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3 Best Foreign Registration Services in Arizona (2026)

Filing Shortlist cut the Arizona field of foreign registration services down to Mainstay Filing ($199), Arizona Registered Agent.co ($199) and AZ Registered Agent.org ($199), in that order for 2026. Mainstay Filing is the first pick because it charges $199 on top of the state fee, serves as statutory agent free for year one and prices every state the same.

From the Filing Shortlist editorial team

Rank1

Our top pick

1. Mainstay Filing: best for companies that work in more than one state

Service charge $199, state fee extra; agent service costs $149 annually after year one

Editor score9.1out of 10

Mainstay Filing takes the top spot because $199 prepares the Arizona registration and the statutory agent role costs nothing in year one, then $149 a year.

Past the free first year, agent service runs $149 a year, and that holds in every state.

Its three-year total is $100 above Arizona Registered Agent.co's, and what the price covers justifies that gap for us.

In the price

  • Registration paperwork done for you
  • Legal papers served on the company scanned and uploaded the same business day at no charge

Good

  • $199 service fee, with the state's fee added
  • Papers served on the company are scanned the same business day at no charge
  • The same price in each of the fifty states

Watch for

  • The agent is $149 a year after year one, $50 above Arizona Registered Agent.co
Visit Mainstay FilingPartner link. We may earn money if you buy. Read the full Mainstay Filing review

Rank2

Lower renewal than Mainstay

2. Arizona Registered Agent.co: best for companies adding just Arizona

You pay $199 for the service and the state's fee besides; from the second year the agent is $99

Editor score8.7out of 10

Arizona Registered Agent.co makes the list at number two because $199 above the state fee gets the company registered in Arizona, and the agent renews at $99.

The registered office is an in-state street address supplied by the plan, and any papers served on the company show up as scans in your online account.

In the price

  • Foreign registration done for you
  • The first year as statutory agent

Good

  • $99 yearly for the agent after year one
  • Covers your first year of statutory agent service
  • Registers the company for $199 and the state fee

Watch for

  • Arizona only; your home state needs its own agent
  • The EIN application is an extra charge ($99)

Rank3

Best for an Arizona-only company

3. AZ Registered Agent.org: best for Arizona registrations only

$199 covers the filing work, the state fee is separate, and the agent bills $99 each year after year one

Editor score8.4out of 10

AZ Registered Agent.org makes the list at number three because $199 above the state fee gets the company registered in Arizona, and the agent renews at $99.

The registered office is an in-state street address supplied by the plan, and any papers served on the company show up as scans in your online account.

Arizona Registered Agent.co and AZ Registered Agent.org list the same price and the same features, so either one is a reasonable choice.

In the price

  • Foreign registration done for you
  • One year of statutory agent service to start

Good

  • The agent is $99 a year from year two
  • Covers your first year of statutory agent service
  • $199 to register, plus state fees

Watch for

  • Arizona only; your home state needs its own agent
  • The EIN application is an extra charge ($99)

The 3 picks side by side

RankCompanyShortlist scoreService priceSecond yearSuitsGo
1 Mainstay Filing 9.1 $199 $149/yr Companies that operate across state lines Visit Mainstay FilingPartner link. We may earn money if you buy.
2 Arizona Registered Agent.co 8.7 $199 $99/yr The smallest agent renewal on this list Visit Arizona Registered Agent.coPartner link. We may earn money if you buy.
3 AZ Registered Agent.org 8.4 $199 $99/yr The smallest agent renewal on this list Visit AZ Registered Agent.orgPartner link. We may earn money if you buy.

Scores out of 10 are editorial marks from Filing Shortlist, based on the criteria on How we rank. Customers do not rate anything on this site.

Arizona foreign registration service pricing in 2026: first year, renewals, three-year total

CompanyFirst yearSecond yearThird yearThree-year totalAgent in year one
Mainstay Filing$199$149$149$497Not stated
Arizona Registered Agent.co$199$99$99$397Included
AZ Registered Agent.org$199$99$99$397Included

Every price comes from the company's own pages as of November 12, 2026. The $150 Arizona registration fee comes on top of each row and is left out of the totals.

How the order came together

Two criteria count most here, three-year price and what the price covers, at 28% each, while renewal terms, fit for the state and price clarity divide 44%. What tipped Arizona was what the price covers.

Registering in a second state touches two states, and one provider with one price in both scored highest on coverage, ahead of Arizona Registered Agent.co.

Every criterion and weight is set out on How we rank.

Registering a foreign LLC in Arizona: fee, form and office

Registration goes to the Arizona Corporation Commission, Corporations Division on the Foreign Registration Statement (Form L025). The state fee is $150. Along with the form, Arizona expects certificate of existence or good standing, plus a certified copy of the organizational documents, no older than 60 days when you file.

Arizona does not ask foreign LLCs for a yearly report.

What to have ready before you file

  • Certificate of existence or good standing, plus a certified copy of the organizational documents, dated within 60 days of filing.
  • The company's exact legal name and its formation date in the home state.
  • A statutory agent at a street address in the state. Every company on this shortlist can be that agent.
  • Payment of the $150 state fee with the filing.

The cost of skipping Arizona registration

An unregistered out-of-state LLC cannot sue in Arizona courts (A.R.S. 29-3902(B)). Its contracts remain valid (A.R.S. 29-3902(C)).

Common questions about Arizona foreign registration services

Must an LLC from another state register in Arizona?

It must, once it does business in the state. An unregistered company cannot sue in the state's courts until it does.

What is the full price of a foreign LLC registration in Arizona?

The state fee is $150, and service fees run $199.

What is the Arizona foreign registration form called?

It is the Foreign Registration Statement (Form L025), submitted to the Arizona Corporation Commission, Corporations Division.

Does Arizona ask for proof of good standing from home?

It does. The state wants certificate of existence or good standing, plus a certified copy of the organizational documents, dated no more than 60 days before the filing.

Does a registered foreign LLC still need a statutory agent?

Yes. The company keeps a statutory agent in the state, at a street address there, for as long as it stays registered.

Which service leads the Arizona foreign registration shortlist?

Mainstay Filing, because the fee is $199 plus the state's own, with a free first year as statutory agent, and the price is identical in every state.

Related pages

Where the figures come from

  1. Ariz. Rev. Stat. § 29-3201 (checked again August 2026)
  2. Arizona formation fee: Filing fee, official source (checked again October 2026)
  3. Arizona registered agent statute (checked again October 2026)
  4. Arizona Corporation Commission, LLC forms (checked again October 2026)
  5. Form L025 instructions (checked again October 2026)
  6. A.R.S. 29-3903, registration of foreign LLC (checked again October 2026)
  7. A.R.S. 29-3905, activities that are not doing business (checked again October 2026)
  8. Arizona Corporation Commission FAQs (checked again October 2026)
  9. A.R.S. 29-3902, registration to do business (checked again November 2026)
  10. Pulled from Mainstay Filing: Arizona service page, November 12, 2026
  11. Pulled from Arizona Registered Agent.co: pricing and service pages, November 12, 2026
  12. Pulled from AZ Registered Agent.org: pricing and service pages, November 12, 2026