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LLC 101 Guide

Unit 1 · Idaho

Starting an LLC in Idaho (2026): 7 Tasks and the 3 Best LLC Services

Mainstay Filing ($199), Idaho Registered Agent.co ($199) and ID Registered Agent.org ($199): that is the order of the services we would hire in Idaho in 2026 for setting up an LLC. Idaho wants $100 when you file and the annual report every year; the 7 tasks below walk through all of it.

Prepared by the LLC 101 Guide instructors

Read this first

Fee to form
$100
legislature.idaho.gov (page read October 2026)
Annual report
No fee
Deadline: last day of the entity's anniversary month
State cost, years 1 to 3
$100
Formation, reports and any minimum tax
Task count
7
Each one explained

You will leave able to

  • Where and how to file a Idaho LLC
  • How to meet the registered agent rule
  • The state filing that recurs
  • The services at the top of the class

Who we would hire in Idaho

Five weighted criteria set the order (see how we grade), and three-year cost and assignments completed count most.

Top of the class

1. Mainstay Filing: best for skipping the annual report paperwork

Our first pick$199 yearly plus the $100 state fee

Mainstay Filing comes out first, and the reason is that one price, $199 a year, pays for the filing, the registered agent and the annual report, and it stays at $199 when you renew.

Against Idaho Registered Agent.co the three-year premium is $200, outweighed by the 31% weight on assignments completed.

It also files the annual report, and Idaho charges no fee for it.

What the price covers

  • We mean: the filing is done for you
  • Registered agent for the whole year
  • Annual report filed for you on time
  • The EIN application is part of the price
  • State fee passed through at cost

What works

  • One flat $199 each year
  • It prepares the EIN application too
  • No jump at renewal ($199)

What to weigh

  • A yearly premium of $100 over Idaho Registered Agent.co
Visit Mainstay FilingPartner link. We may earn money if you buy.

Top of the class

2. Idaho Registered Agent.co: best for a cheap Idaho start

Idaho specialistFormation $199, renewal $99 yearly

Pick number 2 is Idaho Registered Agent.co, where forming the Idaho LLC runs $199 with the agent covered in year one, and the agent renews at $99.

The annual report falls outside the price.

What the price covers

  • Filing made with the state
  • A year of agent service is part of the price

What works

  • First agent year included
  • A small $99 renewal
  • $199 above the state fee

What to weigh

  • The annual report remains your responsibility
  • The EIN application is not included ($99)
Visit Idaho Registered Agent.coPartner link. We may earn money if you buy.

Top of the class

3. ID Registered Agent.org: best for a second Idaho choice

Idaho specialistFormation $199, renewal $99 yearly

Pick number 3 is ID Registered Agent.org, where forming the Idaho LLC runs $199 with the agent covered in year one, and the agent renews at $99.

The annual report falls outside the price.

It lists the same prices as Idaho Registered Agent.co.

What the price covers

  • Filing made with the state
  • A year of agent service is part of the price

What works

  • First agent year included
  • $199 above the state fee
  • A small $99 renewal

What to weigh

  • The annual report remains your responsibility
  • The EIN application is not included ($99)
Visit ID Registered Agent.orgPartner link. We may earn money if you buy.

3 services, side by side

#ServiceFirst yearFrom year twoThree-year total
1Mainstay Filing$199$199/yr$597Visit Mainstay FilingPartner link. We may earn money if you buy.
2Idaho Registered Agent.co$199$99/yr$397Visit Idaho Registered Agent.coPartner link. We may earn money if you buy.
3ID Registered Agent.org$199$99/yr$397Visit ID Registered Agent.orgPartner link. We may earn money if you buy.
Taken from each company's price page on November 13, 2026. None of the rows includes the $100 state fee.

Setting up an LLC in Idaho, task by task

  1. Task 1

    Make sure nobody else has the name

    Open the business search run by the Idaho Secretary of State before anything else; it shows whether the name already sits on the Idaho register.

    Bring two backup names to the search.

