Jump to the results
Formation CalcRun the numbers on LLC formation, agents and foreign registration.

Registered agent cost calculators + Idaho

3 Best Registered Agents in Idaho (2026): Cost Calculator

The 2026 result for Idaho registered agents: Mainstay Filing ($149/yr), Idaho Registered Agent.co ($99/yr) and ID Registered Agent.org ($99/yr), ranked best value first. First-year inputs run $99 to $149, which produces $297 to $447 by year three.
Calculated by the Formation Calc editorial team

Result order: Formula: 41% cost, 27% coverage, three lesser terms. Details

Idaho results

Mandatory?Yeslegislature.idaho.gov {input read October 2026, shown in full}
What year one calculates to$99 to $149One year of agent service
Three-year band$297 to $447Year one plus two renewals
Annual reportNo chargelegislature.idaho.gov {input read October 2026, shown in full}
CrossoverTotals stay apartOrder never flips

The Idaho calculations

Every input is copied from the company's own pricing page. A different agent leaves the state charge as it was.
1

1. Mainstay Filing: best for the same input in every state

Best value
Year-1 input$149
Renewal input$149/yr
Result at year 3$447
$149 in year one, then $149 in each year after

Mainstay Filing comes first because the input stays $149 a year no matter where the company registers next.

The $150 premium over Idaho Registered Agent.co at year three buys coverage, and coverage decides the order.

Inputs covered

  • A street address located in the state
  • Up to three government mailings a year, scanned free
  • Covers LLCs, corporations, LPs, LLPs and nonprofits

Adds up well

  • Fifty-state reach
  • Year 1 $149, year 2 $149

Adds up badly

  • Adds $50 extra annually
  • Does not file the yearly report
2

2. Idaho Registered Agent.co: best for a single state to cover

One-state service
Year-1 input$99
Renewal input$99/yr
Result at year 3$297
$99 in year one, then $99 in each year after

Idaho Registered Agent.co places second. $99 a year, then $99, for an LLC that remains in a single state.

Inputs covered

  • A street address inside the state
  • Web copies of legal papers

Adds up well

  • $99 a year, no change at renewal
  • Undercuts Mainstay Filing every year

Adds up badly

  • No help outside the state
  • You file the annual report on your own
3

3. ID Registered Agent.org: best for a local backup

One-state service
Year-1 input$99
Renewal input$99/yr
Result at year 3$297
$99 in year one, then $99 in each year after

ID Registered Agent.org places third. $99 a year, then $99, for an LLC that remains in a single state.

The year-one and renewal inputs both equal Idaho Registered Agent.co's.

Inputs covered

  • A street address inside the state
  • Web copies of legal papers

Adds up well

  • Undercuts Mainstay Filing every year
  • $99 a year, no change at renewal

Adds up badly

  • No help outside the state
  • You file the annual report on your own

Results over time

RankServiceResult, year 1Result, year 2Result, year 3Result, year 5
1Mainstay Filing$149$298$447$745Open Mainstay FilingPartner link. We may earn money if you buy.
2Idaho Registered Agent.co$99$198$297$495Open Idaho Registered Agent.coPartner link. We may earn money if you buy.
3ID Registered Agent.org$99$198$297$495Open ID Registered Agent.orgPartner link. We may earn money if you buy.
Service fees only, calculated from each company's prices as of November 13, 2026. No break-even appears within ten years.

The calculator

How long will the company stay open? Enter the years and compare.
3 years of fees calculate to Mainstay Filing $447, Idaho Registered Agent.co $297, ID Registered Agent.org $297. Lowest of the results: Idaho Registered Agent.co.

Idaho state fees (official)

InputAmountSource
Formation charge$100legislature.idaho.gov {input read October 2026, shown in full}
Annual reportNo chargelegislature.idaho.gov {input read October 2026, shown in full}
State side, 3 years$100Filing, reports and any tax
The state's three-year figure is a sum of three kinds of charge: the filing fee, the reports owed in years two and three, and a minimum tax where the state levies one. Costs with no fixed amount, such as publication in a newspaper, are noted in the text and left out of the sum.

Why result one is first

Mainstay Filing did better than Idaho Registered Agent.co on filing work in the price, a 27% term.

Idaho Registered Agent.co costs less here, but reach across fifty states weighed more.

The Idaho registered agent rule as the state states it (Idaho Secretary of State)

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. Governing section: Idaho Code § 30-21-404.

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

Source wording: legislature.idaho.gov {input read October 2026, shown in full}

State fees only

Owners who meet the address rule may serve for free, while the services above put a price of $99 to $149 a year on the convenience.

Idaho cost questions

What does an Idaho registered agent charge per year?

$99 to $149 a year on this page.

What do three years of agent service cost?

$297 to $447 across the services, not counting state fees.

Is a registered agent a must for an Idaho LLC?

Yes, it does. Every LLC must name a registered agent with an in-state street address.

Can the owner be the registered agent?

Yes, when you qualify under the rules listed here.

What does the state charge the LLC each year?

Plug in nothing every year for the annual report, due last day of the entity's anniversary month.

When does one service pass another in total cost?

They hold one order for ten years.

Which registered agent calculates best in Idaho?

Mainstay Filing, which wins on filing work in the price. Idaho Registered Agent.co and ID Registered Agent.org follow.

Input sources

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