The core LLC formation documents are the articles of organization you file with your state, an internal operating agreement, and an EIN application with the IRS. Depending on your goals, you may add a tax classification election, and every state requires follow-up reports to keep the LLC alive once it exists. Getting any of these wrong, or missing a deadline, can cost you liability protection, favorable tax treatment, or the ability to open a business bank account.
Articles of Organization
The articles of organization are what actually create your LLC. Some states call the same document a Certificate of Formation or Certificate of Organization. You file it with the Secretary of State or equivalent agency, and once it’s accepted the LLC exists as a separate legal entity that can own property, enter contracts, and shield its owners from personal liability for business debts.
Every state’s form asks for the same core information:
- Business name. It must be distinguishable from other entities already on file and include a designator like “LLC,” “L.L.C.,” or “Limited Liability Company.”
- Registered agent. A person or company with a physical street address in the state who agrees to accept legal papers and government notices on the LLC’s behalf. Every state prohibits using a P.O. box, because courts and agencies need a reliable location for in-person delivery.
- Management structure. You pick either member-managed (all owners run the business) or manager-managed (designated managers handle day-to-day decisions while other members stay passive).
- Organizer information. The name and address of the person filing the paperwork, who may or may not become a member.
Some states also ask for a statement of business purpose. Most let you use a catch-all like “any lawful business activity.” A few require specific activities or a North American Industry Classification System code. Where your state allows it, keep the purpose broad so you don’t have to amend the articles every time your business pivots.
The Operating Agreement
The operating agreement is the internal rulebook that governs how the LLC actually runs. Unlike the articles, it stays in your company files rather than being filed with the state. That makes it easy to overlook, and plenty of new business owners skip it entirely. That’s a mistake. Without one, your LLC defaults to whatever your state’s LLC statute says about profit splits, voting rights, and what happens when a member leaves, and those defaults rarely match what the owners intended.
A solid operating agreement covers the ground that matters when things get complicated:
- Profit and loss allocation. LLCs can split profits in proportions that differ from ownership percentages, which is one of their biggest advantages over S corporations. The operating agreement is where you lock that arrangement in.
- Voting and decision-making. Spell out whether votes follow ownership percentages or some other formula, and which decisions need unanimous consent versus a simple majority.
- Capital contributions. How much each member puts in at the start, whether additional contributions can be required later, and what happens if someone doesn’t pay up.
- Buy-sell provisions. These trigger when a member dies, becomes permanently disabled, goes through a divorce, retires, or files for bankruptcy. Without buy-sell terms, remaining members can end up in business with a deceased member’s heirs or an ex-spouse. Spell out how the departing member’s interest is valued and whether the LLC or the other members get to buy it.
- Dissolution terms. The conditions under which the LLC winds down and how assets get distributed when it does.
Every member should sign the agreement, and each should keep a copy. Even single-member LLCs benefit from having one. Courts sometimes look at whether a single-member LLC maintained proper formalities when deciding whether to “pierce the veil” and hold the owner personally liable.
Employer Identification Number
Your LLC needs an EIN from the IRS before it can open a business bank account, hire employees, or file federal tax returns. The EIN works like a Social Security number for the business. Multi-member LLCs and any LLC that will have employees are required to get one. Single-member LLCs with no employees can technically use the owner’s Social Security number, but most banks and vendors expect an EIN, so there’s little reason to skip it.1Internal Revenue Service. Employer Identification Number
The fastest route is the IRS online application at IRS.gov/EIN, which issues the number immediately at the end of the session. The person applying must have a valid Social Security number or Individual Taxpayer Identification Number. You can also apply by faxing or mailing Form SS-4, but those methods take days or weeks. The application asks for the LLC’s legal name, physical address, the name and taxpayer ID of a “responsible party” who controls the entity, and the reason you’re applying.2Internal Revenue Service. Instructions for Form SS-4
Choosing a Federal Tax Classification
How the IRS will tax your LLC is an overlooked formation-stage decision. The default depends on how many members you have. A single-member LLC is treated as a “disregarded entity,” meaning the IRS ignores it and you report business income on your personal Schedule C. A multi-member LLC is taxed as a partnership.3Internal Revenue Service. Single Member Limited Liability Companies Those defaults work for many businesses, but you have two alternatives.
