How to Start a Limited Liability Company (LLC) in the United States

Starting a limited liability company can give a business a formal legal structure, separate its owners from many business obligations, and offer flexible federal tax treatment. The process is handled largely at the state level, so fees, forms, deadlines, and rules vary. In most cases, forming an LLC means choosing a state and name, appointing a registered agent, filing formation paperwork, creating an operating agreement, and addressing tax, licensing, and reporting requirements. Careful setup helps prevent avoidable delays and keeps the company in good standing.

What An LLC Is And What It Does

A limited liability company, or LLC, is a business entity created under state law. Its owners are called members. An LLC can have one member or multiple members, and members may be individuals or, depending on the applicable rules, other legal entities.

The LLC structure generally helps separate the company’s obligations from its owners’ personal assets. That protection is not absolute: a member may still be personally responsible for a personal guarantee, their own misconduct, certain unpaid taxes, or obligations arising when a court disregards the separation between the business and its owners. Keeping business and personal finances distinct and following required formalities can help preserve the separation.

For federal income tax purposes, the IRS usually treats a domestic single-member LLC as disregarded from its owner unless it elects corporate tax treatment. A domestic LLC with two or more members is generally treated as a partnership unless it elects to be taxed as a corporation. These are default tax classifications, not the LLC’s state-law form. An LLC does not automatically reduce taxes, and its members may owe income and self-employment taxes depending on the facts.

Steps To Start An LLC

Choose The State Where The LLC Will Be Formed

Many small businesses form an LLC in the state where they operate. Forming in another state does not necessarily avoid taxes or registration at home. If the company conducts business in a second state, it may have to register there as a foreign LLC, pay additional fees, and maintain registered agents in both states.

States differ in filing costs, annual or biennial reports, taxes, publication rules, and other requirements. Compare the rules in the state where the business will actually operate before considering an out-of-state formation. The Secretary of State or equivalent business-filing agency is usually the primary source for official forms, fees, and instructions.

Choose And Check The LLC Name

The proposed name typically must be distinguishable from names already on file in the state and include a required designator, such as “LLC” or “Limited Liability Company.” Some words, including terms associated with banking or regulated professions, may require approval or be restricted. Check the state’s business-name database and review the naming rules before filing.

A state’s approval of a business name does not automatically create trademark rights or establish that the name is safe to use nationally. Search the U.S. Patent and Trademark Office’s trademark database, check relevant web domains, and look for similar names used in the business’s market. If the company will use a name different from its legal LLC name, it may need to file an assumed name, trade name, or “doing business as” registration under state or local rules.

Select A Registered Agent

An LLC generally must name a registered agent in its formation state. The agent receives official notices, service of process, and other legal documents on the company’s behalf. The agent must meet state requirements, which commonly include having a physical street address in the state and being available during normal business hours.

A member can often serve as the registered agent if eligible, or the LLC can hire a commercial service. The choice involves trade-offs: using an owner may reduce costs, while a professional service can provide a consistent address and help protect privacy. The agent’s address may appear in public records, so applicants should understand the state’s disclosure rules.

File Articles Of Organization

The primary formation document is commonly called the articles of organization, although some states use a different name, such as a certificate of formation. It is filed with the state agency responsible for business entities. The form usually asks for the LLC’s name, principal address, registered agent, management structure, and sometimes its purpose or organizer.

Filing fees and processing times vary. Some states offer online filing, expedited processing, or same-day service for an additional fee. The LLC is generally formed when the state accepts the filing or on a later effective date allowed by state law. Save the accepted document and confirmation with the company’s records.

Before filing, determine whether the LLC will be member-managed or manager-managed. In a member-managed LLC, members generally handle business decisions. In a manager-managed LLC, designated managers handle day-to-day authority, while members retain rights established by state law and the operating agreement. The filing should accurately reflect the chosen structure where the state requests that information.

Create An Operating Agreement

An operating agreement is an internal document that explains how the LLC will be owned and run. A state may not require an LLC to file one, but an agreement can clarify the company’s rules and reduce uncertainty. Even a single-member LLC can benefit from documenting its ownership and decision-making arrangements.

An operating agreement commonly covers:

• Ownership: Members, their contributions, and their percentage interests or units.
• Management: Who can make decisions, sign contracts, and act for the LLC.
• Profits and losses: How allocations and distributions are determined, subject to applicable tax rules.
• Voting: Which decisions require approval and what level of consent is needed.
• Changes in membership: Procedures for transfers, departures, death, or adding a new member.
• Dissolution: Events that can end the company and how its affairs will be wound up.

Members should make sure the agreement is consistent with state law and the formation filing. For complex ownership, outside investment, or significant business risks, an attorney can help tailor the document.

