The estimated average salary for a Senior Customer Service Associate at Firstsource Solutions is ₹62,870 per year or ₹30 per hour, but some professionals have reported earning up to roughly ₹103,169 per year (90th percentile). The typical pay range is between ₹48,865 (25th percentile) and ₹81,951 (75th percentile) annually. This is based on 60 salaries submitted by Firstsource Solutions Senior Customer Service Associate professionals on Glassdoor, as of Jun 2026.