Best LLC Filing

Best LLC Filing › Idaho

Best LLC service in Idaho (2026)

Mainstay Filing is the best overall LLC service in Idaho. The state fee is $100 (Certificate of Organization Limited Liability Company, filed with the Idaho Secretary of State); with Mainstay Filing the three-year total is $697.

  • Official sources, checked October 20, 2026
  • Prices verified October 2026
Best overall in Idaho

Mainstay Filing

Our rating: 4.9 out of 5

$199 / year + $100 state fee

  • LLC formation, prepared and filed
  • Registered agent, all year
  • EIN application (with an SSN or ITIN)
  • Annual report filed every year it is due where the state requires one
  • Compliance reminders and stored documents

Price from the Mainstay Filing pricing and FAQ pages, checked October 21, 2026. State fees are passed through at cost and shown before you pay.

Best-for picks with Idaho costs

  1. Best overall: Mainstay Filing ($597 over 3 years; $697 over 3 years with Idaho costs). One $199 price a year covers the formation filing, registered agent, EIN application and annual report, and it stays $199 at renewal.
  2. Lowest first-year cost: Bizee ($0 for year 1 with an agent; $398 over 3 years with Idaho costs). Its entry package is $0 plus the state fee and the registered agent is free for the first year when you form with it. Why
  3. Lowest three-year cost: Northwest Registered Agent ($289 over 3 years; $389 over 3 years with Idaho costs). A $39 package with the agent included the first year, then a $125 agent, adds up to the smallest service total over three years. Why
  4. Lowest agent price after year 1: Northwest Registered Agent ($125 a year from year 2; $389 over 3 years with Idaho costs). Its registered agent renews at the lowest rate of the five. Why
  5. Most included in one price: Mainstay Filing ($199 a year, all-in; $697 over 3 years with Idaho costs). Formation, agent, EIN application and annual report filing share one yearly price; the others sell the agent, EIN or report filing separately. Why

Idaho rules that affect your choice

State filing fee
$100
Yearly report
Annual report due by the end of the anniversary month; no fee online.
Registered agent
Required. An Idaho resident, or a business entity authorized to do business in Idaho. An assumed business name (DBA) cannot serve.

Questions

What is the best LLC service in Idaho?

Mainstay Filing. In Idaho it totals $697 over three years including the $100 filing fee, with the agent, EIN application and annual reports covered.

What is the cheapest way to start a Idaho LLC?

Filing yourself costs the $100 state fee and you still need a registered agent with a street address in the state. Among services, Bizee is lowest in year 1 and Northwest Registered Agent over three years.

Is a service worth it in Idaho?

Idaho requires a registered agent, which a service provides for you. A service can also file the Annual Report each time it is due.

Sources