The estimated average salary for a Senior Customer Service Associate at Firstsource Solutions is ₹62,877 per year or ₹30 per hour, but some professionals have reported earning up to roughly ₹103,184 per year (90th percentile). The typical pay range is between ₹48,870 (25th percentile) and ₹81,963 (75th percentile) annually. This is based on 60 salaries submitted by Firstsource Solutions Senior Customer Service Associate professionals on Glassdoor, as of Jun 2026.