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Researched and written by the Launchwise Review editorial team
Launchwise Review

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

Launch guide · California · foreign registration

3 Best Foreign Registration Services in California (2026)

Researched and written by the Launchwise Review editorial team
For a 2026 launch in California, Launchwise Review grades foreign registration services this way: California Registered Agent.ai ($199), CA Registered Agent.org ($199) and Mainstay Filing ($199). California Registered Agent.ai earns the top grade here: $199 plus the state fee, year-one agent for service of process service included, then $99 a year for the agent.
1
Best here

1. California Registered Agent.ai: best for companies adding only California

Pay $199 plus the state fee, then $99 a year for the agent

Our mark 9.3 out of 10

Top grade, California Registered Agent.ai: it registers the company in California for $199, first agent year included, then $99 a year.

You get an in-state street address for the registered office, and any papers served on the company are scanned into your online account.

Three years of its fees come to less than Mainstay Filing charges.

In the price

  • Registration prepared and filed
  • One year of agent for service of process service to begin with

Pros

  • Your first agent for service of process year comes at no cost
  • Registration costs $199 before state fees
  • Keeps your agent for $99 yearly

Less good

  • California only; the home state needs its own agent
  • EIN application costs extra ($99)
Visit California Registered Agent.aiPartner link. We may earn money if you buy.
Read the California Registered Agent.ai launch review
2
Lower renewal than Mainstay

2. CA Registered Agent.org: best for California registrations only

Service $199, state fee extra; the agent then costs $99 each year

Our mark 9.0 out of 10

Next up is CA Registered Agent.org: it registers the company in California for $199, first agent year included, then $99 a year.

You get an in-state street address for the registered office, and any papers served on the company are scanned into your online account.

CA Registered Agent.org copies California Registered Agent.ai on price and features, so the pair is close to level.

In the price

  • Registration prepared and filed
  • One year of agent for service of process service to begin with

Pros

  • Keeps your agent for $99 yearly
  • $199 covers the registration work, fees extra
  • Covers the first year of agent for service of process service

Less good

  • California only; the home state needs its own agent
  • EIN application costs extra ($99)
Visit CA Registered Agent.orgPartner link. We may earn money if you buy.
Read the CA Registered Agent.org launch review
3
Fifty-state coverage

3. Mainstay Filing: best for founders working in several states

$199 for the service, $269 due at checkout including the state fee; agent service is $149 a year from the second year

Our mark 8.9 out of 10

Rounding out the list is Mainstay Filing: $199 on top of the state fee, a free first year as agent for service of process and the same price in any state.

Once the free first year ends, the agent is $149 a year, in any state.

California Registered Agent.ai is $100 lower across three years, which puts Mainstay Filing behind it on cost.

In the price

  • Your foreign registration, handled
  • Papers served on the company scanned and uploaded the same business day, no charge

Pros

  • Papers served on the company are scanned the same business day, free
  • One price in every state
  • $199 for the service, with the state fee added

Less good

  • The agent costs $149 a year after year one, $50 above California Registered Agent.ai
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing launch review

The 3 grades at a glance

Place Company Launch grade Service price Second year Best fit Go
1 California Registered Agent.ai 9.3 $199 $99/yr The lowest agent renewal on this page Visit California Registered Agent.aiPartner link. We may earn money if you buy.
2 CA Registered Agent.org 9.0 $199 $99/yr The lowest agent renewal on this page Visit CA Registered Agent.orgPartner link. We may earn money if you buy.
3 Mainstay Filing 8.9 $199 $149/yr Founders opening a second state Visit Mainstay FilingPartner link. We may earn money if you buy.
Each grade out of 10 reflects our editors' reading of the weighted criteria on How we rank, not a customer rating.

California foreign registration service cost in 2026: first year, renewals, three-year total

Company Year 1 Year 2 Year 3 Three years, total Agent covered, year one
California Registered Agent.ai $199 $99 $99 $397 Included
CA Registered Agent.org $199 $99 $99 $397 Included
Mainstay Filing $199 $149 $149 $497 Not stated
Prices were copied from each company's own pages on November 12, 2026. Add California's $70 registration fee to any row; it is not in the totals.

How we graded this list

Launchwise Review puts 26% on cost to launch and stay and 26% on launch paperwork handled, then spreads 48% over renewal behavior, state match and price transparency. For California, the call came down to cost to launch and stay.

California Registered Agent.ai comes to $397 over three years, $100 under Mainstay Filing. Both include year one, so the renewal price broke the tie.

Every criterion and weight is listed on How we rank.

Opening in California as a foreign LLC: fee, form and office

Your registration goes to the California Secretary of State, Business Entities, on the Application to Register a Foreign Limited Liability Company (LLC) (Form LLC-5). Budget $70 for the state. Have certificate of good standing (existence or status) from the home state in hand too, dated within 180 days of filing; California asks for it.

Calendar item for later: the Statement of Information, Form LLC-12 at $20, due within 90 days of registering, then every 2 years.

Before you file, get these together

  • Certificate of good standing (existence or status) from the home state, issued within 180 days of your filing date.
  • Your company's exact legal name and the date it was formed at home.
  • A agent for service of process with a street address in the state; every company graded on this page can serve.
  • The $70 state fee, ready to pay with the filing.
  • A calendar reminder for the Statement of Information, Form LLC-12 and its $20 fee.

What skipping California registration can cost you

Without registration, an outside LLC cannot bring a lawsuit in California courts (Corp. Code 17708.07(a)).

Quick answers about California foreign registration services

When does an LLC from elsewhere have to register in California?

Once it does business there. Until then it cannot bring a lawsuit in the state's courts.

What should I budget to bring an existing LLC into California?

The state fee is $70; add a service fee of $199.

Which form brings a foreign LLC into California?

Ask the California Secretary of State, Business Entities for the Application to Register a Foreign Limited Liability Company (LLC) (Form LLC-5).

Do I need a document from my home state first?

Yes, order certificate of good standing (existence or status) from the home state and file within 180 days of its date.

Does the foreign LLC still need a agent for service of process?

Yes. Keep a agent for service of process with a street address in the state for as long as the company is registered there.

Which service is the best way to register a foreign LLC in California?

California Registered Agent.ai, because $199 beyond the state fee gets the company into California, with the agent renewing at $99.

Read next

Sources and dates

  1. California Secretary of State, dated August 2026
  2. California Secretary of State, dated August 2026
  3. California yearly filing: Statement of Information, official source, dated October 2026
  4. Cal. Corp. Code § 17702.01, dated August 2026
  5. California registered agent statute, dated October 2026
  6. California Secretary of State, foreign LLC forms, dated October 2026
  7. Form LLC-5, dated October 2026
  8. Corporations Code section 17708.03, dated October 2026
  9. Revenue and Taxation Code section 19135, dated October 2026
  10. Franchise Tax Board, LLC filing requirements, dated October 2026
  11. California Corporations Code 17708.07, dated November 2026
  12. From California Registered Agent.ai: pricing and service pages, copied November 12, 2026
  13. From CA Registered Agent.org: pricing and service pages, copied November 12, 2026
  14. From Mainstay Filing: California service page, copied November 12, 2026