What Is an HS Code and Why It Matters for International Deliveries

News & Insights International Insights Jan 1, 2026 8:30:00 AM

Stuart McQueen

As global eCommerce and cross‑border shipping continue to grow, accurate customs data is no longer optional. One of the most important pieces of information required for international deliveries is the HS Code.

From avoiding customs delays to ensuring the correct duty and VAT are applied, HS Codes play a critical role in keeping parcels moving smoothly across borders.

What Are HS Codes?

Harmonised System (HS) Codes, sometimes referred to as Commodity Codes or Trade Tariff Codes, are numerical codes used worldwide to classify goods being shipped internationally.

Developed by the World Customs Organization (WCO), HS Codes provide a standardised way for customs authorities to understand:

What the item is
What it’s made from
How it’s produced
How it’s intended to be used

Customs officers in every country rely on HS Codes to clear goods, apply duties and taxes, and enforce trade regulations.

How HS Codes Work

HS Codes are numeric only
The minimum length is 6 digits
Most countries use 8–10 digits

Country‑specific requirements include:

Germany: 8 digits
Republic of Ireland: 10 digits

Only use 6, 8 or 10 digits

Do not include:

Full stops
Commas
Spaces
Question marks
Dashes

Nothing other than digits should be entered.

Why Are HS Codes So Important?

The HS Code determines:

The correct customs duty
Any VAT or local tax
Whether goods are subject to restrictions or inspections

Currently:

HS Codes are mandatory for tracked items
They are highly recommended for untracked items

However, the industry is moving rapidly towards mandatory HS Codes for all international shipments, including untracked services.

Customs authorities in regions such as the USA, EU, South America and the Middle East are already enforcing much stricter controls. As a result, inaccurate or missing HS Codes increasingly lead to delays or rejections.

For this reason, Whistl Parcels customers must ensure accurate HS Codes are included in the data they send us.

This Is Now Mandatory: Recipient Contact Details

Customs authorities and final‑mile carriers often need to contact the recipient to resolve queries quickly.

While currently classed as “highly recommended”, we expect the following to become mandatory very soon:

Recipient email address
Recipient telephone or mobile number

To help ensure your parcels reach customers without delay, we strongly encourage you to include these details wherever possible when submitting shipment data to Whistl Parcels.

Writing Accurate Product Descriptions for HS Codes

A clear and detailed product description helps customs authorities classify items correctly and avoid unnecessary holds.

Your description should include:

The type of product
The materials used
The production method
The intended use

Why Should Your Client Provide an HS Code?

Providing an accurate HS Code allows customs systems to electronically identify the contents of a shipment, enabling:

Faster customs clearance
Correct application of duty and VAT
Reduced risk of inspection or delay

If an HS Code is missing or incorrect, customs authorities may:

Stop and examine the parcel
Delay the shipment
Reject the item entirely
Return goods to sender
Destroy the goods
Apply incorrect charges

This can result in unexpected costs and a poor customer experience.

Responsibility sits with the sender, not the parcel carrier. Businesses should regularly review their customs classification policies, especially as HS Codes are updated over time.