Settlement (transacción): what it is and what effects it has (articles 1809 to 1819 of the Civil Code)

What a transacción (settlement contract) is under article 1809 of the Civil Code: avoiding or ending litigation, res judicata and limits.

The transacción (settlement contract) is the contract by which the parties end a dispute through reciprocal concessions. It is, alongside mediation and arbitration, one of the great channels for the out-of-court resolution of conflicts, and its legal regime in Spain is found in articles 1809 to 1819 of the Civil Code, in a short chapter that the courts have applied consistently since 1889.

The definition in article 1809 remains the reference:

"A transacción is a contract by which the parties, each giving, promising or retaining some thing, avoid the initiation of litigation or put an end to litigation already begun."

The definition contains its three essential features. It is a contract (it requires consent and a lawful object), it involves reciprocal sacrifices (each party gives, promises or retains something) and it pursues a pacifying purpose: avoiding future litigation or ending litigation already started. If the reciprocity of concessions is missing, we are before another figure: a waiver, a novation or a giving in payment, but not a transacción.

Capacity and excluded matters

The Code subjects the capacity to settle to special rules where the interests of others are at stake. To settle over the assets and rights of children under parental authority, the same rules apply as for alienating them (article 1810, as worded by Law 11/1981). The guardian and the curator with powers of representation need judicial authorisation to settle on matters relating to the interests of the person they represent, except in matters of little economic relevance (article 1811, as in force since the Law 8/2021 reform). And corporations with legal personality may only settle in the form and with the requirements they need to alienate their assets (article 1812).

There are matters on which settlement is directly impermissible. Article 1814 is categorical: "No settlement is possible on the civil status of persons, nor on matrimonial questions, nor on future maintenance." Civil status is not disposable, matrimonial questions are withdrawn from agreement, and future maintenance (because of its link to vital needs) admits no advance waiver. The criminal plane is different: article 1813 permits settling "on the civil action arising from a crime; but the public action for the imposition of the legal penalty shall not thereby be extinguished". The damage caused by the crime can be liquidated civilly; impunity cannot be agreed.

Scope: only what is expressly covered

Article 1815 sets the rule of restrictive interpretation of the settlement: "The transacción comprises only the objects determinately expressed in it, or those which, by a necessary inference from its words, must be deemed comprised in it." And it concludes: "A general waiver of rights is understood only of those related to the dispute on which the settlement has been made." Care in drafting is therefore the first practical rule: a general waiver clause does not sweep in rights foreign to the settled conflict, but a careless drafting may leave out (or include) more than the party intended.

The force of res judicata

The settlement's most powerful effect is proclaimed by article 1816: "The transacción has for the parties the authority of res judicata; but the enforcement route shall only be available in respect of compliance with the judicial settlement." Two consequences. The first, of stability: what has been settled cannot be litigated again between the same parties; the settlement closes the conflict with the same force as a final judgment. The second, of execution: only the judicial settlement (the one made before the court in the course of the litigation) by itself enables the direct enforcement route, so the breach of an extrajudicial settlement recorded in a private document generally requires a prior declaratory action. This changes if the agreement is formalised in a public deed: agreements ending an out-of-court dispute resolution procedure that are elevated to a public deed, and public deeds in the terms provided by law, are enforceable titles under article 517.2(2) and (4) of the Civil Procedure Act. This distinction is one of the most relevant practical questions when deciding where and how the agreement is formalised.

Defects and limits to annulment

Like every contract, the settlement can be vitiated. Article 1817 subjects it to the general rule on defects of consent: "A settlement in which error, fraud, violence or falsity of documents intervenes is subject to the provisions of article 1265 of this Code." But it adds a characteristic limitation, consistent with its pacifying function: "However, one of the parties may not set up mistake of fact against the other whenever the latter has, by reason of the settlement, withdrawn from litigation already begun." Whoever abandoned litigation in reliance on the settlement deserves that the other party's error not destabilise it. In the same line, article 1818 provides that "the discovery of new documents is not a ground for annulling or rescinding the settlement, unless there has been bad faith": the later appearance of evidence does not reopen what was closed, absent deceit.

What the transacción is not

The boundary with neighbouring figures matters because the effects change. The transacción requires reciprocal concessions: if one party waives its claim without receiving anything in return, there is a waiver, not a settlement, and the restrictive rule of article 1815 does not govern. If the parties replace the disputed obligation with a new one, the figure may be novation or giving in payment, with their own regimes. The doctrine of article 1809 ("each giving, promising or retaining some thing") is the touchstone: the reciprocity of the sacrifice is what turns the agreement into a settlement and what justifies its stabilising force.

Extrajudicial or judicial: a decision with enforcement effects

The Code requires no specific form for the civil settlement: a private agreement suffices, although proof advises documenting it in writing. The relevant practical choice is another. The extrajudicial settlement binds as a contract and closes the conflict with res judicata authority between the parties, but if it is breached, a declaratory action will generally be needed to obtain an enforceable title, unless the agreement has been elevated to a public deed in the terms of article 517.2 of the Civil Procedure Act. The judicial settlement (the one reached before the court within the litigation) shares both effects and, in addition, enables the direct enforcement route for its compliance, under article 1816 itself. In ongoing litigation, therefore, formalisation before the court is not a ceremony: it is the difference between enforcing and suing again.

Settlement and arbitration agreement

The title used to close with the connection between settlement and arbitration: chapter II, "On arbitration agreements" (compromisos), declared in its article 1820 that the same persons who may settle may entrust the decision of their disputes to a third party, and its article 1821 applied the provisions on settlements to arbitration agreements. That chapter was left without content by the repealing provision of Arbitration Law 36/1988, of 5 December, so articles 1820 and 1821 contain no rule in force today, and arbitration is governed by its special legislation, currently Arbitration Law 60/2003, of 23 December. The logic of the system, in any case, remains unitary: whoever has the power to dispose of a conflict by agreement also has it to submit it to a deciding third party.

A well-closed settlement is often the best possible outcome of a conflict: it eliminates the risk of an adverse judgment, the cost of the process and the wear of time in exchange for a partial and measured waiver by both parties.

In practice

The settlement is the instrument with which most civil and commercial conflicts are closed before judgment. Its drafting requires care on three fronts: precisely delimiting the object (which claims are extinguished), providing for the compliance and guarantee mechanism, and deciding whether the enforcement force of the judicial settlement is wanted or the private agreement suffices. Knowing its limits (civil status, matrimonial questions, future maintenance, the public criminal action) avoids void pacts that leave the conflict open when it was believed closed.

Frequently asked questions

Does a settlement have res judicata force?

Yes, between the parties (art. 1816 CC). But the direct enforcement route is only available for compliance with the judicial settlement; an extrajudicial settlement elevated to a public deed may be an enforceable title under the terms of art. 517.2 of the Civil Procedure Act.

On what matters is settlement not possible?

On the civil status of persons, matrimonial questions and future maintenance (art. 1814 CC). Nor does a settlement extinguish the public criminal action (art. 1813 CC).

Can a settlement be annulled for error?

In principle yes, for error, fraud, violence or documentary falsity (arts. 1817 and 1265 CC); but mistake of fact cannot be set up against the party who withdrew from litigation already begun because of the settlement.