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LLC formation worksheets · Idaho

3 Best LLC Services in Idaho (2026): Worked Prices

The 2026 math for Idaho LLC formation services gives Mainstay Filing ($199), Idaho Registered Agent.co ($199) and ID Registered Agent.org ($199), ranked best value first. Add up three years of service fees and the rows land between $397 to $597. The $100 filing fee at Idaho gets added to every row alike.
Worked by the Formation Math editorial team

↓ Sorted by: Cost first (42%), items covered second (28%), three smaller checks after. See the working

Results box

Formation fee $100 legislature.idaho.gov (checked October 2026) as the source
Year 1 spread $199 Without the state fee
Three-year results $397 to $597 Service fees only, 3 years
State sum, years 1 to 3 $100 Left out of the score
First crossover Does not occur No row ever passes another

Rows ranked by value

Each row shows year one, the price after that and the three-year sum. Idaho's $100 comes on top.

1
Wins on value

1. Mainstay Filing: best for upkeep handled for you

$199 yearly plus $100 for the state
Year-1 price $199
Price after year 1 $199/yr
Sum of 3 years $597

Mainstay Filing comes out on top. Working: $199 a year pays for the filing, the registered agent and the annual report, so year two is $199 again.

Its three-year total is $200 higher than Idaho Registered Agent.co's, and the extra paperwork it covers is worth more than that in the score.

It files the annual report for you, and there is no state fee on it.

The price buys

  • The LLC formation filing
  • Registered agent, covered all year
  • Annual report, filed when due
  • EIN application, handled
  • State fee at the exact amount

Adds up

  • A single yearly price of $199
  • The EIN application is handled
  • $199 in year two

Does not add up

  • From year two it costs $100 above Idaho Registered Agent.co
2
Single-state plan

2. Idaho Registered Agent.co: best for the smallest three-year sum

$199 to form, $99 each year after
Year-1 price $199
Price after year 1 $99/yr
Sum of 3 years $397

Idaho Registered Agent.co scores second. Working: forming costs $199 with year-one agent service in it, and later years run $99.

The annual report is not in its price.

The price buys

  • Formation handled start to finish
  • Year-one agent service

Adds up

  • Agent included to start
  • Formation priced at $199
  • Then $99 a year

Does not add up

  • Filing the annual report is left to you
  • EIN application costs $99 more
3
Single-state plan

3. ID Registered Agent.org: best for a second in-state filer

$199 to form, $99 each year after
Year-1 price $199
Price after year 1 $99/yr
Sum of 3 years $397

ID Registered Agent.org scores third. Working: forming costs $199 with year-one agent service in it, and later years run $99.

The annual report is not in its price.

Its prices equal Idaho Registered Agent.co's in every column.

The price buys

  • Formation handled start to finish
  • Year-one agent service

Adds up

  • Agent included to start
  • Then $99 a year
  • Formation priced at $199

Does not add up

  • Filing the annual report is left to you
  • EIN application costs $99 more

Cumulative cost, year by year

No. Provider Year 1 total Total at year 2 Total at year 3 Total at year 5
1 Mainstay Filing $199 $398 $597 $995 Visit Mainstay Filing Partner link. We may earn money if you buy.
2 Idaho Registered Agent.co $199 $298 $397 $595 Visit Idaho Registered Agent.co Partner link. We may earn money if you buy.
3 ID Registered Agent.org $199 $298 $397 $595 Visit ID Registered Agent.org Partner link. We may earn money if you buy.

Prices as published on November 13, 2026; year one, then renewals added one at a time. No break-even shows up in ten years.

Break-even check

Change the years to redo the addition, with the EIN application as an option.

Adding up 3 years: Mainstay Filing $597, Idaho Registered Agent.co $397, ID Registered Agent.org $397. Lowest of the totals: Idaho Registered Agent.co.

Official state amounts

Term Value Where it comes from
Fee to form the LLC $100 legislature.idaho.gov (checked October 2026) as the source
Annual report No fee legislature.idaho.gov (checked October 2026) as the source
Sum of state fees, years 1 to 3 $100 Total of the rows

Our state figure adds three things: the filing, two years of reports and a minimum tax where there is one. Variable costs like publication stay out.

Notes on the order

Mainstay Filing wins items covered per dollar, worth 28%, with Idaho Registered Agent.co close behind.

Idaho wants the annual report every year, so a price that files it scored above a lower price that does not.

Count the EIN application and Idaho Registered Agent.co has the lower total from year 2.

Idaho LLC filing fee and rules, from the source

$100 is the price of the filing that creates the LLC, the Certificate of Organization Limited Liability Company, delivered to the Idaho Secretary of State. Every LLC must name a registered agent with an in-state street address.

Source text: legislature.idaho.gov (checked October 2026) as the source

Without a service

With no service, three years cost $100 in state fees. Each service adds its own row, $397 to $597 over the same period.

Idaho price questions, answered

What does an LLC formation service cost in Idaho?

$199 for year one across our rows, plus the state's $100 fee.

What do the services add up to over three years?

Service totals for three years: $397 to $597.

What is the Idaho fee to file an LLC?

$100 with the Certificate of Organization Limited Liability Company.

What does Idaho collect each year after formation?

The recurring item is the annual report, free annually (last day of the entity's anniversary month).

Does the price include the EIN application?

Mainstay Filing includes it, Idaho Registered Agent.co bills $99 and ID Registered Agent.org bills $99.

In what year does one service pass another in total cost?

Not within ten years; no row passes another.

Which LLC formation service is best value in Idaho?

By the five-part score the Idaho rows run Mainstay Filing, Idaho Registered Agent.co and ID Registered Agent.org, led by Mainstay Filing on items covered per dollar.

Related worksheets

LLC formation worksheets, all 50 states Best LLC services overall The method

Inputs and sources

  1. For Idaho yearly filing: Annual report: legislature.idaho.gov, checked October 2026.
  2. For Idaho Code § 30-25-201: legislature.idaho.gov, checked August 2026.
  3. For Idaho formation fee: Filing fee: sos.idaho.gov, checked October 2026.
  4. For Idaho formation fee: Filing fee: legislature.idaho.gov, checked October 2026.
  5. For Idaho registered agent statute: legislature.idaho.gov, checked October 2026.
  6. The Mainstay Filing Idaho service page supplied the prices on November 13, 2026
  7. The Idaho Registered Agent.co pricing page supplied the prices on November 13, 2026
  8. The ID Registered Agent.org pricing page supplied the prices on November 13, 2026