What Is an LLC? How a Limited Liability Company Works

What Is an LLC?

An LLC is a legal business structure that pairs protection for owners’ personal assets with flexible taxation. The US Small Business Administration (SBA) describes it as a structure that offers the limited liability of a corporation with the tax efficiency and operating flexibility of a partnership.¹

These companies are created under state law, not federal law. Each state has its own rules, forms and fees. Once formed, the company becomes a separate legal entity. It can own property, sign contracts, open bank accounts and sue or be sued in its own name.

The owners are called members. There is no limit on the number of members in most states, and members can be individuals, other companies or, in many cases, foreign owners. A business with one owner is a single-member LLC, and one with several is a multi-member LLC.²

The structure is popular with small businesses, freelancers, consultants, property investors and online sellers. They are often chosen because they are simpler to run than a corporation while giving more protection than operating on your own.

How Limited Liability Works

Limited liability means the business, not the owners personally, is usually responsible for the business’s debts and legal claims. That is the main reason people form an LLC.

Without an LLC or corporation, a sole proprietor and the business are legally the same. If the business cannot pay a supplier or loses a lawsuit, creditors may be able to go after the owner’s personal savings, car or home. The SBA points out that sole proprietors may be personally responsible for what the business owes.¹

With limited liability, members’ personal assets are generally shielded. A member usually risks only what they have put into the business. If the company fails, its creditors normally cannot claim members’ personal property.

Where the Protection Stops

The protection is strong but not unlimited. Members can still be personally liable in several situations:

• Personal guarantees: if you personally guarantee a loan or lease, you are on the hook for it.
• Your own wrongdoing: you remain responsible for your own negligence, fraud or illegal acts.
• Unpaid payroll taxes: people responsible for withholding and paying payroll taxes can be held personally liable.
• Mixing money: if you treat company and personal money as one, a court may “pierce the veil” and ignore the separation.

Insurance fills many of these gaps. General liability and professional liability policies protect the business itself. Limited liability and good insurance usually work together.

How an LLC Is Taxed

An LLC is not its own tax category for the IRS, so it is taxed according to its number of members and any election it makes.²

The default setups are called pass-through taxation. The company itself usually pays no federal income tax. Instead, profit “passes through” to the members, who pay tax at their own rates. Our explainer on how income tax brackets work explains how personal rates are applied.

Members who work in the business generally also pay self-employment tax on their share of profit. This covers Social Security and Medicare, which an employer would otherwise share. Some owners elect S corporation status to manage this, but it adds payroll and paperwork. A tax professional can tell you whether it makes sense for your numbers.

The company changes its tax treatment by filing IRS forms: Form 8832 to be taxed as a corporation, or Form 2553 to elect S corporation status.² States can have their own taxes and fees on top of federal tax.

LLC vs Other Business Structures

The right structure depends on your risk, your tax situation and your plans for growth.

Startups planning to raise money from venture capital investors often choose a C corporation, because investors usually prefer to buy shares of stock. A company can convert later, but it is simpler to choose the likely long-term structure early. The SBA’s guide compares each structure in more detail.¹

Pros and Cons of an LLC

This structure suits many small businesses, but it is not free or effortless.

Advantages

• Personal asset protection from most business debts and claims.
• Flexible taxation, with pass-through by default and the option to be taxed as a corporation.
• Less formality than a corporation, with no board or shareholder meetings required in most states.
• Flexible ownership, including the ability to split profits in ways members agree.
• Credibility with customers, suppliers and banks, who may prefer dealing with a registered company.

Disadvantages

• State fees, both to form the LLC and, in many states, every year after. California, for example, charges these companies a minimum annual tax of $800.
• Self-employment tax on profits for members under default tax rules.
• More paperwork than a sole proprietorship, including annual reports in many states.
• Harder to raise equity investment than a C corporation.
• Rules vary by state, so moving or operating in several states can add filings.

How to Form an LLC: Step by Step

Forming an LLC is usually a few hours of online work and a filing fee paid to your state.

1. Choose a state. Most small businesses form in the state where they operate. Forming elsewhere often means registering in your home state too, so it rarely saves money.
2. Pick a name. It must be unique in your state and usually include “LLC” or “Limited Liability Company.” Check the state’s business name database.
3. Name a registered agent. This person or firm receives official legal papers for the business at an address in the state. You can often act as your own.
4. File articles of organization. Some states call this a certificate of formation. You file it with the secretary of state or similar office and pay a fee, which varies widely by state.
5. Write an operating agreement. This sets out ownership shares, how decisions are made and what happens if a member leaves. Some states require it, and it is wise even when they do not.
6. Get an EIN. An employer identification number from the IRS is free and is needed to hire staff or open many business bank accounts.³
7. Open a business bank account. Keep every business dollar in it, separate from personal money.
8. Get licenses and permits. Check city, county and state requirements for your type of business.

