An LLC operating agreement is the internal rulebook of your LLC: a written document that says who owns what percentage, how profits get split, who makes decisions, and what happens when an owner wants out. You don't file it with the state — it lives in your records — and in most states it isn't legally required. Five states require one anyway: California, New York, Missouri, Maine, and Delaware.

Here's the part the legal sites bury: even where it's optional, skipping it means your state's default LLC rules govern your business instead of you — and for single-member LLCs, the agreement is a key piece of evidence that your LLC is actually separate from you, which is the entire point of having an LLC. This guide covers what the document does, exactly what goes in it, and how to get a solid one for free.

What an operating agreement actually does

Three jobs, in order of how often they matter:

  1. It overrides your state's default rules. Every state has a default LLC statute — a generic rulebook that applies when you haven't written your own. Defaults are frequently not what you'd choose: in many states, profits split equally regardless of who invested what, and a member can't transfer ownership without unanimous consent. No agreement means you accepted rules you've never read.
  2. It protects your liability shield. Courts and creditors look at whether you treated the LLC as a real, separate entity. An operating agreement — along with a separate business bank account — is core evidence that it is. This matters most for single-member LLCs, where "is this really separate from the owner?" is exactly the question a court asks before allowing someone to pierce the veil and reach your personal assets.
  3. It answers the questions you'll be asked. Banks request it when opening business accounts, lenders when you apply for financing, and future partners or buyers during any serious negotiation. "We don't have one" is an awkward answer in all three rooms.

What it is not: your articles of organization (the short form you file with the state to create the LLC), your EIN, or your business licenses. The operating agreement is private and internal; those are public and governmental.

Do you need one? The honest answer by situation

Your situation Required by law? Actually need it?
LLC in CA, NY, MO, ME, or DE Yes (written in CA/MO/ME; NY requires written; DE accepts oral/implied) Yes — obviously
Single-member LLC, any state Mostly no Yes — it's veil-protection evidence and banks ask for it
Multi-member LLC (partners, spouses, friends) Mostly no Emphatically yes — this is your dispute-prevention document
LLC taxed as S-corp No Yes — ownership and salary mechanics should be on paper
Sole proprietor, no LLC N/A No — this document only exists for LLCs (comparison here)

The multi-member case deserves the strongest language: never run an LLC with another person without an operating agreement. Every horror story — the 50/50 deadlock, the partner who stops working but keeps collecting, the ex-spouse who inherits a membership stake — is a missing-operating-agreement story. The time to agree on exits is while everyone still likes each other. (Deciding whether to bring on a partner at all? Read this first.)

The 9 sections every operating agreement needs

  1. Basic information. LLC name exactly as filed, principal address, registered agent, formation date, and purpose (a broad "any lawful business" clause keeps you flexible).
  2. Members and ownership percentages. Who owns what, and what each member contributed — cash, equipment, property, or services. Write down the value assigned to non-cash contributions; this is a top-three fight starter.
  3. Profit and loss allocation. Usually proportional to ownership, but it doesn't have to be — the agreement is where you're allowed to say "60/40 split until initial investment is repaid, then 50/50." Also set the distribution schedule and whether members can take draws (how paying yourself works).
  4. Management structure. Member-managed (owners run it day to day — the default for small LLCs) or manager-managed (a designated manager, useful with passive investors). Define which decisions need a simple majority versus unanimous consent — big purchases, debt, adding members.
  5. Voting rights. By ownership percentage or per capita, and — critically for 50/50 LLCs — a deadlock-breaking mechanism: a designated tiebreaker, mediation, or a buy-sell trigger.
  6. New members and exits. How someone joins, how someone leaves, and what happens to a departing member's share. A right of first refusal (remaining members get first shot at buying the stake) is standard and prevents waking up in business with a stranger.
  7. Buyout and buy-sell provisions. What triggers a buyout (death, divorce, disability, bankruptcy, or just wanting out) and — the part everyone skips — how the price gets calculated. A formula agreed now (a revenue multiple, or an appraisal process) is worth more than any other clause in this document.
  8. Dissolution. The wind-down order if you close: debts first, then contributions, then remaining split. Closing a business cleanly is dramatically easier when the process was pre-agreed.
  9. Signatures. Every member signs and keeps a copy. Unsigned templates prove nothing.

Single-member version: same skeleton, minus voting and buyouts — roughly two pages establishing that the LLC is separate, you're the sole member, and what happens to the company if something happens to you.

How to get one (free to $1,000+)

  • Free templates from state bar associations, SCORE, and formation services cover the standard cases well. Fill one out honestly rather than leaving blanks — a template with unfilled buyout terms is a fancy way of having no agreement.
  • Formation services bundle "custom" operating agreements into their $99–$300 packages. Fine, but know you're paying for a filled-in template — the same add-on math applies as with LLC formation fees.
  • A business attorney ($500–$1,500) earns the fee in exactly three situations: unequal partners with complex contributions, outside investors, or a business where a member's exit would be existential. For a solo consultant, it's overkill.

Whichever route: date it, sign it, store it with your formation documents, and revisit it when anything material changes — new member, new profit split, S-corp election. An operating agreement that says something different from reality is worse than none in a dispute.

The mistakes that make agreements worthless

  • Copying a template without reading it. Downloaded agreements default to proportional distributions and majority votes — which may be the opposite of your handshake deal. The document wins in court; make it match reality.
  • No deadlock provision in a 50/50 LLC. The single most common and most expensive omission. Two owners, one vote each, no tiebreaker — that's a lawsuit with extra steps.
  • Skipping the valuation formula. "We'll figure out a fair price if someone leaves" guarantees that the worst moment of the partnership is also when you negotiate the hardest question.
  • Signing it and forgetting it. If your split, members, or management changed and the agreement didn't, you've quietly reverted to he-said-she-said.
  • Treating it as a substitute for the rest of the separation hygiene. The agreement supports your liability shield; commingling funds still voids it. Same logic as insurance: each layer covers what the others don't.

FAQ

Is an operating agreement legally required? In five states, yes — California, New York, Missouri, Maine, and Delaware. Everywhere else it's optional but strongly recommended, because without one your state's default LLC statute decides ownership disputes, profit splits, and exits for you.

Do I need an operating agreement for a single-member LLC? Yes, and not as a formality: it's evidence your LLC is genuinely separate from you (protecting the liability shield), and banks and lenders routinely ask for it. A simple two-page version takes under an hour.

Do I file the operating agreement with the state? No. It's an internal document — keep it with your formation papers and give every member a signed copy. Only your articles of organization get filed.

How much does an operating agreement cost? $0 with a free template, $99–$300 bundled into formation services, $500–$1,500 from an attorney. Solo owners and simple partnerships are usually fine with a carefully completed template; unequal or high-stakes partnerships justify the lawyer.

Can I write my own operating agreement? Yes — no law requires a lawyer. Start from a reputable template, customize the ownership, profit, voting, and buyout sections to match your actual deal, and have every member sign. If any clause makes you think "we'll never need this," that's usually the clause you'll need.

When should I create it — before or after forming the LLC? Right after filing your articles of organization is the natural moment (some banks want it before opening your account). If your LLC already exists without one, today beats any future date — agreements adopted mid-dispute convince no one.