Frequently asked questions

The Harmonized System (HS) is the international goods nomenclature maintained by the World Customs Organization (WCO), used by more than 200 countries and territories and covering roughly 98% of world trade. The first 6 digits (chapter–heading–subheading) are identical worldwide; each country extends them to 8, 10 or even 13 digits for tariff and statistical purposes (HTS in the US, CN/TARIC in the EU, AHTN-based 8 digits in Vietnam).

The six General Interpretative Rules are the legally binding method for classifying every product. GIR 1: classify by heading text and Section/Chapter Notes first. GIR 2: incomplete/unassembled goods and mixtures. GIR 3: when two headings compete — (a) most specific wins, (b) essential character, (c) last in numerical order. GIR 4: goods most akin. GIR 5: cases and packing. GIR 6: apply the same logic at subheading level. Customs authorities worldwide argue classification disputes in exactly these terms.

Only the first 6 digits are harmonized. Beyond HS6, each country builds its own tariff lines: the US uses 10-digit HTS, the EU uses 8-digit CN plus 10-digit TARIC for imports, Vietnam uses 8 digits under the ASEAN AHTN. National legal notes, tariff engineering and trade-remedy measures can also push borderline products into different lines. That is why our tool always asks for the country of classification.

Consequences range from paying the duty difference plus interest, to administrative penalties, shipment holds, loss of FTA preference, and in serious repeated cases fraud investigations. In the US, CBP can issue penalties under 19 U.S.C. §1592 based on negligence, gross negligence or fraud. In Vietnam, false declaration leading to underpaid tax is typically fined 10–20% of the tax shortfall plus late-payment interest. Correct classification is a legal compliance issue, not a formality.

An advance ruling is a written decision from customs that fixes the classification of your product before import. The US issues rulings through CBP (searchable in CROSS); the EU issues Binding Tariff Information (BTI) valid 3 years across all member states; Vietnam issues 'xác định trước mã số' decisions; China issues advance rulings valid 3 years. Request one whenever the product is new, high-volume, borderline between headings, or duty rates differ significantly between candidate codes.

The WCO revises the HS every ~5 years. HS 2022 introduced 351 sets of amendments: new subheadings for e-waste (heading 8549), unmanned aircraft/drones (8806), smartphones (8517.13), 3D printers (8485), novel tobacco and nicotine products (2404), among others. Countries adopted HS 2022 on different dates, so always check which version the destination tariff is based on.

No. It is a customs classification research engine, not a guessing chatbot. It identifies the country of classification, searches official sources first (WCO, national customs, tariff databases, rulings), reasons through GIR 1–6, compares candidate codes, and returns a cited result with an honest confidence level. Expert-verified knowledge from our licensed customs specialists is injected as a top-priority source.

A High confidence result requires at least one official or expert-verified source plus GIR analysis and clear citations. Blog-only evidence never exceeds Medium/Low. Low-confidence cases automatically recommend expert review. The tool never guarantees 100% accuracy — the official code always depends on the actual product dossier and the customs authority's decision.

Describe what the item IS, its material or composition, its function and principle of operation, technical specs (power, capacity, dimensions), whether new or used, and its intended industry. You can also upload a spec sheet, catalogue, photo or screenshot — the DocumentIngest agent extracts the facts before classification. The more precise the description, the higher the achievable confidence.

During the growth stage, expert review is free. A customs classification specialist may review the AI result, correct the code where needed, cite the legal basis (rulings, official letters, chapter notes) and issue professional notes. Every verified conclusion can also feed the expert knowledge base, making future answers for similar products more accurate.

The Harmonized Tariff Schedule of the United States (HTSUS) is the 10-digit US tariff: 6 HS digits + 2 US tariff digits + 2 statistical digits. The US International Trade Commission (USITC) maintains the schedule at hts.usitc.gov, while US Customs and Border Protection (CBP) enforces classification at the border. Importers must use the full 10 digits on entry documents.

CROSS (Customs Rulings Online Search System) is CBP's public database of classification rulings. Searching CROSS for products similar to yours is the single most persuasive evidence in US classification: a ruling on a like product shows how CBP actually applies the GIRs and chapter notes. Our research agent searches CROSS automatically for US cases.

File an electronic ruling request (eRulings) with CBP under 19 CFR Part 177, describing the product in full with specs, composition, samples or photos. CBP normally answers within 30 days for classification requests. The ruling is binding on CBP nationwide for identical merchandise and is the strongest protection against reclassification at entry.

Section 301 additional duties on Chinese-origin goods are keyed to 8-digit HTS subheadings on the USTR lists, on top of the normal duty. The applicable Chapter 99 code (e.g. 9903.88.xx) must be declared together with the regular HTS code. Classification therefore directly decides whether a China-origin product carries an extra 7.5%–25% (or higher under later actions). Origin, not shipping route, controls — transshipment to evade 301 duties is criminally enforced.

Under the Customs Modernization Act, the importer of record bears legal responsibility to classify and value goods with reasonable care. Relying blindly on a supplier's code is not reasonable care. Documented classification analysis (GIR reasoning, rulings comparison, expert advice) is exactly what CBP expects to see — and what this platform produces for every search.

