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Step-by-step guide · Arizona

3 Best Foreign Registration Services in Arizona (2026): A Simple Guide

Our 2026 recommendation for foreign registration services in Arizona, in order, is Mainstay Filing ($199), Arizona Registered Agent.co ($199) and AZ Registered Agent.org ($199). Set aside $150 for Arizona to register, and $397 to $497 for services over three years.
Written by the Simple Filing Guide editorial team

The short route

What you pay the state
$150
Certificate of good standing?
Yes, attach it (60 days or newer)
Next
No report
Our shortlist
Mainstay Filing, Arizona Registered Agent.co then AZ Registered Agent.org

Arizona picks, best first

Want to know why this order? See how we rank.

#1 Recommended first

1. Mainstay Filing: best for your second, third and fourth state

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

Mainstay Filing takes the top spot, since registering costs $199, with no statutory agent charge until year two.

Over three years this costs $100 more than Arizona Registered Agent.co, and the extra pays for service in every state.

From the second year you pay $149 a year for the statutory agent.

Checklist: what is included
  • The registration filing
  • Fifty states, one fee
What works
  • Fifty states covered
  • $199 to file the registration
Gaps
  • Agent renews higher ($149)
Start with Mainstay Filing Partner link. We may earn money if you buy.
#2 Arizona only

2. Arizona Registered Agent.co: best for registering in this state only

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

Next, consider Arizona Registered Agent.co: $199 over the state fee at the start, then $99 yearly.

Checklist: what is included
  • Registration handled
  • A year of agent service to start
What works
  • $199 plus the state fee
  • A free agent year at the start
  • $99 a year from year two
Gaps
  • You need another company for your home state
Start with Arizona Registered Agent.co Partner link. We may earn money if you buy.
#3 Arizona only

3. AZ Registered Agent.org: best for a one-state add-on

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

Next, consider AZ Registered Agent.org: $199 over the state fee at the start, then $99 yearly.

Arizona Registered Agent.co charges the same, so this is nearly a tie.

Checklist: what is included
  • Registration handled
  • A year of agent service to start
What works
  • A free agent year at the start
  • $199 plus the state fee
  • $99 a year from year two
Gaps
  • You need another company for your home state
Start with AZ Registered Agent.org Partner link. We may earn money if you buy.

The table

#CompanyFirst-year priceAt renewalTotal for 3 yearsWhat is covered
1 Mainstay Filing $199$149/yr$497the registration filing; fifty states, one fee Start with Mainstay Filing Partner link. We may earn money if you buy.
2 Arizona Registered Agent.co $199$99/yr$397registration handled; A year of agent service to start Start with Arizona Registered Agent.co Partner link. We may earn money if you buy.
3 AZ Registered Agent.org $199$99/yr$397registration handled; A year of agent service to start Start with AZ Registered Agent.org Partner link. We may earn money if you buy.

Each company's listed prices on November 13, 2026. State fees are extra and do not vary by pick.

The key questions

Who must register in this state?

Do the registration first and the business second when an LLC from elsewhere enters Arizona.

An unregistered LLC may face it cannot sue in Arizona courts until it registers (A.R.S. 29-3902(B)).

verify at azcc.gov, as of October 2026

How much does registration cost?

$150 to the state, $199 to a service.

The state will have collected $150 by the end of year three. verify at azcc.gov, as of October 2026

What do I submit?

Your LLC is registered once the Arizona Corporation Commission, Corporations Division approves the Foreign Registration Statement (Form L025).

Attach certificate of existence or good standing, plus a certified copy of the organizational documents newer than 60 days.

Are there ongoing fees to plan for?

Foreign LLCs file no recurring report here.

Why is number one first?

Mainstay Filing wins on filing jobs included, a 27% check.

Total for three years is worth 37% and filing jobs included 27%, with three smaller checks breaking ties.

Because two states are involved, a company that works everywhere ranked above Arizona Registered Agent.co.

How we rank

What Arizona requires to register

ItemAmount or ruleWhere it is from
Registration fee $150verify at azcc.gov, as of October 2026
Good standing proof Yes, attach it, 60 daysverify at azcc.gov, as of October 2026
Three-year state total $150The rows above, totaled

Every amount above links to its official source. The last row is our own total of the filing, two reports and any minimum tax, without variable costs like publication.

Quick answers

What about the state where I formed the LLC?

Yes. Your home state keeps its own agent rule, and Mainstay Filing can serve both states from one account.

What is the three-year cost of each?

$497 for Mainstay Filing, $397 for Arizona Registered Agent.co, $397 for AZ Registered Agent.org (services only).

What are the numbers based on?

For state costs we use Arizona's published fee schedules and forms. For service costs we use each company's price page.

Is a service required by law?

If you meet the rules on this page, you can file on your own, and the state charges the same either way.

Do these companies handle the filing?

They do, so the only cost that changes is the service fee.

Who ranks first in Arizona?

Mainstay Filing is on top because it charges $199 plus state fees and waives the statutory agent the first year; Arizona Registered Agent.co and AZ Registered Agent.org follow.

Sources used in this guide

  1. Source for Ariz: azleg.gov, August 2026
  2. Source for Arizona formation fee: Filing fee: azcc.gov, October 2026
  3. Source for Arizona registered agent statute: azleg.gov, October 2026
  4. Source for Arizona Corporation Commission, LLC forms: azcc.gov, October 2026
  5. Source for Form L025 instructions: azcc.gov, October 2026
  6. Source for A.R.S. 29-3903, registration of foreign: azleg.gov, October 2026
  7. Source for A.R.S. 29-3905, activities that are: azleg.gov, October 2026
  8. Source for Arizona Corporation Commission FAQs: azcc.gov, October 2026
  9. Source for A.R.S. 29-3902, registration to do: azleg.gov, November 2026
  10. Mainstay Filing, Arizona service page: prices as of November 13, 2026
  11. Arizona Registered Agent.co, pricing page: prices as of November 13, 2026
  12. AZ Registered Agent.org, pricing page: prices as of November 13, 2026