent.co$199$99$99$397Included
ID Registered Agent.org$199$99$99$397Included
Prices were read from each company's own pages on November 12, 2026. Idaho's $100 registration fee goes on top of every row and is not counted in these totals.

Why this order

Filing Verdict gives total over three years and paperwork the price handles 35% each, and renewal behavior, match to the state and up-front pricing split the rest. In Idaho the order was settled by paperwork the price handles.

Registering in a second state involves two states, so one provider with one price in both scored best on coverage, ahead of Idaho Registered Agent.co.

The full list of criteria and weights is on How we rank.

Idaho foreign LLC registration: the fee, the form and the filing office

The company registers with the Idaho Secretary of State, Business Services by filing the Foreign Registration Statement. The state fee is $100. Idaho also asks for certificate of existence (certificate of good standing) from the home state, issued within 90 days of filing.

Afterwards the company files the annual report, due before the end of the month in which the LLC registered.

Before you file: a checklist

  • Certificate of existence (certificate of good standing) from the home state, issued within 90 days before you file.
  • The exact legal name from the home state, and the date the company was formed there.
  • A registered agent with a street address in the state; each service on this page can act in that role.
  • The $100 state fee, paid with the filing.
  • A calendar entry for the annual report.

What skipping Idaho registration can cost

Until it registers, an out-of-state LLC cannot bring suit in Idaho courts (Idaho Code 30-21-502(b)). Contracts it signs stay valid (Idaho Code 30-21-502(c)).

Idaho foreign registration service: questions answered

Does Idaho require an out-of-state LLC to register?

Yes, once it transacts business there. Until it registers, it cannot bring suit in the state's courts.

What does foreign registration cost in Idaho?

The state fee is $100, and the service fee is $199.

Does Idaho want a certificate from my home state?

Yes. It asks for certificate of existence (certificate of good standing) from the home state, issued within 90 days of filing.

Is a registered agent required once I have registered?

Yes. The company still needs a registered agent here, with a street address in the state.

Which foreign registration services are ranked on this page?

Mainstay Filing ($199), Idaho Registered Agent.co ($199) and ID Registered Agent.org ($199), from first place to last.

Which foreign registration service is the best pick in Idaho?

Mainstay Filing, because $199 on top of the state fee, the same in any state, with the first year of registered agent service included.

Related pages

Sources and dates

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