3 Best Foreign Registration Services in Maryland (2026)
LLC Review Desk's 2026 picks for foreign registration services in Maryland, favorite first, are Maryland Registered Agent.co ($199), Mainstay Filing ($199) and MD Registered Agent.org ($199). Maryland Registered Agent.co is our favorite, because it's $199 plus the state fee, with your first resident agent year included, then $99 a year for the agent.
By the LLC Review Desk editorial team
Position 1
Number one here
1. Maryland Registered Agent.co: best for companies adding only Maryland
You pay $199 plus the state fee, then $99 a year for the agent
Our score
9.4out of 10
9.4 out of 10
Our favorite is Maryland Registered Agent.co, because registering in Maryland costs $199 and covers year one as your agent, then $99 a year.
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.
You pay less over three years than with Mainstay Filing.
In the price
Foreign registration done for you
A year of resident agent service at the outset
What we like
Free resident agent service in year one
$99 a year for the agent from year two
A $199 service price plus the registration fee
Trade-offs
Maryland only; your home state needs its own agent
Every score out of 10 is our editors' call, made with the weighted criteria on How we rank, not a customer rating.
What Maryland 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
Maryland Registered Agent.co
$199
$99
$99
$397
Included
Mainstay Filing
$199
$149
$149
$497
Not stated
MD Registered Agent.org
$199
$99
$99
$397
Included
We took each price from the company's own pages on November 12, 2026. On top of every row, Maryland charges a $100 registration fee, which isn't in these totals.
How we scored these
LLC Review Desk gives three-year cost 29% and filings in the price 29%, then divides 42% among renewal price, state fit and up-front totals. For Maryland, it came down to three-year cost.
Maryland Registered Agent.co 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 Maryland: fee, form and who to send it to
You register through the Maryland State Department of Assessments and Taxation (SDAT), Charter Division, using the Limited Liability Company Registration (For non-Maryland Limited Liability Company). The state charges $100. Maryland also wants written proof of existence from the home state, equivalent to a certificate of good standing that is no more than 60 days old.
After that, plan on the Business Entity Annual Report and Personal Property Return, Form 1 each cycle ($300) by April 15.
Get these ready first
Written proof of existence from the home state, equivalent to a certificate of good standing, issued within 60 days of when you file.
Your company's full legal name, exactly as registered at home, and the date it was formed there.
A resident agent with a street address in the state. Any service on this page can do it.
The $100 state fee to pay with the filing.
A reminder for yourself about the Business Entity Annual Report and Personal Property Return, Form 1 and its $300 fee.
What happens if you skip Maryland registration
Until it registers, an out-of-state LLC can't sue in Maryland courts (4A-1007(a)). Its contracts still stand (4A-1007(b)).
Your questions about Maryland foreign registration services
Do I have to register my out-of-state LLC in Maryland?
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 Maryland come to?
The state charges $100, and services charge $199.
Does Maryland want paperwork from my home state?
It does: written proof of existence from the home state, equivalent to a certificate of good standing, no more than 60 days old.
Do I still need a resident agent after I register?
Yes. You keep a resident agent with a street address in the state as long as the company stays registered.
Which foreign registration services did we review here?
Maryland Registered Agent.co ($199), Mainstay Filing ($199) and MD Registered Agent.org ($199), with our favorite first.
Who's the best choice for foreign registration in Maryland?
Maryland Registered Agent.co, because $199 beyond the state fee gets you registered in Maryland, and the agent renews at $99.