Premier Carmen Lawrence will write to all Members of State Parliament to tell them to be prepared to disclose for public scrutiny details of their financial interests.
Her move comes after the passage through the Legislative Council last week of legislation that requires all Members of Parliament to make public their financial interests.
Dr Lawrence said it was now almost certain that the Government would achieve its aim of allowing public scrutiny of Members of Parliament financial interests before the next election.
The time allowed for Members of Parliament to lodge details of their financial interests had been reduced from 90 to 30 days.
The legislation still had to go back to the Legislative Assembly.
The original Bill had been passed by the Assembly as a result of support by the Government and the Independents, and no further delay was expected in the Assembly.
"The legislation could be in effect in the next week or two and a register of Members of Parliament pecuniary interests would then be available by the end of next month," Dr Lawrence said.
"This is a significant reform which will enable electors to be informed about the financial interests of Members of Parliament in arriving at judgements on how to vote.
"It has been a long time coming. Attempts in previous years to pass similar legislation were blocked by the conservative-dominated council.
"Even this time the Opposition has continued to try to obstruct the public disclosure provisions of the legislation.
"We have had to accept watered-down legislation to secure its passage against the Opposition resistance, which has blunted all our attempts at accountability legislation over the years.
"I hope the second report of the Royal Commission will help to put some resolve into the Opposition to support accountability legislation.
"I acknowledge the critical contribution of Independent MLC Reg Davies in standing firm against Opposition moves for the register of Members of Parliament interests to be kept secret.
"He has helped to restore public confidence in the Parliament's capacity to carry out reforms in line with community demands."