How to Start an LLC in Maryland: A Step-by-Step Guide (2027)

How to Start an LLC in Maryland (Quick Answer)

To start an LLC in Maryland, file the Articles of Organization with the State Department of Assessments and Taxation (SDAT) through Maryland Business Express, and pay the $100 base filing fee. Once the state approves it, your LLC legally exists, and from then on it files a flat $300 Combined Annual Report and Personal Property Return by April 15 each year, regardless of revenue or property owned.

First-year cost: $100 if you file the Articles of Organization yourself. If you are not based in Maryland, add a registered-agent service, commonly $35 to $300 a year, plus an optional $25 name reservation.

Every Maryland LLC owner pays two income taxes on the same dollar of profit: the state's, and whichever county's on top of it. Baltimore City and all 24 counties add a local "piggyback" tax that stacks on the state rate, something few other states do at all.

That quirk cuts both ways. Maryland also sits next to Washington, DC, with real federal contracting density in Montgomery and Prince George's counties, biotech clustered around NIH and Fort Detrick, and cybersecurity work tied to NSA and Fort Meade. For founders chasing federal or life-sciences business, that proximity is a genuine advantage. For everyone else, the flat annual fees and stacked local tax add cost that a lot of other states don't charge.

TL;DR

• The tax structure is layered: Maryland charges a graduated state income tax plus a county (or Baltimore City) piggyback tax that stacks on top, an unusual combination among states.
• Step 1, name: reserve your LLC name with SDAT for $25, but note the hold is only 30 days, shorter than most states.
• Step 2, resident agent: Maryland calls this role a "resident agent," and it must be a Maryland resident or an active Maryland entity with a street address.
• Step 3, Articles of Organization: filed through Maryland Business Express for a $100 base fee, with paid options to speed things up.
• Step 4, EIN: free from the IRS, online for SSN/ITIN holders, Form SS-4 for everyone else.
• Step 5, Form 5472: applies to 25%+ foreign-owned single-member LLCs, with a $25,000 minimum penalty for missing it.
• Step 6, ongoing compliance: a $300 flat Annual Report and Personal Property Return is due every April 15, regardless of revenue or whether the LLC owns any property.

Why Form an LLC in Maryland

Maryland's biggest draw isn't its tax code, it's its map. Founders targeting federal contracts, biotech, or cybersecurity work often find real advantages forming and operating close to the agencies and research institutions that drive those industries.

• Federal contracting density: Montgomery County and Prince George's County sit directly against DC, with an outsized share of federal contracting activity for their size.
• Biotech and life sciences: proximity to NIH and Fort Detrick gives Maryland a genuine research and funding ecosystem for life-sciences founders.
• Cybersecurity: Fort Meade and the NSA anchor a dense cybersecurity contractor base, particularly around Baltimore and Anne Arundel County.

The tradeoff is cost and complexity most states don't have. A flat $300 Annual Report fee applies even to an LLC with zero personal property, and the county piggyback tax means your effective income tax rate depends on which county you're registered in, not just which bracket you fall into.

Step 1: Choose and Reserve Your LLC Name

Your name has to include a designator and be distinguishable from every other business entity already on file with Maryland's State Department of Assessments and Taxation (SDAT).

• Required designator: "LLC," "L.L.C.," or "Limited Liability Company" somewhere in the name.
• Distinguishable, not just different: SDAT checks against existing registered names in its database before approving a filing.
• Reservation is short-lived: the Corporate Name Reservation Application costs $25 and holds the name for only 30 days, a narrower window than most states offer.
• Expediting the reservation: an additional $20 gets it processed faster if you're on a deadline.
• Letting it lapse just means paying twice: if you're not ready to file when the 30 days run out, SDAT doesn't extend the hold, it makes you file the same $25 application again for another 30-day window.

Given how quickly that clock runs out, it rarely makes sense to lock in a name unless you're genuinely about to submit the Articles of Organization. Reserve too early and you may end up paying for the same name twice.

Step 2: Appoint a Resident Agent

Maryland doesn't use the term "registered agent." State filings call this role a resident agent, but the function is the same: someone available at a Maryland street address to accept legal notices and state correspondence on the LLC's behalf.

