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Pre-trial detention

How long can pre-trial detention last? Maximum time limits under section 178 StPO

Maximum time limits for pre-trial detention under section 178 StPO: two months, six months, one year or two years depending on the charge and ground for detention.

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15 June 2026 · Mag. Christopher Angerer, Rechtsanwalt

Pre-trial detention is not an open-ended measure. Section 178 StPO sets firm outer limits: depending on the seriousness of the charge, detention may not exceed two months, six months, one year or two years. Understanding these limits allows the defence strategy to be aligned accordingly and action to be taken in good time.

This post explains the four tiers of section 178 para 1 StPO, the conditions for an extension beyond six months under section 178 para 2 StPO and the consequences when a time limit expires. Proportionality under section 5 StPO remains an independent constraint that operates regardless of the maximum time limits.

Which time-limit situation applies?

Maximum duration, extension, expiry: what concerns you?

The maximum time limits for pre-trial detention under section 178 StPO depend on the charge and the ground for detention. Choose the topic that is relevant to you right now and receive an assessment with concrete first steps.

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01 Question 1

What concerns you about the time limits for pre-trial detention?

Section 178 StPO sets firm outer limits on how long pre-trial detention may last. The applicable limit depends on the offence charged and the ground for detention. Choose the topic that is relevant to you right now.

All paths at a glance

Overview of all answers.

01

The applicable time limit depends on the charge and the ground for detention: 2 months, 6 months, 1 year or 2 years under section 178 para 1 StPO.

Section 178 para 1 StPO has four tiers. If pre-trial detention is based solely on the risk of collusion under section 173 para 2 Z 2 StPO, it may last at most two months. Where the charge is a misdemeanour, the maximum duration is six months. Where the charge is a felony, the ceiling is one year. If the charge is a felony carrying a custodial sentence of more than five years, the maximum duration extends to two years. The decisive factor is the most serious charge on which the detention rests.

What to do now: First, examine the exact charge and the detention order to identify the applicable tier. Second, record the start of detention precisely, because the time limit runs from the first day of pre-trial detention. Third, discuss with the defence whether the classification of the offence as a misdemeanour or felony is correct and whether any objection is available.

In depth: duration and maximum time limits of pre-trial detention →
02

When the time limit expires, pre-trial detention must be lifted unless a new time-limit situation intervenes.

As the time limit draws near, the need for action intensifies. The periodic detention review under sections 175, 176 StPO takes place in any event, but a timely release application can trigger an earlier hearing and sharpen the focus on the expiry date. Proportionality under section 5 StPO is an independent argument at this stage: even before the time limit has run, detention may already be disproportionate if the investigation has stalled.

What to do now: First, calculate the exact expiry date and factor it into the defence strategy. Second, consider a release application to focus the detention review on the approaching time limit. Third, examine whether proportionality already supports release even before the maximum duration expires.

In depth: detention review in detail →
03

Continuation beyond six months is permissible under section 178 para 2 StPO only where special difficulty or special scope of investigations makes it unavoidable.

Section 178 para 2 StPO allows extension beyond six months only where the special difficulty or special scope of investigations makes it unavoidable in relation to the weight of the grounds for detention. The threshold is high: general complexity is not enough; the authorities must set out concretely why the investigation could not yet be concluded. The general maximum duration under section 178 para 1 StPO and proportionality under section 5 StPO remain independent constraints alongside this.

What to do now: First, read the grounds for extension in the detention order carefully and assess whether they are substantiated. Second, develop counter-arguments against the alleged special difficulty or special scope. Third, consider a detention appeal to the higher regional court if the extension reasoning does not meet the statutory threshold.

In depth: detention appeal step by step →
04

Once the time limit expires, the defendant must be released. Re-arrest for the purpose of the main hearing is permissible for at most six weeks at a time.

When the time limit under section 178 StPO runs out without the main hearing having started, pre-trial detention must be lifted and the defendant released. The time limits run until the beginning of the main hearing. If the person released because the time limit expired is re-arrested for the purpose of the main hearing, this is permissible under section 178 StPO for at most a further six weeks at a time. This short period is designed to ensure that the main hearing is conducted without delay.

What to do now: First, use the freedom after release to prepare for the main hearing together with the defence. Second, keep the date of the main hearing in view, because that is where the proceedings will be decided. Third, examine whether compensation for the pre-trial detention suffered may be available under the StEG 2005 if the proceedings are discontinued or an acquittal is obtained.

In depth: pre-trial detention at a glance →

The four tiers of maximum duration under section 178 para 1 StPO

The law scales the permissible maximum duration of pre-trial detention according to the gravity of the charge. If detention is based solely on the risk of collusion under section 173 para 2 Z 2 StPO, it may last at most two months. This short timeframe reflects that the risk of collusion typically diminishes as the investigation progresses and therefore does not justify lengthy detention.

