Single-member LLC operating agreement

Last updated: 2026-05-21

Roughly three quarters of all LLC filings in the United States are single-member. The most expensive misconception about them is that a one-owner LLC doesn't need an operating agreement because there's nobody to sign an agreement with. Five states (California, New York, Missouri, Maine, Delaware) explicitly require one in writing even for a sole owner. In the other 45, no statute mandates it — but commercial banks refuse to open business accounts without seeing one, and judges evaluating piercing-the-veil claims do not look kindly on its absence.

Yes, you need one — even though you are the only owner

Five scenarios break the "only owner, so no agreement needed" argument, and any of them can show up within the first year of an LLC's life.

Start with bank account opening. Chase, Bank of America, Wells Fargo, US Bank, Capital One, and most regional banks operating under standard commercial deposit policies all ask for the operating agreement when an LLC walks in to open a business checking account. The Articles of Organization and EIN letter prove the LLC exists; the operating agreement is what proves that the person sitting across the desk has authority to sign on the account. For a single-member LLC, the operating agreement is the document that names you as the person authorized to bind the entity.

The liability shield in litigation depends on the LLC being treated as separate from its owner in practice. Courts evaluating piercing-the-veil claims weigh several factors — separate bank accounts, adequate capitalization, contracts signed in the LLC's name, no commingling of personal and business funds — and a written operating agreement is one of them. The presence of one isn't decisive on its own. The absence of one, when the LLC's other separation factors are weak, is consistently cited by judges as evidence that the owner did not treat the LLC as separate from themselves.

Lenders ask too. The SBA's 7(a) program requires lenders to verify the LLC's governing document, and most business-credit-card applications from American Express, Capital One Spark, and Chase Ink request it during the review for higher credit limits. Without one, the application is incomplete. State tax authorities — California and New York are the active examples — ask for the operating agreement during entity-level reviews, and the IRS examiner will request the LLC's organizational documents during an audit to verify the entity's structure and the owner's authority to claim deductions on its behalf.

The most overlooked scenario is death or incapacity. If the sole member dies and the operating agreement does not address succession, the LLC's fate is determined by state statute, not by what the owner would have wanted. In most states, the LLC dissolves automatically on the death of the sole member, and the assets pass to the probate estate, which may take months or years to settle. A succession clause in the operating agreement can name a transferee, transition the membership to a trust, or designate a manager to keep the business running while the estate is administered — the difference between a continuing business and an entity that quietly winds down on the worst possible day.

Five states that require an operating agreement in writing

Most states' LLC statutes are silent on whether an operating agreement is required, defaulting to state-provided rules when no agreement exists. Five states are more demanding.

• California — California Corporations Code § 17701.11 requires every California LLC to have an operating agreement. It can be oral or written, but a written agreement is what banks, courts, and tax authorities expect. The agreement does not need to be filed with the state.
• New York — New York Limited Liability Company Law § 417 requires an operating agreement to be adopted within 90 days of formation. New York is the most procedurally strict of the five: the timing requirement is statutory, and failure to adopt within the window can be cited in subsequent disputes about LLC governance.
• Missouri — Missouri Revised Statutes § 347.081 requires every LLC to have an operating agreement. Missouri courts have enforced this requirement strictly, treating the default state rules as the operating agreement when no written one exists — usually to the disadvantage of the LLC owner.
• Maine — 31 Maine Revised Statutes § 1521 requires an operating agreement for every LLC. Maine's statute is the most explicit on enforceability: the operating agreement, once adopted, governs the LLC and the members' rights even when state default rules would say otherwise.
• Delaware — 6 Delaware Code § 18-101(9) defines the LLC as the entity governed by its operating agreement, which makes the operating agreement effectively required even though the word "required" does not appear in the statute. Delaware courts treat the operating agreement as the controlling document in any dispute involving the LLC's governance.

If you are forming an LLC in any of these five states, treat the written operating agreement as part of the formation paperwork, not as an optional follow-up.

The nine clauses every SMLLC operating agreement should contain

A complete single-member operating agreement runs three to seven pages. The structure does not need to be elaborate, but it must cover nine specific items. Any reputable template — free or paid — will include all nine. If a template skips any of them, do not use it.

