The estimated average salary for a CSA - Customer Service Associate at Firstsource Solutions is A$51,937 per year or A$25 per hour, but some professionals have reported earning up to roughly A$75,240 per year (90th percentile). The typical pay range is between A$43,473 (25th percentile) and A$63,300 (75th percentile) annually. This is based on 1 salaries submitted by Firstsource Solutions CSA - Customer Service Associate professionals on Glassdoor, as of Jun 2026.