HS Code on a Commercial Invoice: How to Find and Show It

Quick answer: Put the HS code on a commercial invoice next to each line item, using at least the six-digit international code (for example 6109.10 for cotton knitted T-shirts) and, if known, the importing country's longer national code. Find it in official tariff lookup tools, label it clearly, and keep it consistent with your packing list and export filings.

Every physical product that crosses a border gets classified under the Harmonized System, usually shortened to HS. The HS code decides the duty rate, whether licenses or restrictions apply, and how the shipment is counted in trade statistics. Putting the correct HS code on a commercial invoice helps the importer's broker clear the goods quickly and reduces the chance of customs questions, delays or reassessed duty.

This guide explains how HS codes are structured, the difference between international and national codes, how to look up the right number, how to show it on the invoice with a filled sample, and what the upcoming HS 2028 edition means for exporters.

What an HS code is

The Harmonized System is maintained by the World Customs Organization (WCO) and is used by the vast majority of the world's customs administrations. It organizes goods into sections and chapters by type and degree of processing, broadly moving from raw materials and animal products toward manufactured goods. The current edition is HS 2022.

A six-digit HS code has three layers:

Digits	Level	Example: 6109.10	Example: 0901.11
First 2	Chapter	61: Apparel, knitted or crocheted	09: Coffee, tea, maté and spices
First 4	Heading	6109: T-shirts, singlets and other vests, knitted	0901: Coffee
First 6	Subheading	6109.10: Of cotton	0901.11: Not roasted, not decaffeinated

Those six digits are the same in every HS country. Beyond that, each country adds its own digits for tariff and statistical purposes.

International HS codes vs national tariff codes

Code	Length	Used for
HS (international)	6 digits	Common base recognized by all HS countries
US HTSUS	10 digits (8-digit tariff line plus 2 statistical)	Imports into the United States
US Schedule B	10 digits	US export reporting
EU Combined Nomenclature (CN)	8 digits	Exports from and imports into the EU; TARIC extends imports to 10 digits
UK commodity code	8 digits for exports, 10 for imports	UK Global Tariff

Because the first six digits match, a seller can always show the six-digit code with confidence once the product is classified. The extra national digits differ between countries and sometimes between import and export, which is why an exporter's code and the importer's code for the same product may not be identical after the sixth digit.

How to find the right HS code

1. Describe the product precisely. Note what it is, what it is made of (and in what proportions), how it is made (knitted or woven, for example), what it is used for and whether it is complete or a part.
2. Search an official tariff tool. For US imports use the USITC Harmonized Tariff Schedule search; for US exports the Census Bureau's Schedule B search; for the UK the government's online trade tariff; for the EU the TARIC database.
3. Read the chapter and section notes. They often include or exclude products in ways the heading text alone does not show.
4. Apply the General Rules of Interpretation. These rules decide classification for sets, unfinished goods and products made of several materials. Classification starts at the heading level and works down.
5. Check past rulings. US Customs and Border Protection publishes rulings in its CROSS database; the EU publishes Binding Tariff Information decisions.
6. Confirm with your buyer or broker for the importing country's full code, especially for high-duty goods.
7. Record the result in a product master list so every invoice uses the same code.

Avoid relying on a supplier's catalog code, a competitor's invoice or an AI chatbot answer without checking the official tariff. Search engines frequently surface codes from the wrong country or an older edition.

How to show HS codes on a commercial invoice

The clearest layout adds an "HS code" column to the line-item table, next to the description and country of origin. If your template has no spare column, put the code at the end of the description in parentheses. Label national codes with the country so nobody mistakes an export code for an import code.

Formatting varies: some tariffs print codes with dots (6109.10), others without (610910), and national codes often add further dots or spaces. Either style is understood, but use one consistently across your documents. Do not pad a six-digit code with zeros to make it look like a ten-digit national code, because "6109100000" may not exist in the importing country's tariff.

Filled sample: line items with HS codes

A US apparel company ships an order to a retailer in Canada. Classifications below are shown for illustration; confirm your own products with official tools.

Description	HS code	Origin	Qty	Unit price	Amount
Men's T-shirts, 100% cotton, knitted	6109.10	USA	300	$6.20	$1,860.00
Socks, 80% cotton 20% polyamide, knitted	6115.95	USA	500	$1.40	$700.00
Coffee beans, green (not roasted, not decaffeinated), 1 kg bags	0901.11	Colombia	40	$9.75	$390.00

Arithmetic: 300 × $6.20 = $1,860.00; 500 × $1.40 = $700.00; 40 × $9.75 = $390.00. Goods subtotal: $1,860.00 + $700.00 + $390.00 = $2,950.00. Add freight of $185.00 and the invoice total is $3,135.00.

