Prisoner Transfer from Spain: Serving Your Sentence in Your Home Country (2026)

A foreign national convicted in Spain does not always have to serve the whole sentence inside a Spanish prison. Under international cooperation instruments, the remaining custodial sentence can be enforced in the person's country of nationality or residence. This is known as a transfer of sentenced persons, and it runs through two main channels: the EU route (Framework Decision 2008/909/JHA, transposed in Spain by Law 23/2014) and the non-EU route under the 1983 Strasbourg Convention, which still governs transfers to and from the United Kingdom. As prison-law and sentence-enforcement lawyers, we explain how a transfer works and where it differs from deportation.

What a Prisoner Transfer Is

A transfer of sentenced persons is a form of international judicial cooperation in criminal matters. The sentence handed down in Spain remains the sentence being served; what changes is the State responsible for enforcing it. The receiving State takes over supervision of the custodial penalty and applies its own rules on enforcement, prison regime and early release, within limits set by the applicable instrument.

The purpose is well established: to further the social rehabilitation of the sentenced person by letting them serve the sentence closer to their family, language and community. It is not an amnesty, a pardon or an early release; the sentence continues, only in another country.

Two limits are worth flagging from the outset. First, the receiving State may sometimes adapt the sentence — for example, reducing it where its nature or length is incompatible with that State's own maximum for the offence — but adaptation must not aggravate the penalty. Second, the person keeps serving the same conviction: a transfer does not reopen the trial, does not allow the receiving State to re-judge guilt, and does not, by itself, wipe out the record.

The EU Route: Framework Decision 2008/909/JHA and Law 23/2014

Between EU Member States, transfers are governed by Council Framework Decision 2008/909/JHA on the application of the principle of mutual recognition to judgments imposing custodial sentences. Spain transposed it — together with a package of other mutual-recognition instruments — through Law 23/2014, of 20 November, on the mutual recognition of criminal decisions in the European Union. You can read more in our overview of the EU Mutual Recognition Law.

Its defining features are:

• Mutual recognition: the sentencing State forwards the judgment plus a standard certificate, and the receiving State recognises and enforces it, in principle without re-examining the merits.
• Consent is not always required: unlike the classic model, the Framework Decision allows the transfer without the prisoner's consent in defined situations — notably where the person is sent to the Member State of their nationality in which they live, or to the State to which they would be expelled or deported after serving the sentence.
• Deadlines: the receiving State should in principle decide on recognition and enforcement within about 90 days of receiving the certificate, which makes the EU route faster on paper than the treaty route.

The Non-EU Route: The 1983 Strasbourg Convention (Including the UK)

For States outside the EU framework — including, since Brexit, the United Kingdom — the reference instrument is the Council of Europe Convention on the Transfer of Sentenced Persons, done at Strasbourg on 21 March 1983, and its Additional Protocol. Many non-European countries are also parties, which makes it the practical backbone of most transfers to and from Spain outside the EU.

The Strasbourg model is more traditional:

• Consent as the rule: the sentenced person's consent is normally required, precisely because the transfer is conceived as a benefit oriented to rehabilitation.
• Three-way agreement: the transfer generally needs the agreement of the sentencing State, the administering State and the prisoner.
• No fixed deadlines: unlike the EU route, the Convention sets no strict time limits, so the process tends to take considerably longer.

The Core Requirements

Across both routes, the recurring conditions for a transfer are:

1. Final, enforceable sentence: there must be a final custodial judgment. Appeals or pending proceedings normally block a transfer until the conviction is settled.
2. Link to the receiving State: as a rule, nationality of — or genuine residence in — the State that will enforce the sentence.
3. Consent, where the instrument demands it: required under the Strasbourg Convention; dispensable in the defined EU scenarios.
4. Minimum sentence remaining: a meaningful part of the sentence should still be unserved — commonly at least around six months — so the transfer is practical.
5. Dual criminality: normally the acts must also be punishable in the receiving State, subject to the exceptions each instrument allows.

Beyond these, each route layers its own grounds to refuse a transfer — for instance where enforcement in the receiving State would be time-barred, where there is no real connection with that State, or where recognition would breach fundamental-rights safeguards. Getting the documentation right at the start (a certified final judgment, an accurate certificate, proof of nationality or residence) is what avoids months of avoidable back-and-forth.

Who Handles It and How Long It Takes

In Spain the process is channelled through the courts responsible for enforcement and the Ministry of Justice as the usual central authority for international cooperation, working with the receiving State's authorities. A transfer can be initiated at the request of either State and, in practice, the sentenced person's own application often sets it in motion.

On timing, expectations should be realistic. Even under the EU route, with its 90-day target for the recognition decision, translation of the judgment, transmission of documents, the receiving State's checks and the physical move all add up: several months is normal, and complex cases can run well beyond a year. The Strasbourg route, with no binding deadlines, is typically slower still. We never promise a timeframe or an outcome — both depend on two administrations and the specific instrument.

A transfer request should not be confused with an extradition or a European Arrest Warrant. Extradition and the EAW are about surrendering a person for prosecution or to begin serving a sentence, often against their will; a transfer of sentenced persons is about where an already-imposed sentence is served, frequently at the prisoner's own request. The certificate and paperwork travel through similar cooperation channels, but the aim and the safeguards are different.

Relationship with Substitute Expulsion under Article 89 CP

A transfer should not be confused with substitute expulsion under Article 89 of the Criminal Code. Under Article 89 CP, prison sentences of more than one year imposed on a foreign citizen are, as a rule, replaced by expulsion from Spanish territory; for sentences of more than five years the court decides whether part is served first, with expulsion substituting the remainder once the person reaches the third grade or is granted parole.

The practical difference is decisive. Substitute expulsion ends the Spanish sentence and removes the person from Spain, usually with a re-entry ban; the sentence is not served abroad. A transfer, by contrast, keeps the very same sentence alive under another State's supervision. Which mechanism is preferable — or which one the person should resist — depends on nationality, residence, family ties, the length of the sentence and personal plans. For UK or non-EU nationals, weighing a Strasbourg-Convention transfer against a possible expulsion is a case-by-case exercise.

Transfer and Prison Classification

Transfer is closely tied to prison classification. The stage of the sentence — whether the person remains in a closed regime, has progressed to an ordinary regime, or is heading towards the third grade and open regime — affects both the appetite for a transfer and how the receiving State will continue enforcement. A prisoner near the end of the sentence may have little to gain from a slow transfer; one at the start, far from home, may benefit greatly. Coordinating the transfer request with the classification and grade-progression strategy is part of building a coherent sentence-enforcement plan.