Livro de Atas
Book of Minutes
The official record where a Portuguese company logs the decisions of its owners. Every company must keep one, including a single-owner Unipessoal Lda. It can be a physical book or a digital one, and it is the legal proof that a decision was actually made.
The livro de atas (book of minutes) is where a Portuguese company keeps a written record of the decisions its owners make. It is the company's memory: when you approve the year's accounts, decide what to do with the profit, change the manager, or move the company's registered address, the decision is written up as an ata and stored in this book.
It exists for one reason: proof. Under Article 63 of the Código das Sociedades Comerciais (CSC), a decision by the owners only counts as properly made if there is an ata recording it. No ata, no proof.
Who needs one
Every commercial company, with no exceptions. That includes the smallest, simplest case: a single-owner Unipessoal Lda. People often assume a one-person company is exempt ("who would I hold a meeting with?"), but the law treats the sole owner's decisions the same way. You still record them, the meeting step just disappears.
What goes in it
The decisions that the owners (the sócios) take, known formally as deliberações dos sócios. For a small company these are mostly predictable and repeat each year:
- Approval of the annual accounts (aprovação de contas), due by 31 March each year. This one is mandatory, every year.
- What to do with the profit (aplicação de resultados): distribute it as dividends, or hold it in the company.
- The manager and their pay: appointing a gerente, and deciding whether they take a salary or serve unpaid.
- Structural changes: a new registered address, a change of company name, a capital increase, adding a partner.
Physical or digital
Both are allowed. The traditional form is a bound paper book with numbered pages. The modern form is electronic, and it is fully legal: the book can be kept digitally as long as each ata carries a qualified electronic signature (assinatura eletrónica qualificada). Portugal's free Chave Móvel Digital (CMD) produces a qualified signature, so a CMD-signed ata has the same legal weight as a signed page in a paper book.
How it differs from your tax filings
The livro de atas is about company decisions, not tax. It is separate from your IRC and VAT filings and from the RCBE ownership register. Your contabilista certificado will often draft the recurring atas (the accounts approval especially) because they tie into the year-end accounts, but keeping the record itself is the company's own responsibility.
Frequently asked questions
Is a livro de atas mandatory in Portugal?
Yes. Article 63 of the Código das Sociedades Comerciais (CSC) requires every commercial company to record its owners' decisions as minutes (atas), and those minutes are the legal proof that a decision was made. There are no exceptions: a single-owner Unipessoal Lda must keep one too, even though there is only one person making the decisions.
Does a one-person company (Unipessoal Lda) really need a book of minutes?
Yes. In a Unipessoal Lda the sole owner takes the decisions that a shareholders' meeting would normally take, and those decisions still have to be written down and recorded. The form is simpler (there is no meeting to convene), but the record is not optional.
Can the livro de atas be digital?
Yes. The book can be kept electronically rather than as a bound paper book. The condition is that each ata is signed with a qualified electronic signature (assinatura eletrónica qualificada), and in Portugal the free government Chave Móvel Digital (CMD) produces exactly that kind of signature. A digital ata signed this way has the same legal value as a signed paper one.
What happens if I don't keep one?
Decisions you can't prove with an ata can be challenged, and the Conservatória do Registo Comercial can refuse to register acts (like a change of manager or company seat) when the supporting ata is missing. The annual approval of accounts is itself a mandatory ata, so the book is something you feed every year, not a one-off.
Related terms
A written record of a single company decision, such as approving the accounts or distributing profit. Atas are stored in the company's livro de atas and are the legal proof that the decision was made.
Deliberação dos SóciosShareholders' DecisionA formal decision taken by a company's owners, such as approving the accounts or distributing profit. The decision is recorded in an ata, which is its legal proof.
GerenteManaging DirectorThe person who manages a Portuguese Lda and represents it legally. Their appointment and pay are decided by the owners and recorded in an ata. Even an unpaid gerente triggers a minimum Social Security contribution.
Contabilista CertificadoCertified AccountantA certified accountant registered with the Ordem dos Contabilistas Certificados (OCC). Required by law for companies and for sole proprietors on the normal regime, but not for the simplified regime.
RCBERegisto Central do Beneficiário Efetivo · Central Register of Beneficial OwnersPortugal's central register of beneficial owners, part of EU anti-money-laundering rules. Every company must declare who ultimately owns and controls it, confirm it once a year by 31 December, and update it within 30 days of any change. Fines run from 1,000 to 50,000 euros.