File a Report or Appeal
Report suspected duty or Goods and Services Tax evasion, illicit trade activities, or customs-related scams to Singapore Customs.
Last updated 24 February 2026
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Report Duty/Goods and Services Tax (GST) Evasion or Illicit Trade
If you have information about an individual or business that may have evaded duty or GST, or is involved in other illicit trade activities, you can report it to Singapore Customs.
Use the reporting template to provide details that can help our officers assess and follow up on the matter.
Report a Customs-related Scam
If you encounter a scam that claims to be from or related to Singapore Customs, report it using the online form. This helps us take action and protect the public from similar scams.
Appeals on Notice of Customs Offence
You may submit an appeal if you have received a Notice of Customs Offence from Singapore Customs.
Appeals for Three-Quarter Tank Rule Offences and Notice of Customs Offence issued by Singapore Customs Checkpoints Division
If your offence relates to the Three-Quarter Tank Rule or you have a Notice of Customs Offence issued by the Singapore Customs Checkpoints Division, submit your appeal using the Customs Offence Appeal Form.
Submit a customs offence appeal
Appeals issued by investigation branches
If the Notice of Customs Offence was issued by the Customs’ Suppression & Community Engagement Branch or the Special Investigation Branch, submit your appeal using the same form.