3 Best Foreign Registration Services in California (2026)
LLC Review Desk's 2026 picks for foreign registration services in California, favorite first, are Mainstay Filing ($199), CA Registered Agent.org ($199) and California Registered Agent.ai ($199). Mainstay Filing is our favorite, because you pay $199 on top of the state's fee, your first year as agent for service of process is free, and the price is the same in every state.
By the LLC Review Desk editorial team
Position 1
Number one here
1. Mainstay Filing: best for owners working in more than one state
$199 for the service, $269 due at checkout with the state fee; the agent is $149 a year from year two
Our score
9.3out of 10
9.3 out of 10
Our favorite is Mainstay Filing, because $199 gets the California registration filed, year one as agent for service of process costs nothing, and after that it's $149 a year.
Once year one is over, you pay $149 a year for the agent, whichever state you picked.
Over three years it costs $100 more than CA Registered Agent.org, and for us the extra things it handles are worth that.
In the price
Registration paperwork prepared and sent in
Free scans of served papers, same business day
What we like
$199 for the service, plus the state's fee
Same-business-day scans of papers served on the company, no charge
The same price in all fifty states
Trade-offs
After year one the agent is $149 a year, $50 more than CA Registered Agent.org
LLC Review Desk gives each score out of 10 itself, based on the criteria on How we rank. No customer ratings are involved.
What California foreign registration services cost in 2026: year one, renewals and three years
Service
First year
Second year
Third year
Three-year total
Agent covered in year one
Mainstay Filing
$199
$149
$149
$497
Not stated
CA Registered Agent.org
$199
$99
$99
$397
Included
California Registered Agent.ai
$199
$99
$99
$397
Included
We took each price from the company's own pages on November 12, 2026. On top of every row, California charges a $70 registration fee, which isn't in these totals.
Why we ordered them this way
Here's how we scored it: three-year cost and filings in the price are worth 29% each, and renewal price, state fit and up-front totals split the other 42%. In California, filings in the price made the difference.
Registering in a second state means working with two states, so one company at one price for both won the coverage score over CA Registered Agent.org.
You can read every criterion and weight on How we rank.
Registering a foreign LLC in California: fee, form and who to send it to
You register through the California Secretary of State, Business Entities, using the Application to Register a Foreign Limited Liability Company (LLC) (Form LLC-5). The state charges $70. California also wants certificate of good standing (existence or status) from the home state that is no more than 180 days old.
After that, plan on the Statement of Information, Form LLC-12 each cycle ($20) by within 90 days of registering, then every 2 years.
Get these ready first
Certificate of good standing (existence or status) from the home state, issued within 180 days of when you file.
Your company's full legal name, exactly as registered at home, and the date it was formed there.
A agent for service of process with a street address in the state. Any service on this page can do it.
The $70 state fee to pay with the filing.
A reminder for yourself about the Statement of Information, Form LLC-12 and its $20 fee.
What happens if you skip California registration
Until it registers, an out-of-state LLC can't sue in California courts (Corp. Code 17708.07(a)).
Your questions about California foreign registration services
Do I have to register my out-of-state LLC in California?
If it does business there, yes. Until it registers, it can't sue in the state's courts.
What does registering a foreign LLC in California come to?
The state charges $70, and services charge $199.
What form does California use for foreign LLCs?
The state's form is the Application to Register a Foreign Limited Liability Company (LLC) (Form LLC-5), and it goes to the California Secretary of State, Business Entities.
Does California want paperwork from my home state?
It does: certificate of good standing (existence or status) from the home state, no more than 180 days old.
Do I still need a agent for service of process after I register?
Yes. You keep a agent for service of process with a street address in the state as long as the company stays registered.
Who's the best choice for foreign registration in California?
Mainstay Filing, because it's $199 beyond the state fee in any state, and the first agent for service of process year is included.