Get An Employer Identification Number

An Employer Identification Number, or EIN, is a federal tax identification number issued by the IRS. An LLC generally needs an EIN if it has employees or meets other IRS requirements. A single-member LLC with no employees and no applicable excise-tax obligations may not always need one for federal tax purposes, but banks, vendors, or state agencies may request it.

Eligible applicants can request an EIN directly from the IRS, generally at no charge. The IRS warns business owners about third-party websites that charge for an application they can often complete themselves. The person applying must satisfy IRS requirements, including identifying a responsible party. Keep the EIN confirmation with the LLC’s records.

Handle Taxes, Licenses, And Business Setup

Review Federal, State, And Local Taxes

Tax obligations depend on the LLC’s activities, location, number of owners, and elections. By default, a single-member LLC’s business income is generally reported on the owner’s federal return, while a multi-member LLC generally files a partnership return and provides members with tax information. An LLC may be able to elect taxation as a C corporation or, if eligible, as an S corporation. Those elections have separate rules, deadlines, payroll implications, and administrative costs.

Members should not assume that an LLC’s tax treatment is the same as its legal liability structure. A tax professional can explain whether an election is appropriate and how it affects estimated taxes, payroll, deductions, and distributions. State and local taxes may include income, franchise, gross receipts, sales, use, or employment taxes.

If the LLC sells taxable goods or services, it may need a seller’s permit or sales tax registration. Employers generally have payroll tax, unemployment insurance, and workers’ compensation obligations, subject to state rules. Check requirements with the IRS, state tax department, and local government before beginning taxable activities or hiring staff.

Obtain Licenses And Permits

Forming an LLC does not authorize every type of business activity. Federal, state, county, and city governments may require licenses or permits based on the industry, location, and services offered. A home-based business may also face zoning, occupancy, or homeowners’ association restrictions.

Requirements can apply to contractors, food businesses, professional services, childcare providers, transportation companies, and many other industries. The U.S. Small Business Administration provides a general licensing overview, but official state and local agencies should be checked for current requirements. Regulated professions may require individual credentials in addition to business-level registrations.

Open A Business Bank Account And Set Up Records

A separate business bank account helps keep the LLC’s money distinct from the owner’s personal finances. Banks typically request formation documents, an EIN when applicable, and identification for owners or authorized signers. Requirements vary by institution, so confirm them before opening the account.

Use the LLC’s account for business income and expenses, and document member contributions, loans, reimbursements, and distributions. Keep invoices, contracts, tax records, meeting or written-consent records where appropriate, and copies of state filings. Accurate bookkeeping supports tax preparation and helps demonstrate that the LLC operates separately from its owners.

Understand Ongoing LLC Compliance

Formation is not a one-time task. Many states require annual or biennial reports, fees, franchise taxes, or other periodic filings. The due date may be tied to the anniversary of formation or set on a calendar schedule. Missing a deadline can lead to penalties, loss of good standing, or administrative dissolution.

Keep the registered agent and business address current, and report changes when state rules require it. The LLC should also renew licenses, file tax returns, pay applicable taxes, and maintain any required insurance. If the company expands into another state, determine whether that activity triggers foreign qualification before doing business there.

Federal beneficial ownership reporting rules have changed and may continue to change. As of the information reflected in current FinCEN guidance, U.S.-created entities and U.S. persons are exempt from Corporate Transparency Act beneficial ownership reporting under an interim final rule issued in 2026. Because reporting obligations are subject to legal and regulatory updates, check FinCEN’s official Beneficial Ownership Information page for the rules in effect when the LLC is formed or its details change.

Common LLC Formation Mistakes To Avoid

• Choosing a state based only on advertised benefits: A second-state formation can add foreign registration, agent, and filing costs without eliminating obligations in the company’s home state.
• Skipping the operating agreement: Without written rules, members may disagree about authority, distributions, or what happens when an owner leaves.
• Mixing personal and business funds: Poor separation makes bookkeeping harder and can weaken the practical distinction between the owner and LLC.
• Assuming the LLC name is trademark-protected: State name availability and federal trademark rights are separate issues.
• Overlooking local permits and taxes: State formation does not replace industry, municipal, sales tax, or employer registrations.
• Ignoring recurring deadlines: A company can lose good standing even if it remains active with customers.
• Expecting automatic tax savings or complete personal protection: Tax results and liability depend on the facts, conduct, elections, and applicable law.

LLC Formation Checklist

Official resources include the IRS overview of LLC tax classification, the U.S. Small Business Administration guide to business structures, and FinCEN’s Beneficial Ownership Information page. State agencies remain the authoritative source for formation procedures, fees, and recurring filing requirements.