Vic Treasury should cost policies: Libs

Treasury will scrutinise the election promises of every political party if the coalition is re-elected in Victoria.

Labor has yet to release its Victorian election policy costings, despite the coalition and the Greens handing theirs to Treasury.

To end the stand-off in future, the coalition promises to force parties to submit election policies to Treasury progressively before polling day.

Treasurer Michael O'Brien said a re-elected coalition government would again try to create the Parliamentary Budget Office, after a bid to introduce the office was voted down by Labor.

Opposition Leader Daniel Andrews would not be drawn on whether Labor would introduce its own version of the budget office if elected.

"We'll have more to say about these matters," Mr Andrews told reporters on Tuesday.

Mr O'Brien said political parties already had direct access to Treasury to allow independent scrutiny of their policies.

He said the coalition had submitted 56 policies and the Greens three.

"Daniel Andrews and Labor have no excuse for not using Treasury to test their costings," Mr O'Brien told reporters.

Oppositions traditionally release their election policy costings just 48 hours before polling booths close, giving voters the least possible amount of time to assess them.

"Our costings will be released from (accounting firm) Moore Stephens, with a sign off, in the usual way," Mr Andrews said.

Victorians started early voting on Monday, and Mr O'Brien said hundreds of thousands of votes were expected to be cast before Labor's policy costings were released.

Polls will close at 6pm on November 29.