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Foreign registration cost calculators + Idaho

3 Best Foreign Registration Services in Idaho (2026): Cost Calculator

The 2026 result for Idaho foreign registration services: Idaho Registered Agent.co ($199), Mainstay Filing ($199) and ID Registered Agent.org ($199), ranked best value first. Registration in Idaho is $100; the services add $397 to $497 to that over three years.
Calculated by the Formation Calc editorial team

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

Idaho results

Government fee to register$100legislature.idaho.gov {input read October 2026, shown in full}
Year-one band$199Before government fees
Results after 3 years$397 to $497First year and both renewals
State total, years 1 to 3$100Outside the formula
Lines cross inNone in ten yearsOrder holds for ten years

Ranked results

Reading across: year one, the price after that, then the three-year total. Add Idaho's $100 to whichever result you pick.
1

1. Idaho Registered Agent.co: best for a low registration result

Top result
Year-1 input$199
Input for year 2 on$99/yr
Result at year 3$397
$199 for registration, $99 for the agent after that

Idaho Registered Agent.co comes first because it adds $199 to the state fee and throws in a first agent year, then bills $99 yearly.

On the heaviest term, three-year cost, it beats Mainstay Filing.

Inputs covered

  • Registration paperwork, filed
  • Agent service for the first year

Adds up well

  • Year-one agent covered
  • A modest $99 renewal
  • $199 plus the state fee

Adds up badly

  • Nothing outside this state
2

2. Mainstay Filing: best for registering again and again

Any state
Year-1 input$199
Input for year 2 on$149/yr
Result at year 3$497
$199 for registration, $149 for the agent after that

Position 2 is Mainstay Filing: registering in Idaho adds $199 to state fees, with the opening agent year free.

A $100 gap to Idaho Registered Agent.co at year three sets its place.

Agent price from year two: $149 a year, in any state.

Inputs covered

  • Registration paperwork, filed
  • Registered agent free in year one
  • Fifty-state service

Adds up well

  • No agent charge in year one
  • One price in every state
  • $199 plus the state's fee

Adds up badly

  • A higher agent renewal ($149)
3

3. ID Registered Agent.org: best for adding one state

Idaho focus
Year-1 input$199
Input for year 2 on$99/yr
Result at year 3$397
$199 for registration, $99 for the agent after that

ID Registered Agent.org holds position 3 because it adds $199 to the state fee and throws in a first agent year, then bills $99 yearly.

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

Inputs covered

  • Registration paperwork, filed
  • Agent service for the first year

Adds up well

  • Year-one agent covered
  • $199 plus the state fee
  • A modest $99 renewal

Adds up badly

  • Nothing outside this state

Totals at 1, 2, 3 and 5 years

RankServiceResult, year 1Result, year 2Result, year 3Result, year 5
1Idaho Registered Agent.co$199$298$397$595Open Idaho Registered Agent.coPartner link. We may earn money if you buy.
2Mainstay Filing$199$348$497$795Open Mainstay FilingPartner link. We may earn money if you buy.
3ID Registered Agent.org$199$298$397$595Open 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. The order of results holds for ten years.

Cost calculator

Results for 1 to 5 years. State fees are not an input here because every service owes the same ones.
3 years of fees calculate to Idaho Registered Agent.co $397, Mainstay Filing $497, ID Registered Agent.org $397. Lowest at that point: Idaho Registered Agent.co.

State fees with sources

InputAmountSource
Foreign registration filing$100legislature.idaho.gov {input read October 2026, shown in full}
What the state collects by year 3$100Sum of the inputs above
Each line cites the state's own publication. Adding the filing, the next two reports and any minimum tax gives the three-year state result.

Notes on the order

Idaho Registered Agent.co wins calculated three-year cost, worth 41%, with Mainstay Filing close behind.

Idaho Registered Agent.co takes the cost term at $397 over three years, and Mainstay Filing would need $100 more.

How Idaho describes the foreign LLC registration fee and rules

Out-of-state LLCs deliver the Foreign Registration Statement to the Idaho Secretary of State, Business Services with $100. The filing asks for certificate of existence (certificate of good standing) from the home state dated within 90 days.

Skipping registration can bring a bar on starting lawsuits in Idaho (Idaho Code 30-21-502(b)).

Quoted text: archive.sos.idaho.gov {input read October 2026, shown in full}

If you skip the service

$100 is the lowest this calculation goes, because it holds only state fees. The services above put $397 to $497 on top.

About these results

What is the registration fee for a foreign LLC in Idaho?

$100 as the official fee, where our results add $199.

What do these services calculate to over three years?

$397 to $497 in service fees, with state fees on top.

Which form registers the LLC?

Complete Foreign Registration Statement and deliver it to the Idaho Secretary of State, Business Services.

Does the Idaho filing need a document from the home state?

Yes, one less than 90 days old: certificate of existence (certificate of good standing) from the home state.

What recurring filing follows registration?

The annual report, with no charge.

When does one service pass another in total cost?

Not in ten years: the order of the running totals does not change.

Which foreign registration service calculates best for Idaho?

By the five-term formula the Idaho order is Idaho Registered Agent.co, Mainstay Filing and ID Registered Agent.org, led by Idaho Registered Agent.co on calculated three-year cost.

More calculators

Input sources

  1. Idaho yearly filing: Annual report is entered from legislature.idaho.gov (October 2026).
  2. Idaho Code § 30-25-201 is entered from legislature.idaho.gov (August 2026).
  3. Idaho formation fee: Filing fee is entered from sos.idaho.gov (October 2026).
  4. Idaho formation fee: Filing fee is entered from legislature.idaho.gov (October 2026).
  5. Idaho registered agent statute is entered from legislature.idaho.gov (October 2026).
  6. Idaho Secretary of State, Foreign is entered from archive.sos.idaho.gov (October 2026).
  7. Idaho Secretary of State, business is entered from sos.idaho.gov (October 2026).
  8. Idaho Code 30-21-505, activities that is entered from legislature.idaho.gov (October 2026).
  9. Idaho Code 30-21-213, annual report is entered from legislature.idaho.gov (October 2026).
  10. Withdrawal of Foreign Registration Statement is entered from archive.sos.idaho.gov (October 2026).
  11. Idaho Code 30-21-502, registration to is entered from legislature.idaho.gov (November 2026).
  12. Idaho Registered Agent.co pricing page, entered November 13, 2026
  13. Mainstay Filing Idaho service page, entered November 13, 2026
  14. ID Registered Agent.org pricing page, entered November 13, 2026