Commercial Invoice for Customs Clearance: Every Field You Must Include

Why Your Commercial Invoice Template for Customs Matters

The commercial invoice is the single most important document in international trade. Whether you are a first-time importer or an experienced trader, having a reliable commercial invoice template for customs ensures your goods clear the border without delays. Customs authorities use this document to determine the value of your goods, calculate duties and taxes, verify the origin of products, and assess whether any restrictions or licences apply.

A well-prepared commercial invoice clears customs quickly. A poorly prepared one causes delays, additional inspections, and sometimes penalties. These requirements apply universally — whether you are importing into the US, UK, EU, Australia, or any other country. For a broader overview of the customs process, see our first-time importer's guide to customs clearance. Getting the invoice right is not difficult, but it requires attention to detail.

Every Field Required on a Commercial Invoice for Customs

1. Seller (Exporter) Details

The full name, address, and contact details of the company or individual selling the goods. This is typically your supplier or manufacturer.

Include:

• Company registered name
• Full address including country
• Phone number and email
• Tax identification number or business registration number (e.g., VAT number, EIN, ABN)

2. Buyer (Importer) Details

Your company details — the entity importing the goods.

Include:

• Company registered name (must match your customs registration)
• Full address including country
• Customs registration number — EORI (UK/EU), importer number or EIN (US), ABN (Australia)
• Tax registration number (if applicable)
• Phone number and email

3. Invoice Number and Date

Every commercial invoice must have a unique invoice number and the date it was issued. Customs uses this to identify and reference the shipment. Your supplier should assign sequential invoice numbers.

Tip: Keep a record of all invoice numbers. Customs authorities (HMRC in the UK, CBP in the US, etc.) may ask for them during audits, and you will need them if you ever query a customs entry.

4. Description of Goods

This is where most customs delays originate. Your description must be specific enough for customs to identify exactly what the product is and verify the HS code classification.

Bad descriptions:

• "Goods"
• "Merchandise"
• "Samples"
• "Accessories"
• "Parts"
• "As per PO"

Good descriptions:

• "Stainless steel double-wall vacuum insulated water bottles, 500ml capacity, food-grade 18/8 stainless steel"
• "Women's knitted cotton jumpers, 100% organic cotton, sizes S-XL, assorted colours"
• "Bluetooth wireless earbuds with charging case, lithium-ion battery 40mAh per earbud"

Include the material composition, intended use, dimensions or capacity where relevant, and any distinguishing features.

5. HS Code (Harmonised System Code)

Each product line on the invoice should include its HS code — the internationally standardised numerical classification for traded goods. The first 6 digits are universal; additional digits vary by country (the US uses 10-digit HTS codes, the UK uses 10-digit commodity codes, and the EU uses 8-digit CN codes).

Why it matters: The HS code determines the duty rate applied to your goods. An incorrect HS code can result in overpaying duty (costing you money) or underpaying duty (which can lead to fines and back-charges from customs authorities).

If you are unsure of the correct HS code, consult your country's tariff lookup tool (e.g., USITC HTS search for the US, UK Trade Tariff on GOV.UK, or TARIC for the EU) or your customs broker.

6. Quantity

State the exact number of units, specifying the unit of measurement:

• Number of pieces, sets, pairs, or rolls
• Weight in kilograms (for goods sold by weight)
• Volume in litres (for liquids)

Be precise. "100 pieces" is better than "1 carton" because customs need to know the actual quantity, not just the packaging.

7. Unit Price

The price per unit in the agreed currency. This should match what you actually paid (or will pay) for the goods. Do not under-declare or over-declare values — customs authorities have databases of typical values and will query outliers.

8. Total Value

The total value of each line item (unit price × quantity) and the invoice grand total. This figure is the starting point for customs valuation.

9. Currency

Clearly state the currency of the transaction. Use standard ISO currency codes:

• GBP (British Pound)
• USD (US Dollar)
• EUR (Euro)
• CNY (Chinese Yuan)

If the invoice is in a foreign currency, customs will convert it to the local currency using official exchange rates for duty and tax calculation purposes (e.g., HMRC rates in the UK, CBP rates in the US).

10. Incoterm (Terms of Delivery)

The agreed Incoterm (e.g., FOB, CIF, EXW, DDP) must be stated on the invoice. This is critical because it tells customs which costs are included in the invoice price and which need to be added to arrive at the customs value.

For example:

• FOB Shanghai — the invoice price includes costs up to loading on the vessel. Freight and insurance must be added for customs valuation.
• CIF London — the invoice price includes cost, insurance, and freight. Customs value is approximately the invoice value.
• EXW Factory — the invoice price is just the goods at the factory gate. All transport, handling, and insurance costs must be added.

11. Country of Origin

The country where the goods were manufactured or substantially transformed. This is not necessarily the country you are buying from — if you purchase from a trading company in Hong Kong but the goods are made in mainland China, the country of origin is China.

