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    The content on this page is for general educational purposes and does not constitute legal advice. Every legal situation is unique. For matters involving investigation, arrest, litigation, or formal proceedings, consult a qualified legal professional.

    customs
    serious offence

    Duty Evasion & Undervaluation in Thailand

    Deliberately undervaluing or misclassifying goods to reduce customs duties owed

    Last updated: February 2026
    Legal Sections

    Customs Act B.E. 2560 (2017) §202-204

    Maximum Penalty

    Fine of 2-4 times duty shortfall plus potential imprisonment

    Severity Level

    serious

    Definition

    Deliberately undervaluing or misclassifying goods to reduce customs duties owed Under Thai law, this offence is classified as a serious offence within the category of customs.

    Elements of the Offence

    For a conviction, the prosecution must prove all of the following elements beyond reasonable doubt:

    1

    Deliberately undervaluing goods

    2

    Misclassifying tariff codes

    3

    Failing to declare dutiable goods

    Penalties

    Maximum Penalty

    Fine of 2-4 times duty shortfall plus potential imprisonment

    Actual sentences depend on factors including the severity of the conduct, harm caused, prior convictions, and mitigating circumstances. Courts have discretion to impose lesser sentences within the statutory range.

    Possible Defences

    The following defences may be available depending on the circumstances:

    Good faith valuation error

    Reliance on customs broker

    Note: The availability of defences depends on specific facts. Professional legal advice is essential.

    For Foreigners

    Special Considerations for Foreign Nationals

    Foreign businesses may face import/export license revocation.

    When Legal Representation Matters

    If you are accused of duty evasion & undervaluation or facing investigation, immediate legal representation is essential to protect your rights and build an effective defence.

    Anglo Siam Legal provides experienced legal services across Thailand for both Thai nationals and foreigners.

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