No legalese · Idaho

3 Best LLC Services in Idaho (2026), Plainly Answered

Our 2026 answer for Idaho: Mainstay Filing ($199), Idaho Registered Agent.co ($199) and ID Registered Agent.org ($199), best first. Idaho charges $100 to file with any of them, and their fees come to $397 to $597 across three years.

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

Short version

Filing fee: $100, once, up front
After year one: Report due, no fee
Registered agent: Required
Our picks, in order: Mainstay Filing, Idaho Registered Agent.co then ID Registered Agent.org

Our Idaho list

Our order, explained on how we choose.

1Our first pick

1. Mainstay Filing: best for a predictable yearly bill

$199 per year plus $100 to the state

Start with Mainstay Filing: one yearly price of $199 covers the filing, the registered agent and each annual report.

Three years cost $200 more than Idaho Registered Agent.co; what the price covers decides it here.

The no-fee annual report is filed for you.

The price covers

Your LLC filed with the state
Registered agent for the full year
Annual report filed on time for you
Help getting the EIN
State fee charged at cost

Upsides

EIN step covered
Renewal stays $199
Flat $199 a year

What to weigh

A $100 yearly premium over Idaho Registered Agent.co

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

2Idaho only

2. Idaho Registered Agent.co: best for a low three-year cost

Formation $199, agent renewal $99

Idaho Registered Agent.co is next: you pay $199 in year one and $99 in each later year.

The annual report stays with you.

The price covers

Formation, done for you
Agent included, year one

Upsides

Agent renews at $99
Formation fee $199
No agent fee in year one

What to weigh

No help with the annual report
EIN help is $99 more

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

3Idaho only

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

Formation $199, agent renewal $99

ID Registered Agent.org is next: you pay $199 in year one and $99 in each later year.

The annual report stays with you.

Its prices match Idaho Registered Agent.co exactly, so either is a sound choice.

The price covers

Formation, done for you
Agent included, year one

Upsides

Agent renews at $99
No agent fee in year one
Formation fee $199

What to weigh

No help with the annual report
EIN help is $99 more

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

The picks side by side

#	Company	Year one	Renewal price	By year three	Includes
1	Mainstay Filing	$199	$199/yr	$597	Your LLC filed with the state; registered agent for the full year; annual report filed on time for you	Visit Mainstay FilingPartner link. We may earn money if you buy.
2	Idaho Registered Agent.co	$199	$99/yr	$397	Formation, done for you; agent included, year one	Visit Idaho Registered Agent.coPartner link. We may earn money if you buy.
3	ID Registered Agent.org	$199	$99/yr	$397	Formation, done for you; agent included, year one	Visit ID Registered Agent.orgPartner link. We may earn money if you buy.

Company prices on November 12, 2026, before state fees.

Questions, answered plainly

What does an LLC cost to set up here?

$100 to the state, plus $199 if a service files it for you.

State fees for the first three years: $100. legislature.idaho.gov (October 2026)

Who receives the filing?

Just one document creates the LLC: the Certificate of Organization Limited Liability Company, submitted to the Idaho Secretary of State.

See Idaho Code § 30-25-201. Processing time: About 7 to 10 days. legislature.idaho.gov (October 2026)

Do I need a registered agent?

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.

legislature.idaho.gov (October 2026)

What does it cost to keep the LLC?

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

legislature.idaho.gov (October 2026)

Can I do it without a service?

You can. Without a service you pay just the state: $100 across three years.

A service adds $397 to $597 over three years for doing the filings and, with Mainstay Filing, the reports.

How was the order decided?

What the price takes off your plate (30% of our weighting) put Mainstay Filing first.

The two biggest criteria are three-year cost and what the price takes off your plate, at 35% and 30%.

We value a filed annual report over a few dollars saved, so the bundle comes first.

Our full method

Idaho requirements checklist

Requirement	Answer	Official source
Fee to form	$100	legislature.idaho.gov (October 2026)
Registered agent	Required	legislature.idaho.gov (October 2026)
Annual report	No fee	legislature.idaho.gov (October 2026)
State total, years 1 to 3	$100	Total of these fees

The three-year line adds the filing fee, the reports in years two and three and any yearly minimum tax. Costs without a fixed amount, such as newspaper publication, are left out.

FAQ

What is the processing time?

About 7 to 10 days.

Does the price cover the EIN?

Mainstay Filing applies for it at no extra cost. Idaho Registered Agent.co adds $99; ID Registered Agent.org adds $99.

What do the picks cost over three years?

Mainstay Filing $597, Idaho Registered Agent.co $397 and ID Registered Agent.org $397 in service fees.

What are the numbers based on?

Official Idaho sources for state fees, company price pages for service fees.

Do I have to use a service?

No law requires one. A service is a convenience.

Who comes first in Idaho?

We rank Mainstay Filing first on what the price takes off your plate, with Idaho Registered Agent.co and ID Registered Agent.org behind it.

Official sources and prices

Idaho yearly filing: Annual report, October 2026 (legislature.idaho.gov)
Idaho Code § 30-25-201, August 2026 (legislature.idaho.gov)
Idaho formation fee: Filing fee, October 2026 (sos.idaho.gov)
Idaho formation fee: Filing fee, October 2026 (legislature.idaho.gov)
Idaho registered agent statute, October 2026 (legislature.idaho.gov)
Processing, official source, October 2026 (sos.idaho.gov)
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