Who Qualifies as a Resident Agent

The state requires the resident agent to meet one of two conditions:

• An individual Maryland resident, at least 18 years old, with a physical Maryland street address.
• An active Maryland corporation or LLC, already in good standing, that offers resident agent services.

A PO box is not expected to satisfy the address requirement, consistent with how most states handle this role, though Maryland's own guidance doesn't spell that out as explicitly as some other states do. Confirm current requirements directly with SDAT before filing if this affects your setup.

Changing Your Resident Agent Later

If your resident agent or their address changes after formation, you file a Resolution with SDAT to update the record. The fee is $25. Skipping this step leaves your LLC's official address out of date with the state, which can delay or misdirect legal notices.

Step 3: File Your Articles of Organization

The Articles of Organization is the document that legally creates your LLC. Maryland processes it through Maryland Business Express, SDAT's online filing portal.

There's some conflicting information on whether standard online filings process the same day or take Maryland's typical 5 to 7 business days. Check current processing status directly on egov.maryland.gov before assuming either timeline for a filing you're depending on.

Maryland doesn't require a publication step after formation, unlike a handful of other states that make you publish a notice in a local newspaper.

Draft an Operating Agreement

Maryland does not require LLCs to file an operating agreement with the state, but skipping one is a common mistake founders make when they're focused only on the required filings.

• Reinforces limited liability protection: a written operating agreement helps show the LLC is a separate legal entity from its owners, which matters if that liability shield is ever challenged.
• Overrides Maryland's default LLC rules: without one, state default statutes govern ownership splits, voting, and what happens if a member leaves, terms that may not match what the owners actually intended.
• Often expected by banks and investors: many banks ask for a copy before opening a business account, and outside investors typically want one in place before putting in capital.

Step 4: Get an EIN From the IRS

An Employer Identification Number identifies your LLC for federal tax purposes, and it's free directly from the IRS regardless of how you apply.

• Online application: available to founders with a Social Security Number or an Individual Taxpayer Identification Number, usually issued within minutes.
• Form SS-4 by phone, fax, or mail: the route for founders without an SSN or ITIN, since the online tool isn't available to them.

You'll need the EIN before you can open a US bank account or file most federal or state tax paperwork, so it's worth applying as soon as your Articles of Organization are approved.

Open a US Business Bank Account

With an approved Articles of Organization and an EIN in hand, the next practical step is separating business and personal finances in a dedicated business bank account.

• Keeps the liability shield intact: commingling personal and business funds is one of the fastest ways to undermine the liability protection an LLC is supposed to provide.
• Typically requires: the approved Articles of Organization, the EIN confirmation letter, and often a copy of the operating agreement.
• Foreign founders should expect extra steps: some banks require an in-person visit or additional identity verification for non-US resident owners, so it's worth confirming a specific bank's requirements before counting on remote account opening.

Step 5: File Form 5472 if the LLC Is Foreign-Owned

This is the step most Maryland LLC checklists leave out entirely, and it's the one with the steepest downside. Once foreign ownership crosses the 25% mark for a single-member LLC, the IRS puts you on the hook for an annual Form 5472 filing, and that obligation doesn't pause just because the LLC didn't earn anything that year.

• A pro forma Form 1120 rides along with it, a corporate return filed purely as a wrapper for the 5472, not because the LLC owes corporate income tax.
• Every reportable transaction gets disclosed, covering money that moved between the LLC and its foreign owner, from capital contributions to payments made for services rendered.
• The IRS doesn't scale the penalty to the mistake: miss the deadline or skip the form entirely, and the fine starts at $25,000, per form, per year, regardless of how much or how little the LLC actually made.

Letting the LLC sit dormant changes nothing here. From the moment it's formed, this filing sits on the calendar every year until the ownership structure changes, income or no income.

Step 6: Handle Maryland's Ongoing Compliance and Tax Obligations

Maryland's ongoing requirements are where the state diverges most from the typical LLC checklist, mainly because of the combined report filing and the county piggyback tax.

