Commercial Invoice: What It Is, When You Need One (vs Tax & Proforma)

A commercial invoice is the customs document that travels with an international shipment. It tells the importing country's customs authority what's in the box, what it's worth, who's sending it, and who's receiving it. Customs uses it to assess duties and taxes, decide whether to inspect the shipment, and clear it for delivery.

It is not a request for payment in the usual sense. If you're shipping a product the buyer has already paid for, the commercial invoice is essentially a customs declaration with payment terms attached. If you're shipping a sample, gift, or replacement, the commercial invoice still has to declare a value — but the buyer isn't paying that value.

This guide explains exactly what a commercial invoice is, when you legally need one, what fields are required, and how it differs from a tax invoice, a proforma invoice, and a regular sales invoice.

When you need a commercial invoice

You need one any time goods cross an international border. That includes:

A US business shipping a product to a UK customer
A small e-commerce store shipping to Canada
A consultant shipping a physical deliverable (printed report, prototype, hardware) abroad
An individual shipping a personal item internationally (yes, even a birthday gift)

You do not need a commercial invoice for:

Domestic shipments within the same country
Digital deliverables (software, design files, written reports delivered by email) — no physical goods crossing borders
Service-only freelance work — your normal invoice is enough; there's no shipment

If your freelance or small-business work is purely digital, you'll rarely encounter commercial invoices. They become relevant the moment you ship something physical across a border — even a single laptop or a box of printed brochures.

What a commercial invoice must include

Customs authorities have published required fields. They vary slightly by country, but the core list is consistent:

Mandatory fields

Seller (exporter) name and address — including country
Buyer (importer) name and address — including country
Ship-to address — if different from the buyer
Invoice number and date
Description of each item — specific enough that customs can classify it (don't just write "gift" or "samples")
Quantity of each item
Unit value and total value of each item
Currency of the values stated
Country of origin for each item — where it was manufactured, not where it's shipping from
HS code (Harmonized System code) — international tariff classification, 6 to 10 digits
Incoterms — who pays for shipping and customs (FOB, CIF, DAP, DDP, EXW)
Reason for export — sale, gift, sample, return, repair
Total weight and number of packages

Optional but strongly recommended

Tax IDs of both parties — EIN for the US seller; VAT/GST number for the buyer
Signature of the seller — many countries technically require an ink signature; in practice a digital signature usually clears
Statement of origin — a short certification that the origin is correctly declared
AES filing reference — for US exports over $2,500 or requiring an export license, the Automated Export System filing reference

If any mandatory field is missing or unclear, customs will hold the shipment until clarified. "Held in customs" is the most common reason an international shipment is days or weeks late.

How to fill out the value field (and why it matters)

The value you declare on the commercial invoice is what customs uses to assess duty and import tax. It's also a legal declaration — under-declaring is fraud.

Three rules:

For sold goods, the value is the price the buyer paid. Not a "discounted" or "wholesale" version of it.
For samples or gifts, the value is the fair market value of the item. If it's a $200 prototype, you declare $200, not $1.
For returns or repairs, declare the actual value of the item and note "Goods returning to seller for repair" or "Returned for credit." Customs may treat returned goods differently for duty.

The temptation to under-declare is real (lower duty for the buyer), and it's a common gray-market practice. It is also customs fraud in every country, and large enterprise customers will not accept under-declared shipments — their compliance teams flag them.

Sample commercial invoice

COMMERCIAL INVOICE                          Date: April 23, 2026
                                         Invoice #: 2026-0423-INTL

Seller (Exporter):                     Buyer (Importer):
Jane Smith Design LLC                  Acme UK Ltd.
123 Market St                          45 High Street
San Francisco, CA 94103                London, EC1A 1AA
United States                          United Kingdom
EIN: 12-3456789                        VAT: GB123456789
Phone: +1-415-555-0100                 Phone: +44-20-7946-0000

Ship to: same as Buyer
Reason for export: Sale of goods
Incoterms: DDP London (seller pays duties)
Country of origin: United States

Description                                  HS Code     Qty    Unit Value   Total
----------------------------------------------------------------------------------
Printed marketing brochures, 48 pages,
A4, full color, paperback                    4901.99     500    USD 4.00     USD 2,000.00

Display stand, aluminum, collapsible,
72cm tall                                    7616.99       2    USD 250.00   USD 500.00

                                                                Subtotal:    USD 2,500.00
                                                                Shipping:    USD 350.00
                                                                Insurance:   USD 50.00
                                                                ─────────────────────
                                                                TOTAL:       USD 2,900.00

Total weight: 18 kg
Number of packages: 3

I declare the above information to be true and correct
to the best of my knowledge.

Signature: [signature]              Date: April 23, 2026
Name:      Jane Smith
Title:     Owner

This is the minimum. Real shipments often add a packing list (which boxes contain which items), certificate of origin (formal statement for trade-agreement preferences), and any country-specific certifications.

