Net income rose to 23.7bn rupees ($457m; £298m) in the three months to the end of December, up from 17.8bn in the same period a year earlier.
Infosys got a boost when it exchanged foreign earnings into Indian rupees.
The rupee was the worst-performing Asian currency in 2011.
More than half of Infosys’ revenue is generated in foreign currencies in the US and Europe.
However, Infosys was pessimistic about the coming year.
“The global economy, driven by slower growth in developed markets coupled with the European crisis, could impact the growth of the IT industry,” said Infosys Chief Executive S D Shibulal in a statement.
As a result, the company downgraded its growth forecast for the financial year ending 31 March 2012
It now predicts an increase of 16.4% in dollar revenues, down from its previous growth estimate of between 17.1% and 19.1%.