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The Formation Desk

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

Registered agent picks · Idaho

3 Best Registered Agents in Idaho (2026)

The The Formation Desk call for registered agents in Idaho in 2026: Idaho Registered Agent.co ($99 a year), ID Registered Agent.org ($99 a year) and Mainstay Filing ($149 a year), in that order. Idaho Registered Agent.co takes the call: $99 a year, holding on renewal, the lowest yearly price on this list.
Written by The Formation Desk editorial team
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Number one here

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

$99 a year, and it holds on renewal

Editorial score 9.2 out of 10

The desk picks Idaho Registered Agent.co: an Idaho specialist at $99 a year, with an in-state street address as the registered office.

Idaho Registered Agent.co puts an in-state street address on file for the company and scans served legal papers into your account.

Add up three years and it undercuts Mainstay Filing, and cost is one of our two heaviest criteria.

In the price

  • A physical address in the state, as the registered office
  • You get online scans of any papers served on the company

Strengths

  • Costs $99 a year, the same each year
  • Also forms LLCs and includes the first agent year
  • Yearly price below Mainstay Filing's

Cons

  • The annual report is your job
  • Idaho only; you need another agent elsewhere
Visit Idaho Registered Agent.coPartner link. We may earn money if you buy. Idaho Registered Agent.co up close
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Best local option

2. ID Registered Agent.org: best for Idaho companies

$99 a year, and it holds on renewal

Editorial score 8.7 out of 10

Runner-up, ID Registered Agent.org: an Idaho specialist at $99 a year, with an in-state street address as the registered office.

ID Registered Agent.org puts an in-state street address on file for the company and scans served legal papers into your account.

The published prices and features do not separate Idaho Registered Agent.co from ID Registered Agent.org; take whichever you like.

In the price

  • A physical address in the state, as the registered office
  • You get online scans of any papers served on the company

Strengths

  • Yearly price below Mainstay Filing's
  • A $99 plan with no renewal hike
  • Also forms LLCs and includes the first agent year

Cons

  • The annual report is your job
  • Idaho only; you need another agent elsewhere
Visit ID Registered Agent.orgPartner link. We may earn money if you buy. ID Registered Agent.org up close
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One agent, every state

3. Mainstay Filing: best for every state

$149 a year, and it holds on renewal

Editorial score 8.4 out of 10

Third, Mainstay Filing: $149 a year for an agent that goes wherever the company does, plus the first three government mailings each year scanned free.

Haven't formed yet? Mainstay's $199-a-year package handles the Idaho filing and the annual report.

Idaho Registered Agent.co undercuts Mainstay Filing by $150 over three years, and that is why Mainstay sits lower on cost.

In the price

  • An in-state street address on the public record
  • Any service of process scanned for free and uploaded that business day
  • Your first three government mailings each year, scanned free
  • Compliance reminders

Strengths

  • First three government mailings each year, scanned free
  • Free scans of served papers on the same business day
  • $149 a year and it holds on renewal
  • Works for LLCs, corporations, LPs, LLPs and nonprofits alike

Cons

  • $50 a year more than Idaho Registered Agent.co for agent service alone
  • Annual reports need the formation package
Visit Mainstay FilingPartner link. We may earn money if you buy. Mainstay Filing up close

The desk's 3 picks in brief

Pick Service Desk score Price a year Renewal Good for Visit
1 Idaho Registered Agent.co 9.2 $99 $99/yr The lowest yearly price we rank here Visit Idaho Registered Agent.coPartner link. We may earn money if you buy.
2 ID Registered Agent.org 8.7 $99 $99/yr The lowest yearly price we rank here Visit ID Registered Agent.orgPartner link. We may earn money if you buy.
3 Mainstay Filing 8.4 $149 $149/yr One agent that covers every state Visit Mainstay FilingPartner link. We may earn money if you buy.

The scores out of 10 are the desk's own, drawn from the criteria on How we rank. They are not customer ratings.

What a Idaho registered agent costs in 2026: year one, renewal and the three-year bill

Service Year one Year two Year three Bill over three years Price holds on renewal
Idaho Registered Agent.co $99 $99 $99 $297 Yes
ID Registered Agent.org $99 $99 $99 $297 Yes
Mainstay Filing $149 $149 $149 $447 Yes

Every price here was read off the company's own pages on November 12, 2026. Idaho charges the same state fees whichever agent you name.

What tipped the order

The desk's method puts 33% on spend over three years and 33% on work the price removes, and 34% across what renewal looks like, fit with the state and plain price display. For Idaho, spend over three years did the deciding.

Idaho Registered Agent.co comes to $297 over three years, $150 less than Mainstay Filing. If Idaho is your only state, fifty-state coverage does little for you, and the lower yearly price wins.

The full criteria and weights are on How we rank.

Idaho registered agent rules straight from 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. The law behind it: Idaho Code § 30-21-404.

Idaho's annual report: what it costs, when it is due, who gets the notice

Idaho LLCs send in the annual report every year, due last day of the entity's anniversary month. The state charges nothing. Notices about it land with your registered agent.

Idaho registered agent: reader questions

Do you need a registered agent to run an Idaho LLC?

You do. Idaho wants a registered agent on file for every LLC, and the agent must have a street address in the state.

What should you expect to pay a Idaho registered agent?

Plan on $99 to $149 a year, and the price holds when it renews.

Could you serve as your own registered agent?

You can if the state's rules allow it. An Idaho resident, or a business entity authorized to do business in Idaho. An assumed business name (DBA) cannot serve.

When does the Idaho annual report have to go in?

Get it in by last day of the entity's anniversary month. The state takes no fee.

Which registered agents did the desk rank here?

Idaho Registered Agent.co ($99 a year), ID Registered Agent.org ($99 a year) and Mainstay Filing ($149 a year), best pick first.

Who is our pick for registered agent in Idaho?

Idaho Registered Agent.co, since $99 a year flat, with scans of served legal papers sent to your account.

Read next

Where the numbers came from

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