Section 103 — General rules apply to petty offences
English translation
The provisions in Title 1 shall also apply to cases of petty offences, except as provided in the following three sections.
This English translation is provided for reference only and has not yet been firm-verified — always rely on the Thai original.
Firm annotation
Section 103 opens the chapter on petty offences (ลหุโทษ), the least serious class of offence in the Penal Code. It confirms that the general part of the Code, meaning the rules on criminal liability, attempt, participation and penalties in Title 1, governs petty offences unless a specific exception applies. Three exceptions follow immediately: Section 104 provides that a petty offence is committed even without intention, Section 105 provides that an attempt is not punishable, and Section 106 provides that a supporter is not punishable. Read together, these four sections show how the ordinary principles of criminal responsibility are relaxed for minor offences.
Why this matters in practice
For anyone facing a petty-offence charge, this section is the gateway rule: the ordinary defences and doctrines of the general part, such as self-defence, necessity, mistake and the running of limitation periods, still apply, while Sections 104 to 106 change the analysis in the offender's favour. Because petty offences carry only minor penalties, defence strategy often focuses on whether the conduct really is completed by the accused personally, since attempt (Section 105) and mere support (Section 106) are not punishable. Anyone unsure how these general principles interact with a specific charge should review the framework of criminal law in Thailand with a lawyer.
Frequently asked questions
What is a petty offence under Thai law?
A petty offence (ลหุโทษ) is the least serious class of offence in the Penal Code, carrying only minor penalties. Section 103 confirms that the general rules of the Code apply to these offences unless a special exception is stated.
Do the general defences apply to petty offences?
Yes. Because Section 103 imports Title 1 into petty offences, general doctrines such as self-defence, necessity and mistake remain available, subject to the special rules in Sections 104 to 106.