NAB has said it will continue to drive volumes through third party brokers as it grows above system levels and seeks a greater share of the mortgage market.
"NAB is not slowing mortgage lending," he said.
"Through our third party channels, NAB continues to experience record volumes, growing by more than three times the industry average."
"We remain well positioned to continue to grow above system and increase our market share. We will continue to work hard to grow volumes further," he said.
Cahill said the bank remained committed to providing the market with the lowest SVR of the major banks throughout 2012, and that it's commitment to brokers remains 'stronger than ever'.
"Focussing on the broker segment remains a key priority for NAB, and we'll continue to invest in every aspect of the broker business including service, products and support to ensure our broker partners can provide the best service to our customers," he said.