1. Entity identification. Full legal name of the LLC, state of formation, date of formation, EIN, registered agent name and address, principal office address. This block establishes the LLC as a specific, identifiable legal entity.
2. Sole member declaration. The sole member's full legal name, residential or business address, and the explicit statement that this person is the only member of the LLC. This is the foundational clause that distinguishes the document as a single-member operating agreement.
3. Initial capital contribution. The amount of money or value of property the member contributed to capitalize the LLC at formation. Even a $100 initial contribution should be stated. This clause prevents future ambiguity about whether the LLC is adequately capitalized — one of the factors courts evaluate in piercing-the-veil cases.
4. Management authority. A statement that the sole member has full authority to manage the LLC, sign contracts in its name, open and close bank accounts, hire employees, file tax returns, and make all decisions regarding the LLC's business. If the member intends to appoint a manager who is not the member, the appointment goes here.
5. Profits, losses, distributions. The sole member receives all profits, bears all losses, and decides when distributions are made. This clause is short but important — it confirms that the LLC's tax treatment as a disregarded entity (the IRS default) is intentional and the member's basis for claiming income on Schedule C is established.
6. Indemnification. The LLC indemnifies the sole member for actions taken in good faith on behalf of the LLC. This clause shifts liability from the member personally to the LLC, reinforcing the separation between the entity and the owner.
7. Books, records, and accounting method. The LLC will maintain its own books and records separate from the member's personal finances. The accounting method (cash or accrual) is stated. This clause supports the no-commingling factor in liability disputes.
8. Dissolution. The events that trigger dissolution — member's voluntary decision, member's death without a succession plan, court order, regulatory action. What happens to remaining assets after creditors are paid (they go to the member or to the member's estate).
9. Succession. Who inherits the membership interest if the sole member dies or becomes incapacitated. Options: a named transferee, a revocable living trust, a probate estate (the default if nothing is specified). The succession clause is what keeps the LLC operational during estate settlement instead of dissolving automatically.

An optional tenth clause — amendment — states that the sole member can amend the operating agreement at any time in writing. Most templates include it. For a single-member LLC, the amendment power is implicit (the only signatory can amend a contract with themselves), but including the clause is harmless and clarifies the process.

Where single-member and multi-member operating agreements differ

Multi-member operating agreements are contracts between owners; single-member agreements govern one person. They diverge in four places.

Voting and decision-making. Multi-member LLCs need voting rules: majority, supermajority, unanimous consent for certain decisions, manager-managed vs member-managed. Single-member LLCs need none of this. The sole member decides. Templates that include extensive voting provisions for an SMLLC are usually multi-member templates that were not properly adapted.

Capital contributions and ownership percentages. Multi-member agreements track who contributed what and what percentage of the LLC each member owns. Single-member agreements have one line: the sole member contributed $X and owns 100%.

Transfer and buyout restrictions. Multi-member agreements include buy-sell provisions, rights of first refusal, and price-setting formulas for when a member leaves. Single-member agreements do not need any of this; the member can transfer the entire interest at any time without seeking consent.

Succession. This is the one area where single-member agreements need MORE attention than multi-member agreements. In a multi-member LLC, surviving members can continue operating while one member's interest is being settled. In a single-member LLC, the death of the sole member can dissolve the entity unless the operating agreement explicitly addresses succession. The succession clause in an SMLLC operating agreement is not boilerplate; it is the single most important provision.

Where to get a free template

Several free, reputable sources exist. The best choice depends on the state of formation.

• State Secretary of State websites. Some states post model agreements. New York's Department of State, the Maine Secretary of State's office, and the California Secretary of State's business resources page all publish or link to model SMLLC operating agreements. Use the model published by your state of formation first if one exists, since it will reference the correct state statute and use language the state courts are familiar with.
• State bar associations. Many state bar associations publish free LLC operating agreement forms for public use. The state bar form is usually attorney-drafted, state-specific, and updated periodically as the state's LLC statute changes.
• SCORE. SCORE is the Small Business Administration's mentorship program. The SCORE template library includes a generic SMLLC operating agreement that covers the nine standard clauses. The SCORE template is not state-specific but is suitable as a starting point in states without a published model.
• Cornell Legal Information Institute. Cornell LII hosts the Uniform Limited Liability Company Act, which is the model statute that most states have adopted in some form. The Uniform Act provides the underlying language for the standard nine clauses and is useful for understanding what each clause means in plain English.
• Formation service templates. Generic LLC formation services include a templated operating agreement in their mid-tier and higher formation packages. The templates are reusable across states and cover the standard nine clauses.

