Skip to content
Biz Formation Report

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

Foreign registration report · California

3 Best Foreign Registration Services in California (2026)

By the Biz Formation Report editorial team

Biz Formation Report ranks foreign registration services in California for 2026 as CA Registered Agent.org ($199), Mainstay Filing ($199) and California Registered Agent.ai ($199), in that order. CA Registered Agent.org earns the top grade: $199 plus the state fee, one year of agent for service of process service included, then $99 a year for the agent.

No.1

Top pick on this page

1. CA Registered Agent.org: best for companies adding California alone

Score9.2out of 10
A $199 service fee and the state fee, then the agent at $99

Top grade, CA Registered Agent.org: the California registration for $199 with year-one agent service included, then $99 a year.

The plan seats the company at an in-state street address and posts scans of papers served there to your online account.

Its three-year total is below Mainstay Filing's, a gain in the cost criterion.

What you get

  • Filing with the state
  • Year-one agent for service of process service

Good

  • $99 annually to keep the agent
  • First-year agent for service of process service is part of the price
  • A $199 registration price, state fee extra

Weak spots

  • Serves California only; the home state still needs its own agent
  • The EIN application costs $99 extra
Visit CA Registered Agent.orgPartner link. We may earn money if you buy.
Read the CA Registered Agent.org review
No.2

Best for expanding companies

2. Mainstay Filing: best for companies registered in several states

Score8.9out of 10
$199 plus the state fee ($269 due at checkout), then $149 a year for the agent from year two

Second grade, Mainstay Filing: the California registration is filed for $199, and the agent for service of process is free in year one, then $149 a year.

The agent is free in year one, then costs $149 a year, whatever state the company registers in.

CA Registered Agent.org is $100 cheaper across three years, and that difference lowers Mainstay Filing's cost grade.

What you get

  • Preparation and filing of the registration documents
  • Papers served on the company scanned and uploaded the same business day, at no cost

Good

  • $199 service fee plus the state's fee
  • Served papers scanned within the same business day, free
  • One price across all fifty states

Weak spots

  • The agent renews at $149, $50 more than CA Registered Agent.org
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing review
No.3

Best for a California-only company

3. California Registered Agent.ai: best for registering in California only

Score8.8out of 10
$199 service fee and the state fee on top; the agent is $99 annually from year two

Third grade, California Registered Agent.ai: the California registration for $199 with year-one agent service included, then $99 a year.

The plan seats the company at an in-state street address and posts scans of papers served there to your online account.

The two state services, CA Registered Agent.org and California Registered Agent.ai, match on price and features, and the order between them is a narrow call.

What you get

  • Filing with the state
  • Agent for service of process service for year one

Good

  • Year-one agent for service of process service is covered
  • $99 annually to keep the agent
  • Registers the company at $199 plus filing fees

Weak spots

  • Serves California only; the home state still needs its own agent
  • The EIN application costs $99 extra
Visit California Registered Agent.aiPartner link. We may earn money if you buy.
Read the California Registered Agent.ai review

Summary of the 3 grades

RankProviderGradeService feeYear twoBest fitSite
1CA Registered Agent.org9.2$199$99/yrThe lowest agent renewal we rank hereVisit CA Registered Agent.orgPartner link. We may earn money if you buy.
2Mainstay Filing8.9$199$149/yrCompanies with a presence in several statesVisit Mainstay FilingPartner link. We may earn money if you buy.
3California Registered Agent.ai8.8$199$99/yrThe lowest agent renewal we rank hereVisit California Registered Agent.aiPartner link. We may earn money if you buy.

Each grade out of 10 comes from Biz Formation Report's editors and the weighted criteria on How we rank; no customer ratings are involved.

California foreign registration service prices, 2026: year one, renewal and three-year outlay

ProviderYear 1Year 2Year 3Three-year outlayYear-one agent covered
CA Registered Agent.org$199$99$99$397Included
Mainstay Filing$199$149$149$497Not stated
California Registered Agent.ai$199$99$99$397Included

All prices were taken from the companies' own websites on November 12, 2026. California's $70 registration fee is payable on top of each row and is not part of these totals.

Why the order falls this way

Biz Formation Report grades three-year bill and what the money buys at 32% each, leaving 36% for renewal handling, local rules match and pricing openness. In California, three-year bill settled the order.

Total outlay with CA Registered Agent.org over three years: $397, $100 less than Mainstay Filing. Both providers include the first agent year, so the renewal price set the order.

Every criterion and weight is listed on How we rank.

California foreign LLC registration: fee, document and filing office

To register, the outside company submits the Application to Register a Foreign Limited Liability Company (LLC) (Form LLC-5) to the California Secretary of State, Business Entities, with a state fee of $70. California also wants certificate of good standing (existence or status) from the home state, dated within 180 days of the filing.

After registration the company owes the Statement of Information, Form LLC-12 ($20), due within 90 days of registering, then every 2 years.

Documents to have on hand

  • Certificate of good standing (existence or status) from the home state, dated within 180 days of filing.
  • The legal name as recorded in the home state, and the date of formation.
  • An in-state agent for service of process; any provider in this report can serve.
  • Payment of the $70 state fee with the filing.
  • The due date of the Statement of Information, Form LLC-12 and its $20 fee, noted in your calendar.

The cost of skipping California registration

An unregistered foreign LLC has no right to sue in California courts until it registers (Corp. Code 17708.07(a)).

California foreign registration service: common questions

Must an LLC from another state register with California?

Yes, as soon as it transacts business there. Until then it has no standing to bring a lawsuit in the state's courts.

How much does California foreign registration cost?

$70 goes to the state and $199 to the service.

Which form handles foreign registration with California?

The state names the form in the facts above; it is sent to the California Secretary of State, Business Entities.

Does California demand proof of good standing from the home state?

Yes. The filing needs certificate of good standing (existence or status) from the home state, issued no more than 180 days ago.

Is a agent for service of process still needed after foreign registration?

Yes. A agent for service of process with a street address in the state has to remain on file.

What is the best foreign registration service for California?

CA Registered Agent.org: $199 beyond the state fee to register in California, agent renewing at $99.

Related pages

Source notes

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