There's a tempting logic to selling abroad: more countries, more customers, more revenue. And it can absolutely work. But international ecommerce hides real complexity in VAT, customs and currency — the kind that turns a promising expansion into a tangle of tax registrations and angry customers stung by surprise duties. Go in prepared and the upside is huge; go in blind and it's painful.
Get your head around VAT and tax
Tax is the part that catches UK sellers out most. Since leaving the EU, selling into Europe means navigating import VAT and, for lower-value goods, schemes like IOSS that let you collect VAT at checkout rather than leaving customers to pay on delivery. Other countries — the US, Australia, the Gulf — each have their own thresholds and rules.
This is one area where guessing is genuinely dangerous. Speak to an accountant who knows cross-border ecommerce before you switch on a new market, and make sure your store can apply the right tax rules per destination. Your ecommerce developer can configure tax handling, but the rules themselves are an accounting decision.
Handle shipping and customs properly
Cross-border shipping is more than a bigger postage label. You'll need to decide who pays duties: ship DDP (delivered duty paid, where you collect duties at checkout) for a smooth experience, or DDU (the customer pays on delivery) to keep your prices lower at the cost of nasty surprises that cause refused parcels.
- Provide accurate customs documentation and product codes to avoid delays.
- Be honest about delivery times — international shipping is slower and shoppers forgive clarity, not vagueness.
- Plan your returns process; cross-border returns are costly and need a clear policy.
Show prices in local currencies
Shoppers convert better when they see prices in their own currency, because it removes mental maths and uncertainty. Most platforms support multi-currency display, and many can take payment in local currencies too. Decide how you'll handle exchange-rate fluctuations and rounding so your margins stay protected, and make sure the chosen currency carries through to the checkout — a price that changes at the final step kills trust, as we cover in our cart abandonment guide.
Localise more than the language
True localisation goes beyond translation. Shoppers in different markets expect familiar payment methods, sensible delivery options and pricing that feels right for their region. Even small touches — local date formats, recognised trust signals, region-appropriate imagery — lift confidence. If you're investing in overseas growth, pairing a localised store with targeted digital marketing in each market pays off far better than a one-size-fits-all approach.
Start with one market, not ten
The wisest way to expand is gradually. Pick one promising market, get the VAT, shipping, currency and returns right, learn from real orders, then repeat. Trying to launch everywhere at once multiplies the admin and the risk before you've proven demand.
If you're planning to sell across borders and want your store set up to handle tax, currency and shipping cleanly, browse vetted UK specialists in our ecommerce developers directory and ask about their experience with international stores.