The cheapest path: download the state-specific model from your Secretary of State if one exists; otherwise use the SCORE template or your state bar association's form. Fill in the blanks, sign and date. About 20 minutes, no money out of pocket.

When a paid or attorney-drafted template is worth the cost

For a routine single-member LLC — a consulting business, a one-person e-commerce store, a freelance service business, a single-property rental — a free template covers what the owner needs. Paying $200 to $500 to an attorney to draft a custom operating agreement is not necessary and rarely changes any outcome that will matter later.

An attorney-drafted operating agreement starts to be worth the cost in four specific situations.

• Multiple LLCs with related operations. Holding-company structures, real estate portfolios with separate LLCs per property, professional practices with parallel entities for different service lines. Consistency across multiple LLCs reduces governance risk and is hard to get right with templates.
• Regulated industries. Financial advisory firms, healthcare providers, licensed cannabis operators, alcohol distributors, insurance brokers. Industry-specific compliance language belongs in the operating agreement and is rarely in a generic template.
• Significant assets in the LLC. Real estate over $500K, intellectual property portfolios, ongoing royalty streams, equity in other businesses. Custom drafting clarifies how assets are protected and how they pass on succession.
• Planned conversion to multi-member. If the owner intends to add members within the next 12 to 24 months — bringing in a partner, raising outside capital, employee equity grants — an attorney-drafted SMLLC operating agreement can include conversion provisions that make the transition cleaner.

Outside those four cases, paying for custom drafting is paying for paperwork the owner will never read.

The minimum viable SMLLC operating agreement

If the bank just asked for one and you need it today, three paragraphs can cover all nine clauses in compressed form.

The first paragraph identifies the LLC and the sole member: full legal name of the LLC, state of formation, EIN, registered agent, principal office, the sole member's name and address, and the statement that the person named is the only member.

The second paragraph establishes authority and tax treatment. The sole member has full authority to manage the LLC and act on its behalf; the sole member contributed initial capital of a stated amount; the sole member receives all profits, bears all losses, and decides distributions; and the LLC will be treated as a disregarded entity for federal tax purposes (or if a different election has been made, state which).

The third paragraph addresses dissolution and succession. The LLC continues until dissolved by the member's decision, the member's death, or other listed events. On dissolution, after creditors are paid, remaining assets pass to the member or the member's named successor. The member's interest passes to a named transferee, a named trust, or the member's estate, as the member elects.

Sign and date the document, then store it with the EIN letter and Articles of Organization. The three-paragraph version is enough to satisfy a bank, an IRS examiner in a standard audit, and a court reviewing routine entity separation. It is not a substitute for attorney drafting in the four scenarios above, but for the typical SMLLC it is sufficient.

Seven common mistakes to avoid

1. Using a multi-member template without adapting it. Multi-member templates include voting provisions, capital account adjustments, partner buyout formulas, and dispute resolution mechanisms that do not apply to an SMLLC and create ambiguity when they appear in the document. Use a single-member-specific template, or remove every multi-member clause from a multi-member template before signing.
2. Not signing or dating the agreement. An unsigned operating agreement is not enforceable. An undated one is harder to introduce as evidence of the LLC's governance at any specific point in time. Sign and date on the same day the agreement is adopted.
3. Skipping the succession clause. The most consequential omission. Without a succession clause, the SMLLC dissolves automatically when the sole member dies in most states. The succession clause is the line of text that prevents the LLC from being unwound during probate.
4. Writing "I" and "me" instead of "the member." Operating agreements are written in third person and refer to the sole member by title (the Member, the Sole Member) rather than by personal pronoun. The reason is the operating agreement is a document governing the entity, not a personal statement by the owner. Pronoun usage signals whether the author understood the entity-separateness principle.
5. Filing the operating agreement with the state. Do not file it. The operating agreement is an internal document. Articles of Organization is what gets filed. Some Secretary of State offices will accept an operating agreement if you submit one, then place it in the public business filing record where it does not belong and where competitors and creditors can read it.
6. Not updating after material business changes. If the LLC's address changes, the registered agent changes, the EIN reissues, or the tax classification changes (S-corp election, for example), update the operating agreement. Mismatch between the operating agreement and current reality creates audit and litigation exposure.
7. Treating the operating agreement as a one-time formality. The operating agreement is the document the bank, the IRS, and the court will read when they evaluate the LLC. Keep it accessible, keep it current, and re-read it before signing any contract that depends on the LLC's structure.

