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Straight answers · Idaho

3 Best Registered Agents in Idaho (2026): Who to Ask First

In Idaho for 2026, our answer on registered agents is Mainstay Filing ($149 a year), ID Registered Agent.org ($99 a year) and Idaho Registered Agent.co ($99 a year), ranked from first to last. An agent costs $99 to $149 in the first year and $297 to $447 across three years.

Answered by the Ask About LLC editorial team ·

Four quick answers

Do you have to name an agent?
Yes, name one
Title in the statute
Registered agent
Typical agent price
$99 to $149 per year
Who to ask
Mainstay Filing, ID Registered Agent.org then Idaho Registered Agent.co

Idaho: the ranking

Prices come from each company's own pricing. Here is how we choose.

1Ask this one first

1. Mainstay Filing: best for LLCs that may expand

$149 a year, then $149 when it renews

Why Mainstay Filing at the top? $149 a year follows the company into any new state.

Is it the smallest bill? No: ID Registered Agent.org is $150 less over three years, but it works in Idaho only.

What the price covers

  • A street address on file here
  • Scans of three government letters a year, at no charge
  • Also handles corporations, LPs, LLPs and nonprofits

Good news

  • Usable wherever the LLC registers
  • Flat $149 a year, no change at renewal

The catch

  • $50 a year above the local pick
  • Agent role only, no report filing
Go to Mainstay FilingPartner link. We may earn money if you buy.
2Idaho only

2. ID Registered Agent.org: best for LLCs that never leave the state

$99 a year, then $99 when it renews

Why ID Registered Agent.org in second place? A company that stays in Idaho pays $297 over three years.

What the price covers

  • An in-state street address
  • Legal papers scanned to your account

Good news

  • Below Mainstay Filing on yearly price
  • Flat $99 a year, no change at renewal

The catch

  • Not available outside the state
  • No annual report filing in the package
Go to ID Registered Agent.orgPartner link. We may earn money if you buy.
3Idaho only

3. Idaho Registered Agent.co: best for another local choice

$99 a year, then $99 when it renews

Why Idaho Registered Agent.co in third place? A company that stays in Idaho pays $297 over three years.

It charges the same as ID Registered Agent.org, which makes the order between them a close call.

What the price covers

  • An in-state street address
  • Legal papers scanned to your account

Good news

  • Below Mainstay Filing on yearly price
  • Flat $99 a year, no change at renewal

The catch

  • Not available outside the state
  • No annual report filing in the package
Go to Idaho Registered Agent.coPartner link. We may earn money if you buy.

The picks side by side

#CompanyFirst yearEvery year afterThree years in allWhat the price covers
1Mainstay Filing$149$149/yr$447A street address on file here; scans of three government letters a year, at no charge; Also handles corporations, LPs, LLPs and nonprofitsGo to Mainstay Filing
Partner link. We may earn money if you buy.
2ID Registered Agent.org$99$99/yr$297An in-state street address; legal papers scanned to your accountGo to ID Registered Agent.org
Partner link. We may earn money if you buy.
3Idaho Registered Agent.co$99$99/yr$297An in-state street address; legal papers scanned to your accountGo to Idaho Registered Agent.co
Partner link. We may earn money if you buy.
Service fees only, from each company's prices on November 13, 2026. State fees are the same whichever you pick.

What owners want to know

Do I have to name a registered agent?

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

Legal basis: Idaho Code § 30-21-404. looked up at legislature.idaho.gov in October 2026 to confirm

Can I name anyone?

An Idaho resident, or a business entity authorized to do business in Idaho. An assumed business name (DBA) cannot serve.

If you meet the rule, name yourself and pay no agent fee.

How much does an agent cost?

Expect $99 to $149 a year, or $297 to $447 across three years.

Whichever agent you pick, the state's fees stay the same.

Why does the state want an agent?

The agent signs for lawsuits and state mail addressed to the LLC, using a street address in Idaho.

Papers that arrive with nobody to sign for them can let a case go forward without your LLC. Service of process, explained

What does the LLC owe the state each year?

The annual report costs nothing and comes each year. On timing, the state says: last day of the entity's anniversary month.

looked up at legislature.idaho.gov in October 2026 to confirm

Why is the list in this order?

On chores the price takes care of, worth 29%, Mainstay Filing comes out ahead.

We weigh five questions: what you pay over three years (33%), chores the price takes care of (29%), answers on the price page (14%), what happens at renewal (13%) and room to add states (11%).

Only the first pick works in all fifty states, and that matters the day the LLC registers elsewhere.

See the five questions

What does Idaho require of an agent?

ItemThe answerLook it up
Fee to file the LLC$100looked up at legislature.idaho.gov in October 2026 to confirm
Registered agentYes, name onelooked up at legislature.idaho.gov in October 2026 to confirm
Annual reportNo feelooked up at legislature.idaho.gov in October 2026 to confirm
What the state collects in three years$100Our sum of the rows above
You can check the total by hand: take the filing fee, add two reports and any minimum tax. Costs that have no set amount are left for the text to explain.

Still wondering?

Is it allowed to name myself?

Often you can. If your address and status match what the state demands, nothing stands in the way.

Which addresses does the state accept?

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

What do the picks cost over three years?

For three years you would pay $447 at Mainstay Filing, $297 at ID Registered Agent.org, $297 at Idaho Registered Agent.co

Where do these numbers come from?

State fees come from Idaho's official documents, and service fees come from each company's own pricing page. Both carry dates on this page.

Do I have to use a service?

No. What the law asks for is a filing, and it does not say who has to send it.

What is the best registered agent for Idaho?

Mainstay Filing, because the price is $149 a year here and exactly the same in every other state. After that, ID Registered Agent.org and Idaho Registered Agent.co.

Where did we look this up?

  1. Ask-about note for Idaho yearly filing: Annual report: the state publishes it at legislature.idaho.gov, confirmed October 2026, so you can look it up yourself
  2. Ask-about note for Idaho Code § 30-25-201: the state publishes it at legislature.idaho.gov, confirmed August 2026, so you can look it up yourself
  3. Ask-about note for Idaho formation fee: Filing fee: the state publishes it at sos.idaho.gov, confirmed October 2026, so you can look it up yourself
  4. Ask-about note for Idaho formation fee: Filing fee: the state publishes it at legislature.idaho.gov, confirmed October 2026, so you can look it up yourself
  5. Ask-about note for Idaho registered agent statute: the state publishes it at legislature.idaho.gov, confirmed October 2026, so you can look it up yourself
  6. Mainstay Filing Idaho service page, read November 13, 2026
  7. ID Registered Agent.org pricing page, read November 13, 2026
  8. Idaho Registered Agent.co pricing page, read November 13, 2026