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Immigration detention

Detention appeal to the Federal Administrative Court in Austria, procedure and prospects of success

The detention appeal under § 22a BFA-VG to the Federal Administrative Court: what it reviews, the time limits, the urgent procedure and the consequences of a lifting.

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Mag. Christopher Angerer, Rechtsanwalt

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11 June 2026 · Mag. Christopher Angerer, Rechtsanwalt

A person held in immigration detention is not without rights. There is a legal remedy against the detention before the Federal Administrative Court. The detention appeal under § 22a BFA-VG is the central remedy against an ongoing or already ended immigration detention. It does not lead to a criminal court but to an administrative court that reviews the lawfulness of the detention in an urgent procedure.

This article explains what the detention appeal reviews, which court has jurisdiction, which time limits apply, how the procedure works, what the consequences of a lifting are and what role legal representation plays. Anyone first looking for the basics of immigration detention will find them in the article Immigration detention in Austria, overview for those affected and their relatives and on the topic page on immigration detention.

Where do you stand in the appeal proceedings?

Which step fits your situation?

The detention appeal is an urgent procedure, and the right lever depends on the stage. Choose what matches your situation, you receive an assessment with the appropriate next steps and references.

You already know you want to send a request? Go directly to the contact form.

01 Question 1

Where do you stand in the appeal proceedings against the detention?

Which step applies now depends on the stage: an ongoing detention with no appeal brought yet, an appeal already filed before the oral hearing, a detention that has already ended, or the question of costs and legal aid. Choose what matches your situation; you receive an assessment with concrete next steps.

All paths at a glance

Overview of all answers.

01

While the detention is ongoing, the appeal under § 22a BFA-VG can be brought at any time, ideally combined with an application for a less restrictive measure.

As long as the immigration detention continues, the detention appeal under § 22a BFA-VG can be brought at any time, that is, without being bound by the six-week period. The Federal Administrative Court decides in an urgent procedure, where the person is still held as a rule within one week and usually after an oral hearing. Combine the appeal with a concretely reasoned application for a less restrictive measure under § 77 FPG.

Basics: Immigration detention in Austria at a glance →
02

Before the oral hearing, complete preparation is what counts: exculpatory evidence and a concrete offer of a less restrictive measure.

The oral hearing is the standard case before the Federal Administrative Court. Prepare the exculpatory circumstances, such as an address suitable for registration, a reliable reference person and, where applicable, a willingness to lodge a financial security. The facts are assessed as at the time of the decision, so evidence submitted later can also be taken into account.

In depth: immigration detention on the topic page →
03

Even after the detention has ended, its unlawfulness can be established, here the six-week period must be observed.

Where the immigration detention has already ended, the appeal under § 22a BFA-VG can seek a finding that the detention was unlawful. Unlike during ongoing detention, the six-week appeal period must be observed here. A finding of unlawfulness can form the basis for further steps and strengthens the position of the person concerned in the further proceedings.

In depth: immigration detention on the topic page →
04

Costs depend on the effort involved; anyone who meets the financial conditions can apply for legal aid.

The lawyer’s costs depend on the effort involved, a written submission alone is more economical than representation in an oral hearing. Anyone who meets the financial conditions can apply for legal aid (Verfahrenshilfe), which covers the costs of legal representation in whole or in part. Have it checked early which option makes sense in your case.

Basics: Immigration detention in Austria at a glance →

What the detention appeal reviews

The detention appeal reviews the lawfulness of the detention order and of the detention. The Federal Administrative Court examines two axes. First, the need for securing: are there concrete facts giving reason to fear that the person will evade the proceedings or the removal? Second, proportionality: could the securing purpose not be achieved just as well by a less restrictive measure under § 77 FPG?

Both axes are independent points of attack. An appeal can succeed solely because the need for securing was reasoned only in generic terms, or solely because the authority did not seriously examine an obvious less restrictive measure. The Federal Administrative Court has made clear in numerous decisions that the authority must set out the concrete efforts to terminate residence and their prospects of success. If it is established that a removal cannot be carried out at all, the detention lacks any basis.

The facts are assessed as at the time of the decision. This means that evidence submitted later, such as an address now suitable for registration or the commitment of a reference person, can be taken into account in the decision. This is what makes careful preparation of the appeal so important.

Jurisdiction, the Federal Administrative Court instead of a criminal court

The Federal Administrative Court decides on the detention appeal. This is the decisive difference from the detention appeal in criminal proceedings. Immigration detention is an administrative measure of the Federal Office for Immigration and Asylum, so its legal protection runs through the administrative court system, not through the criminal court.

This distinction is not academic, it has practical consequences. The detention appeal against pre-trial detention follows the Code of Criminal Procedure and goes to the Higher Regional Court. The detention appeal in immigration matters follows § 22a BFA-VG and goes to the Federal Administrative Court. Anyone who takes the wrong legal route loses time, which is particularly scarce in immigration detention. We cover the criminal-procedure detention appeal on the topic page on the detention appeal.

The procedure before the Federal Administrative Court follows the general rules of administrative court procedure, supplemented by the special urgency provisions for immigration detention matters. This combination ensures that a decision on an ongoing detention is reached particularly quickly.

