Can Extradition Be Refused if the Offense Has Already Become Time-Barred in Spain?

QUICK ANSWER

Yes. Extradition must be refused when criminal liability has been extinguished under Spanish law, regardless of whether the requesting State considers the criminal action still alive under its own legal system. This is required by Article 4.4.º of Law 4/1985, on Passive Extradition, and by Article 10 of the 1957 European Convention on Extradition. The practical obstacle is not the rule itself but the computation: the extradition request itself interrupts the running of the statute of limitations, so the defense must prove that the term under Article 131 of the Criminal Code had already expired before the requesting State activated the cooperation mechanism.

Key points

• The Spanish statute of limitations is a mandatory, not discretionary, ground for refusal, and it is enough that it applies under either one of the two legal systems.
• Spain has not ratified the Fourth Additional Protocol to the European Convention on Extradition, which would have removed this ground for refusal.
• The extradition request does interrupt the statute of limitations; a mere arrest warrant does not.
• A statute of limitations already accrued does not revive through the later entry into force of a stricter treaty.
• The applicable term is that of the equivalent Spanish offense, not that of the requesting State.

1. What does — and does not — the Audiencia Nacional examine in an extradition case?

It is worth establishing the ground before discussing time limits, because the first misconception held by the requested person and much of their family circle is to believe that extradition proceedings are an early trial on the facts.

They are not. The Criminal Chamber of the Audiencia Nacional does not examine whether the requested person committed the conduct attributed to them, nor does it weigh the evidence gathered by the requesting State, nor does it assess the strength of the account contained in the international arrest warrant. Its function is limited to verifying that the requirements which the applicable treaty — or, failing that, Law 4/1985 — establishes as conditions for surrender are met, so that the proceedings are configured, according to the well-known characterization by the Constitutional Court, as a proceeding about a criminal proceeding previously initiated in another State, and even already concluded, lacking only the execution of the sentence (STC 191/2009, of 28 September).

From that strictly verifying nature follows the strategic consequence that governs every extradition defense: acquittal is not fought for before the Audiencia Nacional; what is fought for is that none of the requirements for surrender is met. And among them, the statute of limitations is the one that has closed the most cases without needing to discuss a single fact.

2. Does the statute of limitations on the offense in Spain bar extradition?

2.1. Article 4.4.º of Law 4/1985

The Passive Extradition Act lists in its fourth article the mandatory — not discretionary — grounds for refusing surrender. The fourth of them is categorical:

«No se concederá la extradición en los casos siguientes: (…) 4.º Cuando se haya extinguido la responsabilidad criminal, conforme a la legislación española o la del Estado requirente.» (Extradition shall not be granted in the following cases: (…) 4. When criminal liability has been extinguished, under either Spanish legislation or that of the requesting State.)

Note the disjunctive wording. The provision does not require that liability be extinguished under both legal systems, but under either of the two. It is therefore enough that the offense has become time-barred under Articles 130.6.º and 131 of the Spanish Criminal Code for refusal to be mandatory, however much the criminal action remains fully alive in the requesting State.

2.2. Article 10 of the European Convention on Extradition

The European Convention on Extradition, done at Paris on 13 December 1957 and ratified by Spain by Instrument of 21 April 1982, contains a rule to the same effect: extradition shall not be granted where the prosecution or the penalty has become time-barred under the law of the requesting Party or of the requested Party.

Being an international treaty, it displaces Law 4/1985, which applies only in a supplementary capacity for matters not covered by the treaty (Article 1 of the Law itself). The material result, however, is the same: the Spanish statute of limitations is, by itself, a ground for refusal.

2.3. Why it matters that the statute of limitations is a substantive institution

That the statute of limitations has a substantive rather than merely procedural nature — settled doctrine of the Second Chamber, reflected among others in STS 428/2022, of 29 April — is not an academic nicety. Two consequences follow from it that the defense must exploit without exception:

• The rules governing it are not retroactive to the detriment of the requested person, under Article 9.3 of the Spanish Constitution and the Transitional Provision of Law 4/1985 itself, whose substantive provisions only have retroactive effect when they favor that person.
• A statute of limitations already accrued cannot be revived by the later entry into force of a treaty or a stricter conventional clause, because that would amount to restoring legal life to an offense or a penalty that had disappeared from the legal system.

