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The Formation Desk

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

LLC service picks · Idaho

3 Best LLC Services in Idaho (2026)

The The Formation Desk call for LLC services in Idaho in 2026: Idaho Registered Agent.co ($199), ID Registered Agent.org ($199) and Mainstay Filing ($199), in that order. Idaho Registered Agent.co takes the call: Idaho formation for $199 on top of the state's fee, year-one agent included, then $99 a year to keep the agent.
Written by The Formation Desk editorial team
1
Best here

1. Idaho Registered Agent.co: best for an Idaho LLC with no plans to expand

Form for $199; the agent is $99 a year after that, plus the state fee

Editorial score 9.4 out of 10

The desk picks Idaho Registered Agent.co: $199 to form, state fee extra, then $99 a year for the agent.

You get an in-state street address as the registered office, and papers served there are scanned into your account.

It leaves the annual report out of its prices, so you send that filing to Idaho yourself every year.

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

In the price

  • Articles prepared and filed
  • The first year as your registered agent

Strengths

  • The first registered agent year is included
  • $199 service fee, then the state fee
  • Year-two agent price: $99

Cons

  • No annual report filing included
  • EIN application will cost you $99 more
Visit Idaho Registered Agent.coPartner link. We may earn money if you buy. Idaho Registered Agent.co up close
2
Low renewal

2. ID Registered Agent.org: best for keeping it local in Idaho

Form for $199; the agent is $99 a year after that, plus the state fee

Editorial score 9.2 out of 10

Runner-up, ID Registered Agent.org: $199 to form, state fee extra, then $99 a year for the agent.

You get an in-state street address as the registered office, and papers served there are scanned into your account.

It leaves the annual report out of its prices, so you send that filing to Idaho yourself every year.

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

In the price

  • Articles prepared and filed
  • The first year as your registered agent

Strengths

  • The first registered agent year is included
  • $199 service fee, then the state fee
  • Year-two agent price: $99

Cons

  • No annual report filing included
  • EIN application will cost you $99 more
Visit ID Registered Agent.orgPartner link. We may earn money if you buy. ID Registered Agent.org up close
3
Best bundle

3. Mainstay Filing: best for formation, agent and annual report in a single price

$199 a year plus the state fee

Editorial score 9.0 out of 10

Third, Mainstay Filing: the formation, the registered agent and the annual report all ride on one $199 yearly price, renewing at $199.

Mainstay files the annual report for you when you renew. Idaho wants no fee, by last day of the entity's anniversary month; Mainstay hands the state's fee through at cost.

Idaho Registered Agent.co undercuts Mainstay Filing by $200 over three years, and that is why Mainstay sits lower on cost.

In the price

  • Your LLC formation, handled
  • Registered agent service for the full year
  • Annual report, filed by Mainstay
  • EIN application handled

Strengths

  • $199 on renewal, nothing extra
  • Idaho's fee passes through at cost
  • One $199 yearly price that takes in the annual report
  • EIN application comes with the package

Cons

  • Its agent renews at $100 a year more than Idaho Registered Agent.co
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 Service fee Year two Good for Visit
1 Idaho Registered Agent.co 9.4 $199 $99/yr An Idaho-only LLC on a shoestring Visit Idaho Registered Agent.coPartner link. We may earn money if you buy.
2 ID Registered Agent.org 9.2 $199 $99/yr An Idaho-only LLC on a shoestring Visit ID Registered Agent.orgPartner link. We may earn money if you buy.
3 Mainstay Filing 9.0 $199 $199/yr Formation, agent and annual report in a single price 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 LLC service costs in 2026: year one, renewal and the three-year bill

Service Year one Year two Year three Bill over three years Annual report filed on your behalf
Idaho Registered Agent.co $199 $99 $99 $397 No
ID Registered Agent.org $199 $99 $99 $397 No
Mainstay Filing $199 $199 $199 $597 Yes

Every price here was read off the company's own pages on November 12, 2026. Idaho's $100 filing fee comes on top of every row and is left out of these totals.

Behind 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 $397 over three years, $200 less than Mainstay Filing. Mainstay would file the annual report too, but an owner can do that alone at no cost, so the lower price won.

The full criteria and weights are on How we rank.

Idaho LLC filing fee and form: the official numbers

It takes $100 to file the Certificate of Organization Limited Liability Company with the Idaho Secretary of State. Every service here adds that fee at cost on top of its own price.

How long the state takes: About 7 to 10 days.

After you form: keeping the Idaho LLC in order

Send in the annual report every year, by last day of the entity's anniversary month. There is no fee. Every LLC must name a registered agent with an in-state street address.

Idaho LLC service: reader questions

What will setting up an LLC in Idaho cost you?

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

What do you file to create the LLC?

The Certificate of Organization Limited Liability Company, sent to the Idaho Secretary of State.

How fast does Idaho turn a new LLC around?

The state says: About 7 to 10 days.

Does an Idaho LLC have to line up a registered agent on day one?

Yes. Idaho expects a registered agent from the start, with a street address inside the state.

What keeps coming due once an Idaho LLC exists?

One filing: the annual report, every year, due last day of the entity's anniversary month, free of charge.

Does the service price take care of the EIN?

Mainstay Filing builds it into the yearly price. Idaho Registered Agent.co and ID Registered Agent.org tack on $99. The IRS never charges for an EIN.

Who is our pick for an LLC service in Idaho?

Idaho Registered Agent.co, since $199 plus the Idaho filing fee, first-year registered agent service included, then $99 a year.

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. Processing, official source, last checked October 2026
  7. Idaho Registered Agent.co: pricing and service pages, as of November 12, 2026
  8. ID Registered Agent.org: pricing and service pages, as of November 12, 2026
  9. Mainstay Filing: Idaho service page, as of November 12, 2026