Keeping Your LLC in Good Standing

An LLC needs some ongoing care to keep its protection and stay legally active.

• File annual or biennial reports and pay any state fees on time. Missing them can lead the state to dissolve the company.
• Keep your registered agent current, so you never miss legal papers.
• Separate finances completely. Pay business costs from the business account, and pay yourself through clear owner draws or salary.
• Sign contracts in the LLC’s name, such as “Bright Path Design LLC, by Jane Doe, Member.”
• Keep records of major decisions, member changes and agreements.
• Stay on top of taxes, including estimated tax payments where required.

Good bookkeeping also helps you run the business. Our explainers on cash flow and profit margin show which numbers to watch.

What Happened to Beneficial Ownership Reporting?

The Corporate Transparency Act created a requirement to report owners to FinCEN, the Treasury’s financial crimes office. In March 2025, FinCEN issued a rule that exempts companies created in the United States, and their US owners, from this reporting. Under that rule, the requirement now applies mainly to foreign companies registered to do business in the US.⁴ Check FinCEN’s site for the latest position, as rules can change.

Is an LLC Right for You?

A few simple questions can help you decide whether forming a company is worth it now or later.

• Could a customer, client or supplier sue you? Businesses that work in people’s homes, give advice or sign large contracts face more risk.
• Do you have personal assets to protect? Savings, a home or investments raise the value of limited liability.
• Is the business earning steady profit? A side project earning very little may not justify yearly state fees yet.
• Do you have partners? A multi-member company with a written operating agreement is far safer than an informal partnership.
• Do you plan to raise investment? If so, ask whether a corporation would suit investors better.

Talking to an accountant or a small business adviser before you file can save money and mistakes. Many local Small Business Development Centers offer free or low-cost advice to new owners.

There is no penalty for starting as a sole proprietor and forming a company later. Many owners make the switch once the business is clearly working. Our explainer on business models can help you test whether the idea is ready to grow.

A Worked Example

Here is a made-up example of a freelancer deciding to form an LLC.

Priya is a freelance web designer earning about $90,000 a year in profit. She works as a sole proprietor. A client asks her to sign a contract with a large liability clause, and she realizes a dispute could put her savings at risk.

She forms a single-member company in her home state, paying the state filing fee. She gets a free EIN, opens a business bank account and buys professional liability insurance. Her clients now sign contracts with the business, not with her personally.

For taxes, nothing changes at first. Her company is a disregarded entity, so she still reports profit on her personal return and pays self-employment tax. After a year, she asks an accountant whether electing S corporation status would save tax at her income level, weighing the savings against the cost of running payroll.

Common LLC Mistakes

Most LLC problems come from treating the company as a formality rather than a separate business.

• Mixing personal and business money, which weakens liability protection.
• Skipping the operating agreement, leaving disputes between members with no agreed rules.
• Missing annual reports and fees, which can lead to penalties or dissolution.
• Forming in another state to save money, then paying fees in two states.
• Assuming an LLC lowers taxes on its own. By default, it is taxed much like a sole proprietorship or partnership.
• Relying on the structure instead of insurance for protection against claims.

Key Terms Explained

• Member: an owner of an LLC.
• Articles of organization: the document filed with the state to create an LLC.
• Operating agreement: the internal contract that sets out how the LLC is owned and run.
• Registered agent: the person or company that receives official legal papers for the LLC.
• Pass-through taxation: when business profit is taxed on the owners’ personal returns, not at the company level.
• EIN: employer identification number, a federal tax ID for a business.

The Bottom Line

An LLC separates your business from your personal finances and gives you flexible tax options, at the cost of some fees and paperwork. It suits many small businesses and freelancers. Form it in the state where you operate, write an operating agreement, keep money strictly separate and add insurance for the risks an LLC cannot cover. For more, browse our business explainers, including our guide to writing a business plan.

Still deciding whether you need one? Our comparison of LLC vs sole proprietorship weighs cost, risk and taxes side by side.

This article is general information, not legal or tax advice. Rules vary by state and change over time, so check with your state’s business office or a qualified professional before deciding.

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