A system and method is provided for improved reporting of supplier performance. A system receives and processes data to enable reporting of on-time performance relative to a plurality of order start points and a plurality of order end points. Buyers and suppliers report on-time performance for system processing using the delivery start points and end points collected in the normal course of their business operations. System users may obtain supplier on-time performance reports indicating the on-time performance of suppliers relative to the plurality of start point/end point pairs reflected in the collected data. A system and method is also provided for improved reporting of reject performance. A system stores collected information predictive of whether an order reject was supplier caused or buyer caused. The predicted cause of order rejects is reflected in supplier reject performance as reported to system users.