Groupon has reported a loss of $54.9m (£41.5m) for the second quarter, a year after notching a profit of $110m.
However, the discounts firm said that adjusted for charges and other items, it would have meant a loss of just $0.01 per share.
This put the firm ahead of average analyst forecasts of a loss of $0.02 per share.
In addition, second quarter revenues climbed from $738.4m to $756m.
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As a result, Groupon hiked its revenue outlook for 2016 to $3.1-$3bn, up from $2.75bn-$3.05bn.
Groupon chief executive Rich William said: "We continued to see strong traction in customer acquisition as we added more than 1 million new customers -- the most in more than two years.
"We're excited with the progress of our marketing programs to date and their effectiveness in introducing millions more people to our marketplace."