The Reserve Bank has held the Official Cash Rate at 2.5%.
Governor Allan Bollard said on Thursday he expected it to remain at 2.5% until around the middle of 2010.
The rate was set at this level on 11 June.
Dr Bollard said the New Zealand and global economies are continuing to recover, but considerable uncertainty about the durability of this remains.
He said sustained growth is not assured, financial sectors are still impaired in a number of economies and economic activity is still heavily dependent on government support.
Dr Bollard said business confidence has improved but actual business spending is weak and credit growth remains subdued, suggesting households are being relatively cautious.
The OCR has been lowered from 8.25% since July last year.
Radio New Zealand's economics correspondent says the Reserve Bank's job is to keep annual inflation - or the rate of price increases - at between 1% - 3%. It is well within this band at 1.7%.
Reserve Bank statement
In a statement, Dr Bollard said:
"The New Zealand economy continues to recover but there remains considerable uncertainty about the durability of the expansion.
"Global activity has continued to rebound. Most obviously, activity in Australia, China and emerging Asia continues to increase and solid growth is expected over the next few years.
"The picture is more mixed in the major developed economies. While activity is expanding, sustained growth is not assured.
"Financial sectors are still impaired in a number of economies and economic activity is still heavily dependent on policy support.
"In New Zealand, the economy continues to recover, reflecting improved world growth, higher export commodity prices, increased government spending and housing strength.
"A key uncertainty is the extent to which higher house prices are eventually reflected in increased consumer spending. At this point credit growth remains subdued suggesting households are being relatively cautious.
"While business confidence has improved, actual business spending remains weak.
"In addition, the high level of the New Zealand dollar has limited the scope for exports to contribute to the recovery. After some short-term correction the current account deficit is expected to widen in the future.
"Annual CPI inflation is expected to remain below 2 percent until early 2011 and track within the target range over the medium term.
"The economy is being assisted by both monetary and fiscal policy support. As growth becomes self sustaining, fiscal consolidation would help reduce the work that monetary policy might otherwise need to do.
"If the economy continues to recover, conditions may support beginning to remove monetary stimulus around the middle of 2010.
"Recent tightening in financial conditions, driven by a higher exchange rate, increased long-term interest rates and a wider gap between the OCR and bank funding costs, reduces the need for more immediate action."