Cross-Border E-Commerce Shipping: A Seller's Basics Guide (2026)

Cross-border e-commerce shipping has three moving parts: customs paperwork (commercial invoice + HS code), duty and tax (collected either by the seller at checkout via DDP, or by the buyer on delivery via DDU), and the carrier itself (DHL, FedEx, UPS, or postal service). Get those three right and international orders flow as smoothly as domestic ones. Get any of them wrong and packages stall at customs.

This guide gives you the practical essentials without the jargon.

What paperwork do I need?

Every international shipment needs a commercial invoice containing: sender and recipient details, item description (detailed, not just "goods"), quantity, unit value, total value in the destination currency, HS tariff code (a 6–10 digit international classification), country of origin, and Incoterms (who pays duties). Most couriers auto-generate these through their platforms once you enter the product details.

What's an HS code and how do I find mine?

The Harmonized System is an international product classification. Every physical good has a 6-digit HS code; countries add digits for national classification (10 digits in the EU, for example). The UK Trade Tariff (gov.uk/trade-tariff), EU TARIC database, and US HTSUS all let you look up your product. Getting this right matters — the wrong code can mean extra duty, held packages, and customer complaints.

What are the low-value import thresholds?

• UK: orders up to £135 require marketplace-collected VAT (or seller if not via marketplace). Above £135, VAT + duty collected at border.
• EU: €22 low-value relief was abolished in 2021. Now all imports require VAT, and IOSS (Import One-Stop Shop) registration lets sellers pre-collect VAT on orders up to €150.
• US: Section 321 de minimis allows most consumer imports under US$800 to enter duty-free (though this threshold is under political pressure and may drop).
• Australia: GST collected on all imports since July 2018; sellers above AUD 75k turnover must register.
• Canada: duty-free threshold CAD 20; GST/HST collected above that.

DDU vs DDP — who pays duties?

DDU (Delivered Duty Unpaid): buyer pays duties on receipt. Simpler for seller, worse customer experience — buyers are often surprised by the bill.

DDP (Delivered Duty Paid): seller collects duties at checkout and prepays. Better customer experience, no surprises. Requires accurate HS code and tax rate calculation — tools like Zonos, Avalara, and carrier DDP services automate this.

GeraMarket defaults to DDP for UK/EU/US destinations and DDU for less predictable markets.

Which carrier should I use?

• DHL Express: reliable, 2–4 day global, high cost. Good for high-value and time-sensitive.
• FedEx International Priority: equivalent to DHL Express on many routes.
• UPS Worldwide Saver: slightly cheaper than DHL/FedEx, good availability in the Americas.
• TNT (now FedEx): strong European network.
• Royal Mail International Tracked/Signed: cost-effective for UK sellers sending light parcels.
• USPS International: cheap for US sellers for light parcels.
• Haypost International (Armenia), Nigerian Post, Postal Kenya: cheapest option for light parcels; longer transit (7–30 days).
• Aramex: strong in Middle East/Gulf routes.

What are the common pitfalls?

• Under-declaring value (illegal in most jurisdictions)
• Vague descriptions ("gift", "merchandise") — customs will hold
• Wrong HS code — extra duty or refusal
• Not offering DDP to the UK — customer gets surprise duty bill
• Shipping prohibited items (lithium batteries, liquids, food without health certification)
• Ignoring destination-country packaging regulations (e.g. UK plastic packaging tax above 10 tonnes)

How does GeraMarket simplify cross-border?

One-click cross-border listings: you provide product details once; we calculate duty, collect VAT where required, generate the commercial invoice, book the carrier, and provide tracking to the buyer. You ship one product, we handle 180+ destinations.