Import compliance in Singapore runs entirely on the Networked Trade Platform (NTP), the AHTN 2022 tariff schedule, and the 9% goods and services tax (GST) that took effect on 1 January 2024. The seven consultancies below operate between Singapore Customs, the other government agencies (OGA), and your declaration system — fixing classification errors, managing controlled-goods permits, and supervising GST recovery before auditors do it for you.
Singapore Customs does not offer advisory services for corporate importers. It issues permits, collects duty and GST, and performs post-clearance audits. When you get a demand notice under section 82 of the Customs Act, you need an external party that already knows the tariff line you misdeclared. The seven firms in this list are the ones actually running trade compliance practices in this country, not generalist freight forwarders who happen to hold a broker licence.
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1. EY Global Trade & Customs (Singapore)
EY maintains a full-time customs and trade team inside its Marina Boulevard office, staffed heavily with ex-Singapore Customs investigators. Their practical value sits in three places: HS classification for electronics, the Strategic Goods (Control) Act (SGCA) filtering, and SAP GTS / ONESOURCE implementation.
They handle the hardest import category in Singapore: semiconductor equipment moving through Changi Airfreight Centre under temporary importation. When contractors bring in wafer fabrication tools for less than 180 days, EY structures the temporary import guarantee and the subsequent re-export reconciliation. They also run GST recovery for goods rejected at inspection — a process most freight brokers refuse to touch because you have to prove to Singapore Customs that the goods were technically never imported.
2. Deloitte Customs & Global Trade
Deloitte’s Singapore practice concentrates on post-clearance audits and AEO certification. Under Singapore’s Authorised Economic Operator programme, a certified company can move containers through the FTZ at Keppel Container Terminal with a reduced examination rate — roughly 30% fewer physical checks compared to non-AEO importers. Deloitte builds the Standard Operating Procedures required for the Singapore Customs assessment, including the data architecture that logs every permit declaration against your NTP transaction history.
They are also the go-to firm for free trade zone disputes involving Jurong Port. Goods holding inside a licensed FTZ attract zero GST until they are moved into the customs territory, and Deloitte defends the FTZ paperwork when you trigger an investigation by commingling bonded and local inventory.
3. KPMG Trade & Customs
KPMG has the strongest practice for imported telecommunications and broadcasting equipment, where Singapore’s Info-communications Media Development Authority (IMDA) registration historically runs parallel to customs clearance. A typical scenario: you import 1,000 units of Wi-Fi 6E access points, the equipment requires IMDA type approval, and KPMG coordinates the approval letter with the permit application through the NTP.
Their team also handles over-declaration of permitted quantity. Each NTP permit is a single shot — there is no amendment after approval. When a shipment arrives short or damaged, KPMG files the manual permit cancellation on your behalf and prepares the supporting documents such as the airline’s proof of short-landing. That prevents you from paying GST on a quantity that never physically arrived.
4. PwC Customs & International Trade
PwC owns the dispute resolution space for import valuation and origin. They handle the objections to Singapore Customs’ valuation adjustments under section 52 of the Customs Act, which covers related-party transactions. An import from a related overseas manufacturer must be priced at the “transaction value” unless you can demonstrate the price was not influenced by the relationship. PwC runs the comparative pricing analysis against unrelated buyers in Malaysia and Thailand to defend the declared value.
They also manage the downside of the RCEP and CPTPP rules of origin. Their team calculates regional value content (RVC) on a transaction-by-transaction basis, and they will issue a written opinion before you claim preferential tariffs at the port of discharge. The 2024 import GST increase to 9% increased the stakes — a wrong origin claim does not just cost duty, it triggers a GST withholding review.
5. BDO Trade & Customs (Singapore)
BDO is the practical alternative for food and health product importers dealing with the Singapore Food Agency (SFA) and the Health Sciences Authority (HSA). Importing processed food requires a company licence plus individual product registration if the item is supplemented food or food containing novel ingredients. BDO writes the compliance files that prove to SFA your import sources match the approved manufacturing site list.
For the HSA side, they handle therapeutic medicines under the Health Products Act. Their consultants routinely prepare the import permit for controlled drugs and psychotropic substances, coordinating both HSA approval and the Singapore Customs permit on the same NTP submission window. They are also recognised for TCM proprietary medicines, a category where most large firms refuse to do the work because the documentation requirements are unusually dense.
6. WTS Tax Singapore
WTS Tax runs one of the more aggressive customs duty and import GST advisory practices in the city-state. They specialise in excise duty recovery — specifically spirits and motor vehicles, where Singapore Customs applies high specific duties on top of 9% GST. A single brandy container entering via PSA Brani Terminal can accrue over S$150,000 in duty, so getting the tariff line wrong is catastrophic. WTS reviews the chemical composition against AHTN 2022 before you lodge that green permit.
They also handle the overseas vendor registration (OVR) angle. e-commerce platforms that are registered for GST under the OVR regime can collect import GST on low-value goods (below S$400) at the point of sale. WTS reconciles those OVR charges against the import GST paid on the same goods when they land, ensuring you do not pay GST twice through different collection mechanisms.
7. Ayming Singapore
Ayming’s import compliance unit is a lower-volume but highly specialised shop for goods with customs duty rates above zero. While 97% of Singapore tariffs are zero-rated, the remainder covers tobacco, alcohol, petroleum products, and specific chemicals. Ayming handles the paperwork for chemicals regulated under the Environmental Protection and Management Act — bringing in precursors requires an NEA hazardous substances permit before you can even touch a customs permit.
They also run the backward-audit work for imported machinery that has been temporarily imported and then sold in Singapore. The two-year deadline for temporary importation is strictly policed by Singapore Customs, and Ayming rebuilds the import history when the temporary guarantee is about to lapse — most often converting temporary import permits into outright import declarations and paying the deferred GST plus any applicable duty.
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Comparison of the Seven Practices
| Consultancy | Core Import Compliance Function | Best For |
|---|---|---|
| EY Global Trade & Customs | HS classification, SGCA, SAP GTS implementation | Semiconductor equipment temporary imports |
| Deloitte Customs & Global Trade | Post-clearance audit defence, AEO certification | Keppel FTZ container inspections |
| KPMG Trade & Customs | IMDA-type approval coordination, permit cancellation | Telecom hardware imports |
| PwC Customs & International Trade | Valuation disputes, RCEP/CPTPP origin claims | Related-party import pricing |
| BDO Trade & Customs | SFA and HSA permits, product registration | Food and health product imports |
| WTS Tax Singapore | Excise duty recovery, OVR GST reconciliation | Alcohol, vehicles, and e-commerce goods |
| Ayming Singapore | NEA hazardous substances, temporary import conversion | Controlled chemicals and machinery |
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All seven firms are located within walking distance of the central business district, and every one of them charges by professional hour rather than by permit volume. If you are the party signing the NT4 declaration, the investigation will come to you first — before you call a firm, print your last 12 months of NTP transaction history and have it ready for the first meeting.
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