The Budget creates three new government quangos to run the rule over political parties' spending promises, keep tabs on local governments' administration of the Resource Management Act, and a special tribunal to sort out Canterbury earthquake insurance disputes.
Dubbed the "independent fiscal institution", the new body to provide all political parties with non-partisan advice on costing their policies is a Green Party policy that was included as part of its confidence and supply agreement, allowing the Labour Party to form a government last October.
The IFI would provide the public with an assessment of government forecasts and cost political parties' policies, said Finance Minister Grant Robertson.
Greens co-leader James Shaw said that 25 of the 36 member countries of OECD have such bodies and that they can "crunch political parties' election promises in a credible way".