"The thing I regret most is the impact that any interest rate rise will have on working families," he said.
But when the rise is passed through to mortgages, Mr Howard said, "the average housing loan in Australia at 8.3 per cent will still be lower than it was at any time under the Hawke and Keating governments".
The Prime Minister sought to turn the attack onto Labor's plans to dismantle the Government's WorkChoices industrial relations changes.
This, he said, would "lead to a wages break-out in areas of the economy that can't afford wage increases, with negative consequences for higher inflation and higher interest rates".
Shadow treasurer Wayne Swan blamed the Government for failing to head off rising inflationary pressures caused by skills shortages and infrastructure bottlenecks.
"Australian families are now paying the price for Mr Howard's neglect," he said.
"Today's ninth straight rate rise (since 2002) has seriously damaged Mr Howard's economic credentials and will make it very difficult for Australian families to believe anything Mr Howard says in the upcoming election."
In explaining the Reserve's decision, Mr Stevens ignored politically contentious topics, instead pointing to evidence of "a pick-up in the pace of growth in demand and activity" and in underlying inflation.
"Capacity utilisation is high after a lengthy period of expansion, and unemployment has continued to decline," he said.
"Business and household confidence are strong. The demand for finance has strengthened, particularly in the business sector."
The Age, Tim Colebatch, Nassim Khadem and Marc Moncrief, August 9th 2007