3 Best Foreign Registration Services in New Mexico (2026): The Straight Story
New Mexico, 2026: New Mexico Registered Agent.co ($199), Mainstay Filing ($199) and NM Registered Agent.org ($199) are our picks for foreign registration services, in that order. Here's the money: $100 to the state, $397 to $497 to a service across three years.
Straight from the LLC Straight Talk editorial team
The short of it
The short of it
What the state charges to register
$100
Bring a home-state certificate?
Yes (30 days old, tops)
Afterward
No report
Who we'd use
New Mexico Registered Agent.co, Mainstay Filing then NM Registered Agent.org
Who we'd use in New Mexico
The order comes from our five tests: three-year cost first, then what the price covers.
#1Our top pick
1. New Mexico Registered Agent.co: best for adding this state and no others
$199 to register, $99 a year for the agent after
New Mexico Registered Agent.co wins the top spot: add up three years of its service fees and you've got $397.
Price decides this one: three years here come to less than at Mainstay Filing.
What you get
Registration filed
Agent service covered for year one
Pluses
Renewal's $99
$199 plus the state fee
The first agent year's included
What's not
New Mexico only, so your home state needs another agent
#2Works in all 50 states
2. Mainstay Filing: best for registering in several states
$199 to register, $149 a year for the agent after
Mainstay Filing comes in second because you pay $199 on top of the state fee, the registered agent costs nothing in year one, and after that it's $149.
New Mexico Registered Agent.co is $100 less over three years, and that's enough to decide the order.
Skip the registered agent charge in year one. Afterward expect $149 a year in every state.
What you get
Registration, start to finish
Registered agent, waived for the first year
The same fee no matter the state
Pluses
$199 to file
The first agent year's covered
Ready for the next state
What's not
New Mexico Registered Agent.co renews its agent $50 lower
#3New Mexico only
3. NM Registered Agent.org: best for one added state, and that's it
$199 to register, $99 a year for the agent after
Add up three years of its service fees and you've got $397. That puts NM Registered Agent.org third.
It charges what New Mexico Registered Agent.co charges.
What you get
Registration filed
Agent service covered for year one
Pluses
Renewal's $99
The first agent year's included
$199 plus the state fee
What's not
New Mexico only, so your home state needs another agent
Side by side
#
Who
First year
Then
Three-year total
What you get
1
New Mexico Registered Agent.co
$199
$99/yr
$397
registration filed; agent service covered for year one
Figure $100 to the state and $199 if you hire help.
Over three years the state's fees reach $100, counting any recurring report. go check tax.newmexico.gov, last confirmed October 2026
What registers the LLC?
You file the Foreign LLC Certificate of Registration with the New Mexico Secretary of State, Business Services Division, and that single filing registers the LLC.
Include certificate of good standing and compliance issued within the last 30 days.
What do I owe once I'm registered?
Foreign LLCs don't file a recurring report here.
Why this order?
On money out the door in three years (35% of the score), New Mexico Registered Agent.co wins.
We run five tests: money out the door in three years (35%), jobs the price actually covers (30%), no hunting for the price (14%), no surprise at renewal (11%) and where it works (10%).
Do the math: New Mexico Registered Agent.co is $397 for three years, and that's $100 less than Mainstay Filing.
The last row is our math, not the state's: filing fee, plus the reports in years two and three, plus any minimum tax. If a cost has no fixed amount, like a newspaper notice, it's explained above and left out.
More questions
Do I still need an agent at home?
Yes. Your home state has its own agent rule, and Mainstay Filing can cover both states from one account.
What do the picks cost over three years?
New Mexico Registered Agent.co will set you back $397, and Mainstay Filing will set you back $497, and NM Registered Agent.org will set you back $397, with state fees on top.
Where do these numbers come from?
State fees come from New Mexico's official documents, and service fees come from each company's own price page. Both are dated here.
Do I have to use a service?
Not required. The state takes filings from owners.
Will a service file it for me?
All of them do, so the service fee's the only difference.
Who should I use for a foreign registration service in New Mexico?
Go with New Mexico Registered Agent.co first, then look at Mainstay Filing and NM Registered Agent.org.