Which States Require an LLC Operating Agreement (2026)

Five states legally require every LLC to have an operating agreement: California, Delaware, Maine, Missouri, and New York. Everywhere else in the United States it is optional but strongly recommended. New York is the strictest of the five because it demands a written agreement, while California, Delaware, Maine, and Missouri accept oral, written, or in some cases implied agreements. No state asks you to file the document with the government. You keep it in your own records. That is the short answer. The rest of this guide explains what that means in practice, why you almost certainly want one even if your state does not force it, and how to create one that actually holds up.

What an operating agreement is

An operating agreement is the internal rulebook for your LLC. It sets out who owns the company, how profits are split, who can make decisions, what happens if a member leaves or dies, and how the business winds down if you close it. Think of it as the constitution for your company. Your articles of organization register the LLC with the state. The operating agreement governs how the LLC runs day to day.

For a single member LLC the agreement mostly documents that you own everything and that the business is a separate legal entity from you personally. For a multi member LLC it becomes far more important, because it is the document that settles disputes between owners before they turn into lawsuits.

The five states that require one

Here is the state by state picture for the mandatory five.

California. Required for every LLC. The agreement can be oral or written, but relying on an oral agreement is a bad idea because you cannot prove its terms later. California expects members to enter into an operating agreement, so put it in writing and keep a signed copy.

New York. Required and must be written. New York goes further than any other state. LLC members must adopt a written operating agreement, and they are supposed to do it within ninety days of filing the articles of organization. The agreement should cover the business affairs of the LLC and the rights, powers, and duties of its members.

Delaware. Required. Delaware law recognises an agreement that is oral, written, or implied by conduct. Because Delaware is the most popular state for forming companies that raise investment, a clear written agreement is standard practice there even though the statute is flexible.

Maine. Required. Maine also accepts oral, written, or implied agreements. As with the others, written is the only sensible choice.

Missouri. Required. Missouri accepts oral, written, or implied agreements too, and again a written record is what protects you.

Notice the pattern. Even in the states that technically accept an oral agreement, an oral agreement gives you nothing to point to when a bank, a court, or a business partner asks what the rules are. Written is the practical standard in all five.

What about the other forty five states

If you form your LLC anywhere outside those five, no law requires an operating agreement. You can register your company and start trading without one. That does not make it a good idea. Most formation experts, banks, and accountants recommend that every LLC have a written operating agreement regardless of state, and the reasons below explain why.

Why you want one even when it is optional

It protects your limited liability. The whole point of an LLC is to separate your personal assets from your business debts. If someone sues your company and you have no operating agreement, no separate bank account, and no formal records, a court can decide the LLC is just you under another name and pierce the corporate veil. An operating agreement is a core piece of evidence that your LLC is a real, separate entity.

Banks ask for it. When you open a business bank account, most banks want to see your operating agreement alongside your articles of organization. Lenders and investors want it too, because your state filing proves the company exists but does not prove who owns it or controls it. The operating agreement is your proof of ownership.

It overrides the default state rules. If you have no agreement, your LLC is governed entirely by your state default LLC statute. Those defaults may split profits in ways you never intended, or hand decision rights to people you did not mean to empower. A written agreement lets you set your own terms instead of inheriting the state template.

It prevents partner disputes. For a multi member LLC this is the big one. The agreement decides in advance what happens when one owner wants out, when a member stops contributing, or when the owners disagree on a major decision. Settling those questions on paper before there is money on the table is far cheaper than settling them in court afterwards.

How to create an operating agreement, step by step

Follow these steps whether your state requires the document or not.

Step 1. Confirm your members and ownership split. List every member and the percentage of the company each one owns. For a single member LLC this is simply you at one hundred percent. For a multi member LLC the percentages usually track the capital each person put in, but you can agree on any split you like.

Step 2. Decide how the LLC is managed. Choose member managed, where the owners run the business directly, or manager managed, where you appoint one or more managers to run it. Most small LLCs are member managed.

Step 3. Set out capital contributions. Record what each member contributed to start the company, whether that is cash, equipment, or property, and note whether members are expected to contribute more later.

