Shareholder disputes can begin almost silently. First, the partner stops responding. Then, they miss a meeting. Later, they block decisions, fail to deliver on promises, or use the company as a battleground. And the question arises, often urgently: I have a partner who is not fulfilling their obligations, how can I remove them?

The reality is that “removing a partner” isn't a simple button. In Portugal, it depends on the type of company, the company agreement (articles of association), what's written in a shareholders' agreement, and, above all, what you can prove regarding the breach of contract. However, there are concrete legal avenues to resolve the problem, ranging from negotiated solutions to partner exclusion, share buy-backs, the purchase of participation, and, in certain cases, judicial intervention.

In this article, we explain what counts as relevant non-compliance, the most effective ways to remove a partner who is not complying, and how to choose the strategy that protects the company, its assets, and your peace of mind.

In practice, what does “a partner who doesn't fulfil their obligations” mean?

Not all disputes between partners justify drastic measures. Discussions about strategy, differences of opinion, or periods of lower availability are not, in themselves, grounds for removing someone.

When we talk about a partner who doesn't comply, we are generally referring to conduct that breaches corporate duties or assumed obligations. The most common examples are:

• Failure to make committed capital contributions.
• Breach of the duty of loyalty, such as diverting clients, competing via the side door, or using company information for personal gain.
• Systematic blocking of management, with abusive votes or refusal to sign essential acts.
• Lack of accountability when exercising management functions, or misuse of funds.
• Failure to perform ancillary obligations (e.g., work, supply, exclusivity obligations), where they exist and have been provided for.

The first question that changes everything: what kind of society is it?

The way a partner is removed varies greatly depending on the structure. In limited liability companies (sociedades por quotas), the personal bond between partners tends to be stronger, and the law provides typical mechanisms such as exclusion and amortisation of quotas.

In public limited companies, capital is “in shares” and the logic is more asset-based. Typically, it is easier to remove someone from management than to “expel” them as a shareholder. In these cases, the solution often involves the buying and selling of shares, and agreement clauses. parasocial, or a reorganisation of power.

If you are unsure of the type of company, start by confirming the company contract and the permanent certificate. That detail changes the strategy.

Before tackling the problem: the trio that runs the game

There are three documents that determine what you can do, how fast and with what risks.

1. Deed of Partnership (Articles of Association) That's where clauses on share amortization, transfer rules, consents, and reinforced majorities might be.
2. Shareholders' agreement When it exists and is well done, it is often the quickest way to resolve impasses and force an exit with rules on price, deadlines and penalties. If you don't have one yet, it's worth understanding how it works: Shareholders' Agreement.
3. Test: Emails, messages, minutes, budgets, evidence of client diversion, statements, invoices, account access, records of blocked decisions. In disputes between partners, the proof isn't a detail, it's the difference between winning and being stuck in a stalemate.

Strategies for removing a partner who is not fulfilling their obligations, without destroying the company

Before resorting to “tough” legal avenues, it's worth stating the obvious: the best solution is one that resolves the problem while keeping the company alive.

Many situations end up being resolved by one of these avenues, when well-managed:

• Buying shares or stock, with phased payments and guarantees.
• Transfer of the shareholding to another partner or to a third party, respecting pre-emption rights and consents.
• Amortisation of the instalment, if the contract and the law permit.

These solutions have a major advantage: they reduce uncertainty, cut down on conflict, and avoid years in court. The secret lies in structuring the price, deadlines, warranties, and a clean closing, with commercial registry and discharge.

To see a complete overview of the ways a partner can exit, including assignment, buy-out and exclusion, you can also read: Exit of a Partner from a Limited Liability Company.

Limited liability companies: the most common legal avenues when a partner defaults

If your company is a limited liability company, there are legal and practical mechanisms that usually form the backbone of the solution. The right path depends on what is set out in the articles of association, the type of breach, and the urgency.

1) Removal of management (when the problem lies with who is managing)

A common misunderstanding is to treat “partner” and “manager” as if they were the same thing. They are not always.

If the partner who fails to comply is also a director, it may be possible to remove them from their directorship by resolution of the general meeting. This does not automatically remove them from the partnership, but it takes the steering wheel away from them.

