Plain and short · Idaho
3 Best Foreign Registration Services in Idaho (2026), Kept Simple
The short version
- State fee to register
- $100
- Home certificate?
- Yes (90 day age limit)
- Next
- No fee, annual report
- Ranked first
- Mainstay Filing, Idaho Registered Agent.co then ID Registered Agent.org
Idaho: the order
Why this order? The checks are explained here.1. Mainstay Filing: best for registering in many states
Service $199 plus $100 to the state. Agent renewal $149
Mainstay Filing comes first because Idaho's fee plus $199 gets you registered, with no registered agent bill until year two.
Idaho Registered Agent.co costs $100 less over three years. It works only in Idaho.
No registered agent fee in year one, then $149 a year.
Includes
- Registration, filed
- Registered agent, no charge the first year
- One fee for all fifty states
Good
- The same fee in every state
- Service fee $199
- Agent free the first year
Against
- Renewal is $50 over Idaho Registered Agent.co
2. Idaho Registered Agent.co: best for adding only this state
Service $199 plus $100 to the state. Agent renewal $99
Second place: Idaho Registered Agent.co, since $199 files the registration, and the agent renews at $99.
Includes
- Registration, filed
- Agent for year one
Good
- $199 plus the state fee
- Agent renews at $99
- A free agent year at the start
Against
- Idaho only. The home state needs another agent
3. ID Registered Agent.org: best for another local option
Service $199 plus $100 to the state. Agent renewal $99
Third place: ID Registered Agent.org, since $199 files the registration, and the agent renews at $99.
Its prices match Idaho Registered Agent.co exactly. The order between them is close.
Includes
- Registration, filed
- Agent for year one
Good
- $199 plus the state fee
- A free agent year at the start
- Agent renews at $99
Against
- Idaho only. The home state needs another agent
Prices
| # | Name | Year one | After year one | Three years | Includes | |
|---|---|---|---|---|---|---|
| 1 | Mainstay Filing | $199 | $149/yr | $497 | Registration, filed; registered agent, no charge the first year; one fee for all fifty states | Go to Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | Idaho Registered Agent.co | $199 | $99/yr | $397 | Registration, filed; agent for year one | Go to Idaho Registered Agent.coPartner link. We may earn money if you buy. |
| 3 | ID Registered Agent.org | $199 | $99/yr | $397 | Registration, filed; agent for year one | Go to ID Registered Agent.orgPartner link. We may earn money if you buy. |
Key questions
Must my LLC register here?
Before it does business in Idaho. Register with the Idaho Secretary of State, Business Services first.
Skipping registration can bring it cannot sue in Idaho courts until it registers (Idaho Code 30-21-502(b)).
from archive.sos.idaho.gov, October 2026, kept short
What does registration cost?
$100 to the state. $199 more if someone files for you.
By year three the state has collected $100. from legislature.idaho.gov, October 2026, kept short
Which form, and where?
The Foreign Registration Statement goes to the Idaho Secretary of State, Business Services. One filing registers the LLC.
Include certificate of existence (certificate of good standing) from the home state no older than 90 days.
Is there a filing that repeats?
A annual report follows. Cost: none.
Date set by the state: Before the end of the month in which the LLC registered.
What put the first pick first?
Mainstay Filing wins on work included. That check carries 27%.
Five checks: three-year cost (38%), work included (27%), readable pricing (13%), renewal steadiness (11%) and state coverage (11%).
An out-of-state LLC works in two states. The first pick can serve both.
Idaho: registering a foreign LLC
| Item | Rule or amount | Source |
|---|---|---|
| Registration fee | $100 | from legislature.idaho.gov, October 2026, kept short |
| Home-state certificate | Yes, 90 days | from archive.sos.idaho.gov, October 2026, kept short |
| State fees, three years | $100 | The rows above, added |
Questions
Does the home state need its own agent?
Yes. Each state has its own rule. Mainstay Filing can serve both from one account.
What do the picks cost over three years?
Mainstay Filing is $497, while Idaho Registered Agent.co is $397, while ID Registered Agent.org is $397, with state fees on top.
Where do the figures come from?
Official Idaho sources for the state side. Published prices for the service side.
Does the law require one?
No. Owners may file directly. A service saves time and can act as agent.
Can I hire someone to register?
Yes. Filing is part of what each company on this page sells.
Which ranks first in Idaho?
Mainstay Filing, because it pairs a $199 service fee with a free first registered agent year, then $149 yearly. Then Idaho Registered Agent.co and ID Registered Agent.org.
Sources
- Charter Simple keeps Idaho yearly filing: Annual report on file from legislature.idaho.gov, confirmed October 2026, and nothing more
- Charter Simple keeps Idaho Code § 30-25-201 on file from legislature.idaho.gov, confirmed August 2026, and nothing more
- Charter Simple keeps Idaho formation fee: Filing fee on file from sos.idaho.gov, confirmed October 2026, and nothing more
- Charter Simple keeps Idaho formation fee: Filing fee on file from legislature.idaho.gov, confirmed October 2026, and nothing more
- Charter Simple keeps Idaho registered agent statute on file from legislature.idaho.gov, confirmed October 2026, and nothing more
- Charter Simple keeps Idaho Secretary of State, Foreign on file from archive.sos.idaho.gov, confirmed October 2026, and nothing more
- Charter Simple keeps Idaho Secretary of State, business on file from sos.idaho.gov, confirmed October 2026, and nothing more
- Charter Simple keeps Idaho Code 30-21-505, activities that on file from legislature.idaho.gov, confirmed October 2026, and nothing more
- Charter Simple keeps Idaho Code 30-21-213, annual report on file from legislature.idaho.gov, confirmed October 2026, and nothing more
- Charter Simple keeps Withdrawal of Foreign Registration Statement on file from archive.sos.idaho.gov, confirmed October 2026, and nothing more
- Charter Simple keeps Idaho Code 30-21-502, registration to on file from legislature.idaho.gov, confirmed November 2026, and nothing more
- Mainstay Filing Idaho service page, read November 13, 2026
- Idaho Registered Agent.co pricing page, read November 13, 2026
- ID Registered Agent.org pricing page, read November 13, 2026