Place1
Best hereMainstay Filing
1. Mainstay Filing: best for growing companies
$149 per year, renews at $149
Our mark9.5out of 10
We put Mainstay Filing first: $149 a year for an agent that can follow the company into any state at the same price.
If the company is not formed yet, Mainstay's $199-a-year formation package covers the Idaho filing and also files your annual report.
You pay $150 more over three years than with ID Registered Agent.org, for more in the price.
What you get
- A physical in-state address on the public record
- Service of process scanned the same business day, no fee
- First three government mailings a year scanned free
- Compliance reminders
Why pick it
- Works for LLCs, corporations, LPs, LLPs and nonprofits
- First three government mailings a year scanned free
- Service of process scanned the same business day, no fee
- Flat $149 a year
Less good
- Agent alone costs $50 a year more than ID Registered Agent.org
- Report filing needs the formation package
Place2
Lower renewal than MainstayID Registered Agent.org
2. ID Registered Agent.org: best for the lowest yearly price on this list
$99 per year, renews at $99
Our mark9.0out of 10
ID Registered Agent.org ranks second: an in-state agent for $99 a year that scans served papers to you online.
The plan covers an in-state street address for your registered office, with legal documents scanned and sent to you online.
What you get
- Street address on the public record
- Online copies of legal papers served on the company
Why pick it
- Annual price $99, renewal price $99
- Costs less than Mainstay Filing each year
- Also files LLC formations
Less good
- Annual report is on you
- Single-state service
Place3
Idaho onlyIdaho Registered Agent.co
3. Idaho Registered Agent.co: best for Idaho-only companies
$99 per year, renews at $99
Our mark8.9out of 10
Third: Idaho Registered Agent.co, for an in-state agent for $99 a year that scans served papers to you online.
The plan covers an in-state street address for your registered office, with legal documents scanned and sent to you online.
Same prices and features as ID Registered Agent.org; pick whichever you prefer.
What you get
- Street address on the public record
- Online copies of legal papers served on the company
Why pick it
- Costs less than Mainstay Filing each year
- Also files LLC formations
- Annual price $99, renewal price $99
Less good
- Annual report is on you
- Single-state service
Shortlist at a glance
| Rank | Service | Our score | Annual price | Renewal price | Best for | Link |
|---|
| 1 | Mainstay Filing | 9.5 | $149 | $149/yr | Agent plus fifty-state coverage | Visit Mainstay FilingPartner link. We may earn money if you buy. |
|---|
| 2 | ID Registered Agent.org | 9.0 | $99 | $99/yr | Lowest yearly price on this list | Visit ID Registered Agent.orgPartner link. We may earn money if you buy. |
|---|
| 3 | Idaho Registered Agent.co | 8.9 | $99 | $99/yr | Lowest yearly price on this list | Visit Idaho Registered Agent.coPartner link. We may earn money if you buy. |
|---|
Each score is our editorial judgment out of 10 (see How we rank), not an average of customer ratings.
Annual and renewal prices in Idaho, 2026
| Service | Year one | Year two | Year three | Three-year total | Same price at renewal |
|---|
| Mainstay Filing | $149 | $149 | $149 | $447 | Yes |
|---|
| ID Registered Agent.org | $99 | $99 | $99 | $297 | Yes |
|---|
| Idaho Registered Agent.co | $99 | $99 | $99 | $297 | Yes |
|---|
Published prices, read November 12, 2026 on each company's site. Whichever agent you name, Idaho's fees stay the same.
How the order was decided
What split first and second in Idaho: what one price covers, weighted at 30% in our method.
ID Registered Agent.org is the lower price, but Mainstay's fifty-state coverage scored higher on our method.
Read the full criteria on our How we rank page.
What Idaho requires of a registered agent (official rules)
Every LLC must name a registered agent with an in-state street address. The address has to be a physical street address in Idaho. P.O. boxes and commercial mailboxes are not accepted. The rule is in Idaho Code § 30-21-404.
The annual report: fee and due date
The annual report is due every year (last day of the entity's anniversary month). State notices go to your registered agent's address.
Common Idaho questions
Does an Idaho LLC need a registered agent?
Yes. Every LLC must name a registered agent with an in-state street address.
How much does a registered agent cost in Idaho?
Expect $99 to $149 a year; renewal prices match the first year.
Can I be my own registered agent?
You can if you meet the requirements. An Idaho resident, or a business entity authorized to do business in Idaho. An assumed business name (DBA) cannot serve.
When is the Idaho annual report due?
It is due last day of the entity's anniversary month.
Which registered agents do you rank here?
Mainstay Filing ($149 a year), ID Registered Agent.org ($99 a year) and Idaho Registered Agent.co ($99 a year), in this order.
Which Idaho registered agent is the best value?
Mainstay Filing ranks first on our method: $149 a year with the same price at renewal, and service of process scanned the same business day at no fee.