Is an Operating Agreement Required for a New York LLC? Yes, Within 90 Days, and Here Is What the Law Decides for You If You Skip It (2026)

Is an operating agreement legally required in New York?

Yes. New York Limited Liability Company Law Section 417(a) states that the members of an LLC shall adopt a written operating agreement, and it fixes the timing: before, at the time of, or within 90 days after the filing of the Articles of Organization. That makes New York one of a small handful of states, alongside Missouri, Maine, Delaware, and California, where the operating agreement is a legal requirement rather than a recommendation.

I form LLCs for business owners across Nassau and Suffolk County, and I would estimate that more than half of the existing companies that come to me for other work, a lease, a sale, a dispute between partners, have no operating agreement at all, or have a two page template one of the owners downloaded the week they started. Nobody told them New York required it, because the Department of State does not ask for it, the publication requirement gets all the attention, and the online formation services bury it as an upsell.

Here is the hard truth: the state will never come after you for missing the 90 day deadline. Your partner will. Or the bank will, when you apply for a line of credit. Or a buyer will, when you try to sell. Or a judge will, when a creditor argues your one-person LLC is just you under another name. The requirement in Section 417 has no teeth, and that is precisely why it gets ignored, and precisely why the consequences show up years later at the worst possible moment.

What is the 90 day rule for a New York LLC operating agreement?

The 90 day rule comes from LLC Law 417(a): the members must adopt a written operating agreement no later than 90 days after the Department of State files the Articles of Organization. The clock starts on the filing date shown on the state's filing receipt, not the date you submitted the paperwork. The agreement is an internal document kept with the company's records and is never filed with the state.

If the 90 days have already passed, do not panic and do not backdate anything. Section 417 does not void the LLC or trigger a penalty for a late agreement, and courts, including in Spires v. Lighthouse Solutions, LLC, have treated the absence of an agreement as a gap filled by the statute rather than a defect in the company. Sign one now, date it honestly, and state in it that it governs from the date of signing. That fixes the problem going forward, which is where the problems live.

What happens if a New York LLC has no operating agreement?

If a New York LLC has no operating agreement, the default provisions of the Limited Liability Company Law govern every question the members never answered in writing: how profits and losses are allocated, how distributions are made, how votes are counted, whether a member can leave, and how the company is dissolved. The LLC continues to exist and its members keep their liability protection, but the terms of their relationship are written by the legislature instead of by them.

The default rules are not crazy. They are just blunt. Under Section 503 and Section 504, profits, losses, and distributions are shared in proportion to the value of each member's contributions as stated in the company's records. Under Section 402, voting power follows the same contribution percentages, and a majority in interest can make most decisions, including dissolving the company under Section 701. Under Section 606, a member generally has no right to withdraw before dissolution. Under Section 603, a member can assign the economic rights in a membership interest to an outsider, who gets the money but not a vote unless the other members consent.

Now picture the two common Long Island partnerships I see. Two friends open a contracting business: one puts in $50,000 of equipment and the other puts in the customer list and does all the work. With no agreement, the default rules hand the equipment partner the majority of the profits and the votes, because contributions are measured by recorded value and sweat is not recorded anywhere. Or three siblings inherit a family business held in an LLC, and one wants out. There is no default buyout, no default valuation, and no default way to expel a partner, no matter what he or she has done. Those situations end up in Supreme Court in Mineola or Riverhead, and the litigation costs more than a hundred operating agreements would have.

Does a single-member LLC need an operating agreement in New York?

Yes. Section 417 applies to every New York LLC, and a single-member LLC is no exception. Beyond the statutory requirement, a single-member operating agreement is the primary evidence that the company is a separate entity from its owner, which is what protects your house and personal savings if the business is sued, and it is the document banks, landlords, lenders, and buyers will ask for before they do business with you.

When a plaintiff's lawyer wants to pierce the veil of a one-person LLC on Long Island, the argument is always the same: this company is a shell, the owner ignored formalities, and the owner and the LLC are one and the same. An LLC that has no operating agreement, no separate bank account, and no record of decisions makes that argument for them. A signed agreement, even a short one, that sets out the owner's contribution, the management structure, and what happens to the company if the owner dies or becomes disabled is the cheapest liability protection you will ever buy. It also answers a question your family will need answered someday: who runs this company if something happens to you.

What do New York's default LLC rules say when the agreement is silent?

This table summarizes what the Limited Liability Company Law decides for you on the most common questions when there is no operating agreement, or when the agreement does not address the issue.

An operating agreement can change nearly every line in that table, which is the whole point of having one.

What should a New York LLC operating agreement include?

A good New York operating agreement answers the questions the statute answers badly, and it does it in the order the members will actually need them.

Do you file the operating agreement with New York State, and can you change it later?

No. The operating agreement is never filed with the Department of State or any other agency; it is kept with the LLC's records alongside the filed Articles of Organization, the Certificate of Publication, and the members' contribution records. It can be amended at any time by the vote the agreement itself requires, and if the agreement is silent, Section 417(b) allows the members to amend it in writing.

How do you get a New York operating agreement done right?

The choice is not between a lawyer and nothing. It is between an agreement that reflects what you and your partners actually agreed to and a template that reflects what a formation website's lawyer thought was safe for all fifty states. A free template will satisfy Section 417 on paper. It will not tell you that in New York a majority in interest can dissolve the company out from under you, that there is no default way to remove a partner who stopped showing up, or that the contribution-value default just handed your investor partner control of the business you run.