Singapore Customs collected S$12.1 billion in Goods and Services Tax (GST) and customs and excise duties in 2025 — an increase of S$400 million from the previous year, according to figures released in conjunction with International Customs Day.
Of the total sum, S$8.9 billion came from GST while S$3.2 billion was derived from customs and excise duties. The agency noted that these revenues play a crucial role in funding essential public services such as healthcare, education, and infrastructure development.
The agency reported a sharp increase in enforcement cases last year, attributing the trend to stronger multi-agency efforts to curb tax evasion and other illicit trade.
Tobacco-related offences climbed by 50%, reaching 30,371 cases in 2025, compared with 20,131 in 2024. Liquor-related cases also rose to 4,266 from 3,384 the previous year.
More strikingly, GST-related offences surged by over 80%, from 5,447 to 9,940 cases. Singapore Customs said the intensified enforcement helped prevent significant revenue loss and ensured fair competition among compliant businesses.
One major case involved under-declared vehicle imports. Investigations revealed that about 260 vehicles imported between June 2023 and April 2025 were undervalued, leading to more than S$1 million in unpaid taxes and duties.
Changes in duty collections reflected evolving consumption and economic patterns. Motor vehicle duties grew from S$370.6 million to S$405.8 million, while tobacco duties remained steady at S$1.1 billion. Liquor duties slipped from S$775.9 million to S$742.1 million, and petroleum, diesel, and CNG duties edged down from S$992 million to S$976.7 million.
The stability in tobacco revenue, despite intensified enforcement, suggested consistent consumption levels amid sustained tax rates.
2025 marked a major step forward in the agency’s digital transformation. The launch of the Data Analytics and AI System (DAISY) improved risk detection and operational precision by integrating more than 80 data tables and supporting 200 users across 14 applications.
The use of AI has cut manual processing times from 20 minutes to under two minutes, streamlined document reviews, and unified previously fragmented datasets.
Other key digital initiatives included:
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AI-assisted processing for vehicle import documents, saving an estimated 2,100 hours annually.
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Digital investigation workflows replacing 58 manual templates, cutting case-handling time by around two hours per case.
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Self-service kiosks at checkpoints, which reduced in-person transactions from 42% to 7.5%, recording nearly 25,000 uses in 2025.
Singapore Customs also expanded its international enforcement reach through intelligence-sharing efforts that helped seize 96 million illicit cigarettes across Australia, Hong Kong SAR, the UK, and the US.
During International Customs Day celebrations, eight officers received the World Customs Organisation (WCO) Certificate of Merit in recognition of their contributions to digital innovation and enforcement excellence.
Director-General Tan Hung Hooi reaffirmed the agency’s mission to protect revenue, enable trade, and safeguard society amid an evolving global trade environment.
“By combining firm enforcement, smart facilitation, and purposeful digital transformation, Singapore Customs remains committed to supporting Singapore’s economy and the people it serves,” he said during his keynote address.
The agency plans to further integrate AI capabilities into its operations, deepen risk-based monitoring frameworks, and strengthen collaboration with domestic and international partners to stay ahead of emerging threats in global trade.