WA govt to release costings on Wednesday

The West Australian government will release its full election costings on Wednesday, while taking a swipe at Labor for not following suit.

"Labor has refused to submit its costings to Treasury, indeed, it has attacked Treasury as politically biased," Treasurer Mike Nahan told reporters on Tuesday.

He said the state Liberal National government costings, submitted to Treasury last week, will show the government is has "a credible pathway to surplus".