Article 54: Order of increase and reduction
Statutory text (Thai original)
ในการคำนวณการเพิ่มโทษหรือลดโทษที่จะลง ให้ศาลตั้งกำหนดโทษที่จะลงแก่จำเลยเสียก่อนแล้วจึงเพิ่มหรือลด ถ้ามีทั้งการเพิ่มและการลดโทษที่จะลง ให้เพิ่มก่อนแล้วจึงลดจากผลที่เพิ่มแล้วนั้น ถ้าส่วนของการเพิ่มเท่ากับหรือมากกว่าส่วนของการลด และศาลเห็นสมควรจะไม่เพิ่มไม่ลดก็ได้
English translation
In calculating the increase or reduction of the punishment to be imposed, the court shall first fix the punishment to be imposed on the defendant and then increase or reduce it. If there is both an increase and a reduction of punishment, the increase shall be made first and then the reduction shall be made from the result already increased. If the portion increased is equal to or greater than the portion reduced, the court may make neither the increase nor the reduction.
This English translation is provided for reference only and has not yet been firm-verified. Always rely on the Thai original.
Firm annotation
Section 54 sets the method and sequence for adjusting a sentence. The court must first fix the base punishment to be imposed, and only then apply any increase and any reduction. Where both apply, the order is mandatory: increase first, then reduce from the already increased figure. As a simplifying rule, if the portion to be increased is equal to or greater than the portion to be reduced, the court may decline to do either. This procedural discipline links the enhancement provisions (such as Section 92) with the mitigation provisions (such as Section 78), and the courts treat an error in this sequence as a sentencing defect they may correct.
Why this matters in practice
The sequence matters to the final number, because increasing first and then reducing from the raised figure produces a different result than doing it the other way. In practice, where a recidivism increase and a mitigation reduction are the same proportion, courts often apply neither, leaving the base term intact. Because these arithmetic steps are frequently the subject of appeals, defendants should check that the judgment fixed the base penalty first and applied increase before reduction.
Décisions de la Cour suprême interprétant cette section
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Arrêt de la Cour suprême n° 3704/2567 (2024)
Under Section 54 the court must first fix the punishment to be imposed and only then apply the increase; increasing before fixing the base term is incorrect and may be revised.
The Supreme Court corrected the sentencing method, holding that under Section 54 the trial court had to fix the punishment first and then increase it by one-half, and revised the judgment to follow that order.
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Arrêt de la Cour suprême n° 802/2567 (2024)
Under Section 54, in calculating a reduction the court first fixes the punishment, then calculates the portion to be reduced and deducts it from the fixed term.
The Supreme Court en banc explained that under Section 54 the punishment is fixed first, then the reduction portion is calculated and deducted, so a one-third reduction of a four-year term is one year four months, leaving two years eight months.
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Arrêt de la Cour suprême n° 5873/2567 (2024)
Section 54 requires the court first to fix the punishment, then to increase it, then to reduce from the increased figure. Where a one-third increase is followed by a one-third reduction, the two amounts are not equal, so the court may not treat them as equal and decline to make either adjustment.
The Court of Appeal Region 2 fixed ten years' imprisonment, then treated the one-third increase for recidivism as equal to the one-third mitigation reduction and made neither, leaving ten years. The Supreme Court held that contrary to Section 54: increasing ten years by one third and then reducing the result by one third gives eight years, ten months and twenty days, so the two were not equal and both adjustments had to be made.
Curated decisions with case numbers verified against the Supreme Court database. English renderings are the firm's editorial translation for study.
Cited in 30 Supreme Court decisions (1967 to 2024)
Décisions de citation sélectionnées
- Decision 3704/2567 (2024)
- Decision 2754/2556 (2013)
- Decision 7235/2553 (2010)
- Decision 8432/2550 (2007)
- Decision 2820/2550 (2007)
- Decision 1438/2549 (2006)
- Decision 2076/2545 (2002)
- Decision 7329/2543 (2000)
Cette liste est sélectionnée automatiquement, en privilégiant les jugements qui reposent sur cet article plutôt que sur ceux qui se contentent de le citer lors du prononcé de la peine. Elle n'a pas encore été examinée par le cabinet.
Le plus souvent cité aux côtés de
- Article 78 27
- Article 92 14
- Article 83 11
- Article 91 11
- Article 288 9
- Article 33 6
Sections qui apparaissent le plus souvent dans les mêmes jugements que celui-ci. Le chiffre correspond au nombre de décisions.
Calculé sur l'ensemble du corpus de 83 652 décisions de la Cour suprême du cabinet, de 1921 à 2026. Le décompte est exhaustif ; la plage d'années indiquée élimine les valeurs aberrantes rares afin de refléter la répartition réelle des citations. Ces chiffres sont calculés par nos soins et ne constituent pas des statistiques officielles de la Cour. Comment nous les comptons et ce que nous avons mesuré
Foire aux questions
Dans quel ordre un tribunal thaïlandais augmente-t-il et diminue-t-il les peines ?
En vertu de l'article 54, le tribunal fixe d'abord la peine, puis l'aggrave, avant de la réduire à partir de ce montant majoré. L'aggravation précède toujours la réduction.
Que se passe-t-il si l'augmentation et la réduction sont de même ampleur ?
En vertu de l'article 54, si la partie à augmenter est égale ou supérieure à la partie à réduire, le tribunal ne peut procéder ni à l'augmentation ni à la réduction.
Guides connexes sur ThaiLawOnline
Citer cette section
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Citation simple
Penal Code, s. 54 (Thailand) -
Citation académique
Penal Code (Thailand), s. 54. ThaiLawOnline, https://www.thailawonline.com/fr/thai-penal-code/section-54/ (accessed 30 août 2026). -
Citation thaïlandaise
ป.อ. มาตรา 54 -
Lien permanent
https://www.thailawonline.com/fr/thai-penal-code/section-54/ -
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<blockquote cite="https://www.thailawonline.com/fr/thai-penal-code/section-54/"><p>In calculating the increase or reduction of the punishment to be imposed, the court shall first fix the punishment to be imposed on the defendant and then increase or reduce it. If there is both an increase and a reduction of punishment, the increase shall…</p><footer>Penal Code, s. 54 (Thailand): <a href="https://www.thailawonline.com/fr/thai-penal-code/section-54/">ThaiLawOnline</a></footer></blockquote>
The Thai text is authoritative. The English is an unofficial translation by ThaiLawOnline, free to reuse with attribution.