Plans for new schools, hospitals, roads and low-cost housing would be scuttled if the Opposition had its way, according to the Minister Assisting the Treasurer, Geoff Gallop.
Dr Gallop said Opposition claims about the State finances would have Western Australians denied essential community services.
"The Government's capital works program, like all other States, is partly funded through borrowings," Dr Gallop said.
"This year the Government's program has also helped stimulate the building and construction industry and provide jobs.
"I would be happy to arrange a briefing for the Opposition spokesperson for resources to enable him to at least understand the latest Treasury figures."
Mr Gallop said WA's tax-supported debt was the second lowest of any State in Australia.
The ratings agency, Standard and Poor's, also recently commented that its ratings for WA reflected `the Government's relatively cautious management of its budget and moderate debt burden'.
"I would suggest the agency's independence and knowledge put it in a much better position to pass judgement on the State's finances."