From the BNZ Economy Watch.
In the Post-GFC environment, heightened bank funding costs have driven a wedge between the OCR and borrowing costs. The key contributor has been RBNZ regulation requiring banks to source more secure forms of funding. Some relief in costs was experienced last year as some expensive funding from the GFC rolled off, and some reduced competition in the domestic deposit market was experienced. At the margin there is potential for a little further decline in funding costs. However, greater stability is now expected. Therefore more of the rise the underlying OCR will ultimately be felt by borrowers.