ABSTRACT: Automatically determining time threshold guarantees for metrics like completion time or first response time for tasks or items. A system relies on the historical tasks data with completion or first response times. The system plots a graphical representation between completion time and a percentage of tasks completed and uses sophisticated analysis of slopes at different points of the graphical representation to determine time threshold guarantees below a specified maximum completion or first response time threshold, and above a specified minimum percentage of completion. The system also compensates for a variety of factors which may be changed from the time historical data was obtained to the present time for which time threshold guarantees are being determined. In absence of historical customer data, the system makes the recommendations based on available datasets of peer customers.