Section 91 — Punishment for multiple offences
English translation
When it appears that a person has committed several distinct acts constituting different offences, the court shall punish that person for every act as a separate count of offence. However, whether or not there is any increase of punishment, reduction of punishment, or reduction of the scale of punishment, when the punishments for all counts are combined, the total term of imprisonment must not exceed the following limits:
(1) ten years, where the most serious count carries a maximum term of imprisonment not exceeding three years;
(2) twenty years, where the most serious count carries a maximum term of imprisonment exceeding three years but not exceeding ten years;
(3) fifty years, where the most serious count carries a maximum term of imprisonment exceeding ten years, except in a case where the court imposes imprisonment for life.
This English translation is provided for reference only and has not yet been firm-verified — always rely on the Thai original.
Firm annotation
Section 91 is the counterpart to Section 90: it governs several distinct acts constituting different offences and requires the court to punish each as a separate count (krathong). It then sets aggregate ceilings on the combined term of imprisonment, tiered by the maximum penalty of the heaviest count: ten years, twenty years, or fifty years, with the fifty-year cap displaced where the court imposes life imprisonment. The threshold issue is again whether the conduct amounts to several distinct acts (separate intentions, separable in fact) rather than one act under Section 90. The ceilings apply after any increase, reduction, or reduction of the scale of punishment has been calculated, so the cap operates on the final combined figure.
Why this matters in practice
Section 91 is where cumulative penalty exposure is decided: repeated conduct treated as many counts can stack into decades of imprisonment, subject only to the ten, twenty, or fifty-year ceiling for the heaviest count, or life. For defendants, arguing that separate charges were really a single continuing act can move a case from Section 91 stacking to a single Section 90 penalty. Where multiple counts stand, a guilty plea and mitigation under Section 78 can substantially cut the combined term before the ceiling even applies. Because the count structure drives the arithmetic, it is worth having counsel model the exposure; you can consult a Thai lawyer online.
Supreme Court decisions interpreting this section
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Supreme Court Judgment No. 3270/2568 (2025)
Where each of several counts carries life imprisonment, the counts are punished individually but combine under Section 91(3) to a single term of life imprisonment.
The defendant was convicted on four counts of an offence each carrying life imprisonment. Each count was punished with life, but on combining the counts under Section 91(3) the total remained life imprisonment.
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Supreme Court Judgment No. 3133/2568 (2025)
Deceiving a victim into transferring money on separate occasions, where each transfer could have been halted on its own, constitutes several distinct offences under Section 91 rather than one continuing offence.
The victim was induced to transfer money on separate occasions. Because each deception was self-contained and could have been stopped, the acts were held to be several distinct offences under Section 91, not one continuing offence with a single intent.
Curated decisions with case numbers verified against the Supreme Court database. English renderings are the firm's editorial translation for study.
Frequently asked questions
Is there a limit on total imprisonment for multiple counts?
Yes. Under Section 91 the combined term is capped at ten, twenty or fifty years depending on the maximum penalty of the most serious count, unless the court imposes life imprisonment.
When are repeated acts treated as separate counts?
When each act is a distinct offence with its own intent and can be separated in fact, the court treats them as several counts under Section 91 rather than one act under Section 90.