Commercial invoice vs tax invoice vs proforma vs sales invoice

This is where confusion lives. Four documents that sound similar:

| Document | Purpose | Required? | Used by | |---|---|---|---| | Sales invoice (regular) | Request payment for delivered goods/services | Always for paid transactions | Seller, buyer | | Commercial invoice | Customs declaration for cross-border shipment | When goods cross an international border | Customs, seller, buyer | | Tax invoice | Country-specific invoice with tax fields (VAT, GST) | When local tax law requires it | Tax authority, buyer's accounting | | Proforma invoice | Preliminary invoice for quotes or pre-shipment estimates | Optional, often used before commercial invoice | Buyer (for budgeting), customs (sometimes) |

In an international shipment, you often need two or three of these for the same transaction:

A proforma invoice before the shipment, so the buyer can budget and arrange any required import licenses or letters of credit
A commercial invoice with the shipment for customs clearance
A regular sales invoice for the buyer's payment processing (sometimes the commercial invoice doubles as this; sometimes it's separate)

The commercial invoice has the strictest format requirements because customs is unforgiving. The sales invoice has the most flexibility because it's between you and the buyer.

Incoterms in two minutes

Incoterms (International Commercial Terms) define who pays for shipping, insurance, customs duties, and import taxes. The full list has 11 entries, but four cover 90% of practical use:

EXW (Ex Works) — buyer picks up at seller's facility. Seller does almost nothing.
FOB (Free On Board) — seller delivers to the port; buyer takes over from there.
CIF (Cost, Insurance, Freight) — seller pays shipping + insurance to destination port; buyer handles import.
DDP (Delivered Duty Paid) — seller handles everything, including import duty. Most buyer-friendly; most expensive for seller.
DAP (Delivered At Place) — seller delivers to the buyer's address but the buyer pays import duty.

State the Incoterms explicitly on the commercial invoice ("DDP London" or "FOB San Francisco"). Without it, customs and the buyer guess, and guesses get expensive.

Country-specific gotchas

A few that catch shippers off guard:

EU — VAT applies on import unless the buyer self-accounts via reverse charge. Commercial invoice should clearly state the VAT-exempt reason if applicable.
UK — post-Brexit, shipments from EU to UK now require commercial invoices (they didn't before). EORI numbers required for commercial shipments.
Canada — for shipments under CAD 3,300, a CCI (Canada Customs Invoice) can substitute for a commercial invoice. Above that, full commercial invoice required.
China — multiple copies often required, with original signatures. Digital invoices accepted by most carriers but not all customs offices.
Brazil — extremely strict; commercial invoices often need notarization. Many shippers use a customs broker rather than handle directly.
Mexico — pedimento (Mexican import declaration) is required in addition to the commercial invoice; usually handled by the importer's broker.

For specifics, ask your shipping carrier (DHL, FedEx, UPS, etc.) — they have country-by-country guides and will flag missing fields before pickup.

FAQ

What is the difference between a commercial invoice and a regular invoice?

A regular invoice requests payment from the buyer; a commercial invoice serves a customs function for international shipments. A single transaction can have both — the regular invoice for payment, the commercial invoice for customs. For domestic transactions, only the regular invoice exists.

Do I need a commercial invoice for digital goods?

No. Commercial invoices exist because customs needs to classify physical goods crossing a border. Software, design files, written deliverables, and any other digital products don't cross customs and don't need one. Your normal invoice is sufficient.

Can a proforma invoice substitute for a commercial invoice?

Sometimes. Customs in some countries will accept a proforma invoice for clearance, especially for samples or non-commercial shipments. For paid commercial transactions, customs typically requires a commercial invoice. When in doubt, send a commercial invoice — it satisfies more cases than a proforma.

What's an HS code and where do I find it?

HS code (Harmonized System code) is a 6-to-10-digit international classification code for traded goods. The first 6 digits are standardized worldwide; countries add 2–4 more for their own subcategories. Find them on your country's customs website (e.g., USITC Harmonized Tariff Schedule for the US, or the Trade Tariff service for the UK).

Who is responsible for the commercial invoice — me or my shipping carrier?

You. The carrier (DHL, FedEx, UPS, etc.) provides templates and may help you complete them, but the seller is legally responsible for the accuracy. Carriers explicitly disclaim liability for false declarations.

What happens if I under-declare the value on a commercial invoice?

It's customs fraud. Penalties range from forfeiture of the shipment to fines (often 2–4x the under-declared amount) to criminal charges for repeated or large violations. Don't do it, and refuse if a buyer asks you to.

Do I sign a commercial invoice?

Yes — most customs authorities require a signature certifying the declared information is accurate. Ink signatures are technically required in some countries; digital signatures clear in practice almost everywhere. The signature is on a line near the bottom, with name, title, and date.

What's the difference between a commercial invoice and a packing list?

A commercial invoice declares value, parties, and reason for export — customs uses it for duty and clearance. A packing list details what's physically in each box (item, quantity, weight, dimensions) — customs uses it for inspection and the carrier uses it for handling. Both often accompany the same shipment.