How to Formalize a Business Partnership Between Friends Without Putting the Friendship or the Business at Risk

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

Starting a business with a spouse, a sibling, or your best friend usually begins with enthusiasm and trust, but it often ends in conflicts that a simple document could have prevented. Informality among people who are close is the most common partnership mistake among small business owners in Brazil, and what looks like excessive formality at the start turns out to be the only real protection when the personal relationship and the business collide.

Why trust is not a substitute for a contract

Partnerships between relatives and friends grow out of an emotional bond, and that very bond is what leads the parties to skip written agreements. The usual thinking is that putting everything in writing would signal distrust. In practice, the opposite is true: the lack of clear rules is what turns small disagreements into disputes that can destroy both the company and the personal relationship.

The first legal point to understand is that business partners are, above all, contracting parties. Affection does not determine who put in the money, who does the day-to-day work, who is liable for debts, or who is entitled to what share of the profits. Without a document recording these points, each person’s memory prevails, and memories diverge precisely when the business succeeds or hits its first crisis.

Defining each partner’s stake is the starting point. An ownership interest is not the same thing as perceived effort, and it is not the same as who came up with the idea. It must expressly reflect how much each partner contributed in capital, assets, or labor, and what percentage that represents of the whole. This definition guides how profits are divided, how much voting power each partner has, and how much a partner will receive if he or she eventually decides to leave.

Defining ownership stakes and dividing responsibilities

A common mistake is to assume that ownership will always be split equally. Dividing the company into identical shares between two partners may seem fair, but it creates a permanent deadlock: when the two disagree, there is no majority to decide, and the business grinds to a halt. The better approach is to match each stake to what each partner actually contributes and to build in tie-breaking mechanisms from the outset, avoiding decision-making paralysis.

Just as important as setting percentages is defining roles. When each partner knows exactly what he or she is responsible for, decisions overlap less, and so does the feeling that one partner is working harder than the other. The division of tasks should be put in writing, with each partner’s duties, decision-making authority, and the spending limits each may assume without consulting the others.

Informality on this point usually comes at a high price. It is common for one partner to handle operations while the other handles finances, and for accusations of mismanagement or of decisions made without consensus to surface months later. Recording who decides what protects everyone, because it creates an objective yardstick for assessing responsibility and demanding results without turning the discussion into a personal matter.

It is also worth clearly separating the partner who only invests capital from the partner who works in the business. These are different legal situations, with different rights and duties, and treating them as the same creates unfairness on both sides. A partner who only invests cannot be held to the standard of someone running the business; a partner who only works cannot be paid solely out of profits that do not yet exist.

Rules for withdrawals and partner compensation

One of the biggest sources of conflict is taking money out of the company. Without rules, each partner tends to withdraw funds according to personal need, mixing the company’s cash with the household budget. This mixing drains the business of capital, breeds distrust, and in many cases amounts to an accounting and tax irregularity that makes those involved personally liable.

It is essential to distinguish three things that are often treated as one: the pró-labore (a salary-like payment to a partner for work done in the company), which pays the partner for his or her labor; the distribution of profits, which pays a return on invested capital; and the early withdrawal, which in practice works like a loan and must be repaid. Each has its own legal and tax nature, and confusing them exposes the company to tax assessments and the partners to claims against one another.

Withdrawal rules should set out how often withdrawals may be made, the amounts or the criteria for calculating them, and a requirement that profits be distributed only from results determined in a balance sheet. It is also prudent to provide that part of the profit be reinvested, building a reserve for slow periods. Settling this at the outset keeps the partners from draining the company’s cash in the first good year and having no cushion to get through the first bad one.

Alongside the money coming in, a partner’s departure needs its own rule. What happens if one partner wants to sell his or her share, becomes ill, dies, or simply loses interest? Without a provision, the family of a deceased partner can become partners overnight, or an outsider can take a position of control. A withdrawal clause and a method for determining the value of a partner’s stake prevent surprises of this kind.

Putting an agreement in writing does not show distrust between partners; it shows the maturity to protect both the business and the relationship that gave rise to it.

The determination of a departing partner’s share (apuração de haveres), meaning the calculation of what the departing partner’s stake is worth, is a technical matter that leads to long court disputes when the contract does not address it. The contract can set the valuation criteria, the deadline, and the method of payment, preventing one partner’s exit from bankrupting the company by requiring an immediate payout the company’s cash cannot support.

The articles of organization and the partners’ agreement from day one

Two documents govern the life of a partnership, and they serve different purposes. The contrato social (the company’s articles of organization) is the founding instrument, filed with the Junta Comercial (the state commercial registry), that gives the company its legal existence and defines its business purpose, capital, and basic structure. The acordo de sócios (partners’ agreement) is a complementary pact, generally not filed, that details the relationship among the individuals and addresses sensitive issues in far greater depth.

The partners’ agreement is where governance rules take shape: how decisions are made, which matters require unanimity, how a deadlock is resolved when there is no majority, and what happens in the event of a serious conflict. It is also where protective clauses are set out, such as one that bars the sale of a stake to third parties without first offering it to the other partners, and one that deals with the exit of a partner who stops contributing.

Conflict-resolution mechanisms deserve special attention. Clauses governing forced buy-sell arrangements, the right to join in a sale made by another partner (tag-along rights), and mediation before going to court reduce the risk that a disagreement will turn into a drawn-out lawsuit. The sooner these points are agreed on, the less resistance there is to accepting them, because no one is in conflict yet.

The ideal time to formalize all of this is at the start, when the relationship is good and interests are still aligned. Trying to negotiate rules after a problem has arisen is much harder, because each side already sees the proposal through the lens of its own loss. A well-structured partnership is not one that will never have conflict, but one that has, in writing, a path to resolve it without destroying what was built.

Frequently Asked Questions

Is a partners’ agreement mandatory, or is the articles of organization enough?

The contrato social (articles of organization) is mandatory to form the company and register it with the Junta Comercial, but it covers only the basic structure of the partnership. A partners’ agreement is not required by law, and that is precisely why many people skip it. Even so, it is the document that prevents the most serious conflicts, because it details profit withdrawals, partner exits, deadlock resolution, and protection against outsiders coming in. In partnerships between people who are close, doing without one means giving up the main safeguard for the relationship.

How should ownership be divided when one partner contributes money and the other contributes work?

There is no single correct percentage, but there is a correct method: record in writing the value assigned to each contribution. Invested capital and contributed labor are different in nature and must be treated as such in the contract. It is possible to set different ownership stakes, provide specific compensation for the partner who runs the business, and adjust the profit split to the reality of each contribution. What matters is that this valuation be made and formalized at the start, so that subjective perceptions of effort do not become a source of dispute later.

What happens if one of the partners wants to leave the company?

It depends on what the contract provides. With a clear withdrawal rule, the contract defines how the value of the stake is calculated, how long payment will take, and how it will be made, protecting both the company’s cash and the departing partner’s rights. Without a rule, the exit usually ends up in a court dispute over the determination of the partner’s share, with appraisal reports, expert examinations, and years of litigation. Without a provision, a partner may also transfer his or her share to a third party, or the partner’s heirs may take over the position, changing control of the business in unexpected ways.

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