This second criterion was set by the Plenary of the Criminal Chamber of the Audiencia Nacional in its Order 47/2002, of 13 May, and its constitutional dimension was confirmed by STC 293/2006, of 10 October.

3. The blind spot almost no one invokes: the Fourth Additional Protocol that Spain has not ratified

Here lies the argument with the greatest reach and the one most often overlooked in defense submissions.

The Fourth Additional Protocol to the European Convention on Extradition, done at Vienna on 20 September 2012 (Council of Europe Treaty Series No. 212), gave new wording to Article 10 of the 1957 Convention and reversed the rule: extradition shall not be granted where the prosecution or the penalty has become time-barred under the legislation of the requesting Party, but it may not be refused on the ground that it has become time-barred under the legislation of the requested Party, save for an express reservation.

Had that reform been consolidated in our legal system, the Spanish statute of limitations would have ceased to be a ground for refusal. It has not. Spain has ratified only the first three Additional Protocols — the first of 15 October 1975 and the second of 17 March 1978, both in force since 9 June 1985; and the third of 10 November 2010, in force for Spain since 1 April 2015 — so that Article 10 in its original wording remains the one applicable in our general treaty relations.

Practical corollary: when the Public Prosecutor's Office or the requesting State argues that the Spanish statute of limitations is irrelevant, it must be verified whether the instrument they invoke is actually binding on Spain. Special regimes do exist that neutralize the rule — Article 8 of the Dublin Convention of 27 September 1996, concerning extradition between European Union Member States, and Article 62 of the Convention Implementing the Schengen Agreement, which refers the interruption of the statute of limitations exclusively to the provisions of the requesting Party — but these are exceptions of limited scope, not the general rule, and their application remains subject to the non-retroactivity limit described above.

This is how the Plenary of the Criminal Chamber of the Audiencia Nacional resolved it in its Order 21/2023, of 14 April, which overturned Order 184/2023, of 8 March, of the First Section: although the 1996 Convention was applicable to the extradition requested by Switzerland, its Article 8 — a substantive rule — had no retroactive effect where prejudicial to the requested person, so that, the acts already being time-barred under Spanish law on the date that Convention entered into force for the Member States as a whole, surrender had to be refused.

4. How is the statute of limitations computed? The real battlefield

Once the normative premise is won, the matter is decided on the calendar. And the calendar has a trap.

4.1. The extradition request interrupts the statute of limitations

The Supreme Court has held — STS 851/2012, of 24 October, doctrine reiterated in STS 297/2013, of 11 April — that a request for extradition, unlike a mere arrest warrant, constitutes a substantive act directing the proceedings against the alleged offender, with the resulting interrupting effect under Article 132.2 of the Criminal Code.

The reasoning behind the distinction is sound and the defense must know it because it shapes the challenge: the arrest warrant is issued precisely because the person's whereabouts are unknown, whereas the extradition request presupposes their identification and location within the territory of the requested State. And that interrupting effect does not depend on the final outcome of the proceedings: it operates even if surrender is ultimately refused.

4.2. The four fronts where room for defense remains

It does not follow from the above that the limitations argument is doomed. It follows that it must be directed at four other fronts:

• Date of the acts against the date of the request. This is the basic check and the one that resolves most cases: if the term under Article 131 of the Criminal Code corresponding to the equivalent Spanish offense had already been consumed before the requesting State formalized the international request, the statute of limitations has accrued and no later act revives it.
• Formal adequacy of the interrupting request. The interrupting effect is predicated of a request submitted in accordance with the required procedure, processed by the competent bodies, and free of substantial defects. An incomplete request, poorly documented or not submitted through the conventional channel, does not meet the requirements that justify the effect.
• Stoppages during the extradition proceedings. If extradition proceedings are conceived as part of the main criminal proceedings, then stoppages exceeding the limitations period are likewise not permissible within them. A file left stalled for years at the administrative or diplomatic stage opens this avenue.
• Classification under Spanish law. The applicable term is not the one that results from the classification made by the requesting State, but the one corresponding to the equivalent Spanish offense under the principle of dual criminality understood in its substantive sense. The difference between subsuming certain acts under the basic form of Article 368 of the Criminal Code or under the aggravated subtypes of Articles 369 and 370 shifts the term between five, ten and fifteen years.

5. Russia is requesting me: the Spanish statute of limitations against a treaty framework in question

There is one scenario in which the limitations analysis carries particular weight, precisely because the underlying premise — which rule governs the extradition — has itself been called into question.

