Governments release policy information through a variety of publications including the Speech from the Throne, Budget, Press Releases, and departmental publications like annual reports and news releases. Often, legislation is created to enact a government's policies. Thus, the publications of parliament are a rich source for policy information.
The Budget is a blueprint for how the Government wants to set the annual economic agenda for Canada. And it's the job of the Department of Finance to prepare it. The budget, usually tabled early in the year, is generally preceded in the fall by another major statement, the Economic and Fiscal Update.