What Is an LLC? The Limited Liability Company, Explained
An LLC (limited liability company) is a business structure allowed by state statute that shields its owners' personal assets from business debts and, by default, is taxed as a pass-through - the owners report profit on their own returns rather than paying a separate entity tax. Owners are called members. A single-member LLC is a disregarded entity by default; a multi-member LLC is taxed as a partnership; and either can elect corporate treatment on IRS Form 8832.
Quick Answer
- What it is
- A business structure allowed by state statute that limits owners' personal liability
- Owners called
- Members (individuals, corporations, other LLCs, or foreign entities)
- Liability
- Members' personal assets are generally protected from business debts
- Default tax (1 owner)
- Disregarded entity - reported on the owner's Form 1040, Schedule C
- Default tax (2+ owners)
- Partnership - files Form 1065, issues Schedule K-1
- Optional tax elections
- Corporation via Form 8832, or S corporation via Form 2553
- Formed by
- Filing articles of organization with the state (fee varies by state)
What an LLC Is (Plain English)
A limited liability company (LLC) is a legal business entity you create by registering with a U.S. state. The Internal Revenue Service defines it directly: "A Limited Liability Company (LLC) is a business structure allowed by state statute." It is not created by federal law - each state has its own LLC act that authorizes the entity and sets the rules, so, as the IRS cautions, requirements "vary from state to state."
The LLC blends two older forms. The Cornell Legal Information Institute describes it as "a non-incorporated business organization that retains elements of both partnerships and corporations." From the corporation it borrows the limited liability shield: "the investors in an LLC have limited personal liability in the business." From the partnership and sole proprietorship it borrows pass-through taxation - an LLC "can receive pass-through taxation like partnerships or may choose corporate taxation." That combination is why the LLC is the default choice for most new U.S. small businesses.
Owners of an LLC are called members, not shareholders or partners. Per the IRS LLC page, "Most states do not restrict ownership, so members may include individuals, corporations, other LLCs and foreign entities. There is no maximum number of members," and "Most states also permit 'single-member' LLCs, those having only one owner." An LLC therefore scales from a one-person side business to a large multi-owner company under the same basic form.
Why the LLC Exists (Legal Basis)
The LLC exists to give small-business owners liability protection without the formality and double taxation of a corporation. Before LLC statutes, an owner had to choose between a sole proprietorship or partnership (simple and pass-through, but with unlimited personal liability) and a corporation (limited liability, but with corporate-level tax and rigid formalities). The LLC, now authorized in every state, closes that gap.
Because the entity is "allowed by state statute," an LLC is a creature of state law. You form one by filing a formation document - usually called articles of organization (some states say certificate of formation or certificate of organization) - with the state business filing office. The U.S. Small Business Administration notes that if your business is an LLC, "you'll need a registered agent in your state before you file," and that "ownership rules, liability, taxes, and filing requirements for each business structure can vary by state." The federal government's only role is tax classification, covered below.
The liability shield is the core statutory benefit. It is not absolute: it depends on the LLC being operated as a genuine, separate entity. Courts can set the shield aside - "piercing the corporate veil" - which we explain in the liability section.
Members and Managers: How an LLC Is Run
An LLC is owned by its members and can be run in one of two ways: member-managed or manager-managed. In a member-managed LLC, the owners run day-to-day operations themselves - the default in most states for a small LLC. In a manager-managed LLC, the members appoint one or more managers (who may or may not be members) to run the business, a structure suited to owners who want to invest passively.
The members typically record how the company is governed in an LLC operating agreement - an internal contract that sets ownership percentages, how profits are split, voting rights, and management duties. Most states do not require one to be filed, but it controls the relationship among members; without it, the state's default LLC rules apply. Membership is flexible: the IRS confirms there is "no maximum number of members," and members can be people or other companies.
An LLC needs a registered agent - a person or company with a physical address in the formation state that "receives official papers and legal documents on behalf of your company," per the SBA. See what a registered agent does for the full role.
