3 Best Foreign Registration Services in Texas (2026)
LLC Review Desk's 2026 picks for foreign registration services in Texas, favorite first, are TX Registered Agent.org ($199), Mainstay Filing ($199) and Texas Registered Agent.ai ($199). TX Registered Agent.org is our favorite, because registering in Texas costs $199 and covers year one as your agent, then $99 a year.
By the LLC Review Desk editorial team
Position 1
Best here
1. TX Registered Agent.org: best for companies adding only Texas
$199 for the service and the state's fee too; the agent costs $99 a year after that
Our score
9.5out of 10
9.5 out of 10
Our favorite is TX Registered Agent.org, because $199 beyond the state fee gets you registered in Texas, and the agent renews at $99.
You get a street address in the state for your registered office, and any papers served on the company are scanned into your online account.
This is where it beats Mainstay Filing: what you pay over three years.
2. Mainstay Filing: best for owners working in more than one state
Service fee $199, state fee extra; $149 a year for the agent from year two
Our score
9.3out of 10
9.3 out of 10
Coming in second is Mainstay Filing, because you pay $199 on top of the state's fee, your first year as registered agent is free, and the price is the same in every state.
Your free agent year ends after twelve months, and then it's $149 a year in any state.
TX Registered Agent.org is $100 cheaper over three years, so Mainstay Filing comes second on cost.
In the price
Preparation and filing of the registration
A free year as your registered agent
Papers served on the company are scanned and uploaded the same business day, free
What we like
$199 for the service, plus the state's fee
Your first year of registered agent service is free
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 TX 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 Texas 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
TX Registered Agent.org
$199
$99
$99
$397
Included
Mainstay Filing
$199
$149
$149
$497
Free
Texas 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, Texas charges a $750 registration fee, which isn't in these totals.
How the order came together
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 Texas, three-year cost made the difference.
TX Registered Agent.org comes to $397 over three years, which is $100 less than Mainstay Filing. Both include the first year, so the renewal price decided it.
You can read every criterion and weight on How we rank.
Registering a foreign LLC in Texas: fee, form and who to send it to
You register through the Texas Secretary of State, using the Application for Registration of a Foreign Limited Liability Company (Form 304). The state charges $750.
After that, plan on the Public Information Report each cycle by May 15.
Get these ready first
Your company's full legal name, exactly as registered at home, and the date it was formed there.
A registered agent with a street address in the state. Any service on this page can do it.
The $750 state fee to pay with the filing.
A reminder for yourself about the Public Information Report.
What happens if you skip Texas registration
Until it registers, an out-of-state LLC can't sue in Texas courts (BOC 9.051(b)). Its contracts still stand (BOC 9.051(c)).
Your questions about Texas foreign registration services
Do I have to register my out-of-state LLC in Texas?
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 Texas come to?
The state charges $750, and services charge $199.
What form does Texas use for foreign LLCs?
The state's form is the Application for Registration of a Foreign Limited Liability Company (Form 304), and it goes to the Texas Secretary of State.
Do I still need a registered agent after I register?
Yes. You keep a registered agent with a street address in the state as long as the company stays registered.
Which foreign registration services did we review here?
TX Registered Agent.org ($199), Mainstay Filing ($199) and Texas Registered Agent.ai ($199), with our favorite first.
Who's the best choice for foreign registration in Texas?
TX Registered Agent.org, because it's $199 plus the state fee, with your first registered agent year included, then $99 a year for the agent.