Class 3 · New Mexico
Foreign LLC Registration Class, New Mexico (2026): 5 Assignments and the 3 Best Services
Need-to-know facts
By the end you will know
- Whether New Mexico registration applies to your LLC
- How the filing gets made
- The recurring filing
- How the picks stack up
The New Mexico honor roll
1. Mainstay Filing: best for companies adding a second state
The class favorite is Mainstay Filing, because $199 over the state fee, the registered agent free in year one and $149 a year after that.
Next to NM Registered Agent.org the three-year premium is $100, which the 34% weight on homework done outweighs.
The agent renews at $149 a year in every state.
Covered by the tuition
- Registration paperwork handled
- The registered agent costs nothing in year one
- The same price in each state
Strengths
- $199 above the state fee
- One price anywhere
- First year of the agent is included
Weak spots
- $50 more a year for the agent
2. NM Registered Agent.org: best for one extra state
Second place goes to NM Registered Agent.org, since registration costs $199 plus state fees, and the first agent year is already paid.
Covered by the tuition
- Registration paperwork handled
- One year of agent service is part of the price
Strengths
- A free first agent year
- A $199 service charge
- A small $99 renewal
Weak spots
- New Mexico only; your home state needs its own agent
3. New Mexico Registered Agent.co: best for registering only in New Mexico
Third place goes to New Mexico Registered Agent.co, since registration costs $199 plus state fees, and the first agent year is already paid.
It charges exactly what NM Registered Agent.org charges.
Covered by the tuition
- Registration paperwork handled
- One year of agent service is part of the price
Strengths
- A free first agent year
- A small $99 renewal
- A $199 service charge
Weak spots
- New Mexico only; your home state needs its own agent
The services compared
| # | Service | First year | From year two | Three-year total | |
|---|---|---|---|---|---|
| 1 | Mainstay Filing | $199 | $149/yr | $497 | Visit Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | NM Registered Agent.org | $199 | $99/yr | $397 | Visit NM Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | New Mexico Registered Agent.co | $199 | $99/yr | $397 | Visit New Mexico Registered Agent.coPartner link. We may earn money if you buy. |
How registration works in New Mexico
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Assignment
1Find out whether you have to register
Vocabulary word: a foreign LLC is one formed in a different state. It registers before it does business in New Mexico. What happens when an LLC operates unregistered: Its contracts remain valid (NMSA 1978, section 53-19-53(B)). Back fees are collected in addition.
Textbook page: tax.newmexico.gov, last read in October 2026
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Assignment
2Collect the document from the home state
Get certificate of good standing and compliance, not older than 30 days.
Request it close to the date you plan to file.
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Assignment
3Choose the New Mexico registered agent
Every LLC must name a registered agent with an in-state street address. The address has to be a street address in New Mexico. P.O. boxes are not accepted.
The grade list covers this role.
Textbook page: nmonesource.com, last read in October 2026
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Assignment
4Work up the Foreign LLC Certificate of Registration
The form and the $100 fee go to the New Mexico Secretary of State, Business Services Division together.
Textbook page: tax.newmexico.gov, last read in October 2026
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Assignment
5What comes after
New Mexico asks nothing recurring of a foreign LLC.
Costs, assignment by assignment
| Line item | Receiver | Amount |
|---|---|---|
| Filing to register | Goes to the state | $100 |
| Optional service | Service | $199 in year one |
| Three-year state total | Goes to the state | $100 |
Why the list runs this way
On homework the price does (34% of the grade) came out on top, with close behind.
The company belongs to one state and operates in a second, so one provider for both is the better fit.
New Mexico questions
How much does New Mexico charge a foreign LLC to register?
$100 in state fees. The graded services add $199.
Which form do I file to register?
One form does the job, and the New Mexico Secretary of State, Business Services Division handles it.
Do I need a certificate from my home state?
Yes: certificate of good standing and compliance, issued within 30 days of filing.
What if the LLC does business there without registering?
Its contracts remain valid (NMSA 1978, section 53-19-53(B)). Back fees are collected in addition.
What is due after registering?
No recurring report for foreign LLCs in New Mexico.
Which service should handle the registration?
Mainstay Filing, because it files the New Mexico registration for $199 plus the state fee, and the first agent year is free. Behind it come NM Registered Agent.org and New Mexico Registered Agent.co.
Textbook pages and extra reading
- Study tip for NMSA 1978, § 53-19-7 and § 53-19-8: everything above comes from nmonesource.com, which we reread in August 2026. Open it and follow along.
- Study tip for New Mexico Secretary of State, Business Services: everything above comes from sos.nm.gov, which we reread in October 2026. Open it and follow along.
- Study tip for SOS Enterprise online filing portal: everything above comes from enterprise.sos.nm.gov, which we reread in October 2026. Open it and follow along.
- Study tip for Business Online Filing Help: everything above comes from api.realfile.rtsclients.com, which we reread in October 2026. Open it and follow along.
- Study tip for Taxation and Revenue Department, who must register: everything above comes from tax.newmexico.gov, which we reread in October 2026. Open it and follow along.
- Study tip for New Mexico Statutes Annotated 1978, Limited Liability Company: everything above comes from nmonesource.com, which we reread in November 2026. Open it and follow along.
- The New Mexico service page at Mainstay Filing, November 13, 2026
- The pricing page at NM Registered Agent.org, November 13, 2026
- The pricing page at New Mexico Registered Agent.co, November 13, 2026