Short answer. Yes. Article 1806 requires partners to render, on demand, true and full information of all things affecting the partnership — to any partner, or to the legal representative of a deceased partner or one under legal disability. Information about the business is not something a managing partner can keep to himself; it is owed on request.
What the law says
Partners shall render on demand true and full information of all things affecting the partnership to any partner
Civil Code, Article 1806 — Duty of Full Information. Read the full provision →
Information is owed on demand
Article 1806 gives every partner a right to know what is going on in the firm. Partners shall render on demand true and full information of all things affecting the partnership to any partner. Three words carry the weight. The information must be true — accurate, not shaded or partial; it must be full — complete, not a selective account; and it is owed on demand — a partner is entitled to ask and to be answered, not left to find things out for himself.
What 'all things affecting the partnership' covers
The scope is broad by design: all things affecting the partnership. That reaches the accounts and financial records, contracts entered and offers received, dealings with the firm's property, transactions a managing partner has undertaken, and anything that bears on the value of a partner's interest or the conduct of the business. It is not limited to what a partner happens to ask about by name; a partner cannot withhold something material by pointing out he was not asked the precise question. The obligation to be full means volunteering what a fellow partner would obviously want to know, not just answering narrowly.
Who can demand it
The right is not confined to active partners. The article says the information is owed to any partner, but also to the legal representative of any deceased partner or of any partner under legal disability. So when a partner dies, his executor or administrator can demand the same true and full account on behalf of the estate; and where a partner is incapacitated, the person who represents him legally stands in his shoes for this purpose. This protects those who cannot ask for themselves. An heir's representative trying to value what the deceased partner left, or a guardian looking after an incapacitated partner's interest, is entitled to the firm's information just as the partner would have been.
Using the right
If you are being kept in the dark, this article is your basis for a demand. Make the request clear and in writing — what records or information you want and by when — because a documented demand both triggers the duty and creates a record if the partner stonewalls. If accurate, complete information is not forthcoming, that refusal is itself a breach of a partner's obligations and evidence of bad faith, and it can support stronger steps, including an accounting or, in a serious case, dissolution. The starting point, though, is simply that you are entitled to ask and to be told the truth in full.