Shareholder Agreements: Essential Clauses to Prevent Disputes Among Business Partners

This page is a translation of the original Portuguese text, provided for convenience. It deals with Brazilian law. If there is any discrepancy, the Portuguese version prevails. Read the original in Portuguese

A shareholder agreement sets out, before any conflict arises, how decisions will be made, how profits will be divided, and how each participant can leave the company. Putting one in place when the company is formed keeps foreseeable disagreements from turning into lawsuits that can paralyze the business.

What a shareholder agreement is and why it anticipates conflict

A shareholder agreement (acordo de sócios) is also called a quotaholder agreement in limited liability companies (sociedades limitadas) and a stockholder agreement in corporations (sociedades anônimas). It is a side agreement, separate from the company’s governing documents, signed by the holders of the company’s capital. It supplements the articles of organization or the bylaws by regulating matters that the law leaves to the discretion of the parties. Its main purpose is not to settle fights but to prevent them, by fixing clear rules while the people involved still get along.

Courtroom experience shows that most disputes among business partners begin with omissions. Partners who launch a venture relying only on friendship or family ties rarely plan for disagreement, death, divorce, or loss of interest. When those events arrive, the lack of prior rules turns operational questions into long, costly court battles.

For that reason, the ideal time to negotiate the agreement is when the company is formed, when no one yet has a reason to resist balanced clauses. Negotiating exit or deadlock rules after the relationship has soured is usually unworkable, because each side already sees the other as an adversary.

Governance and profit distribution clauses

Governance is the heart of the agreement. This is where you set the quorum for important decisions, distinguishing ordinary decisions, which follow the majority, from structural decisions, which may require unanimity or a supermajority. Acquiring major assets, taking on debt, changing the company’s corporate purpose, and admitting new partners are examples of matters that deserve reinforced protection so that a minority partner is not steamrolled.

The agreement also organizes management: who serves as manager, what powers that person has, how partners who work in the company are paid, and how the pró-labore (a salary-like payment to partners who work in the business) is separated from the share of profits. This distinction is vital, because mixing the manager’s pay with the investor’s dividend is a recurring source of resentment.

For profit distribution, the default rule under the law is proportion to each partner’s quotas, but the parties may agree to a disproportionate distribution, provided legal and tax limits are respected. The agreement should spell out how often payments are made, the reinvestment policy, and the treatment of retained earnings, so that a partner who needs liquidity does not end up on a collision course with one who prefers to build up the company’s capital.

One often neglected point is the obligation to contribute additional capital in the future. If the business needs more capital, the agreement should say who contributes, on what terms, and what happens to anyone who does not answer the capital call, so that automatic dilution does not produce unwelcome surprises.

Resolving deadlocks, right of first refusal, and partner exits

A deadlock occurs when the partners split evenly and no decision can be made. In companies with two equal partners, this risk is permanent. A good agreement provides tiebreaking mechanisms, such as prior mediation, naming a third party with a casting vote on specific issues, or reciprocal buy-sell clauses.

Among the most common mechanisms is the so-called buy or sell clause, in which one partner offers a price per quota and the other chooses either to sell their own stake at that price or to buy the offering partner’s stake at the same price. This design discourages predatory offers, because the partner who sets the price may end up forced to sell at it.

The right of first refusal protects the original makeup of the ownership group. Under it, a partner who wants to sell their quotas must first offer them to the other partners, on the same terms negotiated with the interested third party. This keeps unwanted outsiders out and preserves the balance of power established at the start.

Partner exits deserve a chapter of their own. The agreement should govern voluntary withdrawal, expulsion for just cause, and involuntary events such as death and incapacity. In each case, it is important to define how the departing partner’s stake is valued (apuração de haveres), that is, how to calculate the amount to be paid to the person leaving.

The choice among book value, market value, or discounted cash flow changes the financial result dramatically. Setting the method, the payment schedule, and any discount in the agreement itself avoids the endless expert appraisal that tends to dominate partial dissolution lawsuits.

Complementary clauses strengthen the stability of the business. A non-compete clause keeps a departing partner from taking clients and strategic knowledge along. A tag along right guarantees the minority partner the right to sell on the same terms as the controlling partner. A drag along right allows the majority to carry out a sale of the entire company when a buyer emerges for all of the capital.

Those who set exit rules at the founding buy predictability; those who leave it for later buy litigation.

It is worth remembering that succession-related clauses also shape how a company is structured. In family businesses, coordinating the shareholder agreement with succession planning and, where appropriate, a holding company reduces disputes among heirs and protects the continuity of the business across generations.

How to structure the agreement from the moment the company is formed

The strategic recommendation is to treat the agreement as an integral part of the company’s birth, not as an add-on document to be drafted later. With legal support, the entrepreneur should map the tension scenarios typical of their industry and turn each one into an objective rule.

The first step is to align expectations: how much each partner contributes, who works in the business day to day, and how to measure the contribution of those who bring capital versus those who bring labor. Put in writing, this alignment clears up misunderstandings that would otherwise surface only years later.

Next, you define the decision-making structure, the profit policy, and the exit and deadlock mechanisms. The agreement should also provide for how conflicts will be resolved, with arbitration often preferred for its confidentiality and speed compared with ordinary court proceedings.

Finally, the document needs periodic review. A company that grows, raises outside investment, or changes its corporate purpose needs its clauses updated. A living agreement, backed by specialized counsel, is what separates the companies that get through crises from those that fall apart at the first significant disagreement.

Frequently Asked Questions

Is a shareholder agreement required to open a company?

No. The law requires only the articles of organization (contrato social) for a limited liability company, or the bylaws for a corporation. A shareholder agreement is optional but highly advisable, because it regulates matters that the founding documents usually leave open, such as deadlocks, exit criteria, and profit policy. Without one, the company can still operate, but the risk of litigation rises when disagreements arise among the participants.

What is the difference between a shareholder agreement and the articles of organization?

The articles of organization are the public document that creates the limited liability company and is filed with the commercial registry (junta comercial), setting out details such as capital, corporate purpose, and managers. The shareholder agreement is a separate pact, generally kept private, that details the relationship among the holders of the capital. While the articles of organization are institutional in nature and enforceable against third parties, the agreement governs the internal, private sphere of the partners, with more detailed rules on governance and exit.

Is it possible to expel a partner on the basis of the agreement?

Yes, as long as the agreement and the articles of organization provide for the grounds and procedure for expulsion, and just cause is present, such as a breach of the duty of loyalty or acts that put the company at risk. Expulsion must respect the partner’s right to defend themselves and the proper valuation of their stake. In two-person companies, out-of-court expulsion faces legal limits, so it is prudent to address the subject in a specific clause to reduce the chance of a later court challenge.

As informações deste artigo são de caráter informativo e não substituem consulta jurídica individualizada. Cada caso possui particularidades que exigem análise específica.