Import Documentation and Commercial Invoice Complete Guide

The commercial invoice is the foundation document for every international shipment. It determines how customs authorities assess duties, whether your goods clear or get held, and how your buyer processes payment. A single missing field -- such as omitting the country of origin or listing an incorrect Incoterms code -- can delay clearance by 3 to 7 business days and trigger additional inspection fees ranging from US$200 to US$800 depending on the port.

Every commercial invoice must include these mandatory fields: seller's full legal name and address, buyer's full legal name and address, invoice date and unique invoice number, detailed product description (not just model numbers), HTS or HS code for each line item, quantity and unit of measure, unit price and total value in the transaction currency, Incoterms (FOB, CIF, DDP, etc.), country of origin, and total invoice value. US CBP requires commercial invoices to comply with 19 CFR 141.86, which specifies additional fields like the currency of purchase and whether the goods were produced by the seller or a third party.

For Taiwan brands, a common mistake is using internal product codes instead of descriptive product names on the invoice. Customs officers do not know what "LN-3100X" means. Write "Collagen Peptide Powder, Bovine Source, 300g per unit" instead. Descriptive invoices clear faster because the examining officer can quickly verify the declared HTS code matches the physical product.

Invoice valuation must reflect the actual transaction value -- the price the buyer pays for the goods. Under the WTO Customs Valuation Agreement (adopted by the US, Australia, and Japan), customs authorities use the transaction value as the primary basis for duty assessment. Understating invoice values to reduce duties is customs fraud and can result in seizure of goods, penalties of 4 times the unpaid duties (US), and criminal prosecution in severe cases.

Prepare invoices in English for the US and Australian markets. Japan Customs accepts invoices in English or Japanese, but English is standard for international trade. Use a consistent invoice template across all shipments to build familiarity with your customs broker and reduce processing time. Include your company logo and letterhead -- customs authorities view professionally formatted invoices as an indicator of a legitimate business operation.

The packing list complements the commercial invoice by providing physical details about the shipment: how many cartons, what each carton contains, gross and net weights, and carton dimensions. While customs authorities reference the commercial invoice for value-based assessments, port operators and warehouse staff rely on the packing list for physical handling. A missing or inaccurate packing list causes misrouting at the destination warehouse and can trigger physical examination by customs.

Standard packing list fields include: shipper and consignee details (matching the commercial invoice), shipment reference or purchase order number, carton numbering (e.g., 1/50 through 50/50), itemized contents per carton, net weight and gross weight per carton and total, carton dimensions in centimeters, total volume in cubic meters, and container or pallet quantity. For LCL (less-than-container-load) shipments, include the cubic meter volume per SKU because freight charges for LCL are calculated by volume.

Weight accuracy is critical for two reasons. First, discrepancies between declared weight and actual weight of more than 5 percent can trigger customs inspection under the SOLAS VGM (Verified Gross Mass) regulation for sea freight. Second, Amazon FBA requires shipment weights to match declared values within a tight tolerance -- discrepancies result in receiving delays at the FBA fulfillment center. Invest in a calibrated scale at your Taiwan warehouse and weigh every carton before shipping.

For mixed-SKU shipments (multiple product types in the same container), create a packing list that maps each carton to its contents with sufficient detail for the customs broker to prepare the entry. A carton containing 100 units of Product A and 50 units of Product B should be listed as two line items on the packing list with separate weights and values. This level of detail costs 15 to 20 minutes extra in preparation but saves hours of broker queries during entry filing.

Digital packing lists are increasingly expected. Provide your packing list in both PDF and Excel formats. The PDF serves as the official document for customs filing, while the Excel version allows your broker and freight forwarder to import data directly into their systems without manual re-keying. This reduces transcription errors and speeds up the clearance process by approximately 4 to 8 hours per shipment.

A Certificate of Origin (CO) confirms where your goods were manufactured. It serves two purposes: determining eligibility for preferential tariff rates under free trade agreements (FTAs) and establishing the origin for trade remedy measures like anti-dumping duties. Taiwan brands should obtain COs from the Bureau of Foreign Trade (BOFT) or authorized chambers of commerce such as the Taipei Chamber of Commerce or the General Chamber of Commerce of the Republic of China.

For US imports, a CO is not always required but is strongly recommended for goods valued above US$2,500. If your product is subject to anti-dumping or countervailing duties (common for steel products, certain chemicals, and some food items), an accurate CO protects you from being assessed duties intended for a different origin country. The CO should state "Made in Taiwan" or "Product of Taiwan" -- never abbreviate to "Made in ROC" as this can cause confusion at customs.

Australia accepts COs issued by chambers of commerce recognized by the International Chamber of Commerce. For goods entering Australia under the Australia-New Zealand Closer Economic Relations Trade Agreement or other FTAs, a separate preferential CO or declaration of origin may be required. However, since Taiwan does not have an FTA with Australia as of 2026, standard MFN (Most Favored Nation) tariff rates apply to most Taiwanese goods, making the CO primarily a compliance document rather than a tariff-reduction tool.

