The Sentencing Act 2026 is a major piece of UK legislation that received Royal Assent on 22 January 2026 and will change the way prison sentences are served in England and Wales. From 22 March 2026, courts will be required to suspend all prison sentences of 12 months or less, and new early release rules will release eligible prisoners after serving just 33% of their sentence — down from 40% or 50%.

What is the Sentencing Act 2026?

The Sentencing Act 2026 is a wide-ranging piece of legislation passed by the UK Parliament in response to the ongoing prison capacity crisis in England and Wales. The Act follows years of rising prison numbers, an underfunded prison estate, and warnings from the Public Accounts Committee and others that jails could reach breaking point without structural reform to how sentences are served.

The Act makes changes in three broad areas: how courts must approach short custodial sentences (replacing them with suspended sentences in most cases), how long prisoners must serve before being eligible for release (reducing the proportion of a sentence served in custody), and how the recall system works when people breach licence conditions after release. The Ministry of Justice has described the Act as essential to ending the cycle in which prisons are in a state of perpetual capacity crisis.

Changes to Suspended Sentences (from 22 March 2026)

From 22 March 2026, courts will be under a statutory duty to suspend any custodial sentence of 12 months or less, unless “exceptional circumstances” relating to the offence or offender justify an immediate custodial sentence. This is a significant change from the previous position, where suspension of short sentences was discretionary rather than obligatory.

Additionally, the maximum length of sentence that can be suspended has been extended. Previously, courts could only suspend sentences of up to two years. Under the Sentencing Act 2026, courts will be able to suspend sentences of up to three years for a period of up to three years. This means that more offenders who receive longer suspended sentences will be serving their punishment in the community rather than in custody, subject to conditions such as unpaid work, curfews, and supervision by the Probation Service.

These changes do not apply to defendants under 18, for whom separate youth justice provisions remain in place. They apply to all adult offenders aged 18 and over who are convicted on or after 22 March 2026.

Early Release: The 33% Rule

One of the most significant changes under the Sentencing Act 2026 relates to when prisoners serving Standard Determinate Sentences (SDS) become eligible for automatic release. Under the existing law introduced by the previous government in 2024, most prisoners on SDS sentences are automatically released after serving 50% of their sentence. Before that, from 2003 to 2024, the standard release point was 50% for sentences under four years and 66% for longer sentences.

The Sentencing Act 2026 introduces a new release point of 33% for eligible prisoners serving standard determinate sentences. This means that someone sentenced to, say, six years in prison would be automatically released after two years rather than three. This is subject to an “earned progression” model that will be introduced in autumn 2026, where prisoners must demonstrate engagement with work, education, and training programmes while in custody in order to reach the 33% release point.

For prisoners serving SDS sentences of longer than four years for violent or sexual offences, who are currently released at the 66% point, the new earliest release date under the Act will be the 50% point. This remains significantly earlier than the current position for this group, while ensuring that the most serious offenders serve a larger proportion of their sentence in custody.

Who is Affected?

The early release changes affect prisoners serving Standard Determinate Sentences for most offence types. They do not apply to prisoners serving life sentences, indeterminate sentences for public protection (IPP), or Extended Determinate Sentences (EDS). Those on the most serious orders will continue to be released only when the Parole Board considers it safe to do so, with no change to their earliest release point. For more information on how the Parole Board works, see our dedicated guide.

The change to the 33% release point is not retrospective — it will not apply to sentences imposed before the relevant commencement date. Prisoners already serving sentences under the 50% regime will continue to serve 50% unless their sentences are varied by a court. The new rules will apply to sentences imposed after the commencement date of the early release provisions, which is expected in autumn 2026 alongside the roll-out of the earned progression model.

Recall and Licence Changes

The Sentencing Act 2026 also makes changes to the recall regime — the process by which prisoners who are released on licence can be returned to custody if they breach their licence conditions. The government has indicated that the current recall system contributes significantly to the prison population, as many people are recalled for relatively minor breaches rather than for posing a genuine risk to public safety.

Under the Act, recall periods for standard licence breaches will be shortened, with a fixed-term recall of 28 days becoming the default for most prisoners rather than the open-ended recall that currently applies in many cases. This is intended to reduce the number of people in custody on recall and free up prison places for those serving court-imposed sentences. The Probation Service will retain the ability to extend a recall beyond 28 days where there are genuine public protection concerns. These recall changes are expected to be implemented in the months following Royal Assent.

Timeline: When Do Changes Take Effect?

The Sentencing Act 2026 has a phased implementation timeline. Not all provisions come into force at the same time:

From 22 March 2026 (two months after Royal Assent): The duty on courts to suspend sentences of 12 months or less will come into force. The extension of suspended sentence powers to three years will also commence. These apply to all offenders convicted on or after 22 March 2026.

In the spring/summer of 2026: Changes to recall provisions are expected to be commenced, reducing the standard recall period and freeing prison capacity.

From autumn 2026: The new earned progression model and the 33% standard release point will be rolled out to the prison estate. Existing prisoners on SDS sentences who are sentenced after the autumn commencement date will benefit from the new release point, subject to demonstrating engagement with rehabilitation programmes.

For families whose loved ones are currently in custody, it is worth understanding how sentence lengths and release dates are calculated, and how to arrange a prison visit during the period of custody.

Frequently Asked Questions

What does the Sentencing Act 2026 mean for prisoners?

The Sentencing Act 2026 means that prisoners serving Standard Determinate Sentences will be eligible for automatic release after serving 33% of their sentence (down from 50%), under an earned progression model being introduced in autumn 2026. Prisoners on life sentences, IPP sentences, or Extended Determinate Sentences are not affected. The Act also means that from 22 March 2026, courts must suspend all sentences of 12 months or less in most cases, meaning fewer people will be sent to prison for shorter offences.

When does the Sentencing Act 2026 come into force?

The Sentencing Act 2026 received Royal Assent on 22 January 2026. The first provisions — including the duty to suspend sentences of 12 months or less — come into force on 22 March 2026. The early release changes (the 33% release point) are expected to be implemented in autumn 2026 alongside the earned progression model for prisoners. Changes to the recall system are expected to commence in spring or summer 2026.

Does the Sentencing Act 2026 apply to existing prisoners?

The duty to suspend short sentences applies only to offenders convicted on or after 22 March 2026 — it does not retrospectively affect people already serving custodial sentences. The early release provisions (33% release point) will apply to sentences imposed after the autumn 2026 commencement date. Existing prisoners serving sentences under the current 50% regime will generally continue on their existing release arrangements unless their case is affected by transitional provisions.

Who is not affected by the Sentencing Act 2026?

Prisoners serving life sentences, indeterminate sentences for public protection (IPP), and Extended Determinate Sentences are not affected by the new 33% automatic release provisions. They will continue to be released only when the Parole Board determines it is safe to do so. The most serious offenders — including those convicted of murder and the most serious sexual and violent crimes — will not see their release dates change as a result of this legislation.

What is earned progression under the Sentencing Act 2026?

Earned progression is a new model under which prisoners must demonstrate active engagement with work, education, training, and rehabilitation programmes while in custody in order to reach the new 33% release point. Prisoners who do not engage with these programmes may serve a longer proportion of their sentence before becoming eligible for release. The earned progression model is intended to incentivise rehabilitation and reduce the risk of reoffending, and it is expected to be rolled out across the prison estate from autumn 2026.