John Kensington, KPMG's head of financial services, said the profit reduction was because of income from interest-bearing assets, impairment charges and a reduction in non-interest income.
Net interest income across the sector grew $70.29 million but non-interest income fell by $81.66 million and impaired asset expenses were up $31.4 million.
Lending growth outpaced funding growth with gross loans growing at a five year high of 2.22 per cent or $8.08 billion for the quarter.
Amongst the major banks lending grew by 2.18 per cent or $7.69 billion but funding only rose by 2.08 per cent or $7.43 billion.
"The strong economy and improved business confidence has seen New Zealanders continue to invest in property, rather than putting money on deposit.
"New Zealanders appetite for borrowing is exceeding their appetite for depositing in the June quarter, in turn, putting pressure on banks funding requirements," Kensington said.