No legalese · Idaho

3 Best Registered Agents in Idaho (2026), Plainly Answered

Our 2026 answer for Idaho: Mainstay Filing ($149 a year), Idaho Registered Agent.co ($99 a year) and ID Registered Agent.org ($99 a year), best first. Three years of agent service add up to $297 to $447, starting at $99 to $149.

By the Plain Charter editorial team · Reviewed and updated November 12, 2026

Quick answer

Required?: Yes
Legal term: Registered agent
Service price: $99 to $149 a year
Best picks: Mainstay Filing, Idaho Registered Agent.co then ID Registered Agent.org

The Idaho picks

Prices come from each company's own pricing. How we choose.

1Top pick

1. Mainstay Filing: best for companies that may expand

Annual price $149, renewal price $149

First choice: Mainstay Filing. The reason is simple: $149 a year buys an agent here and in any state you add later.

Three years cost $150 more than Idaho Registered Agent.co; reach across states decides it here.

The price covers

A street address in the state
Three government mailings a year scanned free
Covers LLCs, corporations, LPs, LLPs and nonprofits

Upsides

Works in every state
Flat $149 a year

What to weigh

Higher by $50 a year
Just the agent role

Visit Mainstay FilingPartner link. We may earn money if you buy.

2Idaho specialist

2. Idaho Registered Agent.co: best for tight budgets

Annual price $99, renewal price $99

Idaho Registered Agent.co comes second: $99 a year buys an in-state agent.

The price covers

An in-state street address
Online copies of legal papers

Upsides

Smaller yearly bill than Mainstay Filing
Flat $99 a year

What to weigh

A second state means a second agent
Annual report: your job

Visit Idaho Registered Agent.coPartner link. We may earn money if you buy.

3Idaho specialist

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

Annual price $99, renewal price $99

ID Registered Agent.org comes third: $99 a year buys an in-state agent.

Price for price it ties Idaho Registered Agent.co.

The price covers

An in-state street address
Online copies of legal papers

Upsides

Smaller yearly bill than Mainstay Filing
Flat $99 a year

What to weigh

A second state means a second agent
Annual report: your job

Visit ID Registered Agent.orgPartner link. We may earn money if you buy.

The picks side by side

#	Company	Year one	Each year after	Three years	You get
1	Mainstay Filing	$149	$149/yr	$447	A street address in the state; three government mailings a year scanned free; Covers LLCs, corporations, LPs, LLPs and nonprofits	Visit Mainstay FilingPartner link. We may earn money if you buy.
2	Idaho Registered Agent.co	$99	$99/yr	$297	An in-state street address; online copies of legal papers	Visit Idaho Registered Agent.coPartner link. We may earn money if you buy.
3	ID Registered Agent.org	$99	$99/yr	$297	An in-state street address; online copies of legal papers	Visit ID Registered Agent.orgPartner link. We may earn money if you buy.

Each company's published prices, November 12, 2026. State fees come on top and do not change by pick.

The plain answers

Do I need a registered agent?

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

Under Idaho Code § 30-21-404. from legislature.idaho.gov · October 2026

Can anyone be the agent?

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

Qualify, and you can fill the role yourself for free.

How much per year?

$99 to $149 a year from the services we'd use, or $297 to $447 over three years.

Your choice of agent leaves state fees unchanged.

What will the agent handle?

It accepts court papers and state mail for your LLC at an address in Idaho.

What matters most is that you hear about every document quickly. What is service of process?

What does the LLC owe the state each year?

The annual report, once a year, with no fee. It is due last day of the entity's anniversary month.

from legislature.idaho.gov · October 2026

How did you rank them?

Mainstay Filing wins on what the price takes off your plate, our 30% criterion.

Most of our weighting sits on three-year cost and what the price takes off your plate.

We weigh where a service works, and only the first pick works everywhere.

Our full method

Idaho requirements checklist

What	Answer	From
Cost to file	$100	from legislature.idaho.gov · October 2026
Registered agent	Yes	from legislature.idaho.gov · October 2026
Annual report	No fee	from legislature.idaho.gov · October 2026
Paid to the state by year 3	$100	Computed from the rows

Filing fee, the reports in years two and three, then any minimum tax: that is the three-year line.

A few more questions

Can I be my own agent?

Yes, if your address and status fit the state rule.

What address does the agent need?

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

Over three years, what does each charge?

Mainstay Filing $447, Idaho Registered Agent.co $297 and ID Registered Agent.org $297

Where do you get the fees?

State fees from Idaho's official sources, cited next to each figure; service prices from each company's own pricing.

Must I hire anyone?

It is optional; the state charges the same either way.

Who is your first choice in Idaho?

First Mainstay Filing, then Idaho Registered Agent.co and ID Registered Agent.org.

Official sources and prices

legislature.idaho.gov · Idaho yearly filing: Annual report · October 2026
legislature.idaho.gov · Idaho Code § 30-25-201 · August 2026
sos.idaho.gov · Idaho formation fee: Filing fee · October 2026
legislature.idaho.gov · Idaho formation fee: Filing fee · October 2026
legislature.idaho.gov · Idaho registered agent statute · October 2026
Prices from the Mainstay Filing Idaho service page on November 12, 2026
Prices from the Idaho Registered Agent.co pricing page on November 12, 2026
Prices from the ID Registered Agent.org pricing page on November 12, 2026