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Biz Formation Report

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

LLC formation report · Idaho

3 Best LLC Services in Idaho (2026)

By the Biz Formation Report editorial team

Biz Formation Report ranks LLC services in Idaho for 2026 as Idaho Registered Agent.co ($199), ID Registered Agent.org ($199) and Mainstay Filing ($199), in that order. Idaho Registered Agent.co earns the top grade: $199 plus the Idaho filing fee, year-one registered agent service included, then $99 a year.

No.1

Our top pick in Idaho

1. Idaho Registered Agent.co: best for an Idaho LLC that expects to stay put

Score9.1out of 10
$199 for formation, then $99 a year for the agent, plus the state fee

Top grade, Idaho Registered Agent.co: forming in Idaho costs $199 beyond the state's fee, with the first agent year included, and keeping the agent runs $99 a year.

The plan seats the company at an in-state street address and posts scans of papers served there to your online account.

The annual report is outside its published prices, so you submit it to Idaho yourself every year.

Over three years it costs less than Mainstay Filing, and cost is one of our two heaviest criteria.

What you get

  • Formation prepared and filed
  • Year-one registered agent service

Good

  • Forms the LLC at $199 plus filing fees
  • Registered agent service included for year one
  • Then $99 per year for the agent

Weak spots

  • Does not handle the annual report
  • The EIN application costs $99 extra
Visit Idaho Registered Agent.coPartner link. We may earn money if you buy.
Read the Idaho Registered Agent.co review
No.2

Best value here

2. ID Registered Agent.org: best for local Idaho formation

Score8.9out of 10
$199 for formation, then $99 a year for the agent, plus the state fee

Second grade, ID Registered Agent.org: forming in Idaho costs $199 beyond the state's fee, with the first agent year included, and keeping the agent runs $99 a year.

The plan seats the company at an in-state street address and posts scans of papers served there to your online account.

The annual report is outside its published prices, so you submit it to Idaho yourself every year.

Prices and features do not separate Idaho Registered Agent.co from ID Registered Agent.org; either works.

What you get

  • Formation prepared and filed
  • Year-one registered agent service

Good

  • Registered agent service included for year one
  • Then $99 per year for the agent
  • Forms the LLC at $199 plus filing fees

Weak spots

  • Does not handle the annual report
  • The EIN application costs $99 extra
Visit ID Registered Agent.orgPartner link. We may earn money if you buy.
Read the ID Registered Agent.org review
No.3

Report filing included

3. Mainstay Filing: best for formation, agent and annual report on one invoice

Score8.6out of 10
$199 a year plus the state fee

Third grade, Mainstay Filing: the formation filing, the registered agent and the annual report come to $199 a year, renewing at $199.

The renewal covers the annual report, which Mainstay files for you. Idaho collects no fee, with a deadline of last day of the entity's anniversary month; Mainstay passes the state's fee through at cost.

Idaho Registered Agent.co is $200 cheaper across three years, and that difference lowers Mainstay Filing's cost grade.

What you get

  • The LLC formation, done for you
  • Registered agent service all year
  • The annual report prepared and filed
  • The EIN application

Good

  • Idaho's state fee is passed through at cost
  • A single $199 yearly price, including the annual report
  • Includes the EIN application
  • Renewal is $199 with no add-ons

Weak spots

  • Its agent renews at $100 a year more than Idaho Registered Agent.co's
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing review

Summary of the 3 grades

RankProviderGradeService feeYear twoBest fitSite
1Idaho Registered Agent.co9.1$199$99/yrAn Idaho-only LLC keeping costs downVisit Idaho Registered Agent.coPartner link. We may earn money if you buy.
2ID Registered Agent.org8.9$199$99/yrAn Idaho-only LLC keeping costs downVisit ID Registered Agent.orgPartner link. We may earn money if you buy.
3Mainstay Filing8.6$199$199/yrFormation, agent and annual report on one invoiceVisit Mainstay FilingPartner link. We may earn money if you buy.

Grades out of 10 are Biz Formation Report's own editorial judgment, based on the criteria explained on How we rank. They are not customer ratings.

Idaho LLC service prices, 2026: year one, renewal and three-year outlay

ProviderYear 1Year 2Year 3Three-year outlayAnnual report done for you
Idaho Registered Agent.co$199$99$99$397No
ID Registered Agent.org$199$99$99$397No
Mainstay Filing$199$199$199$597Yes

All prices were taken from the companies' own websites on November 12, 2026. Idaho's $100 filing fee is payable on top of each row and is not part of these totals.

The basis for the order

The grading method assigns 32% to three-year bill and 32% to what the money buys, with renewal handling, local rules match and pricing openness taking 36%. For Idaho, three-year bill decided it.

Total outlay with Idaho Registered Agent.co over three years: $397, $200 less than Mainstay Filing. Mainstay would add the annual report filing, but owners can file it alone at no cost, so the lower price decided the grade.

Every criterion and weight is listed on How we rank.

Idaho LLC filing fee and form, from official sources

The Idaho Secretary of State charges $100 for the Certificate of Organization Limited Liability Company. Each provider here adds that fee at cost on top of its own.

Processing time at the state: About 7 to 10 days.

What a Idaho LLC owes after formation

Expect the annual report every year, with a deadline of last day of the entity's anniversary month. It costs nothing to file. Every LLC must name a registered agent with an in-state street address.

Idaho LLC service: common questions

What does Idaho charge to start an LLC, all in?

$100 goes to the state and $199 to the service.

Which document starts the LLC?

the Idaho Secretary of State accepts the Certificate of Organization Limited Liability Company.

What is the processing time for a Idaho LLC filing?

According to the filing office: About 7 to 10 days.

Is a registered agent mandatory for an Idaho LLC?

Yes. Idaho requires one, with a physical street address in the state, from the day the LLC exists.

What recurring paperwork follows an LLC in Idaho?

A single item: the annual report, filed every year (last day of the entity's anniversary month) at no charge.

Does the service price cover the EIN?

The Mainstay Filing yearly price covers it. Idaho Registered Agent.co and ID Registered Agent.org list it at $99. The IRS does not charge for issuing an EIN.

What is the best LLC service in Idaho, by our report?

Idaho Registered Agent.co: $199 for formation on top of the state fee, then $99 a year for the agent.

Read next

Source notes

  1. Idaho yearly filing: Annual report: due date, official source (verified October 2026)
  2. Idaho Code § 30-25-201 (verified August 2026)
  3. Idaho formation fee: Filing fee, official source (verified October 2026)
  4. Idaho formation fee: Filing fee, official source (verified October 2026)
  5. Idaho registered agent statute (verified October 2026)
  6. Processing, official source (verified October 2026)
  7. Pulled November 12, 2026: Idaho Registered Agent.co, pricing and service pages
  8. Pulled November 12, 2026: ID Registered Agent.org, pricing and service pages
  9. Pulled November 12, 2026: Mainstay Filing, Idaho service page