In practice, this is often the first step to protect the company, as it cuts off access to accounts, contracts, and executive decisions. Then, once the company is stabilised, an exit is negotiated or exclusion/amortisation mechanisms are put in place.

2) Assignment of shares: remove the problem from the structure

The assignment of shares is the classic solution when there is room for negotiation.

This can involve

• The defaulting partner sells their share to another partner.
• Sell to a third party, if the articles of association permit and if there is consent when required.

The care here is to avoid two pitfalls: unrealistic prices and deadlines without guarantees. Many companies get stuck because there's a verbal agreement, and when it's time to formalise and register, everything goes back on track.

3) Amortisation of shares: when the company extinguishes the shareholding

Amortisation is a very effective method when it is provided for in the company's articles of association and when there is a fact that allows it. In simple terms, the company extinguishes the share, paying the shareholder the amount owed under the applicable terms.

As it is a powerful tool, it demands rigour: valid grounds, correct deliberation, adherence to evaluation rules and registration formalities.

If you are considering this route, it is advisable to check that the statutes are up to date and cover relevant situations. To understand when it makes sense to review statutes and how to avoid typical errors, see: Update your Company's Articles of Association.

4) Exclusion of a partner

The exclusion of a partner is the route many seek when asking how to remove a partner who is not fulfilling their obligations.

In a limited company, exclusion can arise in two typical scenarios:

• Deliberate exclusion, when there are legal or contractual grounds and when the required procedure and majorities are respected.
• Judicial exclusion, when it is necessary to go to court to obtain a decision to remove a partner, especially in cases of disloyal behaviour or behaviour that severely disrupts the company's operations.

The essential point is to understand that exclusion isn't a punishment for punishment's sake. It's a response to serious behaviour, with a real impact on society.

The deciding point of success: proof and chronology

In corporate litigation, whoever arrives first with organised proof gains a huge advantage. There is a simple method that usually works:

• Timeline with dates and facts.
• Folders by topic: financial non-compliance, deliberation blockages, client diversion, misuse of resources.
• Agendas and calls for meetings.
• Bank and accounting records, when relevant and legally obtained.
• Internal and external witnesses, with concrete facts.

The more “surgical” the case, the easier it is to negotiate or sustain a claim in court.

What if the partner is causing immediate damage?

There are situations where waiting for a meeting or a slow legal action is a luxury the company cannot afford.

When there is a risk of asset dissipation, client diversion, destruction of evidence, or critical blockage, it may make sense to consider urgent measures and containment strategies, such as:

• Immediate changes to powers and access, when legally possible.
• Deliberations to limit management actions.
• Urgent legal measures, when there is danger in delay.

This type of response requires careful analysis, because the objective is not to “escalate” but to prevent the damage from increasing.

When a partner leaves and it's not enough: restructuring, recovery or exit from the business itself

It's not always just the presence of the defaulting partner that's the problem. Sometimes the conflict exposes weaknesses: an undercapitalised company, debts, poorly drafted contracts, reliance on one client, or confusion between personal and company accounts.

In these cases, it may be necessary to combine the corporate strategy with a recovery strategy.

If a company is under financial stress, it is worth knowing about options such as insolvency prevention and restructuring mechanisms, such as the Special Revitalisation Process (PER) or analysis of warning signs in Technical Bankruptcy.

The most expensive mistake: trying to “solve it yourself” with informal decisions

It's tempting to make agreements via WhatsApp and move on. The problem is that, in societies, what is not formalised and recorded may not legally exist.

There are three errors that appear repeatedly:

• Deliberations without notice and without proper minutes.
• Exit agreements without clear valuation calculations and without guarantees.
• Mixing the removal of a business partner with retaliation, creating a risk of parallel lawsuits.

A dispute between partners is a game of consequences. The exit needs to be clean, defensible and, ideally, swift.

Conclusion

The best way to move forward begins with three steps: understanding the specific breach, confirming what the statutes and any shareholders' agreement permit, and methodically organising the evidence before the conflict escalates.

In limited liability companies (sociedades por quotas), it is common to combine immediate protective measures, the removal from management roles, and an exit route which can involve assignment, redemption, or exclusion. The objective is not to win an argument. It is to protect the company, reduce risk, and regain decision-making capacity.

If you want a quick assessment of your case and a strategy that avoids missteps, speak to a Solicitor.