To register a foreign LLC in Maryland, file a Foreign Limited Liability Company Registration form with the State Department of Assessments and Taxation (SDAT), include a Certificate of Good Standing issued within the last 60 days by your home state, pay the $100 filing fee, and designate a Maryland resident agent.1Maryland General Assembly. Maryland Code Corporations and Associations 4A-1002 – Registration2Maryland State Department of Assessments and Taxation. Limited Liability Company Registration You have to do this before conducting business in the state, not after.
Do You Actually Need to Register?
Not every connection to Maryland triggers the requirement. The state specifically excludes holding internal member meetings, maintaining a bank account in Maryland, defending yourself in a Maryland lawsuit, and conducting a single transaction that isn’t part of a pattern of similar deals.3New York Codes, Rules and Regulations. Maryland Code Corporations and Associations 4A-1009 – Doing Business, Defined
Owning income-producing real estate or tangible personal property in Maryland, however, counts as doing business no matter what else is going on.3New York Codes, Rules and Regulations. Maryland Code Corporations and Associations 4A-1009 – Doing Business, Defined Employing workers in the state, keeping a physical office there, or repeatedly contracting with Maryland customers all point the same way. When your situation sits in the gray zone, register anyway. The $100 filing fee is far cheaper than the penalty for guessing wrong.
What You Need Before You File
An Available Name
Your LLC’s name has to be distinguishable from every other entity on file with SDAT.4New York Codes, Rules and Regulations. Maryland Code Corporations and Associations 1-504 – Distinguishable Names Run a free search through the Maryland Business Express name search tool before you commit to anything else.5Maryland Business Express. Select a Business Name The name must also include “Limited Liability Company” or one of the accepted abbreviations: LLC, L.L.C., LC, or L.C.6Maryland General Assembly. Maryland Code Corporations and Associations 1-502 – Requirements
If your existing name conflicts with a Maryland entity, you can either add a distinguishing word to it or adopt a fictitious name for Maryland use only.7New York Codes, Rules and Regulations. Maryland Code Corporations and Associations 1-506 – Foreign Entities, Registration Either version has to satisfy the same suffix and distinguishability rules as a domestic LLC. If you’ve found a name you want but aren’t ready to file, you can hold it with a Name Reservation Application for $25.8Maryland State Department of Assessments and Taxation. Corporate Name Reservation Application
A Maryland Resident Agent
Every foreign LLC registered in Maryland must name a resident agent to accept legal papers on its behalf. The agent must be one of the following:
- An adult Maryland citizen
- A Maryland corporation
- A Maryland LLC
- A Maryland limited partnership or LLLP
Your LLC cannot act as its own agent. The address has to be a real Maryland street address. P.O. boxes, UPS stores, mailbox services, and virtual addresses are all out.9Maryland Business Express. Register Your Business If you don’t know anyone in the state who qualifies, commercial registered agent services typically charge somewhere in the range of $50 to $200 a year.
A Current Certificate of Good Standing
You need a Certificate of Good Standing (sometimes called a Certificate of Existence) from the state where your LLC was formed. It proves the entity is active and compliant at home. Maryland requires the certificate to be dated within 60 days of when you submit the registration.2Maryland State Department of Assessments and Taxation. Limited Liability Company Registration If yours is older, SDAT rejects the application. Some home states take a week or more to issue the document, so order it early.
Filing the Registration
The registration goes on SDAT’s Foreign Limited Liability Company Registration form. It asks for your LLC’s legal name, the jurisdiction where it was formed, the address of its principal office, and a description of the business it plans to conduct in Maryland.2Maryland State Department of Assessments and Taxation. Limited Liability Company Registration
Submit the form, the Certificate of Good Standing, and the fee through the Maryland Business Express online portal, or mail everything to SDAT in Baltimore. The standard filing fee is $100.2Maryland State Department of Assessments and Taxation. Limited Liability Company Registration Standard online and mailed filings have no published turnaround guarantee, so plan for at least a few weeks.
If you need approval the same day, SDAT offers an expedited dropbox service at its Baltimore office for an additional $425.10Maryland Department of Assessments and Taxation. Businesses in Maryland It’s expensive, but it’s the only guaranteed same-day option.
Once SDAT approves the filing, you’ll get a confirmation — by email for online submissions, or a stamped copy returned by mail. At that point your foreign LLC is qualified to do business in Maryland.
What Happens If You Skip Registration
The sharpest consequence isn’t the fine. An unregistered foreign LLC cannot file or maintain a lawsuit in any Maryland court until it pays the penalty and either registers or stops doing business in the state.11Justia. Maryland Code Corporations and Associations 4A-1007 – Doing Business Without Registration If a customer stops paying or a contractor walks away from a deal, you cannot enforce your rights in a Maryland courtroom until you fix the registration problem first.
SDAT also imposes a $200 penalty on any foreign LLC that does business in Maryland without registering, and individual members or agents who transact that business can face misdemeanor charges and fines up to $1,000 each.11Justia. Maryland Code Corporations and Associations 4A-1007 – Doing Business Without Registration
The one piece of good news: operating without registration does not void your contracts or stop you from defending yourself if someone sues you.11Justia. Maryland Code Corporations and Associations 4A-1007 – Doing Business Without Registration Existing deals stay legally valid. You just can’t go on offense in court.
After You’re Registered
Registration is the start, not the finish. Each year your foreign LLC has to file an Annual Report and Personal Property Tax Return with SDAT. For 2026, the deadline is April 15, with a 60-day extension available that moves it to June 15.12Maryland Department of Assessments and Taxation. Departmental Forms and Applications If you begin filing online but don’t finish within 90 days or by year-end, SDAT deletes the incomplete filing and you start over.13Maryland Department of Assessments and Taxation. Annual Report and Personal Property Missing the report long enough can lead to forfeiture of your good standing in Maryland, which defeats the point of registering.
Separately, your LLC may need to register for Maryland tax accounts, especially if it has employees in the state, collects sales tax, or earns income sourced to Maryland. The Comptroller of Maryland handles state tax registrations, not SDAT. Qualifying with SDAT does not cover your tax accounts.