My response was that for every budget, every time there are measures that will affect the cost to the agency, following the announcement we work within our own agency to determine what we believe the incremental costs of the measure would be. Not all measures will involve costs. Some do; some don't.
In my branch, the finance branch, we work with my operational colleagues to make estimates of those costs. Then we ultimately present them to the Treasury Board for consideration. Ultimately, after all the due diligence is done, they will appear in estimates. They will most likely appear initially in supplementary estimates, and then ultimately in main estimates.