Registering for State Tax Accounts

Beyond the Annual Report, most Maryland LLCs also need to register directly with the Comptroller of Maryland for one or more state tax accounts, separate from the SDAT filings above.

• Sales and use tax: required if the LLC sells taxable goods or certain services in Maryland.
• Employer withholding tax: required once the LLC has employees on payroll.
• Local and industry licenses: some counties and industries layer on additional permit or license requirements on top of the state-level registrations.

Annual Report and Personal Property Return

Maryland combines these into a single filing with SDAT, due every year.

• Flat $300 fee, due regardless of whether the LLC owns any personal property to report.
• Due April 15 annually, moving to the next business day if the 15th falls on a weekend.
• Late penalties can run up to $500, and an unresolved filing can eventually lead to loss of good standing or forfeiture. The exact penalty formula isn't fully documented, so treat this deadline as firm rather than flexible.

State Income Tax and the County Piggyback Tax

Maryland's state income tax traditionally runs on a graduated scale from 2% to 5.75%. Recent changes reportedly add two new top brackets, 6.25% and 6.5%, for income over roughly $500,000 and $1 million, retroactive to January 1, 2025. This is a recent change and worth confirming with a tax professional before relying on it for planning.

On top of the state rate, every Maryland county and Baltimore City adds its own local "piggyback" income tax, typically somewhere in the 2.25% to 3.3% range. Combined effective rates land somewhere around 4.25% to 8.95% depending on your bracket and county. Few states stack a county-level income tax on top of the state rate this way, so it's worth checking your specific county's rate before you form.

Foreign Qualification if You're Expanding Into Maryland

If your LLC already exists in another state and you're registering to do business in Maryland too, you'll file a Foreign LLC Registration with SDAT.

• Requires a certificate of good standing from your home state, current as of your filing date.
• Fee is reported around $100, with an additional $50 for expedited processing, though this figure isn't fully cross-verified and is worth confirming with SDAT directly.

Maryland LLC Costs Breakdown

Maryland's costs fall into two buckets: a modest base filing fee with steep optional speed tiers on top, and a flat annual fee that applies no matter what the LLC owns. The filing rows below are the same ones listed in Step 3.

Two costs are easy to trigger by accident. Letting a name reservation lapse means filing the same $25 application again, and changing your resident agent or their address later means a Resolution filed with SDAT for $25.

How Long Does It Take to Form an LLC in Maryland?

Standard timing is the one piece Maryland does not make clear. There is conflicting information on whether a standard online filing through Maryland Business Express processes the same day or takes the state's typical 5 to 7 business days.

Check current processing status on egov.maryland.gov before you commit to either timeline for a filing you are depending on.

The paid tiers are more predictable. Walk-in or mail expedited processing adds $50 to the base fee, online rush processing adds $325 with a reported turnaround around 3 hours, and the same-day dropbox at the Baltimore SDAT office costs $425 with a reported turnaround around 2 hours.

Both of those hour figures come from reported or secondary sources, so confirm them with SDAT before paying for speed you are counting on.

After approval, the federal steps set the rest of the schedule. The EIN is free and usually issued within minutes for founders with an SSN or ITIN, while everyone else files Form SS-4 by phone, fax, or mail.

The bank account comes last and typically needs the approved Articles of Organization, the EIN confirmation letter, and often the operating agreement. Foreign founders sometimes face an in-person visit or extra identity verification.

Common Mistakes to Avoid

• Reserving a name too early: the 30-day hold is short, and a re-reservation costs another $25, so time it close to your actual filing date.
• Assuming a PO box works for the resident agent: Maryland expects a physical street address, not a mailbox.
• Skipping the Annual Report because there's no personal property: the $300 fee applies either way, and missing the April 15 deadline risks penalties and loss of good standing.
• Ignoring the county piggyback tax when estimating tax liability: the state rate alone understates what you'll actually owe once the local add-on is factored in.
• Assuming no revenue means no filing obligation: a 25%+ foreign-owned LLC still owes the IRS a Form 5472 every year it exists, income or not, and the penalty floor for getting this wrong sits at $25,000.

