The Articles of Organization vs. The Operating Agreement
We signed the articles of organization and assumed we were done forming the company. The state confirmed the filing. The LLC existed. We had not yet written an operating agreement, and we did not yet understand why that distinction mattered.
It took an attorney about four minutes to explain the difference, and the explanation reframed what we understood about the company we had just created.

What the articles of organization do
The articles of organization are the formation document filed with the state. They create the legal entity. In most states they contain: the company's name, the registered agent's name and address, whether the company is member-managed or manager-managed, and the name and address of the organizer.
The articles are a public document. Anyone can search the state's business registry and find them. They are brief, they establish the minimum required by the state, and they do not govern how the company actually works. That is not what they are for.
What the operating agreement does
The operating agreement is the private contract between the members that governs the internal operations of the company. It is not filed with the state. It does not need to be a public document. It is the document that actually controls what happens inside the company.
A well-drafted operating agreement covers: how decisions are made and what voting thresholds apply, how profits and losses are allocated among members, what happens when a member wants to sell or transfer their interest, what happens when a member dies or becomes incapacitated, what happens when the members cannot agree (the deadlock clause), how the company is dissolved if it comes to that, and what the management structure is if the company is manager-managed.
None of this is in the articles of organization. If the operating agreement does not address these questions, the answers come from the state's default LLC statute. Those defaults were written for the average LLC, not yours, and they often produce results that the members would not have chosen if they had been asked.
What the default rules look like
Most state default rules for LLCs allocate voting rights and profit shares proportionally to economic interest. If you contribute 60% of the capital and your partner contributes 40%, the default is 60/40 on votes and profits. If that is what you intended, the default works. If you intended a different arrangement: equal voting despite unequal capital, different profit allocation, different roles, the operating agreement has to say so explicitly.
The default rules on member departures vary by state but in many jurisdictions allow a departing member to force a buyout or trigger dissolution if no buyout occurs. Without a buy-sell provision in the operating agreement that establishes a mechanism and a price, a member who wants out creates a negotiation under the worst possible conditions.
What a minimal operating agreement contains
For a two-member LLC, the operating agreement should at minimum address: how decisions are made (unanimous, majority, or designated manager), how profits are distributed and when, what happens if a member wants to sell their interest (right of first refusal, valuation method, transfer restrictions), what triggers dissolution and how the winding-up process works, and how deadlock is resolved if the members cannot agree.
These are not complex provisions. A short operating agreement that addresses these questions directly is more useful than a long form agreement that addresses everything in the abstract and the important things vaguely.
The operating agreement is not something to draft once and file away. It is the description of how the company works. When something changes in the company, the operating agreement should reflect it. When a member joins or leaves, the agreement is amended. When the management structure changes, the agreement is amended.
The articles say the company exists. The operating agreement says how. Both are necessary. The operating agreement is the one that matters on the day something goes wrong, and it should be ready for that day before the day arrives.
Nobody explained the difference to us when we filed. The state certainly did not. We are telling you now, before you are four minutes into an attorney's office learning it the way we did.
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