The Russian Federation ratified the European Convention on Extradition, and until 2022 requests submitted by its authorities were processed under that framework. On 16 March 2022, the Committee of Ministers of the Council of Europe resolved that Russia ceased to be a member of the Organisation with immediate effect, and on 16 September of that same year it ceased to be a Party to the European Convention on Human Rights. Since then, surrenders to Russia have, in practice, been suspended.

The technical consequence is of the first order and remains insufficiently explored in defense submissions: if it is disputed that the 1957 Convention continues to have effect in Spanish-Russian relations, the applicable regime becomes that of Law 4/1985 on the basis of the principle of reciprocity, whose Article 4.4.º retains the Spanish statute of limitations intact as a mandatory ground for refusal. Far from prejudicing the requested person, the shift away from the treaty framework strengthens their position.

To this must be added the disappearance of the protection mechanism that, until 2022, allowed the Audiencia Nacional to accept as sufficient the guarantees offered by the Russian Prosecutor General's Office. With the requesting State no longer subject to any oversight by the European Court of Human Rights, those diplomatic guarantees are left without any forum before which to invoke them, which shifts the debate towards Article 3 of the Rome Convention and Article 5.1.º of Law 4/1985.

Our own case: refusal of surrender to the Russian Federation for drug trafficking

This firm has handled the defense in extradition proceedings 96/2026, before the Third Section of the Criminal Chamber of the Audiencia Nacional, in which our client was sought for drug trafficking offenses. The opposition was built on two combined grounds, and surrender was refused.

The first, and the one of greatest technical weight, was the statute of limitations under Spanish law. The acts described by the requesting authorities fell under Article 368 of the Criminal Code, so that the applicable term was not the one under Russian law, but the one resulting from Article 131 of the Criminal Code based on the maximum penalty attached to the equivalent Spanish offense. That term having been consumed before the requesting State duly formalized the international request, and no procedural milestones with interrupting effect under Article 132.2 of the Criminal Code having been proven by that State, the extinction of criminal liability operated by operation of law and carried with it the mandatory ground for refusal under Article 4.4.º of Law 4/1985.

The second ground was the impossibility of granting surrender given the current state of international relations with the requesting State following the invasion of Ukraine and its departure from the Council of Europe, with the consequent disappearance of the protection mechanism before the European Court of Human Rights to which the diplomatic guarantees offered were tied.

The order of the grounds is not indifferent and is worth bearing in mind, because it explains why the case was won. The argument based on the geopolitical context does not yet constitute settled doctrine: the Judicial Documentation Centre itself records decisions of the Criminal Chamber under which the war situation in Ukraine does not, by itself, constitute a ground for refusal, and throughout 2022 surrenders to Russia were granted on the basis of guarantees transmitted through diplomatic channels. It is an argument that depends on country reports, their updating, and the assessment each Section makes of them — that is, on a discretionary judgment whose outcome is not in the defense's hands.

The statute of limitations, by contrast, allows no discretion. Once the elapse of the term is proven, refusal is mandatory. Cases are lost by entrusting the outcome to the flashier argument and neglecting the arithmetical one.

6. Checklist for opposing extradition on limitations grounds before the Audiencia Nacional

• Fix the dies a quo. The exact date on which the last act described in the request was committed, not the date of the indictment order nor that of the international arrest warrant.
• Determine the equivalent Spanish offense and its abstract penalty. The term under Article 131 of the Criminal Code depends on it. Disputing the aggravated subtype is not a premature discussion on the merits: it is the discussion about the applicable term.
• Identify the applicable treaty instrument and its date of entry into force for Spain. Check whether the requesting State is a party to the 1957 Convention and whether any special clause neutralizing the limitations period of the requested State applies.
• Verify that Spain is not bound by the Fourth Additional Protocol. This is the direct answer to the objection that the Spanish statute of limitations is irrelevant.
• Check whether the statute of limitations had already accrued by the date of entry into force of the rule sought to be applied to the detriment of the requested person.
• Audit the interrupting request. Date of submission, issuing body, channel used, and documentary sufficiency. Without formal adequacy there is no interruption.
• Request from the requesting State the list of interrupting acts. If no procedural milestones interrupting the term are proven, the Chamber computes the full elapse of time.
• Measure the stoppages of the extradition file itself, both at the judicial and the administrative stage.
• Raise the statute of limitations alongside the other grounds, not in their place: dual criminality, minimum penalty threshold, the judicial nature of the arrest warrant, and the risk to fundamental rights under Article 3 of the Rome Convention.
• Prepare the appeal (súplica) before the Plenary. Under Article 15.2 of Law 4/1985, the only remedy against a Section's order is a súplica (an internal appeal for reconsideration), decided by the Plenary of the Criminal Chamber, on which none of the judges who signed the challenged decision may sit as rapporteur. A significant share of the refusals granted on limitations grounds have been obtained precisely at that second stage.

