Maryland Business Entity Search

Find Maryland LLCs, corporations, and registered businesses. Cross-referenced with the Maryland SDAT and 12+ state registries.

Browse the Maryland registry →

How to search Maryland business entities

Every business that operates legally in Maryland files a public record with the Maryland State Department of Assessments and Taxation (SDAT). That record names the entity, identifies its registered agent for service of process, and tracks every formal filing through dissolution. Those records are open to anyone — that is the legal definition of a public registry.

Corporate.AI is a free, structured front door to Maryland's public business filings. We mirror the state's data, normalize it against records from 49 other jurisdictions, and add the cross-state intelligence (shared officers, shared registered agents, NAICS sector classification, beneficial-ownership signals) that a single-state portal cannot provide. Use the search above to look up any Maryland entity by name, by primary filing number, or by officer.

For absolute freshness — same-day filings, formal certificates of good standing, certified document copies — you should also have the Maryland SDAT portal bookmarked. We link directly to it from this page.

About the Maryland SDAT

The Maryland State Department of Assessments and Taxation (SDAT) is the office of record for every business entity formally registered in Maryland. They maintain the public registry, accept new filings, and issue certificates of good standing. Corporate.AI mirrors and normalizes this data alongside records from 49 other jurisdictions.

Domestic LLC filing fee
~$100
Domestic Corp filing fee
~$100

Maryland's business entity registry sits with the State Department of Assessments and Taxation, not the SOS — a quirk shared with only a handful of states.

Maryland business entity search FAQ

How do I search Maryland business entities?▶

Use the search box above to query Corporate.AI for any Maryland-registered LLC, corporation, nonprofit, or partnership. You can also search directly at the Maryland SDAT's public registry portal. Corporate.AI consolidates Maryland entity records with cross-state filings (foreign registrations, officer overlap, registered-agent networks) so a single search returns more context than the state portal alone.

Is Maryland business entity search free?▶

Yes. Public Maryland business filings are open records. Corporate.AI never charges to look up an entity, its registered agent, officers, or filing history. The Maryland SDAT also offers free public search; premium services (certified copies, certificates of good standing) typically cost $100 or more depending on document type.

What information is included in a Maryland entity search?▶

Each Maryland entity record on Corporate.AI includes the registered legal name, entity type (LLC, Corporation, LP, Nonprofit), formation date, current status, primary filing number assigned by the Maryland SDAT, registered agent (when published), officer roster (when published), and full filing history. We also surface entities that share officers, registered agents, or NAICS sector classifications across all 50 states.

How do I get a Maryland certificate of good standing?▶

A certificate of good standing (sometimes called a certificate of existence or status certificate) must be issued by the Maryland SDAT directly — Corporate.AI does not issue official certificates. You can typically request one online from the Maryland SDAT for $25–$50 with same-day or 24-hour turnaround. The certificate confirms the entity is in good standing as of the issuance date.

How do I look up a registered agent in Maryland?▶

Every Maryland business entity is required to designate a registered agent — a person or company authorized to receive service of process at a Maryland street address. Corporate.AI's registered-agent index lets you reverse-search: given an agent name, see every Maryland entity that has designated them. This pattern is useful for due diligence, beneficial-ownership analysis, and competitive research. The Maryland SDAT's portal supports forward lookup (entity → agent) but typically not reverse lookup.

What's the difference between an LLC and a corporation in Maryland?▶

A Maryland LLC (limited liability company) is the most common entity type for small businesses — it offers liability protection with pass-through taxation and minimal corporate formalities. A Maryland corporation (typically a C-corp or S-corp) is owned by shareholders, governed by a board, and is the standard vehicle for raising outside investment. Formation fees are similar — $100 for an LLC vs $100 for a corporation in Maryland as of 2026 — but the tax, governance, and capital-raising profiles differ significantly.

How recent is the Maryland business data on Corporate.AI?▶

Maryland entity records on Corporate.AI are refreshed from the Maryland SDAT's public feed on the cadence the state publishes — daily, weekly, or monthly depending on jurisdiction. Each entity page displays a "last refreshed" timestamp so you can verify how recent the underlying record is. For absolute freshness, cross-check against the Maryland SDAT's live portal (linked above) before relying on a record for legal or contractual purposes.

Can I download Maryland business entity data?▶

Yes. Corporate.AI's REST API and MCP server expose Maryland entity records in machine-readable form for licensed use cases — KYC/AML programs, sales prospecting, journalism, academic research. Bulk downloads of the Maryland SDAT's underlying data are typically available directly from the state, sometimes free and sometimes for a fee. See our /api page for licensing terms.