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How to allocate equity among founders without causing problems in the future

LetsLaw / Commercial Law  / How to allocate equity among founders without causing problems in the future
Como repartir equity entre fundadores

How to allocate equity among founders without causing problems in the future

Allocating equity among the founders of a start-up is one of the most sensitive and crucial decisions in the early stages of any project. Although at the start everything is usually driven by excitement, mutual trust and the dream of building something great, the reality is that a poor distribution of shares can become a source of conflict, deadlock and resentment as the company begins to grow. For this reason, this distribution should not be rushed, nor should it be based on intuition, and certainly not to avoid an awkward conversation.

One of the most common mistakes is to divide the equity equally without really analysing what each founder brings to the table. The logic seems simple: if everyone is starting out together, everyone should have an equal share. However, in practice, not everyone always takes on the same level of risk, invests the same amount of time, or contributes skills that are equally critical to the business. Some leave a stable job to devote themselves entirely to the project, others bring technical expertise essential for building the product, some secure the first customers, and others even put in their own capital at a time of maximum uncertainty. Treating all these contributions as if they were identical may seem fair at first, but over time it often creates tensions.

The allocation of equity should stem from an honest discussion about four key factors: commitment, contribution, risk and vision for the future. Commitment relates to the actual dedication of each founder. Someone who works full-time from day one is not the same as someone who contributes on a part-time basis whilst maintaining other priorities. Contribution refers to the specific value each person brings to the table, whether in the form of a product, sales, strategy, network of contacts or leadership. Risk encompasses both the financial cost and the personal and professional costs that each person assumes. And vision for the future requires thinking not only about what each founder has done to date, but also what they will do over the coming years.

Often, conflict does not arise at the time of signing, but months later, when the start-up enters a more demanding phase and the initial share allocation no longer reflects the reality of the effort involved. It is at this point that some founders feel they are carrying the project on their shoulders, whilst others retain a stake that is disproportionately high given their level of involvement. To avoid this scenario, one of the most important tools is vesting. This mechanism allows equity to vest over time, rather than being granted in full from the outset. It is common practice to set a four-year period with a minimum one-year retention requirement. This means that if a founder leaves before completing that first year, they do not vest their share. From then on, the equity is acquired progressively.

Vesting protects not only the company but also the other founders. It prevents someone who leaves the project too early from retaining a significant stake without having made a sustained contribution. In the start-up ecosystem, where change is constant and uncertainty is high, this protection is essential. A poorly designed cap table can scare off investors, hinder strategic decision-making and create governance issues just when the company needs to be at its most agile.

Another key point is to put all agreements in writing. Relying on a good personal relationship is not enough. In fact, many start-ups that begin as ventures between friends end up facing conflicts precisely because they never clearly discussed expectations, responsibilities and exit scenarios. A well-drafted shareholders’ agreement is not a sign of mistrust, but of maturity. It serves to establish what percentage each founder holds, what roles they take on, what happens if someone leaves, how certain key decisions are made, and how future hires or capital increases are managed. The clearer everything is from the outset, the less room there will be for self-serving interpretations later on.

It is also worth bearing in mind that the initial equity structure will not be the final one. If the start-up progresses, investors are likely to come on board and there will be dilution. Furthermore, it may be necessary to set aside a portion to attract key talent through share option schemes. For this reason, the distribution among founders should not be viewed as a static snapshot, but rather as the first step within a structure that will evolve as the company grows. A distribution that is too rigid or lacking in strategy can complicate future funding rounds and reduce flexibility at crucial moments.

Ultimately, allocating equity isn’t just a financial matter. It’s a conversation about power, commitment, recognition and shared ambition. That’s why it must be approached with transparency and realism. It’s not about finding a perfect formula – because every start-up has a different story – but about building an agreement that everyone considers reasonable and sustainable over time. The important thing isn’t to avoid a difficult conversation, but to have it properly and in good time.

Start-ups don’t usually fail because of a mediocre idea, but because of disagreements among the people who build them. And many of those disagreements stem from a poorly thought-out distribution of shares in the early days, when it seemed as though everything was going to be straightforward. Taking this decision seriously from the outset is a way of protecting the relationship between founders, strengthening the company and increasing the chances of long-term success.

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