The salary trajectory of a Customer Support Advisor ranges between locations and employers. The salary starts at £0 per year (estimate) and goes up to £0 per year (estimate) for the highest level of seniority.
The estimated average salary for a Customer Support Advisor at Firstsource Solutions is £61,525 per year or £30 per hour, but some professionals have reported earning up to roughly £105,329 per year (90th percentile). The typical pay range is between £46,708 (25th percentile) and £82,009 (75th percentile) annually. This is based on 302 salaries submitted by Firstsource Solutions Customer Support Advisor professionals on Glassdoor, as of Jun 2026.