Skip to content
Formation Rated

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

LLC service ratings · Idaho

3 Best LLC Services in Idaho (2026)

From the Formation Rated editorial team
Formation Rated's 2026 ratings for LLC services in Idaho, highest first: Idaho Registered Agent.co ($199), ID Registered Agent.org ($199) and Mainstay Filing ($199). Idaho Registered Agent.co holds the top rating: $199 to form, state fee on top, then $99 a year for the agent.
Position1
Top pick on this page

1. Idaho Registered Agent.co: best for an Idaho LLC that will not expand

$199 to form, $99 a year for the agent, state fee extra

Our score9.1out of 10

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

The plan lists an in-state street address as the registered office and scans papers served there into your account.

The annual report sits outside its published prices; you file it with Idaho yourself every year.

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

What you get

  • Articles prepared and filed
  • A year of registered agent service at the start

Pros

  • Year-two agent amount: $99
  • First-year registered agent service is included
  • Forms the LLC for $199 plus state fees

Trade-offs

  • The annual report is not on its price list
  • EIN application billed at $99
Visit Idaho Registered Agent.coPartner link. We may earn money if you buy. The Idaho Registered Agent.co entry
Position2
Best value here

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

$199 to form, $99 a year for the agent, state fee extra

Our score8.6out of 10

ID Registered Agent.org is rated second: $199 plus the Idaho filing fee, first-year registered agent service included, then $99 a year.

The plan lists an in-state street address as the registered office and scans papers served there into your account.

The annual report sits outside its published prices; you file it with Idaho yourself every year.

Nothing in the published amounts or features separates Idaho Registered Agent.co from ID Registered Agent.org; take either.

What you get

  • Articles prepared and filed
  • A year of registered agent service at the start

Pros

  • Year-two agent amount: $99
  • Forms the LLC for $199 plus state fees
  • First-year registered agent service is included

Trade-offs

  • The annual report is not on its price list
  • EIN application billed at $99
Visit ID Registered Agent.orgPartner link. We may earn money if you buy. The ID Registered Agent.org entry
Position3
All-in price

3. Mainstay Filing: best for formation, agent and annual report on a single line

$199 a year plus the state fee

Our score8.4out of 10

Mainstay Filing is rated third: $199 a year includes the formation filing, the registered agent and the annual report; renewal is $199.

Mainstay files the annual report at each renewal. The state charges nothing, due last day of the entity's anniversary month, and Mainstay passes that fee on at cost.

Idaho Registered Agent.co is $200 cheaper on the three-year sum, and that lowers Mainstay Filing's cost rating.

What you get

  • LLC formation filed on your behalf
  • Registered agent service for the whole year
  • Annual report prepared and filed
  • EIN application

Pros

  • EIN application is in the package
  • Idaho's fee goes through at cost
  • One $199 yearly line that includes the annual report
  • $199 on renewal with no extras

Trade-offs

  • Agent renews $100 a year above Idaho Registered Agent.co
Visit Mainstay FilingPartner link. We may earn money if you buy. The Mainstay Filing entry

The 3 ratings summarized

LineServiceRatingService feeYear twoBest forOpen
1 Idaho Registered Agent.co 9.1 $199 $99/yr An Idaho-only LLC counting every dollar Visit Idaho Registered Agent.coPartner link. We may earn money if you buy.
2 ID Registered Agent.org 8.6 $199 $99/yr An Idaho-only LLC counting every dollar Visit ID Registered Agent.orgPartner link. We may earn money if you buy.
3 Mainstay Filing 8.4 $199 $199/yr Formation, agent and annual report on one line Visit Mainstay FilingPartner link. We may earn money if you buy.
Ratings out of 10 are Formation Rated's own, built from the criteria on How we rank. They are not customer ratings.

Idaho LLC service amounts for 2026: year one, renewal and three-year sum

ServiceYear oneYear twoYear threeThree-year sumAnnual report filed by them
Idaho Registered Agent.co$199$99$99$397No
ID Registered Agent.org$199$99$99$397No
Mainstay Filing$199$199$199$597Yes
Each amount was read from the company's own site on November 12, 2026. Idaho's $100 filing fee is paid in addition to each line and sits outside these sums.

Reasoning behind the order

Cost over years one to three decided the order in Idaho. Of the rating, 27% is cost over years one to three, 27% is inclusions per price and 46% is renewal price and terms, fit with state rules and price clarity.

Idaho Registered Agent.co sums to $397 across three years, $200 below Mainstay Filing. Mainstay would also file the annual report, but an owner can file it directly at no cost, so the lower amount decided the rating.

Each criterion and its weight is listed on How we rank.

Idaho LLC formation: official amount and form

Filing the Certificate of Organization Limited Liability Company costs $100, paid to the Idaho Secretary of State. Each service here passes that amount through at cost, added to its own.

State processing time: About 7 to 10 days.

Ongoing items for a Idaho LLC

Plan on the annual report every year; the date is last day of the entity's anniversary month. No state amount. Every LLC must name a registered agent with an in-state street address.

Idaho LLC service: your questions

What are the total costs to form an LLC in Idaho?

$100 to the state plus $199 to the service.

What is the formation document called?

It is the Certificate of Organization Limited Liability Company, lodged with the Idaho Secretary of State.

How long does Idaho take to process a new LLC?

The filing office reports: About 7 to 10 days.

Is a registered agent a requirement for an Idaho LLC?

Yes. Idaho wants a registered agent on file at all times, with a physical street address in the state.

Which filings recur each year for an Idaho LLC?

One line item: the annual report, every year, due last day of the entity's anniversary month, no fee.

Is the EIN application a separate charge?

Mainstay Filing includes it in the yearly price. Idaho Registered Agent.co and ID Registered Agent.org charge $99 separately. At the IRS the EIN itself costs nothing.

Which LLC service holds the top rating in Idaho?

Idaho Registered Agent.co, as Idaho formation at $199 beyond the state's amount, first agent year included, then $99 a year for the agent.

Source lines

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