With the Golden Quarter fast approaching, Paweł Zakielarz, CEO of Shopreturns, explores the potential impact of the EU’s new €3 customs duty on peak trading.
UK retailers are entering the most important trading period of the year with a very different cost base for selling into Europe. British exports remain strong, but new EU customs costs and further operational requirements arriving this autumn mean that the Golden Quarter will test more than retailers’ ability to generate international demand. It will test whether that demand can still be served profitably.
The latest figures from the UK Department for Business and Trade underline the scale of the opportunity. UK exports reached £946.6 billion in the 12 months to May 2026, including £385.3 billion to EU countries. Almost 295,300 British businesses now export internationally.
Those numbers show that European customers remain important to UK businesses. But for ecommerce retailers, revenue is only one part of the picture. As Black Friday and Christmas approach, the more important calculation is increasingly what happens to margin after customs, fulfilment, delivery and returns are taken into account.
Peak volumes will magnify small costs
Since 1 July 2026, each tariff line declared on a low-value parcel entering the EU has been subject to an additional €3 customs duty. This means the impact is determined not simply by the number or value of parcels, but also by what is inside them. A parcel containing products across three different tariff lines can generate €9 in customs duty before VAT, carrier administration fees and other fulfilment costs are considered. At relatively low volumes, an additional few euros may appear manageable. The economics look very different when hundreds or thousands of orders are moving into Europe every month.
Peak season magnifies this effect. The same period in which retailers are discounting heavily, investing in customer acquisition and competing on delivery is also the period when relatively small inefficiencies can multiply across significantly higher order volumes. This is why focusing solely on how to absorb the €3 charge misses the bigger issue. Tariff classification, carrier fees, customs administration, inventory location and the cost of returns all influence the real profitability of a cross-border order.
The competitive gap is widening
Government statistics show exports continue to grow, increasing 3.1% year-on-year, while the EU remains one of the UK’s largest export markets. However, UK retailers now face a structural disadvantage compared with businesses already operating inside the EU. European retailers fulfil domestic orders without additional customs procedures, while many UK businesses continue shipping individual parcels across the border. On a single parcel, the difference may appear relatively small. Across thousands of orders every month, it becomes a structural competitive disadvantage. European retailers don’t have to build these additional customs costs into every shipment, while UK businesses increasingly do.
Many businesses viewed the July customs changes as a one-off regulatory deadline. In reality, they represent only the first stage of a wider customs reform. From 1 October 2026, the European Commission begins monitoring attempts to divert shipments away from the Import One-Stop Shop (IOSS). From 1 November, Product Identifiers (PIDs) become mandatory on customs declarations, with an additional parcel handling fee also expected around the same period. These changes arrive just weeks before Black Friday and the Christmas trading season.
Retailers shouldn’t think the July deadline is behind them. October and November bring further operational requirements just as retailers enter the golden quarter and prepare for Black Friday and Christmas. Businesses delaying decisions today risk implementing major operational changes during their busiest trading period.
Five questions retailers should answer before peak
There are five areas I would examine before entering the Golden Quarter:
1. Are HS commodity codes accurate across the product catalogue? Incorrect classifications can create unnecessary costs and customs problems at scale.
2. Are European customers receiving orders on a Delivered Duty Paid basis, or can additional charges still appear at delivery?
3. Are bundles and gift sets creating unnecessary tariff lines and therefore additional customs costs?
4. Has the business reached a volume at which positioning some inventory inside the EU should be modelled against continued parcel-by-parcel shipping from the UK?
5. What happens when the product comes back?
That last question is particularly important for retailers with high return rates.
Returns are becoming a financial issue
The impact is particularly significant for fashion and ecommerce retailers, where returns form a routine part of the customer journey. Every additional border crossing extends refund times, delays products returning to stock and increases administrative costs.
Five years ago, returns were viewed primarily as a customer service function. Today they’re a financial issue. Every additional day before a returned item is available for resale affects working capital, profitability and customer satisfaction. Retailers that simplify returns will also strengthen their margins.
The latest government figures show that almost 300,000 British businesses already export internationally, although only 12.1% of registered UK businesses currently sell overseas. As more companies expand internationally, operational efficiency is becoming one of the defining competitive advantages in cross-border ecommerce.
British companies have shown they can compete internationally. The next challenge isn’t selling more products – it’s making international trade simpler, faster and more profitable. Businesses that redesign their cross-border operations ahead of the Golden Quarter will be better positioned to protect both their margins and customer experience.
Stay informed
Our editor carefully curates two newsletters a week filled with up-to-date news, analysis and research. Click here to subscribe to the FREE newsletter sent straight to your inbox. Why not follow us on LinkedIn to receive the latest updates on our research and analysis?
