Singapore Tariff Schedule,
read and applied live.

How the schedule is built

Singapore's tariff nomenclature sits inside a regional layer before it sits inside a national one. The World Customs Organization's 6-digit Harmonized System forms the base, exactly as it does everywhere else. ASEAN's ten member states then jointly extend it two digits further into the ASEAN Harmonised Tariff Nomenclature (AHTN), an 8-digit standard common across the bloc and revised in step with each five-yearly WCO update, most recently in 2022. Singapore does not run a further national suffix on top of the AHTN the way many jurisdictions add a domestic tail to the international code; the 8-digit AHTN line is the operative classification for both duty and Goods and Services Tax (GST) purposes.

The Singapore Trade Classification, Customs and Excise Duties (STCCED) publication is the legal reference for the schedule, but Singapore Customs maintains the HS/CA Product Code Search Engine as the live, authoritative version, since national-level adjustments to the last two digits happen more frequently than the underlying five-year WCO cycle would suggest. A saved STCCED extract from even a few months ago can already be stale.

Classification follows the same General Interpretative Rules used across the WCO system: a good is placed first at the 4-digit heading, then narrowed through successive subheadings, with rules on essential character governing composite goods and sets. Two features of the 8-digit line matter for a compliance filing beyond the classification itself. Every code carries an indicator for whether the good is dutiable, and every code is cross-referenced to a 4-digit CA Product Code identifying which Competent Authority, such as the Health Sciences Authority for medical devices or the Singapore Food Agency for food products, must clear the shipment before or alongside Singapore Customs. A correct HS classification with an unaddressed CA requirement will still stop a shipment cold.

Every import and export declaration is filed electronically through TradeNet, Singapore's single-window customs platform. TradeNet does not accept a 6-digit code; the full 8-digit AHTN line, together with the relevant CA product code where applicable, is a condition of an acceptable declaration.

Duty and GST: two separate charges

Singapore operates as a free port in the literal sense: customs duty applies to close to nothing. The overwhelming majority of tariff lines carry a general duty rate of zero, and there is no broad Column-1-style schedule of positive rates to consult for ordinary goods. This is the single fact that most distinguishes Singapore's schedule from almost every other jurisdiction, and it is also the fact that leads some importers to under-invest in classification discipline, on the assumption that a wrong code cannot cost anything if the duty is zero either way. That assumption fails as soon as GST or a CA control is in play, since both are keyed off the same code.

Customs and excise duty are confined to four dutiable categories, and nothing outside them: intoxicating liquors, tobacco products, motor vehicles, and petroleum and biodiesel products. Within these categories, duty can be levied as an ad valorem percentage of customs value (motor vehicles, at a flat 20 percent excise rate, are the clearest example), as a specific rate per litre, kilogram, or stick (alcohol and tobacco are calculated this way, with cigarette duty specifically keyed to weight per stick), or occasionally as a compound of both. Ordinary alcoholic beverages such as stout, porter, ale, and samsu are unusual in also carrying a separate customs duty layer on top of excise duty, a holdover that applies to almost no other product category.

Goods and Services Tax, currently 9 percent, is the charge that actually touches nearly every import. It is levied on the CIF value of the shipment (cost, insurance, and freight), plus any customs or excise duty already assessed, and it applies regardless of the goods' value; Singapore has no general de minimis threshold that exempts low-value commercial imports from GST outright. A parcel worth ten dollars and a shipment worth ten million dollars are subject to the same rate on the same base.

The preferential trade agreement network

Because the general duty rate is already zero for almost everything, Singapore's free trade agreements do comparatively little work for goods imported into Singapore itself. Their value runs the other direction: they determine the rate a good of Singapore origin receives on arrival in a partner market, which is relevant context for any business using Singapore as a manufacturing, processing, or re-export base, even where origin qualification itself sits outside a pure classification and duty lookup.

Singapore maintains one of the widest active FTA networks of any single economy, including bilateral agreements with major partners such as the United States, China, India, Japan, South Korea, and Australia, alongside regional frameworks including the ASEAN Trade in Goods Agreement, the Regional Comprehensive Economic Partnership (RCEP), and the Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP). RCEP alone links Singapore with ASEAN, China, Japan, South Korea, Australia, and New Zealand under a single preferential framework and is scheduled to eliminate tariffs on the substantial majority of traded goods among members as its phase-out schedules mature.

Because Singapore's agreements do not share a single uniform rule of origin, a product that qualifies for preferential treatment into one partner market under CPTPP may not automatically qualify under RCEP or a bilateral agreement on the same facts, even where the underlying manufacturing process is identical. Origin has to be checked agreement by agreement, not assumed to carry across the network.

GST relief and deferment schemes

Because GST, not duty, is the charge that actually lands on ordinary trade, Singapore Customs offers several schemes that manage its timing rather than its rate:

Each scheme requires its own permit application and ongoing conditions; none is available automatically simply by virtue of importing goods.

Principal compliance challenges

The Enthron approach

A determination starts with the product itself: a description, spec sheet, or existing code submitted through the API or app, with Enthron asking for whatever attributes are missing before it commits to a classification. From there, it classifies against the full 8-digit AHTN schedule and resolves everything that hangs off the code in the same determination: dutiable status and the applicable customs or excise rate, the GST base, and the linked Competent Authority product code where one exists. Every determination returns with the 8-digit code, a confidence score, the classification logic applied, and every downstream tariff control triggered, giving a compliance team a defensible record the moment a shipment is questioned, not just a code.

Because Singapore's schedule is amended at the national level more often than the underlying WCO cycle, Enthron treats it as something to monitor continuously rather than configure once. When an AHTN suffix changes, classifications already on file are flagged against the change automatically, rather than surfacing months later at an audit.