National Irish Bank (NIB) reported a 33 per cent rise in income to €92.5 million in the first six months of 2007.
Profit before tax also saw a significant boost, rising to €12.8 million compared to a €17.2 million loss for the same period in 2006.
Underlying profit rose 181 per cent to €34 million before goodwill and integration costs.
The strong performance was fuelled by an increase in lending to €8.5 billion, a 51 per cent increase year on year.
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Mortgage lending rose 52 per cent, and the bank's customer deposits grew 32 per cent to €3 billion.