The city-based bank's profit after tax stood at Rs 1,048 crore in the same period last year.
"The decline in net profit was mainly contributed by increased provisions for NPAs at Rs 331 crore and higher tax provision of Rs 375 crore during the quarter," bank executive director, Ranjan Dhawan, told reporters here today.
The bank had to make higher provisioning on taxes as the Dubai government levied retrospective tax on its UAE branch, he added.
Net interest margin fell to 2.92 per cent from 2.95 per cent.
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Reacting to the poor set of numbers, shares of BoB tanked over 11 per cent to Rs 193.35 on the BSE whose main gauge Sensex shed 499 points on profit booking and negative global cues.
The bank also saw its asset quality worsening in the period due to the stresses in the economic environment and the ongoing structural issues.