What is an eBay transaction defect rate and how do I improve it?
The transaction defect rate is eBay's way of measuring how often an order ended badly enough to count as a real service problem. It is designed to reflect repeated operational issues, not isolated bad luck.
Defects can come from seller-cancelled orders, unresolved buyer cases, or other transaction outcomes that eBay considers avoidable from the seller side. Sellers sometimes focus only on one recent order, but the real issue is usually a repeatable weakness in inventory control, handling speed, or post-sale support.
To improve the defect rate, identify the recurring reason behind the defective orders, then fix the process that caused them. That can mean tightening inventory updates, reducing out-of-stock cancellations, shipping within the promised window, or handling returns before the case escalates.
Do not guess at the cause. eBay shows the transaction examples behind the metric, and you should study those examples before changing listing settings or sales volume.
Official eBay pages to review: