Idaho LLC Costs (2026): Official Fees and the 3 Best LLC Services
In 2026 we'd hire ID Registered Agent.org ($199), Mainstay Filing ($199) and Idaho Registered Agent.co ($199) for forming an LLC in Idaho, in that order. The state's own part is $100 to file, plus the annual report at no fee every year, which puts Idaho 10th of 50 on three-year state fees.
State Filing Data research desk
Official Idaho figures
10th
12550
of 50 on three-year state fees
Rank 1 is the least expensive state; tied with other states. Compare states
Due: last day of the entity's anniversary month. legislature.idaho.gov · October 2026
Three-year state fees
$100
Years one to three, state fees only
Who we'd use in Idaho
Order from our methodology: three-year service fees 35%, state filings covered 30%, then renewal, state fit and transparency.
Number one
1. ID Registered Agent.org: best for a budget Idaho LLC
$199 + state fee · agent $99/yr after
ID Registered Agent.org leads here. The case for it: $199 plus the state fee, with the first year of agent service included, then $99 a year.
On service fees over three years it undercuts Mainstay Filing, and that criterion weighs 35%.
Its published prices do not include the annual report, so you file that yourself every year.
What you pay for
Idaho formation prepared and filed
First year of agent service
For
No agent fee in year one
Agent renews at $99
Formation fee $199
Against
You file the annual report
EIN application not included ($99)
All fifty states
2. Mainstay Filing: best for the annual report handled for you
$199 a year, renewing at $199
Mainstay Filing slots in second. What it offers: $199 a year buys the formation plus every recurring item the state asks for: the agent and the annual report.
It costs $200 more than ID Registered Agent.org across three years, and cost is our heaviest criterion.
The annual report is filed for you; Idaho charges nothing for it.
What you pay for
Formation prepared and filed
Registered agent, all year
Annual report prepared and filed
EIN application
State fee at cost, no markup
For
Includes the EIN application
$199 renewal, no increase
$199 a year covers formation and agent and report
Against
$100 a year more than ID Registered Agent.org's agent renewal
Local option
3. Idaho Registered Agent.co: best for filing your own reports
$199 + state fee · agent $99/yr after
Idaho Registered Agent.co slots in third. What it offers: $199 plus the state fee, with the first year of agent service included, then $99 a year.
Its published prices do not include the annual report, so you file that yourself every year.
ID Registered Agent.org and this service publish identical prices.
To form the LLC you file the Certificate of Organization Limited Liability Company with the Idaho Secretary of State and pay $100. The services below add it at cost. Processing time: About 7 to 10 days.
Annual report: what it costs
Idaho expects the annual report every year (deadline last day of the entity's anniversary month).
The reasoning
Deciding factor in Idaho: service fees over three years (35%). ID Registered Agent.org beat Mainstay Filing on it.
ID Registered Agent.org's three-year service fees: $397 ($200 under Mainstay Filing).
FAQ
How much does it cost to start an LLC in Idaho?
$100 to the state. The services we'd use add $199 for the first year.
How much is the Idaho annual report?
There is no fee, due last day of the entity's anniversary month.
Where does Idaho rank on LLC costs?
10th of 50 on three-year state fees (tied), at $100, counting from the least expensive state.
How long does approval take?
Expect About 7 to 10 days.
Is a registered agent required?
Every LLC must name a registered agent with an in-state street address.
Which LLC service would you use?
ID Registered Agent.org first: the Idaho filing for $199 and a free first agent year, then $99 yearly for the agent. Then Mainstay Filing and Idaho Registered Agent.co.