Shipping costs are one of the largest line items for any eCommerce business, often accounting for 15-20% of total revenue. Yet many brands unknowingly leave money on the table through avoidable shipping mistakes that erode their margins order after order.
Here are five of the most common — and costly — shipping errors we see, along with practical strategies to fix them.
1. Using Oversized Packaging
Dimensional weight pricing means carriers charge based on package size, not just actual weight. If you are shipping a small product in a box twice its size, you are paying for air. This is one of the most common mistakes we see with growing brands.
The fix is straightforward: audit your packaging sizes and invest in a range of box dimensions that closely fit your product catalog. Right-sizing your packaging can reduce shipping costs by 10-25% while also creating a better unboxing experience for customers and reducing waste.
2. Not Negotiating Carrier Rates
Many businesses accept published carrier rates without negotiation. But carriers — from Canada Post to UPS, FedEx, and regional options — expect to negotiate, especially as your volume grows. If you are shipping more than 100 packages per month, you have leverage.
Compare rates across multiple carriers regularly, and do not be afraid to use competing quotes as negotiation leverage. Even a 5% reduction in carrier rates can translate to thousands of dollars in annual savings.
3. Ignoring Shipping Zones
Shipping costs increase with distance. If your warehouse is on one coast but most of your customers are on the other, you are paying premium zone rates on every order. Understanding your customer distribution and strategically locating inventory can dramatically reduce average shipping costs.
Consider splitting inventory across multiple fulfillment locations or partnering with a 3PL that has distribution points closer to your customer base.
4. Manual Processes and Human Error
Manual label creation, hand-written addresses, and spreadsheet-based inventory tracking are recipes for costly errors. Wrong addresses lead to returned packages. Incorrect weights lead to carrier surcharges. Missing items lead to reshipping costs and unhappy customers.
Automating your shipping workflow through a quality WMS or shipping platform pays for itself quickly. Look for tools that validate addresses, auto-select the optimal carrier for each shipment, and integrate directly with your order management system.
5. Neglecting Returns Management
Returns are an inevitable part of eCommerce, but a poorly managed returns process can turn a minor cost into a major one. Brands that treat returns as an afterthought end up paying for unnecessary shipping, losing inventory to damage, and frustrating customers who become unlikely to reorder.
Implement a streamlined returns process with prepaid labels, clear policies, and efficient restocking procedures. The goal is to turn returns from a cost center into a customer retention opportunity.
The Bottom Line
Shipping does not have to be a black hole for your margins. By addressing these five common mistakes, most brands can reduce their shipping costs by 15-30% while actually improving delivery speed and customer satisfaction.
At PremoShip, we help eCommerce brands optimize every aspect of their fulfillment and shipping operations. Request a free shipping audit and discover where your savings opportunities are.