Time limits and the course of the procedure

The appeal period is in principle six weeks. However, as long as the immigration detention continues, the appeal can be brought at any time, that is, without being bound by the time limit. This is a central particularity: anyone still being held is never too late.

The Federal Administrative Court decides in an urgent procedure. Where the person is still being held, the decision is as a rule reached within one week. The oral hearing is the standard case; only under narrow conditions may the court decide without a hearing. At the hearing, the exculpatory circumstances, such as an address suitable for registration, a reliable reference person and a willingness to lodge a financial security, can be presented directly.

In parallel with the appeal, an application for a less restrictive measure under § 77 FPG can be filed with the Federal Office. The two routes do not exclude one another; on the contrary, they reinforce each other. Anyone who attaches to the appeal a concretely reasoned offer of a less restrictive measure increases the prospect that the court will deny proportionality and lift the detention.

Decision and consequences of a successful appeal

The Federal Administrative Court may uphold the appeal or dismiss it. A lifting leads to immediate release from immigration detention. If the court finds that the detention was or is unlawful, the basis for the continued detention thereby ends.

A confirmation allows the detention to continue. In that case the periodic review under § 80 (6) FPG remains in place as a second safety net, and where the situation changes a new appeal can be brought as long as the detention continues. A new or supplemented application for a less restrictive measure also remains possible.

Where the detention is declared unlawful, this has significance beyond release. The finding of unlawfulness can form the basis for further steps and strengthens the position of the person concerned in the further proceedings. Which consequences come into consideration in the individual case depends on the content of the decision.

The periodic review as a second track

In addition to the appeal there is a second control that runs of the court’s own motion. § 80 (6) FPG obliges the Federal Administrative Court to review the proportionality of the detention where it lasts longer than four months, and thereafter again at intervals of eight weeks. This review runs regardless of whether an appeal has been brought.

For the person concerned this means additional security. Even if no appeal is pending, the detention is subject to ongoing judicial control from the four-month mark. In practice it is worth submitting new evidence at these review dates too, such as accommodation now available or a reference person who can ensure compliance with less restrictive measures.

Both tracks, the appeal and the periodic review, pursue the same goal: to prevent a detention from lasting longer than the securing purpose justifies. The maximum duration under § 80 FPG forms the outer limit, which the Federal Office may not circumvent by artificial segmentation.

Costs, legal aid and the role of the lawyer

The lawyer’s costs depend on the effort involved. A written submission alone is more economical; representation in an oral hearing before the Federal Administrative Court is more demanding. Anyone who meets the financial conditions can apply for legal aid (Verfahrenshilfe), which covers the costs of legal representation in whole or in part.

The role of legal representation begins early. It inspects the file, examines the detention order for reasoning defects regarding the need for securing and proportionality, prepares the concretely reasoned offer of a less restrictive measure and brings the appeal in good time and in full. At the oral hearing it presents the exculpatory circumstances directly.

Precisely because the procedure is an urgent one, acting quickly pays off. The earlier legal representation is engaged, the more completely the appeal can be prepared and the sooner it can lead to a lifting of the detention.

The detention appeal and the application for a less restrictive measure under § 77 FPG complement each other. Using both routes in parallel and with concrete reasoning increases the prospect of a lifting of the detention. The basics of immigration detention are explained in the article Immigration detention in Austria, overview for those affected and their relatives.

Frequently asked

What those affected frequently ask about the detention appeal.

Which court does the detention appeal go to? +

The Federal Administrative Court. Immigration detention is an administrative measure of the Federal Office for Immigration and Asylum, so its legal protection runs under § 22a BFA-VG through the administrative court system. This is the difference from the detention appeal in criminal proceedings, which goes to the Higher Regional Court under the Code of Criminal Procedure.

What time limit applies to the detention appeal? +

In principle six weeks. However, as long as the immigration detention continues, the appeal can be brought at any time. Anyone still being held is therefore never too late. Where the person is still being held, the Federal Administrative Court as a rule decides within one week.

Is there an oral hearing? +

The oral hearing is the standard case. Only under narrow conditions may the Federal Administrative Court decide without a hearing. At the hearing, the exculpatory circumstances, such as an address suitable for registration, a reliable reference person and a willingness to lodge a financial security, can be presented directly.

What happens if the court upholds the appeal? +

A lifting leads to immediate release from immigration detention. If the court finds that the detention was or is unlawful, the basis for the continued detention thereby ends. A confirmation, by contrast, allows the detention to continue; the periodic review under § 80 (6) FPG then remains in place as a second control.

Can I pursue the appeal and an application for a less restrictive measure in parallel? +

Yes, and this is often sensible. The application for a less restrictive measure under § 77 FPG is filed with the Federal Office, while the appeal goes to the Federal Administrative Court. The two routes do not exclude one another. Attaching a concretely reasoned offer of a less restrictive measure to the appeal increases the prospect that the court will deny proportionality.

Who bears the costs and is there legal aid? +

The lawyer’s costs depend on the effort involved; a written submission alone is more economical than representation in an oral hearing. Anyone who meets the financial conditions can apply for legal aid (Verfahrenshilfe), which covers the costs of legal representation in whole or in part.

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