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Biz Formation Report

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

Registered agents report · Idaho

3 Best Registered Agents in Idaho (2026)

By the Biz Formation Report editorial team

Biz Formation Report ranks registered agents in Idaho for 2026 as Idaho Registered Agent.co ($99 a year), Mainstay Filing ($149 a year) and ID Registered Agent.org ($99 a year), in that order. Idaho Registered Agent.co earns the top grade: $99 a year flat, with online scans of any legal papers served.

No.1

Top pick on this page

1. Idaho Registered Agent.co: best for the lowest annual price on this list

Score9.5out of 10
$99 a year, unchanged at renewal

Top grade, Idaho Registered Agent.co: $99 a year with no renewal increase, the lowest yearly price on this list.

Served legal papers go to the in-state address Idaho Registered Agent.co provides, and you receive scans of them online.

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

What you get

  • The state street address required for the registered office
  • Every legal paper served is scanned for you to read online

Good

  • Costs less per year than Mainstay Filing
  • A flat $99 per year
  • Also forms LLCs and includes the first agent year

Weak spots

  • The annual report filing is left to you
  • Serves Idaho only; other states need a separate agent
Visit Idaho Registered Agent.coPartner link. We may earn money if you buy.
Read the Idaho Registered Agent.co review
No.2

Fifty-state coverage

2. Mainstay Filing: best for all fifty states

Score9.0out of 10
$149 a year, unchanged at renewal

Second grade, Mainstay Filing: $149 a year, flat at renewal, with papers served on the company scanned the same business day at no charge.

A company still to be formed can use Mainstay's $199-a-year package, which files the Idaho paperwork and the annual report.

Idaho Registered Agent.co is $150 cheaper across three years, and that difference lowers Mainstay Filing's cost grade.

What you get

  • A physical address in the state on the public record
  • Legal papers served on the company scanned free, the same business day
  • Scans of the first three government mailings each year, free
  • Compliance reminders

Good

  • Three government mailings a year scanned at no cost
  • Open to LLCs, corporations, LPs, LLPs and nonprofits
  • $149 a year, no renewal increase
  • Served papers scanned within the same business day, free

Weak spots

  • The agent alone costs $50 a year more than Idaho Registered Agent.co
  • The agent-only plan does not file annual reports
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing review
No.3

Local Idaho agent

3. ID Registered Agent.org: best for companies based in Idaho

Score8.7out of 10
$99 a year, unchanged at renewal

Third grade, ID Registered Agent.org: $99 a year with no renewal increase, the lowest yearly price on this list.

Served legal papers go to the in-state address ID Registered Agent.org provides, and you receive scans of them online.

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

What you get

  • A registered office with a physical address in the state
  • Every legal paper served is scanned for you to read online

Good

  • Costs less per year than Mainstay Filing
  • Yearly price of $99, steady at renewal
  • Also forms LLCs and includes the first agent year

Weak spots

  • The annual report filing is left to you
  • Serves Idaho only; other states need a separate agent
Visit ID Registered Agent.orgPartner link. We may earn money if you buy.
Read the ID Registered Agent.org review

Summary of the 3 grades

RankProviderGradePrice per yearRenewal priceBest fitSite
1Idaho Registered Agent.co9.5$99$99/yrThe lowest yearly price we rank hereVisit Idaho Registered Agent.coPartner link. We may earn money if you buy.
2Mainstay Filing9.0$149$149/yrOne agent across fifty statesVisit Mainstay FilingPartner link. We may earn money if you buy.
3ID Registered Agent.org8.7$99$99/yrThe lowest yearly price we rank hereVisit ID Registered Agent.orgPartner link. We may earn money if you buy.

The grades are editorial: Biz Formation Report assigns every mark out of 10 using the criteria on How we rank, not customer ratings.

Idaho registered agent prices, 2026: year one, renewal and three-year outlay

ProviderYear 1Year 2Year 3Three-year outlayRenewal at the same price
Idaho Registered Agent.co$99$99$99$297Yes
Mainstay Filing$149$149$149$447Yes
ID Registered Agent.org$99$99$99$297Yes

All prices were taken from the companies' own websites on November 12, 2026. Idaho's own fees are the same whichever agent is named.

The basis for the order

Of the grade, 32% rests on three-year bill and 32% on what the money buys; renewal handling, local rules match and pricing openness share the remaining 36%. Three-year bill decided Idaho.

Total outlay with Idaho Registered Agent.co over three years: $297, $150 less than Mainstay Filing. An agent needed only in Idaho gains little from fifty-state coverage, so the lower yearly price decided the grade.

Every criterion and weight is listed on How we rank.

Idaho registered agent rules according to Idaho Secretary of State (official)

Every LLC must name a registered agent with an in-state street address. The address has to be a physical street address in Idaho. P.O. boxes and commercial mailboxes are not accepted. Authority: Idaho Code § 30-21-404.

Idaho's annual report: cost, deadline and your agent

The annual report is due from every Idaho LLC every year, by last day of the entity's anniversary month. The state charges no fee. Related notices are mailed to your registered agent.

Idaho registered agent: common questions

Does an Idaho LLC have to maintain a registered agent?

Yes. The state expects every LLC to keep a registered agent on record, and Idaho requires that agent to have a street address inside its borders.

How much do Idaho registered agents charge per year?

Annual charges run from $99 to $149, and prices are unchanged at renewal.

Can the owner be the company's own registered agent?

Yes, provided you meet the state's requirements. An Idaho resident, or a business entity authorized to do business in Idaho. An assumed business name (DBA) cannot serve.

What is the filing deadline for the Idaho annual report?

The deadline: last day of the entity's anniversary month. The state charges nothing.

Which registered agents does this report rank?

Idaho Registered Agent.co ($99 a year), Mainstay Filing ($149 a year) and ID Registered Agent.org ($99 a year), in descending order of grade.

What is the best-value registered agent in Idaho?

Idaho Registered Agent.co: an Idaho-focused agent at $99 a year, supplying an in-state street address for the registered office.

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. Pulled November 12, 2026: Idaho Registered Agent.co, pricing and service pages
  7. Pulled November 12, 2026: Mainstay Filing, Idaho service page
  8. Pulled November 12, 2026: ID Registered Agent.org, pricing and service pages