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LLC 101 Guide

Unit 3 · New Mexico

Foreign LLC Registration in New Mexico (2026): 5 Tasks and the 3 Best Services

For registering an out-of-state LLC in New Mexico in 2026, this unit puts Mainstay Filing ($199), NM Registered Agent.org ($199) and New Mexico Registered Agent.co ($199) at the top of the class, in that order. Plan on 5 tasks and a $100 filing fee.

Prepared by the LLC 101 Guide instructors

Unit overview

Fee at the state office
$100
Source: tax.newmexico.gov, read in October 2026
Home certificate
30 days
Must be issued within
Maintenance filing
None
None for foreign LLCs
Three years of state fees
$100
Without any service fee
Unit tasks
5
Each one explained

What this unit teaches

  • When the rule kicks in
  • How the filing gets made
  • The upkeep that repeats
  • Our recommendations, with reasons

Who we would hire in New Mexico

Graded on the grading page: three-year cost (34%), assignments completed (31%), renewal price, fit with New Mexico's rules and plain pricing.

Top of the class

1. Mainstay Filing: best for several registrations

Start with this one$199 plus fees; renewal $149 yearly

Mainstay Filing comes out first, and the reason is that registering costs $199 plus state fees, and the first year of the registered agent is free.

NM Registered Agent.org is $100 lower across three years; this service still ranks higher because it does more of the work.

From year two the agent is $149 a year, whichever state you register in.

What the price covers

  • The registration filing
  • The registered agent costs nothing in year one
  • Any state, one price

What works

  • $199 on top of New Mexico's fee
  • Any state, one fee
  • Year-one agent is covered

What to weigh

  • $50 more a year for the agent
Visit Mainstay FilingPartner link. We may earn money if you buy.

Top of the class

2. NM Registered Agent.org: best for a budget registration

In-state service$199 plus fees; renewal $99 yearly

NM Registered Agent.org is a solid second-place option: the New Mexico registration is filed for $199 and includes a year of agent service, with renewal at $99.

What the price covers

  • Registration paperwork handled
  • One year of agent service is part of the price

What works

  • $199 to register
  • A small $99 renewal
  • First year of agent service costs nothing extra

What to weigh

  • No help in other states
Visit NM Registered Agent.orgPartner link. We may earn money if you buy.

Top of the class

3. New Mexico Registered Agent.co: best for a local filer

In-state service$199 plus fees; renewal $99 yearly

New Mexico Registered Agent.co is a solid third-place option: the New Mexico registration is filed for $199 and includes a year of agent service, with renewal at $99.

It lists the same prices as NM Registered Agent.org.

What the price covers

  • Registration paperwork handled
  • One year of agent service is part of the price

What works

  • $199 to register
  • A small $99 renewal
  • First year of agent service costs nothing extra

What to weigh

  • No help in other states
Visit New Mexico Registered Agent.coPartner link. We may earn money if you buy.

The New Mexico picks compared

#ServiceFirst yearFrom year twoThree-year total
1Mainstay Filing$199$149/yr$497Visit Mainstay FilingPartner link. We may earn money if you buy.
2NM Registered Agent.org$199$99/yr$397Visit NM Registered Agent.orgPartner link. We may earn money if you buy.
3New Mexico Registered Agent.co$199$99/yr$397Visit New Mexico Registered Agent.coPartner link. We may earn money if you buy.
Each company's posted price on November 13, 2026. None of the rows includes the $100 state fee.

The unit, task by task

  1. Task 1

    Find out whether you have to register

    An LLC formed in another state has to register in New Mexico before it does business there. Skipping registration has a price: Its contracts remain valid (NMSA 1978, section 53-19-53(B)). Fees for the unregistered period come due as well.

    Source: Source: tax.newmexico.gov, read in October 2026

  2. Task 2

    Ask your home state for proof of good standing

    Your filing must include certificate of good standing and compliance, from the last 30 days.

    Order it at the end so it is fresh when you file.

  3. Task 3

    Get a registered agent with a New Mexico address

    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.

    Each of the recommended services serves as the registered agent.

    Source: Source: nmonesource.com, read in October 2026

  4. Task 4

    File the Foreign LLC Certificate of Registration

    To register, send the Foreign LLC Certificate of Registration to the New Mexico Secretary of State, Business Services Division with $100.

    Source: Source: tax.newmexico.gov, read in October 2026

  5. Task 5

    Look ahead to the recurring filing

    Nothing repeats for a foreign LLC here.

What each task costs in New Mexico

Line itemGoes toTotal
Registration feeState office$100
Optional serviceYour service$199 in the first year
Three-year state totalState office$100
The state numbers are official New Mexico fees, sourced below. The three-year line combines the filing fee, the reports in years two and three and any minimum tax.

Why the list runs this way

Assignments the price completes makes up 31% of the grade, and that is where got ahead in New Mexico.

NM Registered Agent.org renews for less, but covering several states counted for more.

Check your New Mexico answers

What is New Mexico's fee for a foreign LLC?

$100 for the filing. Service fees: $199.

Which form do I file to register?

Fill in the form named in task 4 and send it to the New Mexico Secretary of State, Business Services Division.

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)). Fees for the unregistered period come due as well.

What is due after registering?

No recurring report for foreign LLCs in New Mexico.

Which service should handle the registration?

Mainstay Filing, because $199 on top of the state fee, a free first year of registered agent service and $149 a year after that. After it come NM Registered Agent.org and New Mexico Registered Agent.co.

Reading list and sources

  1. Further reading on NMSA 1978, § 53-19-7 and § 53-19-8: our unit draws on nmonesource.com, which we reopened in August 2026 so you can compare it with the original.
  2. Further reading on New Mexico Secretary of State, Business Services: our unit draws on sos.nm.gov, which we reopened in October 2026 so you can compare it with the original.
  3. Further reading on SOS Enterprise online filing portal: our unit draws on enterprise.sos.nm.gov, which we reopened in October 2026 so you can compare it with the original.
  4. Further reading on Business Online Filing Help: our unit draws on api.realfile.rtsclients.com, which we reopened in October 2026 so you can compare it with the original.
  5. Further reading on Taxation and Revenue Department, who must register: our unit draws on tax.newmexico.gov, which we reopened in October 2026 so you can compare it with the original.
  6. Further reading on New Mexico Statutes Annotated 1978, Limited Liability Company: our unit draws on nmonesource.com, which we reopened in November 2026 so you can compare it with the original.
  7. New Mexico service page of Mainstay Filing, taken on November 13, 2026
  8. pricing page of NM Registered Agent.org, taken on November 13, 2026
  9. pricing page of New Mexico Registered Agent.co, taken on November 13, 2026