If you need to formally notify someone in Argentina, of unpaid debt, a contract breach, an employment matter, or another dispute, this guide explains the carta documento, Argentina’s certified demand letter, how it works, what it’s used for, and what it can and can’t do on its own.
Whether it’s unpaid money, a breached contract, an employment dispute, or another matter, tell us what happened and who needs to be notified, and we’ll draft a carta documento that states your position clearly and holds up if the matter goes further.
A carta documento is Argentina’s certified demand letter, a formal notice sent through Correo Argentino (or another provider specifically authorised under ENACOM Resolution N° 3252/04) that carries legal, evidentiary weight. It is prepared in three identical copies, one for the sender, one delivered to the recipient, and one retained by the postal provider for a set period, and its delivery is tracked, with proof of receipt provided to the sender.
This is what makes it different from an ordinary letter or email: a carta documento creates fehaciente proof, reliable, provable evidence, of both what was said and that it was actually delivered. That combination is what gives it standing in civil, commercial, and labour matters in Argentina, and it’s why it’s the standard first step before many disputes escalate toward court.
A carta documento is a general-purpose instrument, not limited to any one type of dispute. Common uses include:
The sender needs to prove their identity (DNI or equivalent) to send a carta documento, and if it’s being sent on behalf of a company, proof of authority to represent that company is required as well. It can be prepared and sent at a Correo Argentino branch, or filed digitally through Correo Argentino’s official electronic system.
Delivery is tracked from dispatch to arrival, and the sender receives confirmation of the day and time it was delivered, along with the signature of whoever received it. Importantly, even if the recipient refuses to sign or isn’t present, the delivery attempt is still recorded and generally accepted as valid proof in legal proceedings.
Sending a carta documento often opens the door to a negotiated resolution, the other party frequently responds once they have a formal, documented demand in front of them. If it doesn’t resolve the matter, the carta documento itself becomes evidence: proof of what was demanded, when, and that it was properly delivered, which can support a future court claim.
A carta documento does not automatically decide a dispute in your favour. It documents your position and creates evidence, a judge weighs its content alongside everything else in the case. Treating it as a guaranteed win is a common and costly misunderstanding.
A carta documento copied from a generic online template, without the specific facts, amounts, dates, and legal basis of your actual situation, is far less effective than one drafted for your case. Vague or poorly identified parties, unclear demands, or an unreasonably aggressive tone can all undermine a claim that would otherwise be straightforward.
A carta documento that holds up states the objective clearly, sets out the relevant facts in order, and closes with a specific, concrete demand: what you want, by when, and what happens if it isn’t met. Given how much weight it can carry later, whether in negotiation or in court, it’s worth having it reviewed before it’s sent, particularly for anything beyond a straightforward, low-value matter.
María Laura Cristín | Argentine Attorney
This guide is reviewed by María Laura Cristín, an Argentine attorney admitted to practise before the Santa Fe Bar Association since 2015. She advises businesses and international clients on contracts, dispute resolution, debt recovery, employment matters, company formation, and commercial matters in Argentina. Her local qualification means demand letters are drafted to reflect current Argentine legal and procedural requirements, not general assumptions.
This article is general information, not legal advice. The right approach depends on the specific facts of your situation. For advice on your own matter, speak to a qualified Argentine attorney. Last updated: August 2026.
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