Tata Consultancy Services (TCS) has rolled out its annual salary hikes effective from April 1. The average salary hike is in the range of 4.5-7%, while top performers have been given double-digit hikes, Chief HR Officer Milind Lakkad said. "The reduced attrition at 12.5% [and] increased customer visits...have resulted in great vibrancy in our delivery centres," he added.