How FinStackk Helps With Starting Your Maryland LLC

FinStackk is an accounting and tax compliance platform for U.S. businesses, helping you go from incorporation to ongoing accounting, tax, and compliance, all in one place.

Fin-Start takes on the Maryland-specific parts of this process for you, from getting the resident agent and Articles of Organization filed correctly to securing your EIN, and it's built with cross-border details like ODI compliance in mind for founders forming a Maryland LLC from outside the US.

Once your LLC exists, Fin-Tax keeps the ongoing filings, including Form 5472 and Maryland's Annual Report, on a proactive deadline calendar instead of leaving you to track county tax rates and April deadlines yourself. Book a free demo to see both in action.

FAQ

Why does Maryland have a county income tax on top of the state tax?

Maryland is one of the few states where every county, plus Baltimore City, adds its own local "piggyback" income tax on top of the state rate. It typically falls somewhere in the 2.25% to 3.3% range depending on where you're registered. This stacking is a genuine outlier compared to most states, so factor your specific county's rate into any tax projection rather than relying on the state rate alone.

Do I have to pay Maryland's $300 Annual Report fee even if my LLC has no personal property?

Yes. The Combined Annual Report and Personal Property Return carries a flat $300 fee regardless of whether the LLC owns any reportable personal property. It's due every April 15, and missing it risks penalties reported up to $500 and, if left unresolved, potential loss of good standing.

Is Maryland a good state to form an LLC in if I'm not doing federal contracting or biotech work?

It can still work, but the advantages are narrower. Maryland's real draw is its proximity to DC for federal contracting, plus biotech and cybersecurity clusters tied to NIH, Fort Detrick, and Fort Meade. Without that angle, the flat $300 annual fee and stacked county tax make some other states a cheaper default, so weigh your actual business location and industry before choosing.

Can a non-US resident form an LLC in Maryland?

Yes, but two steps need planning. Maryland requires a resident agent who is either an individual Maryland resident at least 18 years old with a physical Maryland street address, or an active Maryland corporation or LLC in good standing that offers resident agent services, so a founder based abroad generally uses a commercial provider.

For the EIN, founders without an SSN or ITIN file Form SS-4 by phone, fax, or mail instead of using the online tool. Some banks then require an in-person visit or extra identity verification.

And if the single-member LLC is 25% or more foreign-owned, Form 5472 is due every year from formation, with a $25,000 minimum penalty.

Can a non-US resident start an LLC in Maryland?

Yes. Maryland sets no residency or citizenship requirement to own a Maryland LLC. You will still need a resident agent, which is Maryland's term for a registered agent, either an individual Maryland resident at least 18 with a physical Maryland street address or an active Maryland entity in good standing, so a founder based abroad generally uses a commercial provider. Because you won't have an SSN, you apply for your EIN on Form SS-4 by phone, fax, or mail instead of the online tool. If your LLC is single-member and 25% or more foreign-owned, you also file Form 5472 with the IRS every year, even at zero revenue, or risk a $25,000 minimum penalty.

What are the annual filing requirements for a single-member LLC in Maryland?

Every Maryland LLC, including a single-member one, files a Combined Annual Report and Personal Property Return with SDAT by April 15 each year, carrying a flat $300 fee even if the LLC owns no personal property to report. Missing the deadline risks a penalty reported up to $500 and, if left unresolved, loss of good standing or forfeiture. A single-member LLC that is 25% or more foreign-owned has an added federal obligation: Form 5472, filed yearly with the IRS.

Does a Maryland LLC pay income tax?

Yes, and in two layers. Maryland's state income tax runs on a graduated scale from 2% to 5.75%, with reported new top brackets of 6.25% and 6.5% on income over roughly $500,000 and $1 million, retroactive to January 1, 2025 and worth confirming with a tax professional. On top of that, every Maryland county and Baltimore City adds its own local piggyback income tax, typically in the 2.25% to 3.3% range, so your combined effective rate depends on which county you're registered in, not just your bracket. A standard LLC is a pass-through entity, so those profits are reported on the owners' personal returns.