Thank you very much for the question.
In calculating social benefits, the way the system generally works is that you're looking at an individual's income for the prior year. Individuals submit their tax return; their income is calculated, and that income is used by both the CRA and other departments, as well as provinces and territories, in terms of some of the benefits they might pay. We generally use net income.
The departments, in this case ESDC, would then use the information feed that we provide to calculate the GIS, etc. They're the department responsible for that, based on the income that we provide, which is always going to be the same.