How an LLC Is Taxed (Default Pass-Through)
An LLC has no tax category of its own - the IRS taxes it under one of the existing regimes, and the default depends on how many members it has. This flexibility is called "check-the-box" classification.
- One member (default): The IRS states "an LLC with only one member is treated as an entity disregarded as separate from its owner, unless it files Form 8832 and elects to be treated as a corporation." A disregarded single-member LLC reports business profit or loss on the owner's Schedule C (Form 1040). See our single-member LLC guide.
- Two or more members (default): "A domestic LLC with at least two members is classified as a partnership for federal income tax purposes unless it files Form 8832 and affirmatively elects to be treated as a corporation." A partnership "does not pay income tax"; it files Form 1065 and passes profit through to members on Schedule K-1.
- Corporate election (optional): Any LLC may file Form 8832, Entity Classification Election, to be taxed as a C corporation, or Form 2553 to be taxed as an S corporation.
Because default LLC profit is pass-through, active members generally owe self-employment tax on their share. The IRS sets that rate at 15.3% - "12.4% for social security" plus "2.9% for Medicare" - and requires a return once "net earnings from self-employment … were $400 or more." The Social Security portion applies up to an annually adjusted wage base ($168,600 for 2024, per the IRS). Electing S corporation status is the common tool owners use to reduce that self-employment-tax exposure once profits are high enough; see S corp vs LLC.
The Limited Liability Shield (and Piercing the Veil)
The limited liability shield is the LLC's defining feature: as a separate legal entity, the LLC - not its members - owes the business's debts. The SBA puts it plainly: "LLCs protect you from personal liability in most instances, your personal assets - like your vehicle, house, and savings accounts - won't be at risk" if the business is sued or cannot pay a debt. A member generally risks only what they invested in the company.
The shield is strong but not unconditional. A court can "pierce the corporate veil" - set aside limited liability and hold members "personally liable for the corporation's actions or debts," per Cornell - when owners abuse the entity. Cornell notes courts have "a strong presumption against piercing" and act only on serious misconduct, such as "intermingling of personal and corporate assets," undercapitalizing the company at formation, or creating it "to escape liability" through fraud. The practical lesson: keep the LLC's money, records, and contracts separate from your personal affairs, so the entity is respected as genuinely separate.
This page is general information, not legal advice. Whether the shield protects you in a specific dispute depends on your facts and your state's law; use the primary sources here to confirm your situation, and consult a licensed professional for advice.
LLC vs. Sole Proprietorship vs. Corporation
An LLC sits between the sole proprietorship (simplest, no liability shield) and the corporation (strongest formality, potential double taxation). The table compares the three on the axes that matter most, using the SBA's structure guidance and IRS tax classifications.
| Feature | Sole proprietorship | LLC | Corporation (C corp) |
|---|---|---|---|
| Personal liability | Unlimited - owner "held personally liable" | Limited - protected "in most instances" | Limited - owners not personally liable |
| State filing to form | None (if using legal name) | Articles of organization | Articles of incorporation |
| Owners called | Owner (1) | Members (1 or more) | Shareholders |
| Default federal tax | Pass-through (Schedule C) | Pass-through (disregarded / partnership) | Corporate tax - profits "taxed twice" |
| Self-employment tax | Yes, 15.3% on net earnings | Yes by default; reducible via S election | No SE tax; wages instead |
| Can elect S corp? | No (must convert) | Yes (Form 2553) | Yes (Form 2553) |
| Recordkeeping | Minimal | Moderate | Extensive (bylaws, minutes) |
The corporation's "profits are taxed twice - first, when the company makes a profit, and again when dividends are paid to shareholders," per the SBA, which is the double taxation an LLC avoids by default. For deeper comparisons see sole proprietorship vs LLC and LLC vs corporation.
Who Should Consider an LLC
An LLC suits an owner who wants a liability shield without corporate complexity. You do not need employees or partners: most states permit single-member LLCs, and many solo owners form one purely to separate business and personal assets, open a business bank account, or set up a later S corporation election. Common candidates include freelancers with liability exposure, real estate investors holding property, small partnerships that want protection, and startups that expect outside owners.
