New Mexico Single-Member LLC Operating Agreement
Create a New Mexico single-member LLC operating agreement with state-specific guidance on the written-agreement requirement, default rules, and liability protection.
Introduction
A single-member LLC operating agreement is the internal document where you, as the sole owner of a New Mexico LLC, set the rules for how your business runs, how profits are handled, and what happens if you bring on a partner or close the business later. New Mexico is unusual among states: its Limited Liability Company Act defines an operating agreement itself as a written agreement, so an oral or handshake understanding does not count as one under the Act, even though nothing stops you from running informally at your own risk. Putting your agreement in writing is what actually lets it override the state's default rules, including how profits get split if you ever add a member.
Key Things to Know
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New Mexico's Limited Liability Company Act defines an "operating agreement" as a written agreement (NMSA 1978 Section 53-19-2(O)). An oral or handshake understanding does not meet the Act's own definition, so it cannot override the state's default rules the way a written agreement can.
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A New Mexico LLC is member-managed by default. A manager-managed election must be stated in the Articles of Organization itself, not just the operating agreement (NMSA 1978 Sections 53-19-8(D), 53-19-15(A)).
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Without an operating agreement, New Mexico law allocates profits and losses in proportion to the value of each member's capital contribution, not split evenly (NMSA 1978 Section 53-19-22).
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A charging order lets a court direct a member's LLC distributions to that member's judgment creditor (NMSA 1978 Section 53-19-35), but New Mexico courts have pierced through a single-member LLC under the state's ordinary veil-piercing standard when the owner dominated the entity for an improper purpose that caused the plaintiff harm (Morrissey v. Krystopowicz, 2015-NMCA-092).
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New Mexico LLCs owe no annual report, and an LLC taxed in its default pass-through form owes no state franchise tax at all.
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New Mexico's $50 annual Corporate Income and Franchise Tax applies only to an LLC that has elected to be taxed as a corporation for federal purposes, not to a default disregarded-entity or partnership-taxed LLC.
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The operating agreement itself is not filed with the state. You form the LLC by filing Articles of Organization ($50 fee) with the New Mexico Secretary of State, entirely online since December 2024.
Key decisions before you file
Before you file a LLC Operating Agreement in New Mexico, a few decisions shape the document: which option to choose and what each one means. The LLC Operating Agreement guide walks through them.
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New Mexico Requirements for LLC Operating Agreement
New Mexico's Limited Liability Company Act defines an "operating agreement" as a written agreement providing for the conduct of the LLC's business and affairs, including any amendment, which must also be in writing (NMSA § 53-19-2(O)). An oral or handshake understanding does not meet this definition, so it cannot serve as an operating agreement capable of overriding the Act's default rules.
A New Mexico LLC is member-managed by default. A manager-managed structure takes effect only if the ARTICLES OF ORGANIZATION themselves contain a statement vesting management in one or more managers; stating a manager-managed structure in the operating agreement alone is not enough (NMSA § 53-19-8(D)). Absent that statement in the articles, management is vested in the members (NMSA § 53-19-15(A)).
Unless the articles of organization or operating agreement provide otherwise, members vote in proportion to the value of their capital contributions, not one member, one vote (NMSA § 53-19-17(A)). Most member decisions, including approving a sale of substantially all assets or a merger, require the affirmative vote of members holding a majority of that voting power; removing a member requires the affirmative vote of all of the other members (NMSA § 53-19-17(B)).
Unless the articles of organization or an operating agreement provide otherwise, New Mexico allocates profits and losses among members in proportion to the value of each member's capital contributions, adjusted to reflect withdrawals of capital, not split evenly per member (NMSA § 53-19-22).
Unless the articles of organization or an operating agreement provide otherwise, interim distributions made before dissolution are allocated among members in the same proportion as profits and losses, based on the value of each member's capital contributions (NMSA § 53-19-23).
Unless the articles of organization or an operating agreement provide otherwise, a membership interest is freely assignable, but an assignee becomes a member, gaining voting and management rights rather than just a right to distributions, only with the unanimous consent of all of the other members (NMSA §§ 53-19-32, 53-19-33). If a member dies or is adjudged incompetent, that member's legal representative has all the rights of an assignee for purposes of settling the member's estate (NMSA § 53-19-34).
Unless the articles of organization or an operating agreement provide otherwise, a member of a perpetual-existence LLC may voluntarily withdraw at any time on 30 days' prior written notice and is entitled to receive the fair market value of their membership interest within a reasonable time after withdrawal (NMSA § 53-19-37). A member of an LLC formed for a definite term has no right to withdraw early unless the agreement allows it.
