Single-Member LLCs in Maryland: Formation, Taxes, and Liability Protection

Key Takeaways

• Maryland allows single-member LLCs, formed by filing Articles of Organization with the State Department of Assessments and Taxation (SDAT) for a $100 fee.

• The IRS treats a single-member LLC as a disregarded entity by default, so you report business income and expenses on Schedule C with your personal tax return.

• Every Maryland LLC must keep a Maryland principal office and a resident agent who lives in the state, or is a Maryland business entity, and consents to the role.

• Maryland LLCs file a Form 1 annual report with SDAT by April 15 and pay a $300 fee; filing late triggers a penalty (commonly $100, though it can be higher for businesses with taxable personal property) and can lead to forfeiture of the LLC.

• A Maryland member is not personally liable for company debts just by being a member, but courts can pierce that shield if you mix personal and business affairs.

If you are running a business on your own in Maryland, a single-member LLC is often the simplest way to separate your personal assets from your business risk. Maryland recognizes single-member LLCs. You create one by filing Articles of Organization with the State Department of Assessments and Taxation (SDAT) for a $100 fee. The structure gives a solo owner liability protection similar to a corporation while keeping the pass-through tax treatment of a sole proprietorship.

This guide from our Maryland business attorney walks through how to form a single-member LLC in Maryland, what it costs, how it is taxed, the annual report you cannot skip, and the steps that keep your liability shield intact.

What Is a Single-Member LLC in Maryland?

A single-member LLC is a limited liability company with one owner, called a member. Maryland treats the LLC as a separate legal entity from its owner, which is what creates the liability protection. A Maryland LLC can be formed for almost any lawful business purpose, with one statutory exception: it cannot be organized to act as an insurer. Some regulated or licensed activities also carry separate state requirements.

For federal taxes, the IRS does not treat a single-member LLC as a separate entity by default. Instead, it is a disregarded entity, which means the business income flows straight through to the owner.

Does Maryland Allow Single-Member LLCs?

Yes. Maryland allows a business to be owned by one person through a single-member LLC. You form one the same way you form any Maryland LLC, by filing Articles of Organization with SDAT. The state does not require a minimum number of members, so a single owner is enough.

How to Form a Single-Member LLC in Maryland

Forming a single-member LLC in Maryland takes a handful of steps:

Choose and Check Your Name

Pick a name that includes “LLC,” “L.L.C.,” or “Limited Liability Company,” then confirm it is available through SDAT’s business name search before you file.

Appoint a Resident Agent

Every Maryland LLC must have a Maryland principal office and a resident agent. The agent must be an individual who resides in Maryland, or a Maryland corporation, LLC, or limited partnership, and must consent to serve. You can be your own resident agent if you live in Maryland and have a physical street address there, not a P.O. box.

File the Articles of Organization

Submit your Articles of Organization to SDAT and pay the $100 filing fee. You can file online through Maryland Business Express or by mail; online card payments add a small processing fee.

Create an Operating Agreement

Maryland does not require one, but a single-member LLC still benefits from it. The agreement documents that the company is separate from you, sets out how it is managed and how you take money out, and helps preserve your liability protection.

Get an EIN and Set Up Tax Accounts

Apply for a free Employer Identification Number from the IRS if you need one, then open any required Maryland tax accounts and a business bank account.

Handle Licenses and Permits

Depending on your industry and location, you may need state or local business licenses before you begin operating.

How Is a Single-Member LLC Taxed in Maryland?

By default, the IRS treats a single-member LLC as a disregarded entity. You report the LLC’s income and expenses on Schedule C with your personal Form 1040, and the profit is subject to self-employment tax. Maryland follows this treatment, so you report the same income on your Maryland return and pay state and county income tax on it. Maryland does not impose a separate franchise tax on LLCs.

You can also elect to have your LLC taxed as an S corporation or C corporation by filing the right form with the IRS. Whether that election saves money depends on your numbers, and a Maryland tax attorney can model it for you before you commit.

If you expect to owe at least $1,000 in federal tax for the year, you generally need to make quarterly estimated payments. You can avoid an underpayment penalty by paying, through withholding and estimated payments, at least the smaller of 90% of your current-year tax or 100% of your prior-year tax (110% if your prior-year income was high). Maryland has its own estimated payment rules for residents who owe state tax.

The Maryland Annual Report You Cannot Skip

Every Maryland LLC must file the Annual Report (Form 1) by April 15. The same form includes a Business Personal Property Return, which you complete only if the LLC owns, leases, or uses personal property in Maryland or holds a trader’s license.

The deadline is April 15, the same as the federal tax deadline, and it applies to every LLC regardless of formation date, revenue, or whether the company owns any property. The filing fee is $300.

Maryland offers a 60-day extension to June 15 if you request it through SDAT on or before April 15. Filing late triggers a penalty (commonly $100, though it can be higher for businesses with taxable personal property), and continued non-filing can cause your LLC to lose good standing and eventually be forfeited by the state.

“A Maryland single-member LLC gives one owner liability protection and pass-through taxes, but the shield only holds if you keep the company separate from your personal finances.”

How to Protect Your Liability Shield

The main reason to form a single-member LLC is liability protection. Under Maryland law, a member is not personally liable for the company’s debts simply because they are a member, so creditors generally cannot reach your personal assets to satisfy the LLC’s obligations.

That protection is not automatic. A court can pierce the corporate veil and hold you personally responsible if you treat the LLC as an extension of yourself. You protect the shield by:

• Keeping a separate business bank account and not mixing personal and business funds.

• Signing contracts in the LLC’s name rather than your own.

• Maintaining an operating agreement and basic business records.

• Paying the LLC’s taxes and filing its annual report on time.

Fraud, ignoring formalities, or using the LLC to commit a wrong are the kinds of conduct that can expose a member personally. Maryland courts are among the most reluctant in the country to pierce the veil. They generally do so only to prevent fraud or enforce a paramount equity. Even so, keeping the company clearly separate from you is the safest course and helps prove the LLC is a genuine separate entity.

Frequently Asked Questions

What is the difference between a single-member LLC and a sole proprietorship?

Both have one owner and pass-through taxes, but a sole proprietorship is not a separate legal entity, so the owner is personally liable for every business debt. A single-member LLC is a separate entity under Maryland law, which shields the owner’s personal assets from most company obligations.

Does a single-member LLC need an EIN?

Not always. A single-member LLC treated as a disregarded entity with no employees and no excise tax liability can often use the owner’s Social Security number for federal taxes. You will need an EIN if the LLC has employees, files certain excise or employment tax returns, elects corporate taxation, or needs one to open a business bank account.

How do I pay myself from a single-member LLC?

You take an owner’s draw rather than a salary. You move money from the business account to your personal account as needed, and you pay income and self-employment tax on the business’s profit, not on the amount you withdraw. Leave enough in the business to cover expenses and taxes.

Can my spouse and I own a single-member LLC in Maryland?

Generally no. Maryland is not a community property state, so a husband-and-wife LLC cannot be treated as a single-member LLC for federal taxes. A Maryland LLC with two spouses as members is usually taxed as a multi-member LLC (a partnership) unless it elects corporate treatment.

Talk With a Maryland Business Attorney About Your Single-Member LLC

Setting up a single-member LLC the right way protects your personal assets and saves you from costly fixes later. Maryland, Virginia, and D.C. business and tax attorney Steve Thienel helps owners form LLCs, choose the right tax treatment, and stay compliant. Schedule a consultation to talk through your business and tax questions.