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Formation Rated

Rankings of registered agents, LLC formation and foreign registration services in all 50 states.

Foreign registration ratings · Arizona

3 Best Foreign Registration Services in Arizona (2026)

From the Formation Rated editorial team
Formation Rated's 2026 ratings for foreign registration services in Arizona, highest first: Mainstay Filing ($199), AZ Registered Agent.org ($199) and Arizona Registered Agent.co ($199). Mainstay Filing holds the top rating: $199 on top of the state's fee, with year one as statutory agent free and the same amount in every state.
Position1
Our top pick in Arizona

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

$199 plus the state fee, then the agent at $149 a year after year one

Our score9.3out of 10

Mainstay Filing is rated first: the Arizona registration costs $199, and the statutory agent is free for year one and $149 a year after.

Year one of agent service costs nothing, and afterward the agent is $149 a year in whichever state.

On three-year sums Mainstay is $100 above AZ Registered Agent.org; the wider coverage justifies that gap in the rating.

What you get

  • Foreign registration filed on your behalf
  • Same-business-day scan and upload for any service of process, no fee

Pros

  • $199 service fee, state fee separate
  • Same-business-day scans of service of process, no fee
  • The same amount in all fifty states

Trade-offs

  • Agent renewal of $149 is $50 over AZ Registered Agent.org
Visit Mainstay FilingPartner link. We may earn money if you buy. The Mainstay Filing entry
Position2
Low renewal

2. AZ Registered Agent.org: best for adding Arizona and nothing else

$199 with the state's fee added; agent renewal $99

Our score9.1out of 10

AZ Registered Agent.org is rated second: $199 plus the state fee, year-one statutory agent service included, then $99 a year for the agent.

The plan lists an in-state street address as the registered office and scans papers served there into your account.

What you get

  • The registration filing
  • First-year statutory agent service

Pros

  • A $199 registration amount before the state fee
  • $99 a year for the agent after year one
  • The first statutory agent year is covered

Trade-offs

  • Arizona only; your home state needs its own agent
  • EIN application billed at $99
Visit AZ Registered Agent.orgPartner link. We may earn money if you buy. The AZ Registered Agent.org entry
Position3
Best local option

3. Arizona Registered Agent.co: best for Arizona registrations only

Service fee $199, state fee on top; agent $99 a year after that

Our score8.9out of 10

Arizona Registered Agent.co is rated third: $199 plus the state fee, year-one statutory agent service included, then $99 a year for the agent.

The plan lists an in-state street address as the registered office and scans papers served there into your account.

On amounts and features alone, AZ Registered Agent.org and Arizona Registered Agent.co are the same, which makes the order between them a close call.

What you get

  • The registration filing
  • Statutory agent service for year one

Pros

  • The first statutory agent year is covered
  • Agent line of $99 from year two
  • $199 service fee and the registration fee

Trade-offs

  • Arizona only; your home state needs its own agent
  • EIN application billed at $99

The 3 ratings summarized

LineServiceRatingService feeYear twoBest forOpen
1 Mainstay Filing 9.3 $199 $149/yr Companies that register in several states Visit Mainstay FilingPartner link. We may earn money if you buy.
2 AZ Registered Agent.org 9.1 $199 $99/yr The lowest agent renewal we rank here Visit AZ Registered Agent.orgPartner link. We may earn money if you buy.
3 Arizona Registered Agent.co 8.9 $199 $99/yr The lowest agent renewal we rank here Visit Arizona Registered Agent.coPartner link. We may earn money if you buy.
Formation Rated sets each rating out of 10 itself, using the weighted criteria on How we rank; customers have no part in them.

Arizona foreign registration service amounts for 2026: year one, renewal and three-year sum

ServiceYear oneYear twoYear threeThree-year sumAgent paid for year one
Mainstay Filing$199$149$149$497Not stated
AZ Registered Agent.org$199$99$99$397Included
Arizona Registered Agent.co$199$99$99$397Included
Each amount was read from the company's own site on November 12, 2026. Arizona's $150 registration fee is paid in addition to each line and sits outside these sums.

Why Mainstay Filing is on top

Formation Rated puts 27% on cost over years one to three, 27% on inclusions per price and the other 46% on renewal price and terms, fit with state rules and price clarity. In Arizona the order came down to inclusions per price.

A foreign registration involves two states, and one provider with one amount in both rated highest on coverage, ahead of AZ Registered Agent.org.

Each criterion and its weight is listed on How we rank.

Arizona foreign LLC registration: amount, form and office

A company from another state registers by lodging the Foreign Registration Statement (Form L025) with the Arizona Corporation Commission, Corporations Division; the state amount is $150. Arizona also needs certificate of existence or good standing, plus a certified copy of the organizational documents, issued inside 60 days of the filing.

Arizona sets no yearly report for foreign LLCs.

Have these ready

  • Certificate of existence or good standing, plus a certified copy of the organizational documents, issued within 60 days before the filing.
  • Home-state legal name, spelled exactly, and the formation date.
  • An in-state statutory agent; every service rated here can fill the role.
  • $150 to the state, paid with the filing.

What skipping Arizona registration costs

An unregistered outside LLC may not sue in Arizona courts until it registers (A.R.S. 29-3902(B)). Contracts it signs remain valid (A.R.S. 29-3902(C)).

Arizona foreign registration service: your questions

Is registration compulsory for an outside LLC doing business in Arizona?

Yes, once it does business there. An unregistered company cannot bring suit in the state's courts.

What are the costs of foreign registration in Arizona?

$150 to the state plus $199 to the service.

What form does Arizona use to register a foreign LLC?

the Arizona Corporation Commission, Corporations Division handles it; the form's exact title is on the facts line above.

Must the filing include a home-state certificate for Arizona?

Yes: certificate of existence or good standing, plus a certified copy of the organizational documents, with an issue date within 60 days.

Must a statutory agent stay on file after registering?

Yes. A statutory agent with a street address in the state stays on record.

Which foreign registration service holds the top rating in Arizona?

Mainstay Filing, as $199 plus state fees in any state, first-year statutory agent service included.

Source lines

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