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GUEST POST The Golden Quarter will test whether cross-border growth is still profitable
Pawel Zakielarz
With the Golden Quarter fast approaching, Paweł Zakielarz, CEO of Shopreturns, explores the potential impact of the EU’s new €3 customs duty on peak trading.
UK retailers are entering the most important trading period of the year with a very different cost base for selling into Europe. British exports remain strong, but new EU customs costs and further operational requirements arriving this autumn mean that the Golden Quarter will test more than retailers’ ability to generate international demand. It will test whether that demand can still be served profitably.
The latest figures from the UK Department for Business and Trade underline the scale of the opportunity. UK exports reached £946.6 billion in the 12 months to May 2026, including £385.3 billion to EU countries. Almost 295,300 British businesses now export internationally.
Those numbers show that European customers remain important to UK businesses. But for ecommerce retailers, revenue is only one part of the picture. As Black Friday and Christmas approach, the more important calculation is increasingly what happens to margin after customs, fulfilment, delivery and returns are taken into account.
Peak volumes will magnify small costs
Since 1 July 2026, each tariff line declared on a low-value parcel entering the EU has been subject to an additional €3 customs duty. This means the impact is determined not simply by the number or value of parcels, but also by what is inside them. A parcel containing products across three different tariff lines can generate €9 in customs duty before VAT, carrier administration fees and other fulfilment costs are considered. At relatively low volumes, an additional few euros may appear manageable. The economics look very different when hundreds or thousands of orders are moving into Europe every month.
Peak season magnifies this effect. The same period in which retailers are discounting heavily, investing in customer acquisition and competing on delivery is also the period when relatively small inefficiencies can multiply across significantly higher order volumes. This is why focusing solely on how to absorb the €3 charge misses the bigger issue. Tariff classification, carrier fees, customs administration, inventory location and the cost of returns all influence the real profitability of a cross-border order.
The competitive gap is widening
Government statistics show exports continue to grow, increasing 3.1% year-on-year, while the EU remains one of the UK’s largest export markets. However, UK retailers now face a structural disadvantage compared with businesses already operating inside the EU. European retailers fulfil domestic orders without additional customs procedures, while many UK businesses continue shipping individual parcels across the border. On a single parcel, the difference may appear relatively small. Across thousands of orders every month, it becomes a structural competitive disadvantage. European retailers don’t have to build these additional customs costs into every shipment, while UK businesses increasingly do.
Many businesses viewed the July customs changes as a one-off regulatory deadline. In reality, they represent only the first stage of a wider customs reform. From 1 October 2026, the European Commission begins monitoring attempts to divert shipments away from the Import One-Stop Shop (IOSS). From 1 November, Product Identifiers (PIDs) become mandatory on customs declarations, with an additional parcel handling fee also expected around the same period. These changes arrive just weeks before Black Friday and the Christmas trading season.
Retailers shouldn’t think the July deadline is behind them. October and November bring further operational requirements just as retailers enter the golden quarter and prepare for Black Friday and Christmas. Businesses delaying decisions today risk implementing major operational changes during their busiest trading period.
Five questions retailers should answer before peak
There are five areas I would examine before entering the Golden Quarter:
1. Are HS commodity codes accurate across the product catalogue? Incorrect classifications can create unnecessary costs and customs problems at scale.
2. Are European customers receiving orders on a Delivered Duty Paid basis, or can additional charges still appear at delivery?
3. Are bundles and gift sets creating unnecessary tariff lines and therefore additional customs costs?
4. Has the business reached a volume at which positioning some inventory inside the EU should be modelled against continued parcel-by-parcel shipping from the UK?
5. What happens when the product comes back?
That last question is particularly important for retailers with high return rates.
Returns are becoming a financial issue
The impact is particularly significant for fashion and ecommerce retailers, where returns form a routine part of the customer journey. Every additional border crossing extends refund times, delays products returning to stock and increases administrative costs.
Five years ago, returns were viewed primarily as a customer service function. Today they’re a financial issue. Every additional day before a returned item is available for resale affects working capital, profitability and customer satisfaction. Retailers that simplify returns will also strengthen their margins.
The latest government figures show that almost 300,000 British businesses already export internationally, although only 12.1% of registered UK businesses currently sell overseas. As more companies expand internationally, operational efficiency is becoming one of the defining competitive advantages in cross-border ecommerce.
British companies have shown they can compete internationally. The next challenge isn’t selling more products – it’s making international trade simpler, faster and more profitable. Businesses that redesign their cross-border operations ahead of the Golden Quarter will be better positioned to protect both their margins and customer experience.
Stay informed
Our editor carefully curates two newsletters a week filled with up-to-date news, analysis and research. Click here to subscribe to the FREE newsletter sent straight to your inbox. Why not follow us on LinkedIn to receive the latest updates on our research and analysis?
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