Three details to notice. Each product has its own line because each has a different code; combining them as "clothing and coffee, $2,950" would force customs to ask questions. The coffee shows Colombia as its origin even though the seller is American, because origin follows where the goods were produced, not where they were shipped from. And the delivery term, such as "DAP Toronto, Incoterms 2020", appears elsewhere on the invoice; see our guide to Incoterms on an invoice for the format.

Why the HS code matters beyond the duty rate

Duty is the obvious reason customs cares about classification, but the code drives several other decisions:

• Trade agreement eligibility. Rules of origin under free trade agreements are usually written by HS heading or subheading. The wrong code can mean applying the wrong rule and losing a preferential rate.
• Licenses and restrictions. Controls on food, plants, chemicals, dual-use technology and other sensitive goods are often triggered by the code.
• Import VAT or GST and excise. Some goods attract special rates or excise duties that customs applies based on classification.
• Trade remedies. Anti-dumping and countervailing duties target specific products, identified partly by code.
• Statistics. Governments compile trade data from declared codes, which is why export filings ask for them even when no duty applies.

Worked example: how a code changes the duty bill

To see why a few digits matter, take a hypothetical shipment with a customs value of $1,860 and two candidate classifications. The rates below are invented for illustration; real rates depend on the importing country, the product and any trade agreement.

• Classification A at a 16.5% duty rate: $1,860 × 16.5% = $306.90.
• Classification B at a 12% duty rate: $1,860 × 12% = $223.20.
• Difference: $306.90 − $223.20 = $83.70 on this one shipment.

Over 20 similar shipments a year, that gap is 20 × $83.70 = $1,674. If the lower code turns out to be wrong, customs can ask for the difference plus interest and possibly penalties; if the higher code is wrong, the importer has been overpaying. Either way, the cost of checking the classification once is small next to the cost of getting it wrong repeatedly.

Couriers and low-value shipments

Express carriers often ask for an HS code on every commercial invoice, even for low-value parcels that fall under a de minimis threshold. Carrier booking systems may also ask you to pick a code from a list. Use the same code you put on the invoice, and do not accept a carrier's suggested code without checking it against your own classification.

HS 2028: what changes and when

The WCO reviews the Harmonized System roughly every five years. The next edition, HS 2028, is scheduled to enter into force on January 1, 2028. The WCO describes it as a package of 299 sets of amendments that create, delete or restructure headings and subheadings.

What this means in practice:

• Codes on invoices dated in 2026 and 2027 should still use the current edition as applied by each country.
• During 2027, check whether any of your products are affected, using the WCO correlation tables and, once published, the national tariffs that implement HS 2028.
• Update your product master list before your first shipments of 2028, and tell regular buyers if a code changes so their systems update too.

National tariffs can also change between editions, so review your codes at least once a year even outside an HS revision.

Checklist: HS codes on your commercial invoice

• One line per product with a distinct classification.
• Six-digit HS code on every goods line.
• National code added and labeled where known (for example "US HTS" or "EU CN").
• Plain-language description detailed enough to support the code: material, construction, use.
• Country of origin for each line.
• Quantity, unit of measure and unit price that add up to the line amount.
• Codes identical across invoice, packing list and export filing.
• Product master list reviewed annually and ahead of HS 2028.

Common mistakes

• Vague descriptions. "Parts", "samples" or "gifts" cannot be classified. Describe what the item actually is.
• Using another country's full code as if it were universal. Only the first six digits are shared.
• Classifying by use alone. Material and construction often matter more than what the buyer will do with it.
• One code for a mixed shipment. Split lines by classification.
• Copying codes from old invoices without checking for tariff updates or a new HS edition.
• Undervaluing or misclassifying to reduce duty. Customs authorities treat this seriously and may impose penalties.

Creating the invoice

Our commercial invoice template guide lists all the export fields, and the article on packing slips vs invoices explains how the packing list should mirror your lines. If the goods are being sent to an agent who will sell them later rather than to a buyer, see the consignment invoice guide for the valuation wording. To build the PDF, open the free invoice generator, add the HS code and origin to each line description, and pick a clean layout such as the classic invoice template. The generator does not classify products or submit customs filings; your broker or forwarder does that. More export topics live in our guide to invoicing international clients.