State-specific notes for the five required states

California. Operating agreement is required by statute (Cal. Corp. Code § 17701.11). The agreement can be oral or written, but a written agreement is what every California bank and court expects. The agreement is not filed with the Secretary of State. California's $800 annual franchise tax applies to the LLC regardless of operating agreement status; the operating agreement does not affect the franchise tax obligation.

New York. Operating agreement must be adopted within 90 days of LLC formation under N.Y. LLC Law § 417. Failure to adopt within the window does not invalidate the LLC but is cited by New York courts in disputes about LLC governance. New York's separate publication requirement, which applies to all new LLCs, is unrelated to the operating agreement — the publication is filed with the Department of State; the operating agreement is not.

Missouri. Operating agreement is required for every LLC under Mo. Rev. Stat. § 347.081. Missouri courts have ruled that when an LLC has no written operating agreement, the state's default statutory rules govern the LLC — rules that rarely match what the owner would have chosen. The penalty for not having one is the loss of customization.

Maine. Operating agreement is required under 31 M.R.S. § 1521. Maine's statute is among the most explicit on enforceability: a properly adopted operating agreement controls the LLC's governance even when state default rules would suggest otherwise. Maine courts strictly enforce the operating agreement.

Delaware. Operating agreement is effectively required by the way the Delaware Limited Liability Company Act defines the LLC (6 Del. C. § 18-101(9)). Delaware courts treat the operating agreement as the controlling document in any dispute. Delaware is the state where having a thorough written operating agreement has the most upside, because the Delaware Chancery Court will enforce its terms with little deference to default rules.

Executing and storing the operating agreement

Once the agreement is drafted, execution is straightforward. The sole member signs and dates the document. No state requires notarization, though some banks request a notarized copy and notarization can be added later at any UPS Store or bank branch for $5 to $15. No witness is required. No filing with any government agency is required or appropriate.

Store the signed original with the LLC's other formation documents: the EIN confirmation letter from the IRS, the stamped Articles of Organization returned by the Secretary of State, the bank's signature card. Keep a digital copy in cloud storage (Google Drive, Dropbox, iCloud) so it is retrievable if the physical copy is lost. Provide a copy to the LLC's accountant or CPA for tax-preparation reference. Provide a copy to the bank if the bank requests one for the account file.

When to update the operating agreement

Operating agreements do not require annual updates. They are written once and remain in effect until a triggering event occurs. The triggering events that justify an update are:

• The LLC's principal office address changes.
• The registered agent changes.
• The EIN is reissued (rare, but happens after certain structural changes).
• The LLC adds a member (converting from single-member to multi-member — at which point a multi-member agreement replaces the SMLLC agreement entirely).
• The LLC elects a different tax classification (S-corp election under Form 2553, or C-corp election under Form 8832).
• The succession plan changes (named transferee changes, trust is created or dissolved).
• The state of formation changes (the LLC re-domesticates to a new state).

An update is a fresh signed document, dated on the day of execution, that supersedes the prior version. Keep the prior version in the LLC's records for historical reference.

Related guides

• How to form an LLC, step by step — the full formation process from name search to bank account.
• LLC operating agreement template (multi-member overview) — how multi-member agreements differ.
• Articles of Organization explained — the public-filing document that pairs with the operating agreement.
• How to get an EIN for an LLC — free at IRS.gov, 10 minutes online.
• How is an LLC taxed? — disregarded entity is the default for SMLLCs; what that means and when to elect something else.
• LLC vs S-corp — when an SMLLC should elect S-corp tax treatment.
• Registered agent — the address that appears on the LLC's public record and inside the operating agreement.

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