Unless the articles of organization or an operating agreement provide otherwise, a New Mexico LLC dissolves upon an event stated in the operating agreement, the written consent of members holding a majority of the voting power, or a court's judicial dissolution decree when continuing the business is no longer reasonably practicable (NMSA §§ 53-19-39, 53-19-40). Articles of dissolution must then be filed with the Secretary of State (NMSA § 53-19-41).
New Mexico's Act does not use a "duty of loyalty and duty of care" framework. Instead, unless the articles of organization or an operating agreement provide otherwise, a member with management responsibility, or a manager, is not liable to the LLC or the other members for an act or omission unless it constitutes gross negligence or willful misconduct, and must account for and hold as trustee any profit derived from an LLC transaction or use of LLC property, unless the transaction was disclosed and approved or was fair to the LLC (NMSA § 53-19-16).
A New Mexico LLC must keep at its principal place of business, and tell every member where to find, a current list of every member's and manager's name and address, a copy of the articles of organization and its amendments, copies of the LLC's tax returns and financial statements for the three most recent years, and a copy of every current and prior operating agreement and amendment (NMSA § 53-19-19(A)).
The articles of organization or an operating agreement may provide for indemnification of a member or manager for judgments, settlements, penalties, fines, or expenses incurred in a proceeding arising from that person's status as a member or manager, and for advancing that person's defense expenses before final disposition (NMSA § 53-19-18). New Mexico's statute sets no exceptions to this power in its own text; the scope and any limits of indemnification are set entirely by the operating agreement.
Unless the articles of organization or an operating agreement provide otherwise, amending the articles of organization or the operating agreement requires the affirmative vote of members holding a majority of the voting power of all members (NMSA § 53-19-17(B)(1)). If a provision already requires a greater-than-majority vote to approve a matter, that same greater vote is required to amend that provision (NMSA § 53-19-17(C)).
It is the stated policy of New Mexico's Limited Liability Company Act to give maximum effect to freedom of contract and to the enforceability of operating agreements (NMSA § 53-19-65(A)). That enforceability depends on the operating agreement being in writing: the Act defines an "operating agreement" itself as a written agreement, so an unwritten understanding does not displace the Act's default rules (NMSA § 53-19-2(O)).
On application by a member's judgment creditor, a court may charge that member's LLC interest with payment of the judgment; the creditor then has no more rights than an assignee of the interest would have, meaning economic rights only, not management or voting rights or automatic membership (NMSA § 53-19-35). New Mexico courts have separately pierced through a single-member LLC under the state's ordinary veil-piercing standard when the owner dominated the entity for an improper purpose that caused the plaintiff harm, so the charging order is not an absolute shield if the LLC's separate existence is disregarded (Morrissey v. Krystopowicz, 2015-NMCA-092).
Frequently Asked Questions
It's the internal document where a New Mexico LLC's sole owner sets the rules for running the business and handling profits. New Mexico's LLC Act defines an operating agreement as a written agreement, so putting yours in writing is what actually lets it override the state's default rules and prove your LLC is a real, separate business.
Nothing stops you from running informally. But New Mexico's Limited Liability Company Act defines "operating agreement" as a written agreement (NMSA 1978 Section 53-19-2(O)), so an oral or handshake understanding does not count as one and cannot override any of the state's default rules for your LLC.
New Mexico's default LLC rules fill the gap. Profits and losses get allocated based on the value of each member's capital contribution rather than however you'd choose to split them, which matters most once you bring on a second member and haven't defined your own split in writing (NMSA 1978 Section 53-19-22).
It supports that protection. New Mexico's charging order statute limits a member's judgment creditor to assignee-type rights against that member's LLC interest (NMSA 1978 Section 53-19-35). But New Mexico courts have pierced through a single-member LLC under the ordinary veil-piercing standard when the owner dominated it for an improper purpose (Morrissey v. Krystopowicz, 2015).
Very little. New Mexico has no annual report requirement for LLCs at all, and an LLC taxed in its default pass-through form owes no state franchise tax. The $50 Corporate Income and Franchise Tax applies only if the LLC has elected to be taxed as a corporation for federal purposes.
No. You file Articles of Organization ($50 fee) with the New Mexico Secretary of State to form the LLC, entirely online. The operating agreement itself stays an internal document you keep at your own principal place of business; it's never submitted to the state.
Yes. New Mexico's default standard protects a member or manager from liability absent gross negligence or willful misconduct, and this default, like most of the Act, can be modified by a written operating agreement, consistent with the Act's own stated policy of favoring freedom of contract (NMSA 1978 Section 53-19-65(A)).