eBay detailed 2026 shipping rate updates, led by a 7.7% average increase for USPS Ground Advantage and a 5.2% hike for FedEx Ground services effective in January. While UPS has held base rates steady for now, both commercial carriers are implementing a structural shift in how they assess “Additional Handling” and “Oversize” fees, moving from linear dimension thresholds to a strict cubic volume maximum. This operational change risks triggering significant new surcharges for merchants shipping bulky inventory that previously fell under the linear caps.
