The NYSE-listed firm had posted a net profit of USD 12.1 million in the year-ago period, it said in a statement.
Consolidated revenue rose 2.4 per cent to USD 134.1 million in the April-June period of the current fiscal from USD 131 million in the same quarter of 2014-15. The figures are on GAAP basis.
"We are pleased with our first quarter (Q1) results, the company's current business momentum, and the overall demand environment for BPM services," WNS Chief Executive Officer Keshav Murugesh said.
Its revenue (less repair payments) stood at USD 126.5 million in the said quarter, up 3.6 per cent from USD 122.1 million in Q1 2014-15.
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In 2011-12, WNS re-negotiated contracts with certain clients and repair centres in the auto claims business, whereby the primary responsibility for providing the services is borne by the repair centres instead of WNS.
The firm expects its revenue (less repair payments) to be between USD 523 million and USD 549 million in 2015-16, up from USD 503 million last fiscal.
WNS ended the first quarter with USD 135.2 million in cash and investments and USD 8.2 million of gross debt.
"Our revised guidance for the year reflects top line growth of 4 per cent to 9 per cent. The increase in our guidance for adjusted net income is the result of favourable currency movements and improved operational efficiency," WNS CFO Sanjay Puria said.
WNS added six new clients. Its global headcount stood at 29,672 as of June 30.