Where the charge is a misdemeanour, the maximum duration is six months. Where the charge is a felony, one year is the ceiling. If the charge is a felony carrying a custodial sentence of more than five years, the limit extends to two years. The decisive factor is the most serious charge on which the detention rests.

These time limits run until the beginning of the main hearing, at which point their limiting function ends. The periodic detention review under sections 175, 176 StPO monitors the continuation of detention within these limits. Proportionality under section 5 StPO remains an independent constraint: detention must be lifted as soon as it becomes disproportionate, even if the maximum time limit has not yet expired.

Extension beyond six months under section 178 para 2 StPO

Continuation of pre-trial detention beyond six months is permissible only under heightened requirements. Section 178 para 2 StPO demands that the special difficulty or special scope of the investigations makes it unavoidable in relation to the weight of the grounds for detention. This threshold requires the authorities to set out concretely why the proceedings could not yet be concluded.

General complexity of the proceedings is not sufficient. The court must reassess proportionality at each detention review and examine whether the conditions of section 178 para 2 StPO still obtain. The longer the detention lasts, the more demanding the duty to give reasons becomes.

In practice it is important to read the extension grounds in the detention order carefully and check them for concrete substance. Where that substance is absent, a detention appeal to the higher regional court provides the right remedy. A combination of detention appeal and release application for the detention review is often the appropriate response in this situation.

The tiers compared

Maximum time limits under section 178 para 1 StPO at a glance

The permissible maximum duration depends on the charge and the ground for detention. The table sets out the four tiers side by side.

Maximum time limits for pre-trial detention under section 178 para 1 StPO (until the beginning of the main hearing)
Charge or ground for detention Maximum duration Note
Risk of collusion only Detention based solely on section 173 para 2 Z 2 StPO 2 months Shortest limit, as the risk of collusion decreases as the investigation progresses
Misdemeanour Charge of a misdemeanour 6 months Extension beyond 6 months only under section 178 para 2 StPO
Felony Charge of a felony 1 year Proportionality remains an independent constraint under section 5 StPO
Serious felony Felony carrying more than 5 years 2 years Highest tier; periodic detention review under sections 175, 176 StPO monitors continuation

The time limits run until the beginning of the main hearing. If the person released because the time limit expired is re-arrested for the purpose of the main hearing, this is permissible for at most six weeks at a time (section 178 StPO).

What happens when the time limit expires

When the time limit of section 178 StPO runs out without the main hearing having started, pre-trial detention must be lifted and the defendant released. The court acts of its own motion, but a release application makes the need for action clear and can speed up the process.

Release because of the expiry of the time limit does not necessarily mean the end of the criminal proceedings. If the person concerned is re-arrested for the purpose of the main hearing, this is permissible under section 178 StPO for at most a further six weeks at a time. This short period is designed to ensure that the main hearing is conducted without delay.

If the proceedings end in acquittal or discontinuation, the pre-trial detention suffered may be compensable under the StEG 2005. It is worth discussing this claim with the defence at an early stage to avoid missing any deadlines.

Frequently asked questions

What people often ask about the maximum duration of pre-trial detention.

How long can pre-trial detention last at most? +

Section 178 para 1 StPO has four tiers: two months if detention is based solely on the risk of collusion; six months where the charge is a misdemeanour; one year where the charge is a felony; two years where the charge is a felony carrying more than five years. The decisive factor is the most serious charge on which the detention rests. The time limits run until the beginning of the main hearing.

Can pre-trial detention be extended beyond six months? +

Yes, but only under strict conditions. Section 178 para 2 StPO allows continuation beyond six months only where the special difficulty or special scope of the investigations makes it unavoidable in relation to the weight of the grounds for detention. General complexity is not sufficient. The court must reassess the conditions at each detention review.

What happens when the time limit expires? +

When the time limit of section 178 StPO expires, pre-trial detention must be lifted and the defendant released. If the defendant is re-arrested for the purpose of the main hearing, this is permissible for at most a further six weeks at a time. The criminal proceedings themselves continue independently of this.

What is the difference between the maximum time limit and proportionality? +

The maximum time limits of section 178 StPO are absolute ceilings: once they are reached, detention must be lifted. Proportionality under section 5 StPO is an independent constraint that operates regardless of whether the time limit has been reached. Detention may therefore already be disproportionate and must be lifted before the maximum time limit expires, for example if the investigation stalls or a more lenient measure becomes available.

Which time limit applies if detention is based solely on the risk of collusion? +

If pre-trial detention is based solely on the risk of collusion under section 173 para 2 Z 2 StPO, the maximum duration under section 178 para 1 StPO is two months. If an additional ground for detention arises, such as a flight risk, the applicable maximum duration is determined by the charge and the relevant ground for detention at that point.

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