Step 4. Define profit and loss distribution. State how and when profits are paid out. This often matches ownership percentages, but it does not have to.

Step 5. Write the voting and decision rules. Say which decisions need a simple majority, which need unanimous agreement, and how voting power is weighted. Everyday decisions and major decisions such as taking on debt or selling the business are usually treated differently.

Step 6. Add transfer and exit provisions. Cover what happens when a member wants to sell their stake, dies, becomes incapacitated, or is bought out. Include a buyout method so the remaining members are not stuck with an unwanted new partner.

Step 7. Include dissolution terms. Explain how the LLC will be wound down and how remaining assets get distributed if you close the company.

Step 8. Sign and store it. Every member signs and dates the agreement. You do not file it with the state. You keep signed copies in your company records and give one to your bank when asked. Review it whenever ownership or management changes.

Worked example

Maria forms a single member LLC in New York to run her freelance design studio. New York requires a written operating agreement within ninety days of filing, so this is not optional for her.

Her agreement records that Maria owns one hundred percent of the company, that it is member managed, and that she contributed five thousand dollars of startup capital plus her existing design equipment. It states that all profits flow to her, that she alone holds decision authority, and that if she becomes unable to run the business her named successor can step in. It sets out how the LLC would be dissolved if she ever closes it.

Two months later Maria opens a business bank account. The bank asks for her articles of organization and her operating agreement. Because she already has a signed written agreement, the account is approved the same day. If she had skipped the document, she would have failed New York law and stalled at the bank. A ten page document she wrote once removed both problems.

Now compare that with Tom, who forms a two member consulting LLC in Texas with a friend. Texas does not require an operating agreement, so they skip it. Eighteen months in, Tom wants to leave and expects half the company value in cash. His partner disagrees, and because there is no written buyout method, no agreed valuation, and no exit clause, they fall back on the Texas default statute and a lawyer. The dispute costs both of them thousands and months of stress. A single afternoon spent writing an agreement at the start would have set the buyout terms in advance.

Create your state specific operating agreement in minutes with DBADocs

Writing all of this from scratch, and getting the state rules right, is exactly where most founders stall. DBADocs generates a state specific LLC operating agreement for you in about sixty seconds. You answer a short set of questions about your company, your members, and your state, and it produces a complete document that reflects your state requirements, including the stricter written rules for places like New York. You get a clean, ready to sign agreement without paying four hundred dollars in lawyer fees for a standard document.

If you are forming an LLC in California, Delaware, Maine, Missouri, or New York, you need this document by law. If you are forming anywhere else, you still want it for the bank, the liability protection, and the peace of mind. Generate your own operating agreement now at dbadocs.app and have it done before your coffee goes cold.

Frequently asked questions

Do I have to file my operating agreement with the state? No. No state requires you to file the operating agreement. Even the five states that mandate having one only require you to keep it in your own records.

Does a single member LLC really need an operating agreement? In California, Delaware, Maine, Missouri, and New York, yes, because those states require every LLC to have one. Elsewhere it is not required, but it strengthens your liability protection and is usually needed to open a business bank account, so it is still worth having.

What happens if I do not have one? Your LLC is governed by your state default LLC rules, which may not match what you want. You also lose a key piece of evidence that your business is separate from you personally, and you may struggle to open bank accounts or bring on investors.

Can I write my own operating agreement? Yes. There is no requirement to use a lawyer. Many founders use a guided generator to produce a state specific document quickly, then keep a signed copy. If your situation is complex, for example a multi member LLC with unusual ownership terms, a review by an attorney is sensible.

Is an oral operating agreement enough in California? California technically allows an oral agreement, but you cannot prove the terms of an oral agreement later, and banks will not accept one. Always put it in writing.

How often should I update it? Review the agreement whenever ownership changes, a member joins or leaves, or you switch between member managed and manager managed. Otherwise a yearly check is good practice.

This article is general information, not legal advice. For advice on your specific situation, speak to a licensed attorney in your state.