The lender also said it had reduced defaulted loans by €1bn in H1 2015 down more than 25% from their peak level.
Underlying profits rose to €743m more than double the profit it posted in H1 2014.
Richie Boucher, Bank of Ireland group chief executive, said: “We have made further good progress against our strategic priorities during the first half of 2015, building on the momentum we have established in recent years.
“We have grown our new lending by 50% and we continue to be the largest lender to the Irish economy. We also generated capital at a significant pace and further improved our asset quality.”