7. Frequently asked questions

Does the Audiencia Nacional assess whether I am guilty in extradition proceedings?

No. The Criminal Chamber merely verifies that the requirements of the applicable treaty or of Law 4/1985 are met. It does not take evidence on the facts nor rule on the requested person's guilt. The only evidence admissible at the hearing under Article 14.2 of Law 4/1985 is evidence concerning the conditions required by the treaty or by the Law.

Can extradition be refused if the offense has become time-barred in Spain but not in the country requesting me?

Yes. Both Article 4.4.º of Law 4/1985 and Article 10 of the 1957 European Convention on Extradition treat the statute of limitations under the law of either State as a ground for refusal. The requesting State's own view is not binding on the Spanish courts.

Which limitations period applies: that of the country requesting me or the Spanish one?

The Spanish one, applied to the offense under the Criminal Code under which the acts are classifiable pursuant to the principle of dual criminality. The terms under Article 131 of the Criminal Code are determined by the maximum penalty attached to the offense, so that the specific classification — basic or aggravated — shifts the applicable term.

Does the international arrest warrant interrupt the statute of limitations?

The extradition request does, under STS 851/2012, of 24 October, and this regardless of whether surrender is granted or refused. A mere arrest warrant, by contrast, lacks interrupting effect according to settled doctrine of the Second Chamber, because it presupposes that the requested person's whereabouts are unknown.

Can a later treaty revive a statute of limitations already accrued?

No. The statute of limitations is a substantive institution and a rule that makes it stricter has no retroactive effect to the detriment of the requested person. So held the Plenary of the Criminal Chamber of the Audiencia Nacional in its Order 47/2002, of 13 May, confirmed by STC 293/2006, of 10 October.

Are extraditions to Russia currently being granted?

In practice, surrenders to the Russian Federation have been suspended since 2022, although the Criminal Chamber has ruled both ways, and refusal on this ground requires proving the specific risk to the requested person's rights, not merely invoking the armed conflict. For that reason, in requests from Russia it is advisable to place the limitations analysis under Article 131 of the Criminal Code first: where it applies, refusal is mandatory and not subject to any discretionary assessment.

At what point must the statute of limitations be raised?

From the first appearance before the Central Investigating Court, and with maximum emphasis during the investigative stage of the file under Article 13 of Law 4/1985 and at the hearing under Article 14. Raising it late means the matter must be entrusted to the súplica before the Plenary, with the requested person already held in extradition-related pre-trial detention.

I have been arrested in Spain under an Interpol notice. How much time do I have?

Very little. Brought before the duty Central Investigating Court within twenty-four hours, the requesting State has forty days to formalize the request, and the Chamber rules by reasoned order within three days of the hearing. The limitations computation must be completed before that hearing, not after.

Legal sources cited

Legislation

• Article 13.3 of the Spanish Constitution.
• Law 4/1985, of 21 March, on Passive Extradition: Articles 1, 4.4.º, 5.1.º, 8, 12, 13, 14.2 and 15.2, and the Transitional Provision.
• European Convention on Extradition, done at Paris on 13 December 1957: Article 10. Instrument of ratification by Spain of 21 April 1982 (Official State Gazette of 8 June 1982).
• Fourth Additional Protocol to the European Convention on Extradition, done at Vienna on 20 September 2012 (CETS No. 212), not ratified by Spain.
• Convention of 27 September 1996, relating to extradition between the Member States of the European Union: Article 8.
• Convention Implementing the Schengen Agreement: Article 62.
• Criminal Code: Articles 130.6.º, 131, 132.2, 368, 369 and 370.

Case law

The decisions cited can be verified at the Judicial Documentation Centre (CENDOJ) of the General Council of the Judiciary. It is recommended to check the full text before invoking them in a procedural submission.