Country of origin determines:

• Whether preferential duty rates apply (under trade agreements)
• Whether anti-dumping duties apply
• Whether any import restrictions or sanctions are in place

12. Payment Terms

State how and when payment is made:

• T/T (Telegraphic Transfer) — 30% deposit, 70% before shipment
• Letter of Credit (L/C)
• Open Account — net 30/60/90 days
• PayPal, Alibaba Trade Assurance, etc.

13. Shipping Marks

The identifying marks on the outer packaging — typically the buyer's name or initials, a reference number, the destination port, and the package number (e.g., 1/20, 2/20, etc.).

These help customs and logistics providers match the invoice to the physical goods.

14. Total Weight (Gross and Net)

• Gross weight — total weight including all packaging
• Net weight — weight of the goods only, excluding packaging

Both should be stated in kilograms. Freight charges are often based on gross weight, while duty calculations sometimes reference net weight.

15. Number of Packages

The total number of cartons, pallets, crates, or other packages in the shipment. This must match the packing list and the bill of lading.

Common Commercial Invoice Mistakes That Cause Customs Delays

Vague Product Descriptions

Customs officers cannot clear goods described as "household items" or "electronics." They need enough detail to verify the HS code and value. A description that is too vague will trigger an inspection or a request for additional information, adding days to your clearance time.

Missing or Incorrect HS Codes

If the HS code on the invoice does not match the actual product, customs may hold the goods, reclassify them at a higher duty rate, or issue a penalty. Always double-check your HS codes before shipping.

Values That Do Not Match the Incoterm

If your invoice says FOB but the value includes freight charges, the customs value will be inflated and you will overpay duty. Conversely, if the invoice says CIF but the value only covers the goods (not freight and insurance), customs may challenge the declared value as being too low.

Ensure the invoice value accurately reflects what is included under the stated Incoterm.

Under-Declaring Value

Some importers ask suppliers to issue invoices with artificially low values to reduce duty. This is customs fraud. Customs authorities worldwide (HMRC, CBP, EU customs) have sophisticated tools to detect under-declaration, including reference price databases and data analytics. Penalties include seizure of goods, financial penalties, and criminal prosecution in serious cases.

Always declare the true transaction value.

Inconsistent Information Across Documents

If the commercial invoice says 500 pieces but the packing list says 480, or the bill of lading shows a different weight, customs will hold the shipment until the discrepancy is resolved. Before shipping, cross-check all documents for consistency.

How to Complete the Customs Value Declaration on Your Invoice

The customs value is the value on which duty and import taxes are calculated. In most countries (including the UK and EU), it is based on the CIF value (cost, insurance, and freight to the border). In the US, customs value is typically based on the FOB value (transaction value at the port of export).

If your Incoterm is FOB, you need to add:

• International freight charges
• Insurance costs (actual or notional)

If your Incoterm is EXW, you also need to add:

• Inland transport to the port of origin
• Export handling charges
• International freight
• Insurance

If your Incoterm is CIF or higher, the invoice value is typically close to the customs value, though some adjustments may still be needed (e.g., royalties, buying commission adjustments).

Your customs broker will calculate the exact customs value, but having accurate and complete information on the commercial invoice makes their job easier and reduces the chance of errors.

Tips for Accurate Commercial Invoices

1. Use a template — create or obtain a standard commercial invoice template and use it consistently. The Invoice Generator can help you create compliant invoices quickly.
2. Request drafts before shipment — ask your supplier to send a draft invoice for review before the goods ship. Correcting mistakes before shipment is easy; correcting them at customs is expensive.
3. Keep copies of everything — customs authorities require you to retain import documentation (6 years in the UK, 5 years in the US and EU). Store digital copies in an organised filing system.
4. Match documents — ensure the commercial invoice, packing list, bill of lading, and certificate of origin all contain consistent information.
5. State values honestly — always declare the true transaction value. The short-term duty savings from under-declaration are never worth the risk.
6. Include HS codes proactively — even if your supplier does not normally include them, request that they add the correct HS codes to the invoice. This speeds up customs clearance significantly.

Commercial Invoice Checklist for Customs Clearance

Before your goods ship, verify your commercial invoice includes:

• Seller name, address, and registration number
• Buyer name, address, customs registration number (EORI, EIN, etc.), and tax number
• Unique invoice number and date
• Detailed product descriptions
• HS codes for each line item
• Quantities with units of measurement
• Unit prices and total line values
• Grand total and currency (ISO code)
• Incoterm and named place
• Country of origin for each product
• Payment terms
• Shipping marks
• Gross and net weights in kg
• Total number of packages

Get these right, and your goods will clear customs smoothly. Get them wrong, and you are looking at delays, additional charges, and unnecessary stress.

For the full list of documents you need beyond the commercial invoice, see our import documentation checklist. Use the Import Calculator to estimate your duty and taxes before your goods ship.