An LLC is not always the answer. A very low-risk hobby business may not need one; a company planning to raise venture capital or issue stock options often prefers a C corporation, because investors expect shares, not membership interests. An S corporation election can also change the math once profits are high - the IRS limits an S corp to "no more than 100 shareholders" who must be individuals, certain trusts, and estates. The right structure is a facts-and-numbers decision; the general information here is a starting point, not advice for your situation.
How You Form an LLC (In Brief)
Forming an LLC is a state filing, not a federal one. The general sequence: choose a compliant business name, appoint a registered agent in the state, file articles of organization with the state and pay the filing fee, adopt an operating agreement, and get an EIN from the IRS if the LLC needs one (for employees, excise taxes, a bank account, or a corporate/partnership tax election). Filing fees are set by each state and vary widely, so we cover them in how much an LLC costs. Full steps are in how to form an LLC.
Related Terms
- How to form an LLC (step-by-step)
- How much does an LLC cost?
- Single-member LLC - one-owner LLC taxation
- LLC vs corporation
- Sole proprietorship vs LLC
- S corp vs LLC
- What is a registered agent?
- Articles of organization · Operating agreement · EIN (glossary)
Frequently Asked Questions
What does LLC stand for?
LLC stands for limited liability company. The IRS describes it as a business structure allowed by state statute that combines a corporation's limited liability with pass-through taxation by default.
How is an LLC taxed?
By default, a single-member LLC is a disregarded entity taxed on the owner's return, and a multi-member LLC is taxed as a partnership. An LLC can instead elect corporate tax on Form 8832 or S corporation tax on Form 2553.
Does an LLC protect my personal assets?
Generally yes. The SBA says LLCs protect you from personal liability in most instances, so your home, car, and savings are not at risk for business debts. Courts can pierce the veil if you commingle funds or commit fraud.
Is an LLC the same as a corporation?
No. An LLC is unincorporated, owned by members, and formed under a state LLC statute. A corporation is incorporated and issues stock. An LLC can elect corporate tax treatment but stays an LLC in state law.
Do I need employees to form an LLC?
No. Most states permit single-member LLCs with no employees. Many owners form one for the liability shield, a business bank account, or a later S corporation election.
Can one person own an LLC?
Yes. The IRS notes most states permit single-member LLCs. A one-owner LLC is a disregarded entity by default, reported on Schedule C of Form 1040.
Sources
- IRS - Limited Liability Company (LLC) (definition, members, default classification, Form 8832, employment/excise tax as separate entity).
- IRS - Single Member Limited Liability Companies (disregarded entity default, Schedule C reporting).
- IRS - Partnerships (no entity income tax, pass-through, Form 1065, Schedule K-1).
- IRS - S Corporations (pass-through election, Form 2553, Form 1120-S, 100-shareholder limit).
- IRS - About Form 8832, Entity Classification Election.
- IRS - About Form 2553, Election by a Small Business Corporation.
- IRS - About Schedule C (Form 1040), Profit or Loss From Business.
- IRS - Self-Employment Tax (15.3% total; 12.4% Social Security + 2.9% Medicare; $400 threshold).
- IRS - Employer Identification Number (when an LLC needs an EIN).
- Cornell Legal Information Institute - Limited Liability Company (LLC) (limited liability, pass-through, non-incorporated form).
- Cornell Legal Information Institute - Piercing the Corporate Veil (when courts set aside limited liability).
- U.S. SBA - Choose a Business Structure (liability, pass-through, double taxation, self-employment tax).
- U.S. SBA - Register Your Business (articles of organization, registered agent, state variation).
LegalGlass provides general information for educational purposes and is not a law firm or a substitute for advice from a licensed attorney or tax professional. This page is information, not advice. Laws, forms, fees, and processing times change and vary by state; verify current requirements with your state's business filing office and the IRS before acting.