Some economists questioned his decision to hike last year, saying it was premature, especially given the near-double-dip recession through the middle of last year when economic growth stalled in the June quarter and contracted in September period.
Bollard also justified this year's 50 basis point cut in March, saying it was "aimed at helping offset the economic impacts of the Christchurch earthquake and to guard against the risk of the economy slowing sharply."
"Since then, economic activity has continued to expand, suggesting that the nationwide effects of the earthquake have been contained," he said.
In the July OCR review, Bollard indicated he saw "little need" to keep the extra stimulus from the March cut, though that was dependent on global markets settling down.
Because Europe's sovereign debt crisis and the faltering US economy have continued to stoke investor fears, he kept rates on hold at 2.5 per cent, and said he won't hike unless the global turmoil has a "mild impact" on the local economy.
The Reserve Bank today lifted its forecast cost of the Canterbury quakes to $20 billion, and said the total bill is still uncertain.
Last month, Finance Minister Bill English said the government faces a bill of some $7.1 billion from the quake, which will push this year's budget deficit out to $18 billion and wipe out the $6 billion National Disaster Fund.