Section 321 de minimis allows duty-free entry for shipments up to 800 USD per person per day, widely used in e-commerce. Note: policy tightening has been under way for China-origin e-commerce and goods subject to Section 301; verify the current status before relying on de minimis for volume shipping, as rules have been changing.

The EU Combined Nomenclature (CN) is 8 digits (HS6 + 2), used for exports and statistics, updated every year by Commission regulation. TARIC adds digits 9–10 (plus possible additional codes) encoding EU measures: anti-dumping duties, suspensions, quotas, prohibitions. Imports into the EU are declared at TARIC (10-digit) level.

Binding Tariff Information (BTI) is the EU's advance classification decision, applied for through the EU Customs Trader Portal. A BTI is valid for 3 years, binding on all EU member state customs authorities AND on the holder, who must declare goods under the BTI code. If you trade the same product into several EU countries, one BTI covers all of them.

EU trade-defence measures are published against specific CN/TARIC codes and origins, often with company-specific TARIC additional codes. A small classification shift can mean the difference between 0% and duties above 60% (e.g. fasteners, e-bikes, steel products from certain origins). Checking TARIC measures for each candidate code is a mandatory step of our EU research flow.

Use the European Commission's TARIC consultation database (ec.europa.eu/taxation_customs) or a member state mirror such as the German EZT or Dutch tariff. National portals display the same TARIC measures. For legal certainty on classification itself, the CN Explanatory Notes, CJEU case law and Classification Regulations published in the Official Journal are the controlling sources.

The EU Carbon Border Adjustment Mechanism applies to defined CN codes in cement, iron and steel, aluminium, fertilisers, hydrogen and electricity. If your product's CN code is in the CBAM annex, importers must report embedded emissions and, once the definitive regime applies, surrender CBAM certificates. Classification therefore determines CBAM exposure — one more reason to fix the CN code correctly and early.

Vietnam's export–import classification list is 8 digits, based on the ASEAN Harmonised Tariff Nomenclature (AHTN 2022), promulgated by Circular 31/2022/TT-BTC of the Ministry of Finance and applied from 30/12/2022. Preferential (MFN) duty rates are set by Government Decree (currently the Decree 26/2023/ND-CP framework), while FTA rates come from separate decrees per agreement.

Under Article 28 of the Customs Law and Articles 23–24 of Decree 08/2015/ND-CP (amended by Decree 59/2018), a trader may file a dossier with the General Department of Customs at least 60 days before the first import/export. The written determination is applied nationwide; validity is up to 3 years while the legal basis and actual goods remain unchanged. It is the safest instrument for high-value or borderline products in Vietnam.

Classification analysis is performed by the Customs Verification Department (Cục Kiểm định Hải quan); results are issued as classification notices ('thông báo kết quả phân loại') of the General Department of Customs. Official letters (công văn) interpreting individual products, plus Circular 14/2015/TT-BTC on classification methodology, are the key references. Post-clearance audits can revisit classification up to 5 years back.

Under Decree 128/2020/ND-CP (amended by Decree 102/2021), misdeclaration leading to a tax shortfall is generally fined 10–20% of the shortfall (when not amounting to evasion), plus full back-tax and 0.03%/day late-payment interest. Evasion-level conduct carries fines of 1–3 times the evaded tax. Repeated wrong codes also downgrade the company's customs compliance ranking, triggering more red-channel inspections.

Every certificate of origin (Form E, CPTPP, EVFTA, RCEP…) states the HS code, and the product-specific origin rule (PSR) is written per HS heading/subheading. If the declared import code differs from the C/O code at heading level, customs can reject the preferential rate. When manufacturing shifts tariff headings (CTC criteria), correct classification of both materials and finished goods decides whether origin is conferred at all.

Import materials and exported products are reconciled in the annual settlement report (báo cáo quyết toán) by HS code and norm. Inconsistent codes between import declarations, production norms and export declarations are a top audit finding, leading to tax assessment on the difference. Locking a correct, consistent HS mapping for every material and product from day one is far cheaper than defending an audit later.

China declares imports with a 13-digit code: the 8-digit tariff code (HS6 + 2 national digits) plus additional digits including CIQ inspection/quarantine codes. Beyond the code itself, GACC requires 'declaration elements' (申报要素) — mandatory descriptive fields per heading (material, function, brand, model…). Wrong or incomplete elements cause holds even when the code is right.

Yes. Under GACC Decree No. 236 (2018), enterprises registered with China Customs can apply for an advance ruling on classification, origin or valuation to the customs district where they are registered. The ruling is issued in principle within 60 days and is valid for 3 years. For Vietnamese exporters, coordinating the Chinese importer's ruling with the Vietnamese export code prevents cross-border code mismatches.

Both countries build on HS/AHTN, but national digits and inspection requirements differ. Frequent friction points: agricultural goods (CIQ quarantine codes and GACC registrations under Decrees 248/249), foodstuffs, chemicals subject to hazardous catalogues, and machinery where China's declaration elements demand specs the Vietnamese invoice does not show. Align HS6 first — both sides can then defend their national extensions independently.