A commercial invoice is a mandatory legal document for all international shipments. It declares the goods, their value, and the terms of the transaction to customs authorities — who use it to calculate duties and decide whether to release or inspect the shipment. Missing or inaccurate invoices are among the top causes of customs delays, costing businesses $40–$150 per day in storage fees.
Understanding the Commercial Invoice – A Small Document with a Big Role
When it comes to international shipping, one small document can make all the difference between a delayed package stuck at customs and a smooth delivery that arrives on time. The commercial invoice isn't just a technical form – it's a vital legal document that outlines the details of the transaction, serves as a declaration to customs, and ensures that the shipping process flows efficiently. In this article, we'll dive into the essentials of the commercial invoice: what it includes, why accuracy matters, and how to complete it correctly to avoid issues, save time, and reduce costs.
Understanding the Commercial Invoice
A well-prepared commercial invoice is crucial for ensuring that shipments are delivered quickly and accurately. This guide will explain what a commercial invoice includes, why accuracy is essential, and provide detailed instructions on how to properly complete one.
What is a Commercial Invoice?
A commercial invoice is a legal document between a seller and a buyer that details the products sold and the payment due. It is used by customs to determine duties and is necessary for international trade. The commercial invoice acts as a customs declaration by the exporter and must include specific information such as the identities of the seller and buyer, a description of the goods, the country of manufacture, and the Harmonized System codes. Typically, a commercial invoice will also require a statement of accuracy and a signature from the issuer.
Based on ShippingToGo's shipping data, documentation errors — including incomplete or incorrect commercial invoices — account for approximately 30% of all customs clearance delays experienced by our customers. Correctly completing your commercial invoice the first time dramatically reduces the risk of your shipment being held.
Is a Commercial Invoice Always Necessary?
For e-commerce shipments, a commercial invoice is mandatory, whereas postal shipments may require a CN22 or CN23 form. To avoid delays, it's recommended to always include all necessary documentation regardless of shipment type or declared value.
The Importance of an Accurate Commercial Invoice
Accuracy in completing a commercial invoice is crucial because:
- It prevents delays caused by discrepancies between declared and actual goods.
- It ensures goods are properly classified, and correct taxes and duties are applied.
- It meets legal requirements for international shipping.
- It protects you from fines and penalties for undervaluation or misclassification.
How to Accurately Complete a Commercial Invoice
To avoid issues and ensure timely delivery, the commercial invoice should include the following fields, all completed accurately:
| Field | What to Include | Why It Matters |
|---|---|---|
| Seller/Exporter Address | Full name, address, country | Identifies the shipper for customs |
| Buyer/Importer Address | Full name, address, country | Specifies the destination for goods |
| Tariff Code (HS Code) | 6–10 digit code per product | Customs uses this to calculate duties |
| Description of Goods | Specific, not vague — e.g. "cotton t-shirt, men's" not "clothing" | Prevents inspection flags |
| Reason for Export | Sale, gift, sample, repair, etc. | Determines applicable duty rates |
| Declared Value & Currency | Transaction value in the correct currency | Basis for duty and tax calculation |
| Delivery Terms | DDP (Delivered Duty Paid) or DDU | Defines who pays duties |
| VAT / EORI Number | Your tax registration numbers | Identifies you as a registered trader |
| Signature | Authorized person's signature | Validates the accuracy of the document |
- Your Address: Identifies the sender.
- The Receiver's Address: Specifies the destination of the goods.
- The Tariff Code and Description of the Goods: Essential for customs to determine appropriate taxes and duties.
- The Reason for Export: Clarifies the purpose of the shipment (e.g., commercial, gift, sample).
- The Value of the Goods and Currency: Indicates the cost of the goods in the currency of the destination country.
- The Delivery Terms: Details who is responsible for shipping costs and taxes.
- Your VAT and EORI Numbers: Identifies you as a registered trader; these are obtainable from your local tax authority.
- Your Signature: Validates the accuracy of the information on the invoice.
Common Commercial Invoice Mistakes That Cause Customs Delays
The following errors are among the most frequently seen in customs-held shipments, based on ShippingToGo's analysis of delayed shipments:
- Vague product descriptions — Writing "electronics" instead of "wireless earbuds, model XZ100" triggers manual inspection.
- Missing or wrong HS codes — Incorrect tariff classification is one of the top causes of shipment holds.
- Undervaluing goods — Declaring $10 for a $200 item is considered customs fraud and can result in fines or seizure.
- Wrong currency — Declaring value in the wrong currency confuses duty calculations.
- No country of origin — Required for preferential trade agreements and duty rate determination.
- Missing signature — An unsigned commercial invoice is not legally valid for customs purposes.
For automated customs documentation that reduces these errors, see our guide to preventing customs clearance delays.
Commercial Invoice vs. Proforma Invoice vs. CN22/CN23
Understanding the differences between these documents helps you prepare the right paperwork for each shipment type.
| Document | When Used | Purpose |
|---|---|---|
| Commercial Invoice | All international commercial shipments | Official customs declaration; duty calculation |
| Proforma Invoice | Before shipment; for quotes / pre-approval | Preliminary price agreement; import permit applications |
| CN22 | Postal parcels under $300 USD | Simplified customs form for low-value postal items |
| CN23 | Postal parcels over $300 USD | More detailed postal customs declaration |
Additional Resources
For further assistance, you can download commercial invoice templates from our website, where you'll also find additional guidance and a helpful YouTube tutorial on filling out your commercial invoices.
By adhering to these guidelines and utilizing the available resources, you can ensure compliance with commercial invoice requirements and facilitate efficient and reliable deliveries for your business.
Related guides: Customs Clearance Delays: Top Causes and Prevention | Air Transport Shipping Guide | eCommerce Shipping Costs Explained
Frequently Asked Questions
What is a commercial invoice in shipping?
A commercial invoice is a legal document between seller and buyer describing the goods shipped, their value, country of origin, and terms of sale. Customs authorities use it to assess duties and taxes and to verify that the shipment complies with import regulations. It is mandatory for all international commercial shipments.
When is a commercial invoice required?
A commercial invoice is required for all international e-commerce and commercial courier shipments. Postal shipments under a certain value may use CN22 or CN23 forms instead. To avoid customs delays, always include a fully completed commercial invoice regardless of shipment value or method.
What information must a commercial invoice include?
A commercial invoice must include: seller and buyer names and full addresses, itemized description of goods, HS/tariff codes, declared value and currency, country of origin, reason for export (sale/gift/sample), delivery terms (DDP or DDU), VAT/EORI numbers if applicable, and the seller's authorized signature.
What happens if the commercial invoice is incorrect?
Incorrect invoices trigger customs holds. Shipments can be detained for manual inspection, incurring storage fees of $40–$150 per day. Serious errors such as deliberately undervaluing goods can result in fines, seizure of the shipment, or forced re-export at the sender's cost.
What is an HS code and where do I find it?
An HS code (Harmonized System code) is a 6–10 digit number that classifies products for international trade. Customs uses it to determine applicable duty rates. You can find HS codes using the World Customs Organization database, your government's customs tariff portal, or ShippingToGo's integrated HS code lookup tool.
How many copies of the commercial invoice do I need?
Most international shipments require 3 copies of the commercial invoice: one for the carrier, one for the destination country customs authority, and one copy retained by the shipper. Some countries require additional copies. DHL, FedEx, and UPS typically require the invoice to be attached to the outside of the package.
