Open it up · New Mexico

3 Best Foreign Registration Services in New Mexico (2026), Opened Up

New Mexico, 2026: Mainstay Filing ($199), New Mexico Registered Agent.co ($199) and NM Registered Agent.org ($199), in that order, are the foreign registration services worth opening first. Inside the cost: $100 goes to New Mexico, and three years of service add $397 to $497.

Unpacked by the LLC Unpacked editorial teamUpdated November 13, 2026

Four things inside

State fee to register: $100
Certificate packed in?: Yes (30 days old at most)
Afterward: No report
Top of the stack: Mainstay Filing, New Mexico Registered Agent.co then NM Registered Agent.org

Our New Mexico picks, opened up

Prices come from each company's own page. See how we open it up.

Top of the stack

1. Mainstay Filing: best for adding state after state

$199 plus the state fee, then $149 a year

What puts Mainstay Filing first: $199 over the state fee registers you, with the registered agent not charged in year one and $149 a year after.

New Mexico Registered Agent.co would save $100 across three years if the LLC stays in New Mexico.

After the free first year, the registered agent renews at $149.

Inside the price

Out-of-state registration filed
Registered agent, not charged in year one
One fee, any state

Inside, the good

Identical fee in every state
Agent costs nothing the first year
$199 on top of New Mexico's fee

Inside, the catch

$50 more a year for the agent

The New Mexico specialist

2. New Mexico Registered Agent.co: best for adding only this state

$199 plus the state fee, then $99 a year

New Mexico Registered Agent.co sits second because registering costs $199 over the state fee, with the agent covered in year one, then $99 a year.

Inside the price

New Mexico registration filing
Agent included in year one

Inside, the good

A first year of agent service is inside
A renewal of $99
Service fee of $199

Inside, the catch

New Mexico only, so the home state needs its own agent

The New Mexico specialist

3. NM Registered Agent.org: best for another in-state option

$199 plus the state fee, then $99 a year

NM Registered Agent.org sits third because registering costs $199 over the state fee, with the agent covered in year one, then $99 a year.

Price for price, a tie with New Mexico Registered Agent.co.

Inside the price

New Mexico registration filing
Agent included in year one

Inside, the good

A first year of agent service is inside
Service fee of $199
A renewal of $99

Inside, the catch

New Mexico only, so the home state needs its own agent

Inside each price

#	Company	Year one	Renewal	Three-year total	Covers
1	Mainstay Filing	$199	$149/yr	$497	Out-of-state registration filed; registered agent, not charged in year one; one fee, any state	Open Mainstay FilingPartner link. We may earn money if you buy.
2	New Mexico Registered Agent.co	$199	$99/yr	$397	New Mexico registration filing; agent included in year one	Open New Mexico Registered Agent.coPartner link. We may earn money if you buy.
3	NM Registered Agent.org	$199	$99/yr	$397	New Mexico registration filing; agent included in year one	Open NM Registered Agent.orgPartner link. We may earn money if you buy.

Prices as of November 13, 2026. The state's own fees are in the checklist below.

Layer by layer

Does my LLC from another state have to register?

The order matters: the New Mexico Secretary of State, Business Services Division gets the registration first, and the LLC starts doing business in New Mexico afterward.

Inside the risk of skipping it: back fees for the months it ran unregistered.

peek at tax.newmexico.gov, confirmed October 2026

What is inside the cost of registering?

Two parts: $100 to the state and $199 to a service.

Over three years the state's fees reach $100, counting any recurring report. peek at tax.newmexico.gov, confirmed October 2026

What registers the LLC?

The Foreign LLC Certificate of Registration is the filing, and the New Mexico Secretary of State, Business Services Division receives it.

Attach certificate of good standing and compliance issued within the last 30 days.

Is there a filing that repeats?

Nothing has to be filed on a schedule after registering.

Why is the stack in this order?

Mainstay Filing wins the what is inside the price layer, which counts 29%.

Two layers carry most of the weight, total across three years (34%) and what is inside the price (29%).

With two states in play, a provider for every state outranks New Mexico Registered Agent.co.

How we open it up

New Mexico: the registration checklist

Part	What is inside	Official source
Registration fee	$100	peek at tax.newmexico.gov, confirmed October 2026
Certificate from home	Yes, 30 days	peek at tax.newmexico.gov, confirmed October 2026
What the state collects in three years	$100	The rows above, stacked

The last row stacks the filing fee, the reports in years two and three and any minimum tax. A cost with no fixed amount, such as a newspaper notice, is explained above and kept out of the sum.

Also worth asking

Do I still need an agent in my home state?

Most likely. Each state wants an agent of its own, and while a one-state service covers only one of them, Mainstay Filing covers every state.

How do the three-year totals compare?

Opened up over three years: Mainstay Filing at $497, New Mexico Registered Agent.co at $397, NM Registered Agent.org at $397, services only.

Are the fees official?

Two kinds of source feed this page: New Mexico's official documents for what the state charges, and company price pages for what services charge.

Do I have to use a service?

No. Owners can file with the state directly. A service saves time and can act as agent, but nothing makes you hire one.

Can I hire someone to register the LLC?

Each company here handles the filing itself. What differs between them is only the service fee, since the state charges the same.

What is the best foreign registration service for New Mexico?

Mainstay Filing, because the price is $199 in every state, and the first registered agent year is inside it. Then New Mexico Registered Agent.co and NM Registered Agent.org.

What the page rests on

Unpacking NMSA 1978, § 53-19-7 and led us to nmonesource.com, confirmed August 2026, which you can open yourself
Unpacking New Mexico Secretary of State led us to sos.nm.gov, confirmed October 2026, which you can open yourself
Unpacking SOS Enterprise online filing portal led us to enterprise.sos.nm.gov, confirmed October 2026, which you can open yourself
Unpacking Business Online Filing Help led us to api.realfile.rtsclients.com, confirmed October 2026, which you can open yourself
Unpacking Taxation and Revenue Department, who led us to tax.newmexico.gov, confirmed October 2026, which you can open yourself
Unpacking New Mexico Statutes Annotated 1978 led us to nmonesource.com, confirmed November 2026, which you can open yourself
Mainstay Filing New Mexico service page, read November 13, 2026
New Mexico Registered Agent.co pricing page, read November 13, 2026
NM Registered Agent.org pricing page, read November 13, 2026