DHL Express fuel surcharges are added on top of that base rate and can meaningfully affect the total cost of every shipment, especially at scale. For Shopify merchants who ship regularly across borders, understanding how these surcharges are calculated and what drives them is essential for accurate pricing, sustainable margins, and fewer surprises on your invoice. This guide explains what DHL Express fuel surcharges are, how they are calculated, what they apply to, and how to factor them into your Shopify shipping setup. DHL Express fuel surcharges are percentage-based fees added to transportation charges to cover fluctuating jet fuel costs. Because fuel is one of the highest operating costs in air express shipping, and because fuel prices can shift significantly due to geopolitical events, market conditions, and supply changes, DHL uses a surcharge mechanism to keep its base rates stable while adjusting the fuel component separately.