Japan requires COs for certain product categories, particularly food products entering under specific tariff rate quotas. The Japan Customs CO requirements specify that the document must be issued by a competent authority in the exporting country. Taiwan's BOFT-issued COs are recognized by Japan Customs. For products entering Japan under the WTO Information Technology Agreement (ITA), which eliminates tariffs on specified IT products, a separate declaration confirming ITA eligibility may be needed.

Keep original COs on file for at least 5 years. US CBP and Australian Border Force can request retroactive verification of origin claims, and failure to produce the CO results in reclassification at a higher duty rate plus potential penalties. Establish a systematic filing process: scan every CO upon issuance, file the original in a secure location indexed by shipment reference number, and provide a digital copy to your customs broker for their records.

The bill of lading (B/L) is both a shipping receipt and a document of title. The ocean carrier issues it to confirm receipt of goods for transport. For Taiwan exporters, the B/L is typically issued by the shipping line (Evergreen, Yang Ming, Wan Hai, or other carriers) or by your freight forwarder as a house bill of lading (HBL). Understanding the difference matters: a master bill of lading (MBL) is the carrier's own document, while the HBL is issued by the forwarder and references the MBL. Customs entries must reference the MBL number for CBP filing in the US.

Key B/L fields to verify before shipment departure: shipper name (must match the commercial invoice seller), consignee name (must match the invoice buyer or the importer of record), notify party (typically the customs broker or consignee's agent at destination), port of loading, port of discharge, container number, seal number, number of packages, gross weight, volume, and a goods description that is consistent with the commercial invoice. Discrepancies between the B/L and commercial invoice are the single most common cause of customs holds.

Choose the correct B/L type for your transaction. An "original" B/L (printed on security paper, issued in 3 originals) is required when the consignee must present the original to claim goods -- common in letter-of-credit transactions. A "sea waybill" (non-negotiable) is used when the consignee is trusted and no document of title is needed -- faster processing since no physical document exchange is required. For Amazon FBA shipments where you are both shipper and importer of record, a sea waybill is sufficient and avoids the risk of lost original B/Ls.

Telex release (also called express release or surrender B/L) is the most common arrangement for Taiwan brands shipping to their own US or Australian entity. The shipper surrenders the original B/L at the origin port, and the carrier notifies the destination port to release cargo without requiring presentation of original documents. This saves 3 to 5 days compared to courier-mailing original B/Ls from Taiwan to the US. Confirm telex release with your carrier before the vessel sails.

Common B/L errors that cause delays: listing the freight forwarder as consignee instead of the actual importer of record (CBP requires the IOR to appear on the B/L), using "said to contain" for goods description when customs requires specific product descriptions, and mismatching container counts between the B/L and the booking confirmation. Review the draft B/L within 24 hours of receiving it from the carrier -- corrections after the B/L is finalized incur amendment fees of US$50 to US$150 per change.

The US requires an Importer Security Filing (ISF, also known as "10+2") to be submitted at least 24 hours before the vessel loads at the origin port. Your customs broker typically files the ISF, but you as the importer must provide 10 data elements including manufacturer name and address, seller name and address, buyer name and address, ship-to party, country of origin, HTS code, container stuffing location, and consolidator name. Late ISF filing triggers a CBP penalty of US$5,000 per occurrence -- this is actively enforced.

For food products entering the US, FDA prior notice must be filed through the FDA Prior Notice System Interface (PNSI) no fewer than 8 hours before arrival by vessel. The prior notice must include the FDA Product Code, manufacturer details, and anticipated arrival information. Failure to file prior notice results in detention and refusal of the food shipment. If your product falls under FDA jurisdiction (food, dietary supplements, cosmetics, medical devices), your customs broker must be experienced with FDA submissions.

Australia requires an Import Declaration (previously called the "Customs Entry") filed through the Integrated Cargo System (ICS). For goods valued above AUD$1,000, a Full Import Declaration (FID) is mandatory. Additionally, certain products require permits from the Department of Agriculture, Fisheries and Forestry (DAFF) -- particularly food products, plant-derived materials, and wooden packaging. Australia's biosecurity regulations are among the strictest in the world: wooden pallets must be ISPM-15 compliant (heat-treated and stamped), or your container will be held for fumigation at a cost of AUD$500 to AUD$1,500.

Japan requires an Import Declaration (Yunyu Shinkoku) filed through NACCS. For food products, a separate notification to the Ministry of Health, Labour and Welfare (MHLW) under the Food Sanitation Act is required. This notification must include ingredients, additives, and manufacturing process details. MHLW inspection can add 5 to 10 business days to clearance if your product is selected for laboratory testing. Electrical products require a Notification of Import under the Electrical Appliances and Materials Safety Act (PSE certification), filed before or at the time of import.

Maintain a destination-specific document checklist for each market. Your checklist for US shipments should include: commercial invoice, packing list, bill of lading, ISF confirmation, CO (if applicable), FDA prior notice (if food or supplement), TSCA certification (if chemical product), FCC declaration (if electronic device), and CPSC general certificate of conformity (if consumer product). Creating a standardized checklist reduces the risk of missing a document from approximately 12 percent (industry average for first-time exporters) to under 2 percent.