  2. Task 2

    Settle who your registered agent will be

    Every LLC must name a registered agent with an in-state street address. An Idaho resident, or a business entity authorized to do business in Idaho. An assumed business name (DBA) cannot serve.

    The address has to be a physical street address in Idaho. P.O. boxes and commercial mailboxes are not accepted.

    This role comes with each recommended service.

    Source: legislature.idaho.gov (page read October 2026)

  3. Task 3

    Do it yourself or hire a service

    With no service the bill is the state's $100 and nothing else. Each of the recommended services adds $199 and does the paperwork for you.

  4. Task 4

    Put together the Certificate of Organization Limited Liability Company

    Here is the key filing: the Certificate of Organization Limited Liability Company goes to the Idaho Secretary of State with $100 (Idaho Code § 30-25-201), and that is what creates the company. The state says it takes About 7 to 10 days.

    Source: legislature.idaho.gov (page read October 2026)

  5. Task 5

    Order the LLC's federal tax number

    Wait for the state's approval, then request an EIN so the LLC can open accounts under its own name. If you hire Mainstay Filing, the EIN application is taken care of.

  6. Task 6

    Prepare the operating agreement

    Ownership and decision rules live in the operating agreement, an internal paper that is no part of the Idaho filing.

  7. Task 7

    Stay in good standing in Idaho

    Idaho wants the annual report every year, due last day of the entity's anniversary month, and there is no fee.

    Source: legislature.idaho.gov (page read October 2026)

The bill

What forReceiverPrice
The formation taskThe state$100
Annual reportThe stateNo fee
Paid helpThe provider$199 to start
State fees over years one to threeThe state$100
Three years of state cost equals the filing fee, plus the reports in years two and three, plus any minimum tax. The sources are listed below.

The reasoning behind the order

Assignments the price completes settled first place in Idaho. It is worth 31% of the grade, and the other 69% comes from course fee across three years, second-year fee, match with the state syllabus and plain pricing.

Doing the annual report for you outweighed the lower price under our weights.

Short answers

What will it cost to register a new LLC with Idaho?

$100, paid to the state. A recommended service adds $199 in year one.

Which form creates the LLC?

The Certificate of Organization Limited Liability Company, which you send to the Idaho Secretary of State.

Is a registered agent required?

Every LLC must name a registered agent with an in-state street address.

How long does Idaho take to process the filing?

Posted processing time: About 7 to 10 days.

What does Idaho require each year?

Calendar note on the annual report: no fee, filed every year, timing as the state words it: last day of the entity's anniversary month.

Can I form the LLC without a service?

You may. File alone for $100 and line up a registered agent as well.

Which LLC service should a first-time founder use?

Mainstay Filing, Idaho Registered Agent.co and ID Registered Agent.org, from highest grade to lowest.

Reading list and sources

  1. Further reading on Idaho yearly filing: Annual report: due date, official: our unit draws on legislature.idaho.gov, which we reopened in October 2026 so you can compare it with the original.
  2. Further reading on Idaho Code § 30-25-201: our unit draws on legislature.idaho.gov, which we reopened in August 2026 so you can compare it with the original.
  3. Further reading on Idaho formation fee: Filing fee, official source: our unit draws on sos.idaho.gov, which we reopened in October 2026 so you can compare it with the original.
  4. Further reading on Idaho formation fee: Filing fee, official source: our unit draws on legislature.idaho.gov, which we reopened in October 2026 so you can compare it with the original.
  5. Further reading on Idaho registered agent statute: our unit draws on legislature.idaho.gov, which we reopened in October 2026 so you can compare it with the original.
  6. Further reading on Processing, official source: our unit draws on sos.idaho.gov, which we reopened in October 2026 so you can compare it with the original.
  7. Idaho service page of Mainstay Filing, taken on November 13, 2026
  8. pricing page of Idaho Registered Agent.co, taken on November 13, 2026
  9. pricing page of ID Registered Agent.org, taken on November 13, 2026