Partners Agreement in LLC Bylaws: What the Commercial Registry Requires in 2026

Key data

If your limited liability company has a partners agreement or family protocol and you have attempted to give it full effectiveness by incorporating it as an ancillary service in the bylaws, this resolution directly affects you. The General Directorate of Legal Security and Public Faith confirmed, in a resolution of June 3, 2026, that the Commercial Registry III of Seville acted correctly in denying the registration of bylaws that configured an ancillary service consisting of "complying with an external partners agreement."

The key lies in Article 86 of the Capital Companies Law (LSC): ancillary services must have specific and determined content that is fully included in the registered bylaws. Mere reference to a reserved notarial document is not sufficient.

What does this regulation establish?

The resolution resolves an appeal against the Commercial Registry's refusal to register a deed of elevation to public of corporate resolutions. The substance of the matter is a common practice in many family LLCs or those with multiple partners: attempting to give the partners agreement effectiveness against third parties and serve as grounds for partner exclusion by elevating it to bylaw status through its incorporation as an ancillary service.

The resolution establishes the following points with clarity:

• Article 86 LSC requires that the content of ancillary services be fully included in the registered bylaws, not in an external document.
• Reference to a reserved notarial document (for example, a partners agreement formalized in a public deed but not registered) does not meet this requirement.
• Parasocial agreements cannot acquire full corporate effectiveness through their indirect incorporation as an ancillary service.
• This doctrine is supported by Supreme Court rulings and the Commercial Court No. 1 of Seville.
• Non-compliance prevents registration and, therefore, enforceability against third parties and effectiveness as grounds for partner exclusion.

Economic and operational impact

The impact is not a fine or a fee: it is the risk of legal ineffectiveness of governance mechanisms that many LLCs take for granted. The practical consequences are:

• Inability to register the bylaws if they contain poorly configured ancillary services, which blocks the elevation to public of corporate resolutions.
• Loss of enforceability against third parties: an unregistered partners agreement cannot be invoked against new partners, creditors, or purchasers of shares.
• Ineffectiveness as grounds for partner exclusion: if non-compliance with the agreement was the intended grounds for excluding a partner, that clause will not be valid if it is not correctly included in the bylaws.
• Rectification costs: adapting the bylaws requires a new public deed, shareholder meeting approval, and new submission to the Registry, with associated notarial and registry costs.

Who does it affect?

• Limited liability companies with family protocols that have attempted to give them bylaw effectiveness through reference.
• LLCs with partners agreements formalized in a notarial deed but not fully incorporated into the bylaws.
• Companies that have configured ancillary services as an obligation to comply with an external document.
• Legal advisors and notaries who draft bylaws or elevate corporate resolutions to public of LLCs.
• LLC partners who rely on the parasocial agreement to protect them against third parties or serve as grounds for exclusion.
• Investors and funds that acquire shares in LLCs with partners agreements and need to know their actual effectiveness.

Practical example

A family business established as an LLC has a family protocol signed before a notary in which restrictions on the transfer of shares, partner dedication obligations, and grounds for exclusion are regulated. To give it full effectiveness against future partners, the shareholders' meeting approves modifying the bylaws to include an ancillary service that states: "Partners are obligated to comply at all times with the partners agreement formalized in public deed number X of the protocol of notary Y."

When the deed of elevation to public is submitted to the Commercial Registry, the registrar denies it. The reason: the ancillary service does not contain the specific content of the protocol, but merely refers to an external document. According to Article 86 LSC and the doctrine confirmed by this resolution, that reference is not valid.

The solution: the shareholders' meeting must meet again, reproduce in full in the bylaws the specific obligations that are to be imposed as ancillary services (for example, the prohibition on transferring shares without shareholder meeting consent, the obligation of exclusive dedication, etc.) and elevate the resolutions to public again. This involves new notarial, registry, and legal advisory costs.

What should companies do now?

1. Review current bylaws: check if any ancillary service is configured as a reference to a partners agreement, family protocol, or other external document. If so, that clause is not registrable or enforceable.
2. Identify what obligations you want to elevate to bylaw status: select from the partners agreement or family protocol the specific obligations that must have effectiveness against third parties and serve as grounds for exclusion.
3. Draft ancillary services with complete content: each obligation must be described in a specific and determined manner directly in the text of the bylaws, without reference to external documents.
4. Call a shareholders' meeting and elevate the resolutions to public: once correctly drafted, approve the bylaw modification at the shareholders' meeting and formalize the deed of elevation to public before a notary.
5. Submit to the Commercial Registry: with the bylaws correctly drafted, registration should not encounter obstacles for this reason.
6. Review the external partners agreement: the parasocial agreement may continue to exist as an obligational document between the signatories, but it must be clear that its effectiveness is limited to the parties that signed it, without enforceability against third parties or effectiveness as grounds for exclusion.

Official source

Consult complete regulation in official source

Notice: This article is for informational purposes only and does not constitute legal advice. For specific decisions, consult a qualified professional. Source: https://www.boe.es/diario_boe/txt.php?id=BOE-A-2026-21402