Foreign LLC Registration in New Hampshire (2026): 4 Moves and the 3 Best Services
Short answer for New Hampshire, 2026: use Mainstay Filing ($199), New Hampshire Registered Agent.co ($199) and NH Registered Agent.org ($199), ranked best to worst, if you want help registering an LLC from another state. New Hampshire wants $100 from a foreign LLC. 4 moves show the rest.
From the Founder Primer desk
Key facts
Filing fee
$100
Check it yourself at sos.nh.gov; we read it in October 2026
Yearly report
$100
Annual report
Three-year state cost
$300
Service fees excluded
Moves in this primer
4
In order
You will know
Whether New Hampshire registration applies to you
How the filing is made
What follows registration
Our picks and the reasoning
If you want someone else to file
Five published criteria set the order; read them on how we score.
Our pick$199 plus the $100 state fee, then $149 a year
1. Mainstay Filing: best for multiple registrations
Mainstay Filing gets the top mark in New Hampshire: service fee $199, plus New Hampshire's fee; the agent is $149 a year from year two.
You pay $100 more than at New Hampshire Registered Agent.co across three years and keep less of the paperwork.
From the second year the agent bills $149 yearly, no matter the state.
Inside the price
Filing with the state
Registered agent free in year one
One fee in any state
In its favor
Same fee in every state
Year-one agent included
$199 to register
Against it
$50 more a year for the agent
One-state plan$199 plus the $100 state fee, then $99 a year
2. New Hampshire Registered Agent.co: best for a low yearly agent cost
Second place is New Hampshire Registered Agent.co, because $199 on top of the state fee, then $99 a year.
Inside the price
Registration filing
One year of agent service
In its favor
$99 yearly from year two
First agent year costs nothing extra
A $199 service fee
Against it
No help in other states
One-state plan$199 plus the $100 state fee, then $99 a year
3. NH Registered Agent.org: best for registering in New Hampshire only
Third place is NH Registered Agent.org, because $199 on top of the state fee, then $99 a year.
It costs the same as New Hampshire Registered Agent.co.
Pulled from each company's pricing page on November 13, 2026. The $100 state fee is not in these figures.
The primer, move by move
Move 1
When registration is required
An LLC formed in another state registers with New Hampshire before doing business there. Without registration: Its contracts remain enforceable (RSA 304-C:180, II(a)). The state collects back fees as well.
Where this comes from: Check it yourself at gc.nh.gov; we read it in October 2026
Move 2
Get a registered agent with a New Hampshire address
Every LLC must name a registered agent with an in-state street address. The address has to be a physical street address in New Hampshire; filings that list an out-of-state address are not processed. P.O. boxes are not accepted.
Where this comes from: Check it yourself at gc.nh.gov; we read it in October 2026
Move 3
Submit the Application for Registration as a Foreign Limited Liability Company
The registration is the Application for Registration as a Foreign Limited Liability Company (Form FLLC-1) plus $100, addressed to the New Hampshire Secretary of State, Corporation Division.
Where this comes from: Check it yourself at sos.nh.gov; we read it in October 2026
Move 4
Keep it going
Expect the annual report and a $100 fee (April 1).
What you will pay
Line
Payee
Figure
Registering the LLC
The state
$100
Annual report
The state
$100
Service fees (optional)
Service
$199 in the first year
State total, three years
The state
$300
Filing plus the reports in years two and three plus any minimum tax: that is the state's three-year total. Sources are listed below.
Why Mainstay Filing is first
The deciding criterion: to-dos the price takes off you, at 38% of the mark.
New Hampshire Registered Agent.co has the smaller renewal, yet reaching several states carried more weight.
New Hampshire quick answers
What will it cost to register a foreign LLC in New Hampshire?
$100 to the state. Service fees: $199.
Which form do I file to register?
Find the Application for Registration as a Foreign Limited Liability Company (Form FLLC-1), which goes to the New Hampshire Secretary of State, Corporation Division.
What if the LLC does business there without registering?
Its contracts remain enforceable (RSA 304-C:180, II(a)). The state collects back fees as well.
What is due after registering?
After registering, the LLC files the annual report; each one costs $100.
Which services are in this lesson?
3 services get marks: Mainstay Filing at $199, New Hampshire Registered Agent.co at $199 and NH Registered Agent.org at $199.
Which service should handle the registration?
Mainstay Filing, New Hampshire Registered Agent.co and NH Registered Agent.org, best mark first.
Proof for New Hampshire Secretary of State, Corporations Division: the claims lean on sos.nh.gov, which we last read in August 2026. Open it and compare.
Proof for New Hampshire Secretary of State, Corporations Division: the claims lean on sos.nh.gov, which we last read in August 2026. Open it and compare.
Proof for New Hampshire report due date: the claims lean on gencourt.state.nh.us, which we last read in August 2026. Open it and compare.
Proof for N.H: the claims lean on gc.nh.gov, which we last read in August 2026. Open it and compare.
Proof for New Hampshire formation fee: Filing fee, official source: the claims lean on gc.nh.gov, which we last read in October 2026. Open it and compare.
Proof for New Hampshire registered agent statute: the claims lean on gc.nh.gov, which we last read in October 2026. Open it and compare.
Proof for Form FLLC-1: the claims lean on sos.nh.gov, which we last read in October 2026. Open it and compare.
Proof for RSA 304-C:174, activities that do not count: the claims lean on gc.nh.gov, which we last read in October 2026. Open it and compare.
Proof for RSA 304-C:175, registration: the claims lean on gc.nh.gov, which we last read in October 2026. Open it and compare.
Proof for RSA 304-C:180, effect of not registering: the claims lean on gc.nh.gov, which we last read in November 2026. Open it and compare.
Mainstay Filing New Hampshire service page as of November 13, 2026
New Hampshire Registered Agent.co pricing page as of November 13, 2026
NH Registered Agent.org pricing page as of November 13, 2026