Yes. It can also drive without a seatbelt. The question was never whether it's possible. The question is what happens to you when something goes wrong.
An LLC operating agreement is the document that determines who owns what, who decides what, how profits move, and what happens when a partner wants out or a member dies or someone stops showing up. Without one, your state answers all of those questions for you. And your state does not know your business.
Technically Yes. Practically, You're Unprotected.
Most states do not require an LLC operating agreement to form an LLC. You file your Articles of Organization, pay the filing fee, get your confirmation, and you're done. The LLC exists. It is a real legal entity. It just has no internal rules of its own.
Five states are the exception. California, Delaware, Maine, Missouri, and New York require an operating agreement for LLCs by statute. In California, that requirement comes from Corporations Code § 17701.10. If you're operating in one of these states without an operating agreement, you're not just unprotected. You're out of compliance.
For everyone else, the absence of an operating agreement doesn't make your LLC illegal. It makes it ungoverned. Every question your operating agreement should answer gets handed to your state's default statutory rules instead. In California, those defaults are found throughout the Corporations Code. In Washington, it's RCW 25.15. In Florida, it's Chapter 605. These default rules were written for a generic, hypothetical LLC. They were not written for yours.
The defaults are not inherently malicious. Some of them are reasonable. But they apply uniformly, regardless of what you actually intended, what you actually agreed to with your co-founder over dinner two years ago, or what your business actually needs. When a dispute arises, the default rules are what a court applies. What you meant is almost entirely irrelevant without a written document to prove it.
There is one more practical problem that rarely gets discussed: banks and investors. If you ever try to open a business bank account at a serious institution, bring on a capital partner, or close a funding round, you will be asked for your operating agreement. "We don't have one" is not an answer that inspires confidence. It is an answer that ends conversations.
What an LLC Operating Agreement Actually Does (That State Law Cannot)
The operating agreement is where your LLC stops being a legal shell and starts being a functioning business structure. It is the governing document. Everything that matters about how your company actually runs lives here, or should.
Ownership percentages are the obvious one. If you have two members and you each contributed different amounts of capital, worked different amounts, and have different expectations about how profits get distributed, none of that is reflected in the default rules. Default rules in most states assume equal ownership and equal voting rights. If that is not your arrangement, you need a written operating agreement for your LLC that says otherwise, explicitly and unambiguously.
Fiduciary duties are where things get genuinely complicated. In California, under Corporations Code § 17701.10(e), members can modify or eliminate fiduciary duties owed to each other, but only in a written operating agreement, and only with the informed consent of the affected members. You cannot do this verbally. You cannot do it retroactively. If your LLC involves a managing member with significant discretionary authority, and you have not addressed fiduciary duties in writing, you have left open an enormous avenue for litigation.
The operating agreement also controls what happens when someone wants to leave. Can a member transfer their interest to a third party? Does the LLC have a right of first refusal? What triggers a buyout, and at what valuation? These are not abstract questions. They are the exact questions that come up when a co-founder gets divorced, gets sued personally, or simply decides they want out. Without written answers, you get whatever the statute provides, and the statute was not written with your specific situation in mind.
There is also the question of management structure. Member-managed versus manager-managed is a distinction with real legal consequences. A member-managed LLC means every member has authority to bind the company. If you have a passive investor who is technically a member, and you have not addressed management authority in your operating agreement, that investor may have the legal right to sign contracts on your behalf. That is not a theoretical risk. That is a scenario that plays out in litigation regularly.
One more thing your state law cannot do: protect non-compete provisions the way you might expect. California Business and Professions Code § 16600 was significantly broadened in 2024. Most non-compete clauses are now unenforceable in California, including ones embedded in LLC operating agreements. If your operating agreement contains restrictions on what a departing member can do after they leave, and that agreement was drafted before 2024 or by someone who wasn't paying attention, those provisions may be void. This is not a hypothetical. This is a reason to have your existing operating agreement reviewed now.
The Template Problem: Why a Downloaded Operating Agreement for Your LLC Is Not a Strategy
The LLC operating agreement template is one of the most dangerous documents on the internet. Not because it's fraudulent. Because it looks exactly like the real thing.
A template is a document designed to be generally applicable. Your business is not general. It is specific. It has a specific ownership structure, specific capital contributions, specific management arrangements, and specific risks. A template addresses none of that. It addresses the median hypothetical LLC, which may share almost nothing in common with yours.
The other problem with templates is that they go stale. The law changes. California's 2024 amendments to Business and Professions Code § 16600 made significant portions of pre-existing operating agreements unenforceable overnight. Pennsylvania introduced new annual report requirements for LLCs starting in 2026. A template you downloaded in 2022 does not reflect any of this. It reflects the law as someone understood it when they wrote the template, in a state that may not be yours, under circumstances that may not apply.
The template problem compounds when you have multiple members. A single-member LLC operating agreement is relatively simple. It primarily exists to establish the separation between you and the business, document your capital contribution, and satisfy the statutory requirement if you're in a state that has one. A multi-member LLC operating agreement is an entirely different instrument. It is, functionally, a contract between the members. It governs what happens when people disagree. A template cannot anticipate what you and your co-founder will disagree about, because it doesn't know you.
People write their own operating agreements for their LLCs, too. The question of whether you can is technically yes. The question of whether you should depends entirely on whether you are a business attorney who practices in the relevant jurisdiction. Drafting your own operating agreement is not like drafting your own email. The consequences of an ambiguous provision, a missing clause, or a term that contradicts your state's statute are not discovered until there is a dispute. By then, the cost of fixing it is orders of magnitude higher than the cost of having it done correctly the first time.
When the Absence of an Operating Agreement Becomes a Lawsuit
Everything above is theoretical until it isn't. The absence of an operating agreement does not cause problems on a quiet Tuesday. It causes problems when a relationship breaks down, when a member dies unexpectedly, when someone brings a creditor into the picture, or when the business becomes valuable enough that someone decides their share of it is worth fighting over.
Here is a scenario that is not hypothetical. Two founders form an LLC. They agree verbally that one owns 60% and the other owns 40%. They never put it in writing. Three years later, the business is worth real money. The 40% founder argues that the default rules apply, that ownership is equal, and that they are owed 50%. There is no written operating agreement to say otherwise. The 60% founder now has a lawsuit on their hands, and the outcome is genuinely uncertain.
The liability shield is the other casualty. The entire point of an LLC is that your personal assets are protected from business creditors. That protection is not absolute. Courts will pierce the corporate veil when an LLC is not maintained as a separate entity. One of the factors courts look at is whether the LLC has the governance structure of a real business. An LLC with no operating agreement, no minutes, no records, and no separation from its owner's personal finances looks less like a legitimate business entity and more like a fiction. The fiction does not get the protection.
The operating agreement is not a formality. It is the evidence that your LLC is real.
If a dispute arises and you have a well-drafted operating agreement, you have a document. You have the rules everyone agreed to. You have a basis for resolution that does not require a judge to make it up. If you don't have one, you are asking a court to interpret your intent from context clues, and courts are not particularly good at that, and they are not particularly sympathetic to people who had the opportunity to get this right and didn't.
If your LLC has no operating agreement, or has one you printed from the internet three years ago, this is the conversation that fixes that.
If you're ready to have your LLC operating agreement drafted or reviewed by an attorney who will actually read your structure and tell you what's missing, book a paid intake with Delina. This is not a free call. It is a focused, strategic session with an attorney who has read everything above and has specific opinions about your situation.
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