How to Change Your Resident Agent in Maryland

To change your resident agent in Maryland, file a resolution or signed statement with the State Department of Assessments and Taxation (SDAT) naming the new agent, pay the $25 filing fee, and the change takes effect the moment SDAT accepts it for record. Corporations use a board resolution; LLCs use a statement signed by an authorized person. The fastest route is the Maryland Business Express portal, which treats online filings as expedited at no extra charge.

Who Qualifies as Your New Agent

Line up a qualified replacement before you file. Maryland requires every corporation and LLC to maintain a resident agent with a physical street address in the state; a P.O. box will not satisfy the requirement because legal papers have to be deliverable by hand during business hours.¹

An individual agent should be a Maryland resident, at least 18 years old. If another business entity will serve, it must be authorized to do business in Maryland. The new agent has to consent to the appointment, and their signature on the filing is how that consent is recorded.

How Corporations File the Change

Maryland corporations have an extra step owners often miss. The board of directors must pass a resolution authorizing the change, and a certified copy of that resolution is what gets filed with SDAT.² SDAT’s standard form, “Resolution to Change Principal Office or Resident Agent,” doubles as the board resolution.¹

If you are only updating the current agent’s address rather than replacing the agent, a corporation can file a simpler statement signed by the president or a vice president.² Either way, the change is effective when SDAT accepts the filing for record.

How LLCs File the Change

LLCs skip the board resolution. An LLC files a statement signed by an authorized person, typically a member or manager depending on how the LLC is structured, and the change takes effect when SDAT accepts it.³

If the existing agent is simply moving to a new Maryland address, the agent can file the change directly without waiting for the LLC to act. That filing has to include the LLC’s name, the old and new addresses, and the effective date. If the agent’s new address will also serve as the LLC’s principal office, the agent can update both at once, provided the agent gives the LLC written notice and states in the filing that notice was sent.³

What the Filing Must Contain

SDAT’s standard form asks for the same core information regardless of entity type:

Your entity’s legal name and SDAT Department ID number.
The current resident agent’s full name and address.
The incoming agent’s full name and physical street address in Maryland.
The new agent’s signature confirming consent, plus the appropriate officer or authorized person signing for the entity.

Get the entity name exactly right. If your name on file with SDAT uses a comma, or spells out “LLC” instead of abbreviating it, your filing has to match. A mismatch delays processing.

How to Submit It and What It Costs

The filing fee is $25 per entity. You have three submission options:

Online through the Maryland Business Express portal. Search for your entity and submit the resolution electronically. Online filings are treated as expedited and processed within seven business days at no additional charge.⁴¹
By mail to SDAT Charter Filings, 301 West Preston Street, Room 801, Baltimore, Maryland 21201. Make checks or money orders payable to “SDAT.” Standard mail processing can take several weeks.⁵
In person at the Baltimore office. Walk-in filings qualify for expedited processing on payment of an additional $50 per document.¹

For most businesses, filing online is the best value: expedited speed, no surcharge.

When Your Current Agent Resigns

A resident agent can quit by filing a signed resignation with SDAT. Timing depends on whether a successor is already in place. If you have appointed one, the resignation is effective immediately on filing. If you haven’t, the resignation takes effect 10 days after filing.³

Ten days is a short window. If your agent gives you informal notice before filing the resignation, start lining up a replacement right then rather than waiting for the official clock.

What Happens If You Let It Lapse

Failing to maintain an active resident agent is one of the common reasons a Maryland business falls out of good standing with SDAT. If left unresolved, SDAT can forfeit your charter, stripping your legal authority to operate in Maryland.⁶

The real risk is lawsuits you never see. Service on your agent of record counts as valid service on your business under Maryland law, even if the papers never reach you.⁷ Miss the response deadline and the court can enter a default judgment. That is how businesses end up owing money on cases they didn’t know existed.

If Your Address Changes, Tell the IRS Separately

SDAT does not forward updates to federal agencies. If changing your resident agent also changes your business’s official mailing address or location, use IRS Form 8822-B to report it. If the change also involves a new “responsible party” for the business, that update must reach the IRS within 60 days.⁸

1
Maryland Department of Assessments and Taxation. Resolution to Change Principal Office or Resident Agent
2
Maryland General Assembly. Maryland Code Corporations and Associations 2-108 – Resident Agent and Principal Office
3
Justia. Maryland Code Corporations and Associations 4A-210 – Resident Agent and Principal Office
4
Maryland Business Express. Make Changes to Your Business
5
Maryland Department of Assessments and Taxation. Charter Filings FAQs
6
Maryland Business Express. Maintain Good Standing Status
7
Maryland General Assembly. Maryland Code Corporations and Associations 1-401 – Service of Process on Resident Agent
8
Internal Revenue Service. About Form 8822-B, Change of Address or Responsible Party – Business