John Stapleton has written a paper about this. It's on the Open Policy Ontario website. He has a checklist of all the questions that need to be filled in for income tax, and the government actually has the information for almost every single item there already. That's usually through the submission of T4s, T4As or, for seniors, from ESDC, GIS and old age security.
If we could overcome the privacy rules on this, which are, frankly, a little bit silly, there could be a flow of data to fill those income tax forms and get those benefits out. That's it in a nutshell.