LLC Operating Agreement: What You Need to Know

You formed your LLC online in twenty minutes. The state took your filing fee, issued a certificate, and never once asked for an operating agreement — so it's easy to assume you don't need one. Then a bank asks for it. Or a co-owner wants out. Or your tax preparer asks how profits are supposed to be split, and the honest answer is "we never wrote that down."

An operating agreement is the internal rulebook for your LLC: who owns what, who decides what, where the money goes, and what happens when something changes. It's also one of the few documents where the legal side and the tax side of your business either line up — or quietly contradict each other for years.

Here's what belongs in yours, why single-member LLCs need one too, and the tax traps we see most often.

What is an operating agreement — and why doesn't the state ask for one?

Your articles of organization create the LLC; the operating agreement governs it. States generally treat the agreement as a private contract among the members, so most don't require you to file it anywhere — and many don't require you to have one at all.

A handful of states do require an operating agreement in some form — California, Delaware, Maine, Missouri, and New York are the ones usually cited, with New York specifically calling for a written one. But "not legally required" is doing a lot of work in the other states, because when you don't have an agreement, you don't get freedom — you get your state's default LLC statute, written by legislators who have never met your business.

What happens if you never write one?

If your operating agreement is silent (or nonexistent), state default rules fill the gap. Those defaults vary by state, but the pattern looks like this:

None of these defaults are crazy — they're just generic. And for a 50/50 two-member LLC, "no tiebreaker" is a business-ending feature, not a technicality.

Do single-member LLCs really need one?

Yes — and this is the most common pushback we hear. There's no co-owner to disagree with, so what's the point?

Three points, generally speaking:

1. Liability separation. The main reason your LLC exists is to keep business liabilities away from personal assets. Courts weighing whether to "pierce the veil" look at whether you treated the LLC as a genuinely separate thing. An operating agreement — alongside a separate bank account and clean books — is basic evidence that you did.
2. Banks and lenders will ask. Opening business accounts, applying for loans, closing on property in the LLC's name — the operating agreement is standard paperwork. Scrambling to draft one the week of a closing is a bad time to make governance decisions.
3. Succession. If something happens to you, the agreement tells your family and your state what happens to the company. Without it, you've left a small estate-administration puzzle behind.

How does your operating agreement interact with your taxes?

This is the part most templates ignore, and it's where an accounting firm sees problems before a lawyer does. The IRS doesn't dictate what your operating agreement says — but your tax elections and your agreement have to tell the same story.

• Default classifications. A single-member LLC is disregarded for federal income tax by default (Schedule C for individuals); a multi-member LLC defaults to a partnership (Form 1065, K-1s). Your agreement's profit-and-loss language is effectively tax language.
• Partnership allocations. If your LLC is taxed as a partnership and the agreement gives someone a special allocation — say, 70% of early losses to the money partner — those allocations generally need to have "substantial economic effect" under the Section 704(b) rules to hold up. Boilerplate templates rarely handle this well.
• The S corporation trap. This one is expensive. An S corporation can have only one class of stock, which generally means distributions must be pro-rata to ownership. Many LLCs elect S status for payroll-tax savings but keep partnership-style boilerplate that permits disproportionate distributions or special allocations. Language like that can put the S election itself at risk — and a blown S election is a genuinely painful cleanup.
• Guaranteed payments vs. salaries. Partnership-taxed LLCs pay working members through guaranteed payments and draws; S-elected LLCs must run actual payroll with a reasonable salary. Your agreement should reflect the regime you're actually in.

A worked example, hedged the way it deserves: two partners form an LLC, split ownership 50/50, and later elect S status because the numbers look good — you can sanity-check that kind of decision with our S-Corp Savings Calculator. But their template agreement still says profits "may be distributed as the members agree from time to time," and in year two, one member takes $40,000 more in distributions than the other. That pattern, depending on the facts, can look like a second class of stock. Best case, it's a corrective-distribution cleanup; worst case, the election is challenged. A two-paragraph amendment when they elected S status would have prevented the whole question.

What are the most expensive mistakes we actually see?

• The template mismatch. Partnership boilerplate inside an S-elected LLC (see above). This is the #1 issue we flag when reviewing new clients' documents.
• No buy-sell terms. Death, divorce, disability, or just "I'm done" — with no valuation method and no payment terms, every exit becomes a negotiation between people who are no longer getting along.
• The 50/50 deadlock. Equal partners, no tiebreaker. Add a deadlock clause while you still like each other.
• Silent capital calls. The business needs cash; one member can contribute, the other can't. What happens to ownership? Decide in writing before it's real money.
• The agreement nobody updates. You elected S status, added a member, moved states, or changed how profits split — and the agreement still describes 2019. Reread it whenever anything material changes, and skim it annually. (Recent example: federal beneficial-ownership (BOI) reporting now generally applies only to foreign-formed entities, but New York's LLC Transparency Act took effect January 1, 2026 — entity paperwork rules keep moving.)

Problems come here to get solved. If you're staring at a template agreement and a tax election that may not match, that's a fifteen-minute conversation, not a crisis — and it's exactly the kind of mismatch we look for in a first review.

When should you have it reviewed?

At minimum: when you form the LLC, when you change your tax election, when members join or leave, when you move or expand to a new state, and before any financing or sale. Tax rules shift underneath entity decisions too — the 2025–2026 law changes moved several entity-choice inputs, and our 2026 tax changes hub is the running summary. A document review is typically a small, fixed-scope engagement — see pricing for how we structure that.

We're accountants, not attorneys — an attorney should draft or bless the legal language. Our job is the other half: making sure the agreement and the tax strategy don't contradict each other. The best results happen when both are in the room.

FAQ

Is an operating agreement legally required?

In most states, no — but California, Delaware, Maine, Missouri, and New York require one in some form (New York expects it in writing). Even where optional, skipping it means state default rules govern your LLC.

Can I just use a free template?

A template is better than nothing for a simple single-member LLC. The risk shows up when templates meet real complexity: multiple members, special profit splits, or an S election. That's where generic language creates tax problems it can't see.

Does the IRS ever look at my operating agreement?

It's not filed with your return, but it can absolutely come up — in an audit, when validating partnership allocations, or when examining whether an S corporation made proportionate distributions. Lenders and buyers will read it closely too.

What's the difference between articles of organization and an operating agreement?

Articles of organization are the short public filing that creates the LLC. The operating agreement is the private, detailed contract that governs it. You need both; they do different jobs.

My LLC elected S status years ago. Should the agreement change?

Very likely, yes — at minimum it should require pro-rata distributions and remove partnership-style allocation language. If distributions haven't been proportionate, get that reviewed sooner rather than later.

Reviewed by the WAYG tax team · Updated July 2026