I'm relatively confident in the robustness of the revenue numbers because the tax base of the government tends to be fairly reliable. It's mostly personal and corporate income taxes, as well as the GST, and these are usually well-established tax bases in Canada. I don't have any major concerns with respect to the revenue projections. They are very closely tied to GDP, so it's not an area of concern that revenues could dip.
On April 27th, 2021. See this statement in context.