C-Corporation Election (Form 8832)
Filing IRS Form 8832 lets your LLC elect to be taxed as a C corporation. The LLC becomes a separate taxpaying entity that pays corporate income tax on its profits, and owners then pay tax again on any dividends they receive. That double taxation sounds unappealing, but it can make sense for LLCs planning to reinvest most profits or seeking venture capital investment. The election must be filed within 75 days before or 12 months after the date you want it to take effect.3Internal Revenue Service. Single Member Limited Liability Companies
S-Corporation Election (Form 2553)
Filing Form 2553 elects S-corporation tax treatment, which lets the LLC avoid self-employment tax on a portion of its income. The LLC pays its owner-employees a reasonable salary subject to payroll taxes, and remaining profit passes through as a distribution not subject to Social Security and Medicare taxes. For profitable LLCs whose owners actively work in the business, the payroll tax savings can be significant.
Eligibility is strict: no more than 100 shareholders, all shareholders must be U.S. residents, and the LLC can only have one class of ownership interest. Form 2553 must be filed no later than two months and 15 days after the beginning of the tax year in which you want the election to take effect.4Internal Revenue Service. Instructions for Form 2553
Missing the Form 2553 deadline is one of the most common formation mistakes. If you know you want S-corp treatment, file the election while you’re handling your other formation documents. Waiting until tax season usually means waiting an extra year.
Filing Fees and Publication
Once your articles of organization are complete, you submit them to your state’s business filing office. Most states offer online portals that process filings within a few business days, sometimes within hours. Mail-in and in-person options remain available but take longer. When the state approves your filing, you receive a stamped copy or a formal certificate confirming the LLC exists.
State filing fees for articles of organization range from $40 to $500. Expedited processing, name reservations, and certified copies carry their own fees in some states. Check your Secretary of State’s website for exact amounts before filing, since these change regularly.
A small number of states also require newly formed LLCs to publish a notice of formation in local newspapers. Arizona requires publication for three consecutive issues; Nebraska requires three consecutive weeks. New York requires publication in two newspapers (one daily, one weekly) for six consecutive weeks, followed by filing a Certificate of Publication with a $50 fee. Newspaper charges can run from a few hundred dollars in rural areas to over a thousand in New York City. If your state has a publication requirement and you skip it, the LLC may lose its authority to do business until you comply.
Initial and Ongoing State Reports
Formation doesn’t end when the state accepts your articles. Many states require a first report shortly after formation, often called an Initial Statement of Information or Initial Report, with a deadline that generally falls within 30 to 90 days after formation. The report asks for current details about the LLC’s managers or managing members, its principal office address, and its registered agent. The filing fee is modest in most states, but missing the deadline triggers late penalties.
After the initial report, most states require ongoing periodic filings to keep the LLC’s information current. The majority collect these reports annually. A handful follow a biennial cycle, and Pennsylvania only requires a report every ten years. Annual report fees range from $0 in a few states to several hundred dollars, with most falling under $100. These reports typically ask for the same basic information as the initial report.
A few states impose annual franchise or minimum taxes on top of the report filing fee. California, for example, charges an $800 annual franchise tax regardless of whether the LLC earned any income. These recurring costs catch many new LLC owners off guard because they aren’t part of the formation process itself but start accruing almost immediately.
Ignoring these requirements triggers a predictable sequence: late fees, then a notice and grace period, then administrative dissolution or suspension. An LLC in that status cannot file lawsuits, enforce contracts, or maintain its liability shield. People who continue operating a dissolved LLC risk personal liability for debts incurred during the period of dissolution. Reinstatement is possible but requires curing every deficiency, paying all back fees and penalties, and filing within a limited window that varies by state.
Registering in Other States
If your LLC does business in a state other than where it was formed, that state will likely require you to register as a “foreign LLC” by filing an application for a certificate of authority. What counts as “doing business” varies, but having employees, a physical office, or regular in-person client meetings in another state usually qualifies. The process generally requires a name availability search in the new state, appointment of a registered agent there, and sometimes a certificate of good standing from your home state. Filing fees and annual reports apply in each state where you register.
Beneficial Ownership Reporting
The Corporate Transparency Act originally required most LLCs to report their beneficial owners to the Financial Crimes Enforcement Network. An interim final rule published in March 2025 exempted all entities created in the United States from this requirement. As of early 2026, only foreign entities registered to do business in the U.S. must file beneficial ownership reports with FinCEN. Domestic LLC owners do not need to file. FinCEN has indicated it may propose a revised rule in the future, so this is worth monitoring if you’re forming an LLC now.5Financial Crimes Enforcement Network. Beneficial Ownership Information Reporting